Hep B Blog

Category Archives: Research

HDV, Hepatitis B Awareness, Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Hepatitis B Research, Hepatitis Delta (HDV), Research

Breaking barriers and improving outcomes: Overcoming challenges in hepatitis B and delta screening, prevention and linkage to care among people who use drugs in Philadelphia

Little is known about the prevalence of hepatitis B and delta viruses (HBV/HDV) among people who use drugs (PWUD). Despite being a high-risk population, awareness of these viruses is still low among both community members and healthcare providers. Two recent studies conducted in Philadelphia, which were led by the Hepatitis B Foundation in partnership with Prevention Point Philadelphia, highlight different aspects of this ongoing public health concern. The first identified barriers to screening, prevention and linkage to care, while the other aimed to dismantle those barriers.

The first study explored the obstacles to HBV and HDV prevention, diagnosis and follow-up care. The study evaluated current knowledge levels and identified the needs and preferences of both people who use drugs and providers that serve them. Data was collected through an anonymous online provider-focused survey, and interviews were conducted with community members, and both medical and non-medical staff from different harm reduction settings in Philadelphia, Pennsylvania.

Interviews with key informants revealed that:

  • 48% of interviewed providers reported confusion about insurance coverage as a barrier to HBV screening.
  • 45% of providers mentioned the need to address and prioritize other pressing health needs, as a challenge to conducting HBV screening.
  • 52% of providers noted patient hesitancy as a barrier to HBV vaccination.
  • 39% of providers identified the need to administer multiple doses as a challenge for completing the HBV vaccination series.
  • 62% of providers reported low knowledge of HDV tests as a barrier to HDV testing.
  • 31% of providers indicated complexity of guidelines as a challenge in HDV testing.

Overall, awareness of HBV and HDV in the community, and among staff and health care workers was low, and stigma related to drug use and harm reduction was a significant barrier to care. There is an urgent need to address this issue in a non-judgemental and non-stigmatizing way that is clear, factual and empowering. Continued financial and political support for harm reduction organizations is essential for improving health care access for people who use drugs. More efforts are needed to overcome barriers to vaccination, testing and linkage to care to create better health outcomes and ultimately increase the quality of life of people who use drugs. 

The second study aimed to assess the prevalence of HBV and HDV and enhance access to care among people who use drugs, through a harm reduction organization (HRO) in Philadelphia. Participants first completed a demographic survey to help researchers gather information about their backgrounds and lifestyles, and to improve understanding of HBV and HDV risk factors within the community. Participants were then screened for HBV, and if they tested positive for certain HBV markers, they were automatically tested for hepatitis delta. 

Of the 498 participants:

  • 25.3% did not have hepatitis B immunity.
  • 52.6% had been vaccinated against HBV.
  • 17.9% had recovered from a past HBV infection.
  • 2.2% tested positive for isolated HBV core antibody.
  • 2.0% tested positive for HBV surface antigen.
  • 0.2% tested positive for HDV antibody.
  • 10% of those who were living with an active HBV infection had an HBV/HDV coinfection.

This study found that rates of current HBV infection in this community were nearly three times greater than in the general U.S. population, and the 10% coinfection rate of HDV is also significantly higher. Risk factors associated with a positive HBV status included a history of incarceration, experiences with homelessness and transactional sexual encounters. These findings highlight the prevalence of hepatitis B and D in this population. These viruses pose serious and critical public health concerns and remain under-prioritized among people who use drugs. Consistent and robust screening, vaccination, and linkage to care efforts can positively impact health outcomes for this community. Approving a hepatitis B point-of-care test (so that people who get tested can get results almost immediately), support in the form of funding and policy to allow HROs to provide full healthcare services, and adequate insurance coverage for vaccines can contribute to positive outcomes for hepatitis B and D diagnosis, prevention and treatment. These recommendations can advance elimination efforts, lower mortality, increase quality of life and center the health and needs of people who use drugs. 

References

  1. Zovich, B., Freeland, C., Moore, H. et al. Identifying barriers to hepatitis B and delta screening, prevention, and linkage to care among people who use drugs in Philadelphia, Pennsylvania, USA. Harm Reduct J 21, 199 (2024). https://doi.org/10.1186/s12954-024-01117-4
  2. Zovich, B., Freeland, C., Moore, H., Sapp, K., Qureshi, A., Holbert, R., Zambrano, J., Bhangoo, D., Cohen, C., Hass, R. W., & Jessop, A. (2024). Dismantling Barriers to Hepatitis B and Delta Screening, Prevention, and Linkage to Care among the PWUD Community in Philadelphia. Viruses, 16(4), 628. https://doi.org/10.3390/v16040628

300 Million Reasons, About Hepatitis B, Hepatitis B Awareness, Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Research

AGA Publishes New Guidelines on Hepatitis B Reactivation!

 

 

 

 

 

 

 

 

 

The American Gastroenterological Association (AGA) has released updated guidelines to prevent and treat hepatitis B reactivation (HBVr) among at risk populations. Hepatitis B Reactivation is a serious health issue for many people undergoing treatment for cancer or people on other medications. Learn more about HBVr here. 

Immunosuppressive medications are used to treat many different health conditions and most types of cancers. Sometimes, these medications can cause sudden increases in HBV DNA levels and cause reactivation. This can lead to liver failure, severe liver damage and death. Because reactivation can happen to anyone, it is important to test for hepatitis B before starting any kind of immunosuppressive treatment as this can help doctors understand the patient’s previous or current exposure to hepatitis B and prevent reactivation altogether (Ali et al., 2025). If someone is at risk for reactivation, it can be prevented, and this testing helps to ensure that.  

The new guidelines have identified individuals that are most at risk of HBVr according to their hepatitis B status and the immunosuppressive medications they are receiving. 

People who are positive for chronic hepatitis B are at the highest risk if they take the following medications  

  • Anthracycline derivatives, anti-tumor necrosis factor (TNF) agents, or anti-interleukin-6 (IL-6) therapies. 
  • B cell-depleting agents (E.g., rituximab), chimeric antigen receptor (CAR)-T cell therapies, or cytokine/integrin inhibitors. 
  • Tyrosine kinase inhibitor (TKI) therapies or Janus kinase (JAK) inhibitors. 
  • Liver cancer treatment -transarterial chemoembolization (TACE)) 
  • Co-infected with hepatitis C and on direct-acting antiviral (DAA) therapy. 
  • High doses of corticosteroids for longer than a month 

People who were previously exposed to hepatitis B (through a positive anti-HBc) or if they tested negative for surface antigen are at the highest risk if they take rituximab (a cancer treatment drug) but are at a moderate risk if they take any of the above-mentioned medications or treatments (Ali et al., 2025). 

HBVr can progress rapidly, which is why screening for hepatitis B, prior to beginning treatment for cancers is important. If you take any of the mentioned medications, it is best to discuss with your doctor about your risk of reactivation. If you know about your hepatitis B status, you should disclose it to your provider or ask to get tested for hepatitis B to learn about your risk of reactivation. In the United States, all adults over 18 years of age are recommended to get tested for hepatitis B at least once in their lifetime. 

  • Learn more about the updated guidelines here. 
  • Learn more about hepatitis B Reactivation on our B Heppy Podcast here.  

