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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/

Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Living with Hepatitis B

Diagnosed with Hepatitis B? Preventing Transmission to Others. Learning the HBV Basics Transmission – Part III

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How can you prevent future transmission? Now that you are aware of your infection, it’s easier than you think.  In a perfect world, everyone would be vaccinated against HBV and be protected, but of course this is sometimes not the case. Always encourage HBV vaccination when possible now that you understand the importance of this safe and effective 3-shot series. However, the vaccine does take time to complete, so in the interim, some general precautions will keep you and everyone you know safe.

Always maintain a barrier between blood and infected body fluids and any open cuts, mucous membranes (eyes, nose or mouth), or orifices of someone else. Keep cuts, bug bites – anything that bleeds or oozes – covered with a bandage. Also, remember to carry a spare bandage.  These are some simple prevention methods.

Do not consider unprotected sex unless you are sure your partner has had all 3 shots of the HBV vaccine series. And remember to consider the risks of other infectious diseases that are transmitted sexually if you are not in a monogamous relationship.  Multiple sex partners and non-monogamous relationships expose you to the potential of more health risks and even the possibility of a co-infection.  Co-infections are when someone has more than one serious chronic condition (like HBV and HCV , HBV and HIV or HBV and HDV).  Co-infections are complicated health conditions that you want to avoid. Therefore, practice safe sex by using a latex or polyurethane condom if you have multiple partners.

General precautions include carefully handling of your own blood, tending to your own blood spills when possible, and properly disposing of feminine hygiene products. Properly dispose of blood stained materials in tightly closed plastic bags. If someone else must tend to your bleeding wound or clean up your blood spill, be sure they wear gloves, or maintain a barrier, and wash their hands thoroughly with soap and water.  Many germs and virus (like HBV) can be effectively killed when cleaned using a diluted bleach solution of 1 part bleach to 9 parts water.  Ideally this solution should be made when needed as the shelf life is limited.  Everyone should use these basic precautions – with or without a known HBV infection.  Make this part of your daily life.

And what about your personal items?  Well it’s best if they are kept personal and out of common areas unless everyone is vaccinated. This includes things like razors, nail clippers, files, toothbrushes and other personal items where microscopic droplets of blood are possible.  This is good practice for everyone in the house. After all, you may not be the only one with an infection. Simple changes in daily habits keep everyone safe.

If those at risk in your life that are not already vaccinated or have not recovered from a past infection (Get tested first!), then they need to start the series immediately. This includes sexual partners and close house hold contacts and  family members. The HBV vaccine is a safe and effective 3-shot series.  Timing may be of concern or a sense of urgency, so just get it started. The regular schedule is completed within six months. Tack on an extra month and ask their doctor to test surface antibody (anti-HBs) titers 1-2 months following the last shot of the series to ensure that adequate immunity has been generated by the vaccine.  This is not standard routine but will help insure those at higher risk that they are protected. In the interim, remember to practice safe sex with your partner using latex or polyurethane condoms.

The timing of the antibody titre should be 4-8 weeks following the last shot of the series. If titers are above 10 then there is protection for life.  If someone has been previously vaccinated a titer test may show that their titers have waned and dipped below the desired reading. There is no reason to panic, as a booster shot can be administered and then a repeated titer test one month later will ensure adequate immunity. Once you know you have generated adequate titers, there is no need for concern of transmission.

When recovering from an acute infection, if your follow up blood test results read: HBsAg negative, HBcAb positive and HBsAb positive then you have resolved your HBV infection and are no longer infectious to others and you are no longer at risk for infection by the HBV virus again.

However if your follow up blood tests show that you are chronically infected or your infection status is not clear, you will want to take the precautionary steps to prevent transmitting your HBV infection to others. You will also need to talk to your doctor to be sure you have the appropriate blood work to determine your HBV status and whether or not you are chronically infected.

Please be sure to talk to your doctor if you are unsure, and don’t forget to get copies of those labs. Check out  transmission part I and part II if you are looking for a little more transmission information.

Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Living with Hepatitis B

Diagnosed with Hepatitis B? Preventing Transmission to Others Learning the Hep B Basics, Transmission Part II

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Part I discussed how hepatitis B is transmitted and may have helped you determine how you were infected with hep B.   In Part II we will discuss the people closest to you who may be susceptible to your infection.

