What is Belinostat: Uses, Dosage, Side Effects and More

Belinostat is a targeted cancer medication that helps treat certain types of blood cancers by blocking specific proteins that cancer cells need to grow. This intravenous drug belongs to a class called histone deacetylase inhibitors, which work by interfering with the cancer cell's ability to multiply and survive.

You'll receive this medication through an IV infusion at a cancer treatment center, where your healthcare team can monitor you closely. While belinostat is a powerful tool in fighting cancer, understanding how it works and what to expect can help you feel more prepared for your treatment journey.

What is Belinostat?

Belinostat is a prescription cancer medication that targets specific enzymes inside cancer cells to help stop their growth. The drug works by blocking histone deacetylases, which are proteins that help cancer cells survive and multiply uncontrollably.

This medication comes as a powder that gets mixed with sterile water and given through an IV line directly into your bloodstream. The FDA approved belinostat specifically for treating peripheral T-cell lymphoma, a rare but aggressive type of blood cancer that affects your immune system.

Your oncologist will determine if belinostat is right for your specific situation based on your cancer type, overall health, and how you've responded to other treatments.

What is Belinostat Used For?

Belinostat is primarily used to treat peripheral T-cell lymphoma (PTCL) in patients who have already tried at least one other treatment that didn't work well enough. PTCL is a group of aggressive blood cancers that develop when certain white blood cells called T-cells become cancerous.

Your doctor might recommend belinostat if your lymphoma has returned after remission or if it hasn't responded adequately to previous chemotherapy treatments. This medication is typically considered when other standard treatments haven't been successful.

Sometimes, doctors may use belinostat as part of research studies for other types of cancer, but its main approved use remains for this specific type of lymphoma.

How Does Belinostat Work?

Belinostat works by targeting enzymes called histone deacetylases (HDACs) that cancer cells rely on to stay alive and multiply. Think of these enzymes as molecular switches that cancer cells use to turn certain genes on and off.

When belinostat blocks these enzymes, it disrupts the cancer cell's ability to control its growth and survival mechanisms. This interference causes the cancer cells to stop dividing and eventually die, while generally causing less harm to healthy cells.

This medication is considered moderately strong, meaning it can be effective against aggressive cancers but may also cause significant side effects. Your healthcare team will carefully balance the benefits against potential risks based on your individual situation.

How Should I Take Belinostat?

You'll receive belinostat as an intravenous infusion over 30 minutes on days 1 through 5 of each 21-day treatment cycle. The medication must be given at a cancer treatment center where trained healthcare professionals can prepare and administer it safely.

Before each infusion, your healthcare team will check your blood counts and overall health to make sure your body is ready for treatment. You don't need to take belinostat with food since it goes directly into your bloodstream, but staying well-hydrated before and after treatment can help your body process the medication.

Your nurse will insert an IV line into your arm or access your port if you have one. During the infusion, you'll be monitored for any immediate reactions, and you can usually read, use electronic devices, or rest comfortably.

How Long Should I Take Belinostat For?

The length of belinostat treatment varies significantly from person to person, depending on how well your cancer responds and how your body tolerates the medication. Most people receive multiple cycles, with each cycle lasting 21 days.

Your oncologist will monitor your progress through regular blood tests, imaging scans, and physical examinations to determine whether the treatment is working effectively. If your cancer responds well and you're tolerating the medication reasonably, you might continue treatment for several months.

Treatment typically continues until your cancer stops responding to the medication, side effects become too severe to manage, or your cancer goes into remission. Your healthcare team will discuss these decisions with you throughout your treatment journey.

What Are the Side Effects of Belinostat?

Like most cancer medications, belinostat can cause side effects that range from mild to more serious. Understanding what to expect can help you prepare and know when to contact your healthcare team.

The most common side effects you might experience include fatigue, nausea, fever, and decreased appetite. Many people also develop low blood cell counts, which can increase your risk of infections, bleeding, or anemia.