 

References 

Ali, F. S., Nguyen, M. H., Hernaez, R., Huang, D. Q., Wilder, J., Piscoya, A., Simon, T. G., & Falck-Ytter, Y. (2025). AGA Clinical Practice Guideline on the Prevention and Treatment of Hepatitis B Virus Reactivation in At-Risk Individuals. Gastroenterology, 168(2), 267–284. https://doi.org/10.1053/j.gastro.2024.11.008  

HBV, Hepatitis B Awareness, Hepatitis B Prevention, Hepatitis B Research, Hepatocellular Carcinoma, Liver, Liver Cancer, Liver Cancer Awareness Month, Liver Health, Research

Highlighting the Relationship between Hepatitis B and Liver Cancer

Highlighting the Relationship between hepatitis B and Liver Cancer

October marks Liver Cancer Awareness Month, an initiative highlighting this significant, but under-prioritized public health concern. Unfortunately, people living with hepatitis B have greater risk of developing liver cancer, and this risk is even higher for people born in countries where hepatitis B is more prevalent (Department of Health and Human Services [HHS], 2014; Chayanupatkul et al., 2017). Because of this, the Hepatitis B Foundation (HBF) conducted a study among foreign-born communities in the U.S. who are heavily impacted by the hepatitis B virus (HBV) to assess awareness levels about the connection between HBV and liver cancer. HBF used the perspectives and ideas expressed during these focus groups to create culturally and linguistically tailored, community-focused awareness and educational materials, so that everyone has continuous access to user-friendly HBV and liver cancer information.

From April to September 2021, the HBF conducted focus groups with people from the Micronesian, Chinese, Hmong, Nigerian, Ghanaian, Vietnamese, Korean, Somali, Ethiopian, Filipino, Haitian, and Francophone West African communities. A total of 15 virtual focus groups took place, with 101 individuals providing their thoughts about what hepatitis B and liver cancer are, and insights into appropriate strategies to educate their greater communities on the connection between these two conditions. The resulting communications campaign aims to improve the public’s knowledge about the link between HBV and liver cancer, reduce hepatitis B- and liver cancer-related myths and misconceptions, and promote hepatitis B and liver cancer screening and early detection among Asian and Pacific Islander (API) and African and Caribbean immigrant communities. The ideas and experiences voiced by focus group participants also contributed to the development of informational liver cancer materials for community health educators to integrate into existing education programs for immigrant communities.

Summary of focus group findings:

All focus groups emphasized the need for educational materials to highlight the relationship between hepatitis B and liver cancer. Interestingly, people were more aware of liver cancer and its serious health consequences than they were of hepatitis B and how it is a leading cause of liver cancer. Many people had personal experience with liver cancer, having known family members, friends or other community members who have died from the disease. With this, participants believed that people will be more likely to practice healthy behaviors, like vaccination and routine screening, when they know that HBV can lead to liver cancer and know what behaviors can reduce their risk of liver cancer and death. When people learn about the benefits of vaccination (like full protection against HBV and reducing the risk of transmitting the virus to loved ones), and screening (keeping your liver healthy), and are provided with resources and tools to manage their health, they are empowered and are more likely to make healthy choices to reduce their risk of severe health outcomes.

When educating people about the connection between the two diseases, it is also important to address the widespread misconceptions about both hepatitis B and liver cancer, which contribute to shame and stigma surrounding each condition. Many focus group participants revealed that their communities believe that HBV is related exclusively to sexual promiscuity, injection drug use and poor hygiene, all of which lead to stigma against people living with hepatitis B (PLHB), who are believed to be “immoral” or “dirty.” These stigmatizing beliefs cause PLHB to become reluctant to seek care and treatment for the virus, and can discourage screening in the greater community because people do not want to be shamed by or isolated from their social circles. Additionally, participants discussed how their communities believe that liver cancer is only associated with alcohol and are unaware of the causal relationship between HBV and liver cancer. According to focus group participants, educational materials should include some information about how hepatitis B is transmitted and how it can lead to liver cancer if left untreated and unmanaged. One way to do this is by including the personal testimonials of PLHB and liver cancer in educational materials, who show the audience how they stay healthy and maintain a good quality of life while living with these diseases. As people see how one’s quality of life does not diminish, and learn from the stories of people living with hepatitis B or liver cancer, they may become more understanding of the diseases and supportive of their own community members who are living with them.

Focus group participants were also asked to identify communication strategies that would be acceptable for their community groups. As for in-person communication, educational sessions should take place in settings where people feel safe, including community-based organizations, religious spaces, and healthcare offices. These sessions, as emphasized by participants, should be facilitated by trusted messengers, like patient navigators, doctors, and faith leaders, or other people who have a shared culture with the audience. Demonstrating cultural respect during face-to-face communication is also of utmost importance. Certain communities emphasized that it is especially important to have gender-specific messengers when discussing topics like sexual transmission of hepatitis B (Taylor et al., 2013; Cudjoe et al., 2021). 

Educational campaigns should also be strategic when discussing community-specific risk, as it is important to discuss each community’s risk without placing blame on a specific group. Despite the fact that countries in the Asian-Pacific and sub-Saharan African regions have endemic levels of HBV and the highest global incidence rates of liver cancer (Zamor et al., 2017), many focus groups explained that their communities consider HBV and liver cancer to be Western diseases, since the conditions are often not discussed in home countries, and are therefore unaware of both the severity of the diseases and their personal risk. Focus group participants agreed that informational material can group highly impacted communities together when presenting prevalence rates and risk factors, so as to reduce shame associated with HBV and liver cancer of one group while increasing audience awareness of their risk (Parvanta & Bass, 2018). 

Experiences of Community Focus Group Facilitators

Community participation and leadership was of utmost importance in this project. Two focus group facilitators recounted their experiences of recruiting and conducting focus groups with their communities. The first was the leader of the Cantonese focus group.

Despite being nervous about how it would turn out, one facilitator spent time thinking about the project. They chose to conduct the focus group in Chinese (Cantonese), the “native language of the participants,” and hoped that communicating in Cantonese would increase participant engagement, especially when discussing their “lived experience of the disease.” 

“Prior to convening the Zoom meeting, I had provided a one-on-one orientation to each participant about the theme of the focus group and expectations. As a result, everyone was ready and able to fully participate, and speak openly at the meeting. It was a fruitful discussion among the five participants. Everyone brought up their perspectives and insights about stigma and health education strategies to the community. They had expressed a sense of fear and emotional distress when they were made aware of the relationship between hepatitis B and liver cancer. They raised lots of questions on hepatitis B transmission, testing and vaccination, and liver cancer and treatment, and were very interested to learn more about necessary lifestyle changes if they contracted chronic hepatitis B. 

At the end participants had requested a follow-up session to learn more about HBV and liver cancer.  They will be excited to know about the release of the newly developed Chinese-language educational materials on both diseases, which came together because of their contributions. I would suggest Hepatitis B Foundation and UC Davis to host an in-person workshop to present  the new education materials.  That would be a meaningful outreach and education to the local Chinese and Asian communities.”

Another facilitator shared their thoughts and insights regarding the focus group they conducted with their African immigrant community. They felt that being a facilitator for this study was an “enlightening experience,” especially as they uncovered their community’s healthcare awareness as it relates to hepatitis B and liver cancer. They continued to share:

“Running the focus group gave me valuable insights into the knowledge gaps and misconceptions surrounding HBV within the African immigrant population. Through open and honest discussions, we uncovered specific areas where education and awareness initiatives can have a significant impact. Many participants needed to understand the transmission, prevention, and available resources related to these diseases. Understanding these nuances is crucial in tailoring our educational materials effectively.

Regarding the study findings, it was evident that there is a pressing need for culturally sensitive educational resources. The unique challenges African immigrants face, including language barriers and cultural differences, highlight the importance of creating materials that resonate with our community members. Moreover, the findings emphasized the urgency of dispelling myths and stigmas associated with HBV and fostering a supportive environment for affected individuals and their families.