Anyone exposed to Hep B is susceptible. This is true if you have not already been vaccinated, or are not taking precautions. Hep B does not discriminate. However, those most susceptible to infection are your sexual partners, close household contacts or family members. Why are the these people more susceptible?  Remember that HBV is transmitted through direct contact with blood and sexual fluids, so sexual partners will be at risk. Unfortunately even close contacts without sexual intimacy may also be at risk. These include family members or roommates that might borrow your razor, the nail clippers on the downstairs counter, or your favorite pair of pierced earrings or body jewelry. Such personal items may have trace amounts of blood on them. All you have to do is keep them separate until everyone is tested and vaccinated.

Hepatitis B is NOT spread casually. You will not get HBV by co-existing in the same house, sharing a meal or eating food prepared by someone with hepatitis B. You will not get hep B by sneezing, kissing, hugging or holding someone with hepatitis B.

Hepatitis B can live outside the body for a week. It just makes sense that the odds of an exposure are more likely with someone you live with just due to the increased potential for daily exposure in simple grooming routines or household activities where blood could be exchanged. The good news is that hep B is preventable.

It is important to know that unvaccinated babies and young children are more susceptible to Hep B. In fact 90% of babies and up to 50% of young children infected with hep B will have life-long infection. This is a complicated topic, but basically their immune systems are immature. That is why young babies and young children may have high viral loads, but usually less damage. The immune system gets tricked and the virus replicates unchecked in liver cells.  That is why hepatitis B vaccine series, starting with a birth dose, is so important for babies and young children.

So what should you do? You need to do the right thing. You need to talk to sexual partners and close contacts and family members now that you know you are infected. You don’t need to tell everyone; just those that you believe are at risk. Tell them to ask their doctor to run a hepatitis B panel.

The hepatitis B panel is one blood test with 3 parts: HBsAg – surface antigen;  HBcAb – core antibody; and HBsAb – surface antibody.  When read in combination, this one test can tell your close contacts if they are currently infected, have recovered from a previous infection, and whether or not they have immunity to the hepatitis B virus. Typically the blood test results are straight forward, but sometimes they can be tricky. Ask those tested to discuss their results with their doctor, and to keep a copy of the blood tests results for later review.

One important factor for those that may have been exposed is the timing. There is up to a 9 week window period between an exposure to hep B and when the hepatitis B virus shows up in the blood resulting in a positive test result.  If you tell your partner and they insist on immediate testing, they need to understand that they will need to be re-tested 9 weeks later to ensure whether or not they have been infected. AND, it is essential to practice safe sex and follow general precautions until everyone is sure of their status –both the known and potentially infected.

Remember you may still be in a waiting period trying to determine if you are acutely or chronically infected. Very possibly you have not had symptoms with your hep B. Nearly 70% of those with newly infected with HBV have no notable symptoms. It’s also very likely you are unsure when you were infected.  And of course it’s possible you are chronically infected and have had hep B for quite some time. It’s stressful and little confusing not knowing the details of your infection, but you need to move forward doing the right thing and talking to those at risk and taking care of yourself.

Take a look at Part I and Part III for further discussion of hep B transmission.

Hepatitis B Diagnosis & Monitoring, Living with Hepatitis B

Newly Diagnosed with Hepatitis B? Acute or Chronic? Learning the Hep B Basics

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Image courtesy of dream designs at FreeDigitalPhotos.net
Image courtesy of dream designs at FreeDigitalPhotos.net

If you’ve just been diagnosed with hepatitis B after a routine blood test or following a blood donation, you may be feeling overwhelmed with information about this complicated infection and references to acute or chronic hepatitis B.

Here is an explanation of these two terms and what happens when you’re first infected with the hepatitis B virus (HBV). Hepatitis B is transmitted through blood and sexual fluids. It can be spread during unprotected sex, unsafe medical procedures, exposure to blood that enters your body through a cut,  or by sharing personal items such as razors, body jewelry or toothbrushes. Most commonly it is spread during childbirth when the mother is infected.