Common Side Effects

These side effects occur in many people taking belinostat and are generally manageable with proper care and monitoring:

• Fatigue and weakness that may persist between treatment cycles
• Nausea and vomiting, which can usually be controlled with anti-nausea medications
• Fever and chills, particularly in the days following treatment
• Decreased appetite and changes in taste
• Diarrhea or constipation
• Shortness of breath during physical activity
• Headaches and dizziness
• Skin rash or itching

Your healthcare team will provide medications and strategies to help manage these symptoms and maintain your quality of life during treatment.

Serious Side Effects

While less common, some side effects require immediate medical attention and careful monitoring throughout your treatment:

• Severe drop in blood cell counts (neutropenia, thrombocytopenia, anemia)
• Serious infections due to weakened immune system
• Significant bleeding or bruising
• Liver problems, including elevated liver enzymes
• Heart rhythm abnormalities or other cardiac issues
• Severe allergic reactions during or after infusion
• Tumor lysis syndrome, where cancer cells break down too quickly

Your medical team will monitor for these complications through regular blood tests and examinations, and they'll adjust your treatment plan if needed.

Rare but Serious Side Effects

In very rare cases, belinostat may cause more severe complications that require immediate medical intervention:

• Severe liver damage or liver failure
• Life-threatening infections or sepsis
• Severe heart problems or heart failure
• Secondary cancers that may develop years later
• Severe skin reactions or tissue damage

While these complications are uncommon, your healthcare team will remain vigilant for early warning signs and take appropriate action if they occur.

Who Should Not Take Belinostat?

Belinostat isn't suitable for everyone, and your doctor will carefully evaluate whether this medication is safe for your specific situation. Certain health conditions or circumstances may make this treatment too risky.

You shouldn't receive belinostat if you have a known allergy to the medication or any of its components. Additionally, if you have severe liver disease, your doctor may avoid this treatment since belinostat can affect liver function.

People with severe heart problems, active serious infections, or extremely low blood cell counts may not be good candidates for belinostat treatment. Your oncologist will weigh these factors against the potential benefits of treatment.

Special Considerations

Certain groups of people require extra careful evaluation and monitoring if belinostat treatment is being considered:

• Pregnant or breastfeeding women (belinostat can harm developing babies)
• People with existing liver problems or hepatitis
• Patients with heart rhythm disorders or heart disease
• Those with kidney problems or reduced kidney function
• People taking blood thinners or who have bleeding disorders
• Patients with compromised immune systems from other causes

Your healthcare team will thoroughly review your medical history and current health status before recommending belinostat treatment.

Belinostat Brand Names

Belinostat is available under the brand name Beleodaq in the United States. This is the only commercially available formulation of belinostat currently approved by the FDA.

Beleodaq comes as a lyophilized powder that healthcare professionals reconstitute with sterile water before administration. The medication is manufactured by Acrotech Biopharma and is only available through specialty pharmacies and cancer treatment centers.

You won't find generic versions of belinostat yet, as the medication is still under patent protection. This means Beleodaq is currently the only option available for belinostat treatment.

Belinostat Alternatives

If belinostat isn't suitable for you or stops working effectively, your oncologist has several other treatment options for peripheral T-cell lymphoma. These alternatives work through different mechanisms and may be better suited to your specific situation.

Other HDAC inhibitors like romidepsin (Istodax) work similarly to belinostat and might be considered if you can't tolerate belinostat. Additionally, newer targeted therapies and immunotherapy options are becoming available for T-cell lymphomas.

Traditional chemotherapy combinations, stem cell transplant, or participation in clinical trials for experimental treatments might also be options depending on your overall health and treatment history.

Is Belinostat Better Than Romidepsin?

Both belinostat and romidepsin are HDAC inhibitors used to treat peripheral T-cell lymphoma, but they aren't necessarily better or worse than each other. Each medication has its own benefits and side effect profile that may make one more suitable for your specific situation.

Belinostat is given as a shorter infusion over 30 minutes for five consecutive days, while romidepsin requires longer infusions on specific days of the cycle. Some people tolerate one medication better than the other in terms of side effects.

Your oncologist will consider factors like your overall health, previous treatments, potential drug interactions, and personal preferences when choosing between these options. The "better" choice depends entirely on your individual circumstances.