As for the materials produced for the campaign, I am genuinely impressed with the effort and attention to detail put into their creation. The content is informative and culturally relevant, making it relatable to our community. Using images, culturally familiar scenarios, and visuals ensures that these materials will significantly raise awareness about HBV in my community.

When disseminated effectively, these materials will empower African immigrants with the knowledge they need to protect themselves and their loved ones. By addressing the specific concerns and questions raised during our focus group sessions, these resources have the potential to bridge the information gap and promote proactive healthcare practices within our community.”

Conclusion

The overall goals of these materials are to facilitate improved hepatitis B and liver cancer awareness, increase testing and prevention behaviors, and reduce misconceptions about the two diseases to ultimately reduce HBV- and liver cancer-related death. Thanks to the insights and recommendations from the focus group participants, educational hepatitis B and liver cancer materials were created in a culturally sensitive and linguistically appropriate manner for a number of communities in the U.S. who are greatly impacted by the two diseases. To reach a broad audience, the materials will be available on multiple communication platforms and in multiple languages. This first part of the community-informed educational campaign can be found on the HBF’s Liver Cancer Connect website now. All materials will be fully uploaded and available to the public for further community education starting in February of 2024. Translated materials and messages tailored for audio and video formats will also be uploaded on a rolling basis. 

References

Chayanupatkul, M., Omino, R., Mittal, S., Kramer, J. R., Richardson, P., Thrift, A. P., El-Serag, H. B., & Kanwal, F. (2017). Hepatocellular carcinoma in the absence of cirrhosis in patients with chronic hepatitis B virus infection. Journal of Hepatology, 66(2), 355-362. https://doi.org/10.1016/j.jhep.2016.09.013

Cudjoe, J., Gallo, J.J., Sharps, P., Budhathoki, C., Roter, D., & Han, H-R. (2021). The role of sources and types of health information in shaping health literacy in cervical cancer screening among African immigrant women: A mixed-methods study. Health Literacy Research and Practice, 5(2), e96-e108. doi: 10.3928/24748307-20210322-01

Department of Health and Human Services. (2014). Action plan for the prevention, care, & treatment of viral hepatitis. Department of Health and Human Services.

Hong, Y.A., Juon, H.S., & Chou, W.Y.S. (2021). Social media apps used by immigrants in the United States: Challenges and opportunities for public health research and practice. mHealth, 7, 52. doi: 10.21037/mhealth-20-133

Hong, Y.A., Yee, S., Bagchi, P., Juon, H.S., Kim, S.C., & Le, D. (2022). Social media-based intervention to promote HBV screening and liver cancer prevention among Korean Americans: Results of a pilot study. Digital Health, 8, 20552076221076257. https://doi.org/10.1177/20552076221076257 

Joo, J.Y. (2014). Effectiveness of culturally tailored diabetes interventions for Asian immigrants to the United States: A systematic review. The Diabetes Educator, 40(5), 605-615. DOI: 10.1177/0145721714534994

Parvanta, C., & Bass, S. (2018). Health communication: Strategies and skills for a new era: strategies and skills for a new era. Jones & Bartlett Learning, LLC.

Porteny, T., Alegria, M., del Cueto, P., Fuentes, L., Lapatin Markle, S., NeMoyer, A., & Perez, G.K. (2020). Barriers and strategies for implementing community-based interventions with minority elders: Positive minds-strong bodies. Implementation Science Communications, 1, 41. doi: 10.1186/s43058-020-00034-4

Taylor, V.M., Bastani, R., Burke, N., Talbot, J., Sos, C., Liu, Q., Jackson, J.C., & Yasui, Y. (2013). Evaluation of a hepatitis B lay health worker intervention for Cambodian Americans. Journal of Community Health, 38(3), 546-553. doi: 10.1007/s10900-012-9649-6

Zamor, P. J., deLemos, A. S., & Russo, M. W. (2017). Viral hepatitis and hepatocellular carcinoma: Etiology and management. Journal of Gastrointestinal Oncology, 8(2), 229–242. https://doi.org/10.21037/jgo.2017.03.14

Clinical Trials, HDV, Hepatitis D Drug Development, Hepatitis Delta (HDV), Liver, Liver Health, Research

Drug Profile: Three Hepatitis Delta Therapies That We Hope to See Widely Available Soon

 

 

 

 

The full extent of hepatitis delta’s (HDV) global disease burden is still unknown and treatment options for HDV have been limited. However, there are three promising up-and-coming drugs to treat HDV patients. This blog post details the drugs’ current phase of development and testing, how well they work for patients in the real world, and their current path toward regulation and market availability. 

Bulevirtide (Hepcludex) 

Gilead Sciences Inc. has been seeking approval from the U.S. Food and Drug Administration (FDA) for bulevirtide, or Hepcludex, since 2021. In 2020, Gilead acquired MYR, a German pharmaceutical company that had developed the hepatitis delta virus (HDV) drug. At the time that it was acquired, Hepcludex had already been conditionally authorized for use in Germany, France, and Austria (MYR Pharmaceuticals, 2020). Gilead, which is based in California, in the U.S., hoped to accelerate the global launch of Hepcludex. Since then, however, Hepcludex remains in regulatory limbo. In October 2022, the FDA announced the rejection of Hepcludex, citing concerns around the manufacturing and delivery of the drug. Gilead responded by stating that they plan to resubmit Hepcludex for approval as soon as possible (Dunleavy, 2022). Six months after the FDA rejection, the Committee for Medicinal Products for Human Use, which is the European Medicines Agency’s (EMA’s) committee responsible for conveying its opinions on medicinal products to the public, stated that it recommends Hepcludex for full marketing authorization in Europe. Since its conditional approval, a Phase 3 trial (which utilized data from patients in Germany, Italy, Russia, Sweden, and the U.S.) has shown it to be safe and effective for HDV patients. If the European Commission fully approves Hepcludex, it will be the only authorized HDV treatment available in Europe (Dunleavey, 2023).  

Lonafarnib 

At the end of 2022, Eiger Biopharmaceuticals announced that lonafarnib reached an important milestone in its phase 3 trial.  

The trial includes two regimens in patients with chronic HDV:  

  1. 1. Lonafarnib boosted with ritonavir, a protease inhibitor, which interferes with the ability of certain enzymes to break down proteins, often used in combination with other therapies for antiviral activity (this is an all-oral therapy), and
  2. 2. Lonafarnib in combination peginterferon alfa, an antiviral and immunosuppressive, which either completely or partially suppresses the immune system, often used to treat hepatitis B (HBV) and hepatitis C (HCV) patients (this is a combination therapy).

Both treatment arms showed statistical significance over the placebo arm of the trial. The placebo arm is used as a control in drug testing and has no therapeutic effect on patients. The results showed three noteworthy findings: 1. After 48 weeks (about 11 months) of treatment with the all-oral regimen, a small number of patients may achieve reduced viral load and improved liver function. 2. Combining lonafarnib and ritonavir with peginterferon alfa showed the potential to almost double the effectiveness of the drugs. 3. Combination treatment may lead to significant liver tissue improvement. Researchers found that most adverse symptoms related to treatment were either mild or moderate in severity, with gastrointestinal issues being the most frequent (Eiger Biopharmaceuticals, 2022). 