What is a chronic infection? When we’re infected as newborns or young children, our immature immune systems don’t notice or fight the virus and it travels to our liver and begins reproducing. With no opposition from our immune systems, a hepatitis B infection can continue for years. When a hepatitis B infection lasts longer than six months, it is considered a chronic or long-term infection. Most people with chronic hepatitis B were infected at birth or during early childhood. Immunization with the hepatitis B vaccine and hepatitis B immune globulin (HBIG), if available, within 12 to 24 hours of birth can break this mother-to-child infection cycle, but sometimes the birth dose of the hep B vaccine,  and more often HBIG, is not always available around the world. The birth dose must be followed with the remaining doses of the vaccine, often given as part of a combination vaccine according to schedule. Here are the U.S. and International hep B vaccine schedules. 

What is an acute infection? When we’re infected with HBV as healthy adults, about 90 percent of us are able to get rid of the infection within six months. It can take up to six months for our immune systems to generate antibodies and get rid of the infection in our liver. This short-term infection is called acute hepatitis B.

To determine if you have an acute or chronic infection, you must be tested for hepatitis B over a six-month period. The specific test that indicates if you are infected is the hepatitis B surface antigen (HBsAg) test. This antigen covers the surface of the virus and there are usually lots of HBsAg in your blood when you’re infected. If you test positive for HBsAg for longer than six months, it means you have a chronic hepatitis B infection.

But, if you no longer test positive (or “reactive”) for HBsAg after six months and you develop hepatitis B surface antibodies (HBsAb), then you have cleared hepatitis B after an “acute” infection. There are some additional blood tests that your doctor may order to get a better understanding of your infection, but not everyone has access to these tests. Some tests are rather expensive and they may still need to be repeated over time in order to confirm the diagnosis. Please be patient. The good news is that hepatitis B is not typically an emergency.

Here is more good news. If you are a healthy adult and are newly or acutely infected, know that your chances are good that the hepatitis B infection will go away on its own. It is rare that you require medication to get rid of the virus, your immune system does that for you.  A person with a new hepatitis B infection may not have any symptoms, or they may not be very notable. For example, you might feel more tired. About 70 percent of people newly-infected with hepatitis B never experience symptoms.

But, some people experience severe symptoms like jaundice (yellowing skin or eyes), severe nausea or vomiting, or a bloated stomach (unrelated to your weight), and they need to see a doctor immediately. If you have a new or acute infection, even these drastic symptoms may not necessarily mean that you need any form of treatment, but you will need to be monitored with additional tests to make sure your liver is safe. (Tests like ALT/AST, platelets and bilirubin.)

If you can’t confirm you were infected as a child, you will need to wait the six months to find out if you cleared your infection. Please be patient and do not panic, but remember you need to take precautions during this time to make sure you do not spread the infection to others. Practice safe sex (use a condom), and don’t share personal hygiene items that may have trace amounts of blood on them.

We also  suggest that family members, close household contacts and sexual partners get tested for hepatitis B and vaccinated if needed. Have them get the triple hepatitis B panel: HBsAg, HBcAb total and HBsAb. This will tell them if they have a current infection, if they recovered from a past infection, or if they are vulnerable and need to be vaccinated. This helpful chart will help with understanding blood tests.  There can be up to a nine-week period right after infection when they may not test positive for HBsAg even if they have been infected.  Repeat testing if unsure.

Hepatitis B Advocacy, Hepatitis B Prevention, Living with Hepatitis B

Celebrate Asian-Pacific American Heritage Month, And Get Tested for Hepatitis B

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Image courtesy of hin255 at FreeDigitalPhotos.net
Image courtesy of hin255 at FreeDigitalPhotos.net

May is Asian-Pacific American Heritage Month – a celebration of Asians and Pacific Islanders in the United States. The month of May was selected in 1978 to mark the first major Japanese immigration to the United States (May 7, 1843), and the completion of the transcontinental railroad (May 10, 1869), built primarily by Chinese immigrants.

Like all immigrants, Asians and Pacific Islanders brought with them unique cultures, languages, and lingering health problems from their homeland, including hepatitis B.

This blood-borne infection, unknowingly passed from mother-to-child, is an infection without a cure that would impact Asian immigrants and their children for decades until a vaccine was developed.