Peginterferon Lambda 

In June 2023, the results of a phase 2 trial looking at the safety and efficacy of peginterferon lambda (also an Eiger Biopharmaceuticals product) in HDV patients were published. Previously, peginterferon lambda showed a good tolerability profile (or the degree to which patients can tolerate negative treatment symptoms) in patients with HBV and HCV when compared to peginterferon alfa. In this trial, patients received 120-mcg or 180-mcg peginterferon lambda injections over 48 weeks, followed by 24 weeks of post-treatment follow-up. Researchers found that 180-mcg injections were more effective in HDV patients compared to the 120-mcg injections group. Results showed that with 48 weeks of 180 mcg treatment, patients showed a significant reduction in HDV RNA, the molecules responsible for perpetuating the virus in HDV patients. 36% of patients’ HDV RNA levels were undetectable. Some of the adverse symptoms patients experienced were flu-like symptoms and elevated transaminase levels, or enzymes that are related to a fatty liver. Most adverse symptoms were mild or moderate in nature and were resolved without additional treatment (Etzion et al, 2023). 

These three drug therapies show promise for HDV patients. Hepcludex is well on its way to becoming fully authorized in Europe after its three-year conditional approval and recent Phase 3 trial results. Lonafarnib’s phase 3 trial results are encouraging and Eiger, its manufacturer, plans to begin meeting with regulatory agencies, such as FDA and EMA, to discuss regulatory submissions (Eiger Biopharmaceuticals, 2022). Peginterferon lambda has shown a higher tolerability in patients with a lower adverse event rate than peginterferon alfa, which has been modestly used for the treatment of HDV over the past several decades (Etzion et al, 2023). Peginterferon lambda still has a ways to go before regulatory discussions, considering that results have just been published from its Phase 2 trial. Typically, in Phase 2 trials, researchers seek to learn whether the treatment they are studying is effective in fighting the disease. Phase 3 will test whether peginterferon lambda is more effective than already available, standard treatments. Hopefully, these three drugs continue to show positive results for HDV patients and will become widely available over the next few years. There are a number of other HDV drugs currently in development, but these are still in the early stages of clinical trial testing. You can stay up to date on the latest developments of these drugs by checking out the Hepatitis Delta Connect Drug Watch page. 

Dunleavy, K. (2022, October 28). Gilead hits surprise FDA rejection for hepatitis D drug already authorized in Europe for 2 Years. Fierce Pharma. https://www.fiercepharma.com/pharma/gilead-gets-fda-rejection-hepatitis-d-drug-already-authorized-europe-two-years 

Dunleavy, K. (2023, May 5). After FDA rejection, Gilead’s Hepcludex looks set for full EU NOD. Fierce Pharma. https://www.fiercepharma.com/pharma/gileads-hdv-drug-hepcludex-gets-thumbs-chmp 

Eiger announces both lonafarnib-based treatments in pivotal phase 3 D-LIVR trial in Hepatitis Delta virus (HDV) achieved statistical significance against Placebo in composite primary endpoint. Eiger BioPharmaceuticals. (n.d.). https://ir.eigerbio.com/news-releases/news-release-details/eiger-announces-both-lonafarnib-based-treatments-pivotal-phase-3 

Etzion, O., Hamid, S., Lurie, Y., Gane, E. J., Yardeni, D., Duehren, S., Bader, N., Nevo-Shor, A., Channa, S. M., Cotler, S. J., Mawani, M., Parkash, O., Dahari, H., Choong, I., & Glenn, J. S. (2023). Treatment of chronic hepatitis D with peginterferon lambda-the phase 2 LIMT-1 clinical trial. Hepatology (Baltimore, Md.), 77(6), 2093–2103. https://doi.org/10.1097/HEP.0000000000000309  

MYR Pharmaceuticals. (2020, September 17). Myr Pharmaceuticals launches HEPCLUDEX® in Germany, France and Austria. PR Newswire: press release distribution, targeting, monitoring and marketing. https://www.prnewswire.com/news-releases/myr-pharmaceuticals-launches-hepcludex-in-germany-france-and-austria-301133006.html 

HDV, Hepatitis D Advocacy, Hepatitis Delta (HDV), Research

Why Is Hepatitis Delta So Hard to Eliminate?

Forty-five years after Mario Rizzetto discovered the hepatitis D virus (also known as HDV or hepatitis delta), scientists and advocates met for the first ever Delta Cure Meeting to discuss new scientific trends and global advocacy efforts to eliminate this difficult-to-treat disease. This conference included topics ranging from HDV’s global prevalence to new diagnostic methods, and the need for specific and improved efforts to fight this virus.

During the Delta Cure Meeting, scientists called for new global strategies to find people living with HDV and have prompted the World Health Organization (WHO) to update their screening guidelines to include HDV tests for all people living with hepatitis B (people who are HBsAg-positive). 

Unfortunately, some barriers continue to stand in the way of making this call to action a reality. Dr. Meg Doherty, the Director of Global HIV, Hepatitis, and STI Programmes at the WHO, stated in a recent Healio article that the WHO does not have any prevention recommendations that are specific to HDV. However, the WHO is developing updated guidance for HDV testing, diagnosis, and treatment as a part of hepatitis B (HBV)-focused elimination efforts.

While some initial progress has been made, (such as the inclusion of HDV in the 2022-2030 Global Health Sector strategies, which aim to increase knowledge about infections like HIV and viral hepatitis to create effective responses to and advance elimination efforts for these diseases), there is a need to expand elimination strategies to include HDV more broadly. The lack of robust inclusion of HDV disregards people who are currently living with HBV and are at the highest risk of HDV exposure and acquisition. People who have been diagnosed with HDV are overlooked as linkage to appropriate care, diagnostics and treatments (which are important for people living with HDV to stay healthy) continues to be out of reach for many. One of the major challenges with HDV is also the lack of testing and surveillance to identify those individuals living with delta and to understand the true burden of the disease. 

The WHO affirms that HDV elimination efforts must start with raising awareness of the virus and increasing advocacy efforts. The scientists at the Delta Cure Meeting are doing just that. Here are some solutions that scientists and researchers have identified to address the challenges surrounding HDV elimination:

Barrier: Overly complicated screening guidelines present a major barrier to the elimination of HDV. It was only in March 2023 that the Centers for Disease Control and Prevention (CDC) introduced new guidelines recommending universal HBV screening for all adults in the United States. A recommendation for universal HDV reflex testing (automatic testing for HDV when one tests positive for HBV) for all individuals living with HBV has still not been implemented in the US. Additionally, the American Association for the Study of Liver Diseases (AASLD) has screening guidelines for HDV that are still risk-based, meaning that only people who have certain risk factors are recommended to be tested for HDV (high-risk groups include people who inject drugs and men who have sex with men, among others). Conversely, the European Association for the Study of the Liver (EASL) and the Asian-Pacific Association for the Study of the Liver (APASL) have moved away from risk-based screening. Both EASL and APASL recommend that providers perform the HDV antibody total (anti-HDV total) test in all HBsAg-positive patients to identify whether someone has recovered from or is currently infected with delta antibodies (Palom et al., 2022; Hepatitis B Foundation, 2023).

Risk-based screening burdens both providers and patients alike. As part of risk-based testing, providers must ask questions about risk factors that are not necessarily part of a regular health screening and must know which factors indicate a need for HDV testing. Providers are often hesitant to ask their patients these questions, as talking about risk factors can be uncomfortable and overwhelming. But if providers do not ask, then the patient must know their own risk factors and ask for the test themselves (which can be very uncomfortable). A guideline to test everyone who is positive for hepatitis B (HBsAg-positive) for HDV would eliminate this confusion and hesitation. In light of this barrier, and the fact that risk-based testing is not evidence-based, the Hepatitis B Foundation recommends that all people living with HBV ask their doctors about getting tested for hepatitis delta.

Call to Action: Introduce new screening guidelines, including screening all adults who are HBsAg-positive for HDV. As the US does not have universal HDV screening guidelines, people who test positive for the hepatitis B surface antigen (HBsAg) but do not fall into a “high risk” category are not recommended to be screened for HDV, so they may be living with hepatitis delta and unaware of their infection. This puts these individuals at a much higher risk of having unmanaged hepatitis delta and developing liver cirrhosis or other advanced liver diseases at a more rapid pace. HBV is also already significantly underdiagnosed in the US and, as Dr. Nancy Reau neatly summarized “If you aren’t thinking about B, you’re not thinking about D.” 

Barrier: HDV is not a nationally notifiable or reportable condition in the United States. This means that healthcare providers are not required to report cases of HDV to local and state health departments or to the CDC. Because of this, the actual number of people living with HDV in the US remains underestimated, and without accurate prevalence data, prioritization of this neglected disease is made all the more difficult. 

Call to Action: Make HDV a reportable and notifiable disease in the US and beyond. Dr. Doherty of the WHO agrees that efforts to identify the populations most at risk for HDV are needed in the fight for HDV elimination, and specifically mentions the need for epidemiological surveys (different study designs of various sizes to better understand the burden of disease). A new survey method was discussed at the 2022 Delta Cure Meeting by Dr. Saeed Hamid in his presentation, “Epidemiology of HDV: From Low to High Endemic Countries.” Dr. Hamid called for new national surveys to be distributed to people with advanced liver disease because this population is one in which HDV is most likely to be found. He believes this monitoring method can be used in any country to advance elimination efforts.

Barrier: There are currently no standard HDV diagnosis methods, which makes HDV elimination very difficult to achieve. Professor Maurizia Brunetto, who presented “Diagnosis of HDV: Clinical Virology and New HBV Biomarkers,” explained that there is likely an underestimation of HDV infection in general, due to misdiagnosis (when someone is incorrectly diagnosed) and challenges accessing the diagnostic testing for hepatitis delta. When Dr. Doherty of the WHO was asked about what needs to be done to improve HDV elimination efforts (specifically in the US), she mentioned improving diagnostic testing tools.

Call to Action: Simplify testing and introduce point-of-care testing to increase HDV detection and diagnosis. Prof. Brunetto explained that point-of-care testing (getting rapid results within 20 minutes of being tested rather than waiting for up to 48 hours for results of a traditional blood test) can improve overall HDV diagnostics around the world. She believes it is especially important to introduce point-of-care testing in countries with less developed medical infrastructure. Having this point-of-care testing method will be easier to maintain and can identify people living with HDV earlier and link them to treatment before their disease becomes more severe. Dr. Stephen Urban, who led the discovery and creation of the first ever drug for HDV (bulevirtide), has been developing a point-of-care test to find delta antibodies from one single drop of blood. While only in the experimental phase, Dr. Urban and colleagues have published two journal articles that provide evidence for the test’s potential effectiveness in identifying people living with HDV (Lempp et al., 2021). While still more than two years away from using this method at a larger scale, Dr. Urban believes that this method can lead to faster HDV diagnostics.

As new HBV screening guidelines are introduced and new diagnostic tools are being developed, we have to advocate for universal HDV screening in individuals with hepatitis B by raising public awareness of the importance of screening and raising the voices of people who are living with HDV around the world. 

References

American Association for the Study of Liver Diseases [AASLD]. (2021, November). Hepatitis d (delta) at AASLD 2021.  https://www.natap.org/2021/AASLD/AASLD_136.htm 

Centers for Disease Control and Prevention [CDC]. (n.d.). Interpretation of hepatitis B serologic test results [Fact Sheet]. U.S. Department of Health & Human Services. https://www.cdc.gov/hepatitis/hbv/pdfs/serologicchartv8.pdf 

CDC. (2022). Nationally notifiable diseases. U.S. Department of Health & Human Services. https://www.cdc.gov/healthywater/statistics/surveillance/notifiable.html 

CDC. (2023, March 10). Screening and testing for hepatitis B virus infection: CDC recommendations — United States, 2023. MMWR | Recommendations and Reports, 72(1);1–25. https://www.cdc.gov/mmwr/volumes/72/rr/rr7201a1.htm?s_cid=rr7201a1_w 

Delta Cure. (2022, October). Program. https://www.deltacure2022.com/pages/program/index.php 

Delta Cure. (2022, October). Poster Exhibition. https://www.deltacure2022.com/pages/posterExhibition/index.php 

European Association for the Study of the Liver. (2017, April 17). EASL 2017 clinical practice guidelines on the management of hepatitis B virus infection. Journal of Hepatology, Clinical Practice Guidelines, 67(2), P370-398. DOI: https://doi.org/10.1016/j.jhep.2017.03.021

Hepatitis B Foundation [HBF]. (2023). Testing and diagnosis. https://www.hepb.org/research-and-programs/hepdeltaconnect/testing-and-diagnosis/ 

HBF (2023). Treatment. https://www.hepb.org/research-and-programs/hepdeltaconnect/treatment/ 

Lempp, F. A., Roggenbach, I., Nkongolo, S., Sakin, V., Schlund, F., Schnitzler, P., Wedemeyer, H., Le Gal, F., Gordien, E., Yurdaydin, C., & Urban, S. (2021). A Rapid point-of-care test for the serodiagnosis of hepatitis delta virus infection. Viruses, 13(12), 2371. https://doi.org/10.3390/v13122371 

Michael, E. (2022, October 31). Q&A: Expert discusses current state of hepatitis D, challenges in elimination efforts. Healio. https://www.healio.com/news/hepatology/20221031/qa-expert-discusses-current-state-of-hepatitis-d-challenges-in-elimination-efforts 

Palom, A., Rando-Segura, A., Vico, J., Pacin, B., Vargas, E., Barreira-Diaz, A., Rodriguez-Frias, F., Riveiro-Barciela, M., & Esteban, R. (2022, October). Implementation of anti-HDV reflex testing among HBsAg-positive individuals increases testing for hepatitis D. Journal of Hepatology, 4(10), 100547. https://doi.org/10.1016/j.jhepr.2022.100547 

Sarin, S. K., Kumar, M., Lau, G. K., Abbas, Z., Chan, H. L., Chen, C. J., Chen, D. S., Chen, H. L., Chen, P. J., Chien, R. N., Dokmeci, A. K., Gane, E., Hou, J. L., Jafri, W., Jia, J., Kim, J. H., Lai, C. L., Lee, H. C., Lim, S. G., Liu, C. J., … Kao, J. H. (2016). Asian-Pacific clinical practice guidelines on the management of hepatitis B: A 2015 update. Hepatology International, 10(1), 1–98. https://doi.org/10.1007/s12072-015-9675-4

TheBMJ. (n.d.). Chapter 5. Planning and conducting a survey. https://www.bmj.com/about-bmj/resources-readers/publications/epidemiology-uninitiated/5-planning-and-conducting-survey

World Health Organization. (2022, July 18). Global health sector strategies on, respectively, HIV, viral hepatitis and sexually transmitted infections for the period 2022-2030. https://www.who.int/publications/i/item/9789240053779 

HDV, Hepatitis D Drug Development, Hepatitis Delta (HDV), Research

What You Need to Know About the 2022 Liver Meeting and How It Relates to Hepatitis Delta

 

 

 

 

This year, the annual Liver Meeting, hosted by the American Association for the Study of Liver Diseases (AASLD), was held in Washington, D.C. The featured presentations included new innovations in liver transplant surgery, disease modeling (which is a process that uses cells to show how a disease develops and to test possible treatment approaches), and drug development. While an effective, functional cure for hepatitis B virus (HBV) is still 5-10 years away, researchers, scientists, healthcare providers, and people with lived experience all came together and agreed that more needs to be done to reduce the burden of liver diseases and improve health outcomes now. One highlight of the meeting was Dr. Francis Collins, former director of the U.S. National Institutes of Health and special advisor to President Biden, hosting a special session to introduce a national hepatitis C elimination plan for the U.S. Unfortunately, this plan is focused on hepatitis C. As a response, the Hepatitis B Foundation will soon send an advocacy letter pushing for the inclusion of hepatitis B and hepatitis delta in this plan. Make sure you are signed up for our Action Center alerts to stay engaged with hepatitis B advocacy efforts.