Today, administration of the first dose of the hepatitis B vaccine along with a dose of HBIG within 12 hours of birth severs this viral legacy and protects newborns from inheriting this infection. But that is not the end of the story. There are still many Asian-Americans who remain infected, and many Asian immigrants arriving today live with hepatitis B.

An estimated one in 12 Asian-Americans currently has hepatitis B, and two in three don’t know they are infected. Their infection rate is more than 20 times higher than that of the total U.S. population. Hepatitis B is the greatest health disparity between Asian-Americans and the general U.S. population. Approximately 1 million Asian-Americans are living with chronic hepatitis B infection – that’s about half of all cases in the United States. Continue reading "Celebrate Asian-Pacific American Heritage Month, And Get Tested for Hepatitis B" →

Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Liver Cancer

It’s Hepatitis Awareness Month: Five Reasons We Don’t Get Tested, and How to Overcome Them

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Members of Drexel University's Asian Pacific American Medical Student Association participate in a hepatitis B screening program at a Chinese Christian church in Philadelphia.
Members of Drexel University’s Asian Pacific American Medical Student Association participate in a hepatitis B screening program at a Chinese Christian church in Philadelphia.

May is Hepatitis Awareness month. Why do we need an annual reminder about hepatitis B? Because 65 percent of the estimated 2.2 million people in the U.S. living with hepatitis B don’t know they’re infected.

Studies show when people know their hepatitis B status, they’re more likely to get monitored regularly, get treatment, and take steps to avoid passing on the disease to partners and their children.

So why are so many Americans unaware of their hepatitis B infection? Here are five roadblocks that stop us from getting tested for hepatitis B, and what how we can do to overcome them.

We feel fine, so we assume we’re not infected. Hepatitis B rarely causes symptoms. There are very few sensory nerves around the liver, so when a viral hepatitis infection strikes, we rarely feel its effects. As a result, most of us – especially if we were infected as children or newborns – never experience any symptoms for decades. So remember, “feeling OK” is no excuse to avoid testing. Continue reading "It’s Hepatitis Awareness Month: Five Reasons We Don’t Get Tested, and How to Overcome Them" →

Hepatitis B Diagnosis & Monitoring, Hepatitis B Prevention, Living with Hepatitis B

How Was I Infected with Hepatitis B? Making the Journey from Anger to Acceptance

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Image courtesy of stockimages at FreeDigitalPhotos.net
Image courtesy of stockimages at FreeDigitalPhotos.net

By Christine Kukka

“How did I get infected? Who could have infected me?” These questions are common when we are first diagnosed with hepatitis B.

Dumbfounded by the news, we struggle to understand when this infection could have occurred and who could have infected us with a virus that now threatens our health and well-being.

This diagnosis not only affects our health, it can weaken the trust we’ve placed in family members, friends and lovers. It threatens to dismantle basic beliefs we’ve held about fairness and honesty, and the assumption that if we treated people well that we would be treated fairly in return. Infections know no moral codes and ignore all the unspoken deals we have made with the universe. Continue reading "How Was I Infected with Hepatitis B? Making the Journey from Anger to Acceptance" →

Hepatitis B Diagnosis & Monitoring, Hepatitis B Treatment, Liver Cancer, Living with Hepatitis B

Taking Antivirals Long-Term for Hepatitis B? Should You Worry About Bone Loss?

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Image courtesy of Sira Anamwong at FreeDigitalPhotos.net.
Image courtesy of Sira Anamwong at FreeDigitalPhotos.net.

By Christine Kukka

To prevent liver damage and cirrhosis and reduce the risk of liver cancer–especially in older patients who’ve had hepatitis B for decades–doctors often prescribe long-term antiviral treatment. But some antivirals cause minor bone loss, which poses a problem for older patients with osteoporosis.

According to experts, the risk of bone loss from long-term antiviral treatment is low, and in fact some antivirals do not cause any bone loss at all. But if you are starting antivirals at an older age, or if you have been on antivirals long-term, experts recommend you monitor your potassium and vitamin D levels and regularly test for bone loss in the hip area so you know if you are experiencing bone loss and need a calcium or vitamin D supplement. Continue reading "Taking Antivirals Long-Term for Hepatitis B? Should You Worry About Bone Loss?" →

Hepatitis B Diagnosis & Monitoring, Hepatitis B Treatment, Liver Cancer, Living with Hepatitis B

Diagnosed With Chronic Hepatitis B? What Does Your HBV DNA Test (Viral Load) Tell You?