Of particular note at this year’s meeting were the presence of many patient advocates and people with lived experience, and an increased focus on hepatitis delta. One important hepatitis delta poster presentation was delivered by Dr. Tatyana Kushner of Mount Sinai Hospital in New York City, entitled “HDV Patient Perspective: The Impact of Disease and Current Unmet Needs.” By including the perspectives of people living with hepatitis delta virus (HDV), this study aimed to empower the patient community. Dr. Kushner and her colleagues collected data on people’s quality of life to identify unmet needs, barriers and gaps in HDV care (including disease management and access-to-care inequities).

The researchers found that a person’s care is affected in two ways: In the care they receive for their clinical diagnosis and their emotional journey after diagnosis. The participants’ experience of care was often negatively impacted by having a delayed HDV diagnosis, and limited access to specialized care and tolerable treatment options. Findings describe that the lack of specific and acceptable treatment options for hepatitis delta left people with little hope, which put an emotional burden on their life post-diagnosis. Due to the gaps in providers’ knowledge of HDV, participants held little trust in their healthcare providers. The study participants also shared that they suffered emotionally due to the stigma attached to their diagnosis.

Dr. Kushner and her colleagues call for an increased effort to educate healthcare providers on hepatitis delta, as their lack of HDV-specific knowledge drives health disparities or differences between groups, where one group is more burdened by a disease than the other. These are driven by unequal opportunities to achieve good health (CDC, 2020). Health disparities are preventable, and educating providers is the first step to overcoming these inequalities. Educating providers on HDV will lead to more rapid identification of the disease, as they will have a better understanding of the signs, symptoms and risk factors for hepatitis delta. Increasing advocacy efforts for point-of-care testing for both HBV and HDV in the U.S. will increase levels of testing and earlier identification of people at risk for the diseases. Timely diagnosis allows for people to be linked to specialty care earlier, ultimately improving health outcomes. Improving community awareness of HDV will combat stigma and likely reduce testing hesitancy, which can improve health outcomes. The researchers call for drug developers to meet the needs of the patient community by developing tolerable and hepatitis delta-specific treatments.

In terms of drug development, researchers presented on antiviral treatments for people living with HDV and discussed preferred outcomes of treatment, based on what they believed to be most helpful to each individual’s physical health. To understand these treatment considerations, it is important to review how HDV functions. Hepatitis delta virus (HDV) uses a person’s RNA (ribonucleic acid) to produce and replicate the virus, so high HDV RNA levels in the blood indicate severe infection, and low or undetectable HDV RNA levels indicate that the virus is not rapidly reproducing (Stephenson-Tsoris & Casey, 2022). A virological response is defined as a long-term period of low-level replication that leads to undetectable HDV RNA levels in the blood six months after stopping treatment, and this indicates viral suppression (Yamashiro et al., 2004). A biochemical response is defined as normalization of alanine aminotransferase (ALT) levels after antiviral treatment (Kim et al., 2022). When liver cells are damaged, they release ALT into the bloodstream, so high levels of ALT indicate that one’s liver is diseased or damaged (MedlinePlus, n.d.). ALT normalization is considered a good indicator that antiviral therapy is working because it means that there is less liver damage, liver disease is less severe, and people living with HBV/HDV are at less risk of harm (Kim et al., 2022).

One study of interest from the meeting was the D-LIVR study by Eiger BioPharmaceuticals, Inc.: Lonafarnib Global Study in Chronic Hepatitis Delta. This study consisted of 400 participants, who were all on treatment for 48 weeks, then followed up with researchers 24 weeks after treatment. In total, 50 participants received pegylated interferon (Peg IFN) treatment for 48 weeks; 125 participants received a combination of Lonafarnib, Ritonavir and Peg IFN; and 175 participants received the oral antiviral therapy Lonafarnib and Ritonavir. There were also 50 people on a placebo treatment. A placebo is a harmless pill that has no effect on a person, and is often used in clinical trials to test the effectiveness of a specific treatment being studied, in this case, Peg IFN, Lonafarnib and Ritonavir (Harvard Health Publishing, 2021). The researchers decided that they wanted to see a decline in HDV RNA (virologic response) and normalization of ALT (biochemical response) at week 48 as their study’s main outcome or proof that the treatment could work. In this study, an acceptable virologic response was defined as a “2log decline of HDV RNA levels,” which means they wanted to see HDV RNA levels decrease by 99% from the original levels that were measured before starting treatment (Wikipedia, n.d.).

Pegylated interferon (Peg IFN) is a protein-based medication that prompts the body to activate its natural immune system (induce innate antiviral response) (Zhang & Urban, 2021; Drugbank, n.d.). For Peg IFN-based treatments, researchers determine that undetectable HDV RNA six months after stopping treatment is desirable. However, researchers emphasize the importance of yearly HDV RNA post-treatment screening to monitor for viral relapses after treatment. For long-term treatment (over 48 weeks), a 99% reduction of HDV RNA concentration levels is an appropriate virologic response for non-interferon-based treatments, but more studies must be done to establish whether a person living with hepatitis delta is actually benefiting from the treatment (this is called clinical benefit). When establishing the clinical benefits for non-interferon-based treatments (or any new treatment), researchers can measure delays in disease progression or improvement of signs and symptoms of the disease, which includes symptom relief, improved functioning and improved survival rates (Lee, n.d).

Based on a variety of extensive studies (not just D-LIVR), the researchers decided to combine virologic and biochemical responses to try to demonstrate the clinical benefit of using ongoing antiviral treatment as a functional cure for hepatitis delta. They concluded that acceptable endpoints for HDV treatment studies include undetectable HDV RNA six months after stopping treatment, the loss of the hepatitis B surface antigen (HBsAg), and ALT normalization in people living with chronic hepatitis delta. This can also be considered a functional cure since there are undetectable levels of HBsAg and HDV RNA in the blood for a sustained period of time, even after finishing treatment (Wong et al., 2022).

While there is still time before we overcome the burden of hepatitis delta, the presentations from The Liver Meeting show us that researchers and scientists are constantly working to improve the lives of people living with hepatitis delta. Development toward a functional cure is progressing, and advocates are incorporating peoples’ lived experiences and perspectives into drug development and education. Collaboration between all these groups is the best way to move forward in the fight against hepatitis delta.

For more information on hepatitis delta, you can visit the Hepatitis Delta Connect website or review this hepatitis delta fact sheet.

References

Centers for Disease Control and Prevention. (2020). Health disparities. Centers for Disease Control and Prevention, Division of Adolescent and School Health, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention. https://www.cdc.gov/healthyyouth/disparities/index.htm 

Drugbank. (n.d.). Peginterferon alfa-2a. Drugbank. https://go.drugbank.com/drugs/DB00008

Harvard Health Publishing. (2021, December 13). The power of the placebo effect. Harvard Health Publishing, Harvard Medical School. https://www.health.harvard.edu/mental-health/the-power-of-the-placebo-effect 

Kau, A., Vermehren, J., & Sarrazin, C. (2008). Treatment predictors of a sustained virologic response in hepatitis B and C. Journal of Hepatology, 49(4), 634-651. https://doi.org/10.1016/j.jhep.2008.07.013

Kim, S. H., Cho, E. J., Jang, B. O., Lee, K., Choi, J. K., Choi, G. H., Lee, J. H., Yu, S. J., Kim, Y. J., Lee, Y. B., Yoon, J. H., Kim, J. W., Jeong, S. H., & Jang, E. S. (2022). Comparison of biochemical response during antiviral treatment in patients with chronic hepatitis B infection. Liver International: Official Journal of the International Association for the Study of the Liver, 42(2), 320–329. https://doi.org/10.1111/liv.15086 

Lee, J. (n.d.). Defining Clinical Benefit in Clinical Trials: FDA Perspective [Presentation]. U.S. Food and Drug Administration, Center for Drug Evaluation and Research. https://celiac.org/main/wp-content/uploads/2015/04/great3-07.pdf 

MedlinePlus. (n.d.). ALT blood test. National Library of Medicine (U.S.). [updated August 3, 2022]. https://medlineplus.gov/lab-tests/alt-blood-test/ 

Raman, S. (2022 October 25). Administration eyes national hepatitis C treatment plan. Roll Call: Policy. https://rollcall.com/2022/10/25/administration-eyes-national-hepatitis-c-treatment-plan/ 

Stephenson-Tsoris, S., & Casey, J. L. (2022). Hepatitis delta virus genome RNA synthesis initiates at position 1646 with a nontemplated guanosine. Journal of Virology, 96(4), e0201721. https://doi.org/10.1128/JVI.02017-21 

Wikipedia. (n.d). Log reduction. https://en.wikipedia.org/wiki/Log_reduction

Wong, G. L. H., Gane, E., & Lok, A. S. F. (2022). How to achieve functional cure of HBV: Stopping NUCs, adding interferon or new drug development?. Journal of Hepatology, 76(6), 1249–1262. https://doi.org/10.1016/j.jhep.2021.11.024

Yamashiro, T., Nagayama, K., Enomoto, N., Watanabe, H., Miyagi, T., Nakasone, H., Sakugawa, H., & Watanabe, M. (2004). Quantitation of the level of hepatitis Delta virus RNA in serum, by real-time polymerase chain reaction—and its possible correlation with the clinical stage of liver disease. The Journal of Infectious Diseases, 189(7), 1151–1157. https://doi.org/10.1086/382133

Zhang, Z., & Urban, S. (2021). New insights into HDV persistence: The role of interferon response and implications for upcoming novel therapies. Journal of Hepatology, 74(3), P686-699. https://doi.org/10.1016/j.jhep.2020.11.032

Hepatitis B Research, Research, United States

If You Have Hepatitis B, Donating Your Blood May Change the Face of Hepatitis B Testing.

The Hepatitis B Foundation has partnered with Plasma Services Group to educate people living with Hepatitis B about the critical need for blood donation. This is not like the local blood drives you always hear about. Instead, Plasma Services Group focuses on specialty plasma collection which supports the making of diagnostic tests used in labs around the world. The demand for HBV testing grows every year, but access to those tests is not assured. As you know, only 25% of people in the U.S. and 10% of people worldwide with Hepatitis B have been diagnosed. With your help, we can reduce those real-life barriers to Hepatitis B testing and improve lives. Follow the link.

How do I donate?

Donating your blood to Plasma Services Group is easy. After you complete this form, they will reach out to you if you are a good candidate for blood donation. If chosen, they will send a phlebotomist to your home to complete the blood-draw.  PSG compensates participants financially as a thank you for the trust, time and efforts associated with donation. This program is only available to U.S. residents who are preferably in the Northeast. You must be 18 years of age or older and weight 110 pounds or more. You must be living with chronic Hepatitis B, which means you have had Hepatitis B for over 6 months.

Why this is important to the future of Hepatitis B?

As you may know, access to good healthcare isn’t always easy. By creating new blood tests, we can help diagnose Hepatitis B more reliably which helps more people get into care and manage their hepatitis B. Your blood donation could directly impact the detection, care and quality of life for millions of people living with hepatitis B who have not been diagnosed yet, as well as those who are managing their care on a daily basis.

Despite the large population of people living with hepatitis B, it is hard for companies that source biological raw materials to recruit donors. Most people are unaware of the large amount of blood plasmas that are essential to manufacture test kits. Rarer subtypes that are prevalent in Africa and Asia, where the need for detection is the highest and growing the fastest, are even harder to find in N. America. By becoming a regular donor to Plasma Services Group, you are filling a vital role for the medical diagnostic industry and helping to close the gap between patient and care.

Get started today!

Fill out this form and Plasma Services Group will fill you in on next steps.

300 Million Reasons, About Hepatitis B, HBV, Hepatitis B Awareness, Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Hepatitis B Research, Liver, Research

Reactivation with Hepatitis B: Understanding Risk Factors and Prevention Strategies

Understanding the hepatitis B virus and the panel of blood tests needed to determine infection or immunity can be a stressful and challenging task. In simplest terms, “hepatitis” means liver inflammation and the hepatitis B virus can ultimately cause liver inflammation. The liver is an important organ in the human body and responsible for the removal of toxins and regulation of digestion (learn more about the function of the liver here). The hepatitis B virus can infect and disrupt critical functions of the liver in supporting your overall health. 

How the hepatitis B virus works 

In the case of the hepatitis B virus, the host is the liver cell. As the virus makes more copies of itself, the liver may become damaged, and sometimes it is unable to carry out its essential tasks to regulate metabolism, nutrients, and digestion. It is best to prevent hepatitis B infections when we can – and since antibodies are the best defense against the virus, the hepatitis B vaccine can be used to signals the body to make antibodies to fight the virus. The hepatitis B vaccine provides lifelong protection from the virus. However, this is only possible before infection with the virus. If somebody is already infected with the virus, antiviral therapy is used to control the virus and prevent liver damage – antiviral medications disrupt the life cycle of the virus by disabling viral receptors from binding to liver cells. 

Blood test panel to diagnose hepatitis B: 

The only way to tell someone’s hepatitis B status is through a panel of blood tests – the tests are all done at one time, and only one small tube of blood is needed. These tests are not included in routine testing, so it is important to ask your doctor to test you for hepatitis B or try to find a free screening event near you (http://www.hepbunited.org/). The panel consists of the following tests to determine your hepatitis B status: 

  1. HBsAg: 
    • This tests for the hepatitis B surface antigen in someone’s blood. The surface antigen is the protein that surrounds the virus and protects it from attack by the host. A positive surface antigen test indicates that the virus is present in the body. A “positive” or “reactive” result for HBsAg indicates that someone is infected with hepatitis B and can transmit the virus to others.  
  1. HBsAb 
    • This tests for the hepatitis B surface antibody in someone’s blood. The surface antibodies are produced by the immune system and can fight off the virus by attaching to the surface antigen protein. This test can detect the presence of these antibodies. Ideally this test will be ordered quantitatively (numerically). A “positive” surface antibody test (meaning numbers reading >10 IU/mL) means that a person has protection against the hepatitis B virus (either by vaccine or from a past exposure).  
  1. HBcAb (total) 
    • This is known as the hepatitis B core antibody test. The core antibody is produced by the immune system after infection with the virus. This test indicates an existing or past infection of the hepatitis B virus.  

 

To learn more about interpreting your test results, click here. 