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Image courtesy of Praisaeng, at FreeDigitalPhotos.net.
Image courtesy of Praisaeng, at FreeDigitalPhotos.net.

If you have been diagnosed with chronic hepatitis B, your doctor has probably run several blood tests that show if the infection is harming your liver and identify what stage of infection you are in.  Doctors consider all of these results when deciding if you need treatment and how often you should be monitored.

In this blog, we’ll examine how one of the tests — the HBV DNA or viral load test –can give you a snapshot into your hepatitis B infection and your health. The HBV DNA test  is performed on a blood sample using a Polymerase Chain Reaction (PCR) technique that rapidly generates HBV DNA fragments so they can be measured. Today, viral load is usually measured using international units per milliliter (IU/mL). However, in the past it was measured in copies per milliliter (copies/mL), and in some regions and labs, it is still used.

If you ever need to convert copies into international units, there are about 5.6 copies in one international unit, so 5,000 copies/mL equals about 893 IU/mL. Remember to keep copies of your lab information on file so you can track your status. An Excel spreadsheet works great.

The sensitivity of HBV DNA tests may vary with each lab so it’s a good idea to use the same lab for your test. Labs usually measure down to less than 200 IU/mL. Below the threshold, the viral load is considered “undetectable” – something everyone with chronic hepatitis B wants to hear.

How HBV DNA results are presented mathematically on your lab report can be confusing. Because the amount of virus in the blood may be very high – in the millions or billions – the result may be displayed as an exponent or a log, rather than a whole number. You may need to convert these numbers to fully understand them.

What does viral load say about what stage of the virus you are in? Your viral load also varies over time depending  on the “stage” of hepatitis B infection. That is why regular monitoring is so important. 

Children and adults in the “immune tolerant” stage can have viral loads in the millions or even billions. It sounds scary, but it’s not unusual. Your viral load can remain very high for decades until your immune system begins attacking the virus. Most children and young adults who test positive for the hepatitis B “e” antigen (HBeAg) generally have high viral loads, though doctors typically don’t treat patients in this stage. Once their immune systems get rid of HBeAg and generate “e” antibodies (HBeAb), their viral loads begin to decline and liver enzymes (ALT/AST) normalize.

Adults with undetectable or low viral loads and no signs of liver damage are in an “inactive” stage. Adults with normal ALT (SGPT) levels, which usually indicate no current  liver inflammation, and undetectable or viral loads less than 2,000 IU/mL generally do not require treatment. However, it is important to confirm with your doctor that there is no evidence of advanced liver disease. This phase may be lifelong, decades, or not long at all. That is why monitoring in this inactive phase remains important.

People in the “active” stage with elevated viral loads and signs of liver damage need treatment. These may be people that are HBeAg positive and unable to seroconvert and lose HBeAg and gain the antibody without experiencing significant liver damage. There may be a pattern of SGPT/ALT elevation that cycles up and down over time without mounting an adequate immune response to seroconvert. This can be dangerous, causing liver damage, which is  why regular monitoring is key. You want to give your immune system the opportunity to try to mount an immune response and seroconvert but not at the expense of extensive liver damage. That’s why a knowledgeable doctor is so important!

Many people in their 40s, 50s or 60s, develop HBeAg-negative hepatitis B, though this may occur in younger individuals as well. Although individuals may have seroconverted and lost HBeAg (HBeAg negative/HBeAb positive), the virus is able to mutate allowing it to keep replicating, putting these patients at risk of liver damage. They may see the viral load start to creep up along with SGPT/ALT. Eventually they may require treatment with antivirals based on clinical guidelines doctors follow to manage their patients. Once again, monitoring is key!

Why is it important to measure HBV DNA during treatment? When daily antiviral pills (either tenofovir or entecavir) are prescribed, doctors measure your HBV DNA to see if the drug is working to reduce your viral load. Antivirals work by meddling with the viral DNA so the virus cannot reproduce effectively. Doctors measure your viral load to make sure the antiviral is working.

Why is measuring viral load important if you’re pregnant? Today, all pregnant women are screened for hepatitis B, and experts also want their viral loads to be measured. When pregnant women have high viral loads—exceeding 200,000 IU/mL—medical guidelines recommend antiviral therapy during their third trimester of pregnancy to reduce their risk of infecting their newborns. Babies born to HBV-infected women can become infected even if they are immunized at birth and treated with HBIG (hepatitis B antibodies) if their mothers have high viral loads.

It is important to remember that a viral load test provides you with important information, but it must be considered in relation to your other HBV and liver function tests results to determine if treatment is needed at all, or if you are responding favorably to current treatment. Although an undetectable or low viral load is good news, it does not necessarily guarantee that you have not, or will not experience liver damage. Hepatitis B is a tricky virus. Talk to your liver specialist about all of your test results.

Hepatitis B Diagnosis & Monitoring, Liver Cancer, Living with Hepatitis B

Can People with HBeAg-Negative Hepatitis B Ever Stop Taking Antivirals?

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Image courtesy of rakratchada torsap, at FreeDigitalPhotos.net.
Image courtesy of rakratchada torsap, at FreeDigitalPhotos.net.

Medical guidelines suggest that individuals with HBeAg-negative hepatitis B with signs of liver damage face an “indefinite” or even lifetime commitment to taking daily antiviral pills.

In this week’s blog, we explore when—if ever—individuals with hard-to-treat HBeAg-negative hepatitis B can ever stop taking antivirals.

First of all, what is HBeAg-negative hepatitis B? Many people infected with hepatitis B at birth and who remain infected into their 40s, 50s or 60s, develop HBeAg-negative hepatitis B. Researchers believe that over time the virus mutates to evade the immune system. Though individuals may have lost the hepatitis B “e” antigen (HBeAg) and developed the “e” antibody, this mutated virus develops the ability to keep replicating despite the loss of HBeAg. And this mutated virus is capable of putting people at higher risk of liver damage.

Generally, doctors recommend treatment to HBeAg-negative patients when their viral load exceeds 2,000 IU/ML and their ALT liver enzyme levels, which rise when liver cells are damaged, are even moderately elevated. (Normal ALT levels are less than 30 for men and 19 for women.)

The most common antiviral treatments are either entecavir (Baraclude) or tenofovir (Viread). These two are considered the most powerful at quickly reducing viral load (HBV DNA) and have a very low risk of causing drug resistance, which is critical considering the long-term treatment required by HBeAg-negative patients.

But can individuals with HBeAg-negative hepatitis B ever stop treatment? Antivirals are expensive, without insurance tenofovir costs about $1,000 a month and generic entecavir costs about $407 in the U.S. Additionally, long-term antiviral treatment can cause bone loss.

Late last year, hepatitis B experts with the American Association for the Study of Liver Disease (AASLD) tackled this question and reviewed recent studies that followed HBeAg-negative hepatitis B patients who stopped antivirals. They found that even when these patients enjoyed two years of undetectable viral load and normal ALT levels during treatment, when they stopped only half of them were able to maintain a low viral low (below 2,000 IU/mL) and normal ALT levels.

The risk of dangerous “flares” after stopping treatment, “requires careful weighing of potential for harm and benefit,” the experts wrote. This is important because many HBeAg-negative patients are older and more vulnerable to liver damage and cancer.

In their new recommendations, AASLD experts make clear their findings are “conditional” and the quality of evidence found in the studies they reviewed is “low.” However, this is what they tentatively recommend:

  • Stopping treatment, “may be considered in persons who have (lost) the hepatitis B surface antigen (HBsAg). However, there is currently insufficient evidence to definitively guide treatment decisions for such persons.”
  • And, anyone who stops antiviral therapy should be monitored every three months for at least one year to see if their viral load rebounds or if they have signs of liver damage, including ALT flares.

Given the knowledge-gap about the long-term health consequences of HBeAg-negative hepatitis B, more research with longer durations of monitoring are needed, experts recommended. “Alternative treatment strategies for patients on long-term antiviral therapy, such as adding or switching to (pegylated interferon), warrant further study,” they concluded.

 

Baruch S. Blumberg Institute