Important things to know about Hepatitis B Core Antibody (HBcAb) 

Someone who has markers of past infection, particularly hepatitis B core antibody, can be at risk for hepatitis B reactivation. Reactivation can be triggered by immunosuppressive therapies and cause significant life-threatening challenges. If you test HBcAb+, please talk to your doctor about what that means, and make sure you notify all future health care providers. 

How is reactivation with HBV defined? 

Reactivation is defined as the sudden increase or reappearance of HBV (hepatitis B virus) DNA. When the virus invades the cell, it forms a covalently closed circular DNA (cccDNA) in the nucleus of infected cells referred to as hepatocytes. Because cccDNA is resistant to antiviral treatments, it is never removed from the cells. Therefore, even after recovery from a past infection, the cccDNA is present and may reactivate. It is not clearly understood why this may happen, but certain factors may increase the risk for reactivation.  

To learn more about the core, click here. 

What puts one at risk for reactivation? 

  1. Virologic factors such as high baseline HBV DNA, hepatitis B envelope antigen positivity (HBeAg), and chronic hepatitis B infection that persists for more than 6 months.
    • Detectable HBV DNA levels and detectable levels of HBsAG can increase the risk for HBRr (reactivation) 
    • Testing positive for HBeAg also increases the risk for reactivation 
  2. Co-infection with other viruses such as hepatitis C or hepatitis Delta 
  3. Older age 
  4. Male sex 
  5. Cirrhosis 
  6. An underlying condition requiring immunosuppressive therapies (rheumatoid arthritis, lymphoma, or solid tumors) 
    • Certain medications can increase the likelihood of reactivation by more than 10%.  
    • B-cell depleting agents such as rituximab, ofatumumab, doxorubicin, epirubicin, moderate or high-dose corticosteroid therapy lasting more than 4 weeks. 

How to prevent reactivation of hepatitis B 

Hepatitis B reactivation is a serious condition that can lead to health complications, Reactivation is avoidable if at-risk individuals are identified through screening. Current guidelines recommend that individuals at the highest risk (those receiving B-cell depleting therapies and cytotoxic regimens) should receive antiviral therapies as prophylaxis before beginning immunosuppressive therapy. These antiviral therapies should also be continued well beyond stopping the immunosuppressive therapies. Be sure to talk to your doctor to be sure you are not at risk for reactivation.  

References 

Hepatitis b virus reactivation: Risk factors and current management strategies.

Reactivation of hepatitis B virus: A review of Clinical Guidelines.

https://aasldpubs.onlinelibrary.wiley.com/doi/10.1002/cld.883

https://www.hepb.org/prevention-and-diagnosis/diagnosis/understanding-your-test-results/

Clinical Trials, HDV, Hepatitis D Drug Development, Hepatitis Delta (HDV), News, Research

Results from Hepatitis Delta Clinical Trials Announced at International Liver Congress 2022

London, UK was the host city for this year’s annual International Liver Congress (ILC), the yearly meeting of the European Association for the Study of the Liver (EASL), which took place from June 22nd-26th. This meeting provides an opportunity for those working to address liver diseases around the world to gather in one location and exchange ideas, present research, and work to advance diagnosis, prevention, treatment, and elimination of these serious conditions. This year’s meeting saw significant attention given to hepatitis delta, as new treatments continue to move through the pipeline and more widespread approval for prescription of current treatments is sought. Below is a quick snapshot of some of the presentations!

The US-based pharmaceutical company Gilead Sciences, Inc. demonstrated with results from a Phase 3 clinical trial that treatment with Hepcludex (bulevirtide), the first medication ever approved for hepatitis delta (HDV), has been shown to achieve significant response in chronic HDV. After 48 weeks, 48% of study participants who received different doses of treatment with Hepcludex achieved virological response (meaning a decline in hepatitis delta viral load, ALT normalization, and a change in liver stiffness), compared to only 2% of those who had not received any treatment. When compared to results from clinical trials after 24 weeks, response rates to HDV only improved, showing the drug to be even more effective over time. Throughout the clinical trials, there have been no adverse events reported that are attributable to this treatment.

Hepcludex has also been found to have a positive impact on the quality of life of individuals living with hepatitis delta, and their overall ability to manage the condition. There were improvements found in health distress, performance of daily activities related to hepatitis, emotional impact of hepatitis, and ability to work. This data reinforces the efficacy and safety of Hepcludex and hopefully strengthens the case for approving the drug in more parts of the world.

“As the most severe form of viral hepatitis, HDV presents a significant disease burden with high healthcare-related costs and until recently, no approved treatment options,” said Heiner Wedemeyer, MD, Director, Clinic for Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, and principal investigator of the study. “These results presented at ILC 2022 not only highlight the important clinical role that bulevirtide has to play as a safe and effective treatment option for chronic HDV, but critically also demonstrate that with prolonged treatment, we can achieve higher response rates so we can better manage this rare, life-threatening disease in more people.”

Presently, Hepcludex has been conditionally approved by the European Commission for prescription in France, Germany, and Austria. It has not yet been approved by the United States Food and Drug Administration (FDA) or in other countries. A Biologics License Application was submitted by Gilead to the FDA in late 2021 for injection of 2mg of Hepcludex to treat adults with HDV and compensated liver disease. Hepcludex had previously been granted Breakthrough Therapy and Orphan Drug designations by the FDA and PRIority MEdicines (PRIME) scheme eligibility by the European Medicines Agency (EMA).

The second company to present their research findings at the ILC was US-based Eiger BioPharmaceuticals, Inc. The two primary hepatitis delta drugs that they have in the pipeline are called lonafarnib and peginterferon lambda. One abstract presentation indicated that peginterferon lambda (lambda) had better antiviral activity and tolerability than peginterferon alfa (the previous version of this drug that has been used as the only somewhat effective, but off-label treatment for hepatitis delta since the early 1980s). Lambda has been shown to block production of new hepatitis delta virus very effectively. Additionally, lambda in combination with lonafarnib was found to lower levels of HDV RNA and decrease its production and release, more effectively than lambda by itself. Patterns in HBV DNA, hepatitis B surface antigen, and ALT were also observed as part of this study. In its Phase 3 D-LIVR study, which is assessing the safety and efficacy of lonafarnib in combination with ritonavir, with and without peginterferon alfa, Eiger has assembled the largest cohort of global participants in an HDV study, and therefore the largest body of data. Results from this study are anticipated by the end of 2022.

The final piece of big hepatitis delta news to come out of the conference was the announcement from Vir Biotechnology Inc. that they are beginning a Phase 2 clinical trial for VIR-2218 in combination with VIR-3434 for the treatment of chronic hepatitis delta. Initial data from this study is anticipated in 2023.

Hepatitis delta is now receiving more attention than ever before and there is only more hope as new treatments are created, investigated, approved, and made available. For a complete overview of hepatitis delta, including basic information, resources, clinical trial opportunities, and a complete list of drugs that are in the pipeline, visit www.hepdconnect.org.

References

https://www.gilead.com/news-and-press/press-room/press-releases/2022/6/treatment-with-hepcludex-bulevirtide-meets-primary-endpoint-and-achieves-significant-response-in-chronic-hepatitis-delta-virus-at-48-weeks

https://www.streetinsider.com/Corporate+News/Vir+Biotechnology+Inc.+%28VIR%29+Announces+New+Clinical+Data+From+its+Broad+Hepatitis+B+Program/20256465.html

https://www.prnewswire.com/news-releases/eiger-biopharmaceuticals-announces-results-from-multiple-presentations-at-the-european-association-for-the-study-of-the-liver-easl-international-liver-congress-2022-301576119.html

Baruch S. Blumberg Institute