Opdualag is a pre-mixed combination of two medications: nivolumab and relatlimab (or relatlimab-rmbw). Both are immunotherapy medications that work to treat advanced and metastatic melanoma skin cancer by activating your immune system to fight cancer cells. Opdualag (nivolumab / relatlimab) is given through the vein (IV, intravenously) at a doctor’s office or infusion center, typically once every 4 weeks. Possible side effects of this medication include rash, diarrhea, and muscle pain.
Our immune system plays an important role in our body, for example, to fight infections. The immune system can also attack and kill cancer cells it recognizes as abnormal. Some cancer cells can hide from the immune system by using the programmed-death-1 (PD-1) or the lymphocyte activation gene-3 (LAG3) pathway. When a cancer cell uses one or both of these pathways, it stops our immune cells from attacking the cancer cell. This allows cancer to grow.
Opdualag (nivolumab / relatlimab) is a combination medication that blocks both the PD-1 (nivolumab) and LAG3 (relatlimab) pathways. When these pathways are blocked, the immune system is activated to attack cancer cells. As a result, the immune system can kill cancer cells and stop cancer cells from growing.
The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Contact your healthcare provider immediately if you experience any of the following.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
Opdualag (nivolumab / relatlimab) isn’t considered traditional chemotherapy. Chemotherapy medications typically work by directly attacking rapidly growing cancer cells. Instead, Opdualag (nivolumab / relatlimab) is an immunotherapy medication that works by activating your immune system to attack the cancer cells. Ask your provider if you’re unsure about which type of cancer treatment is best for you.
A single dose of Opdualag (nivolumab / relatlimab) includes two medications, nivolumab and relatlimab, combined together in the same treatment. Both nivolumab and relatlimab are immunotherapy medications that activate your immune system, but they do this in different ways. By activating your immune system through two different pathways, Opdualag (nivolumab / relatlimab) works to kill cancer cells and stop them from growing. Sometimes, two medications need to be given separately, but Opdualag (nivolumab / relatlimab) can be given together as one single infusion.
Opdualag (nivolumab / relatlimab) doesn’t cause the same side effects typically seen with chemotherapy. Because Opdualag (nivolumab / relatlimab) works by activating your immune system, side effects are usually called immune-related adverse events, or irAEs. These happen when the immune system becomes too active during treatment and attacks healthy cells in addition to cancer cells. The most common reactions happen in the skin (i.e., rash), in the gut (i.e., diarrhea), and lungs (i.e., trouble breathing). If you experience any of these side effects during treatment with Opdualag (nivolumab / relatlimab) let your provider know right away so they can help you manage them.
It depends on what type of immune-related side effect you have. Sometimes, you can keep taking Opdualag (nivolumab / relatlimab) while your provider treats the side effect, for example if you have thyroid changes. But it’s more common that you’ll need to take a break from Opdualag (nivolumab / relatlimab) while your provider manages your side effects. Your provider will most likely prescribe a corticosteroid, like prednisone, to calm your immune system down. If your symptoms gets better, your provider might ask you to restart Opdualag (nivolumab / relatlimab) again. But if your side effects are severe, your provider might ask you to permanently stop taking Opdualag (nivolumab / relatlimab).
Opdualag (nivolumab / relatlimab) does not typically cause nausea. If nausea does occur, it’s usually mild. Vomiting has not been commonly reported by people taking Opdualag (nivolumab / relatlimab) in clinical studies. If you do have nausea while taking Opdualag (nivolumab / relatlimab), talk to your provider. There are several lifestyle changes they might recommend, such as eating smaller meals and avoiding certain foods. Your provider might also recommend a medication to help manage it, such as ondansetron (Zofran) or prochlorperazine (Compazine).
How long you take Opdualag (nivolumab / relatlimab) depends on several factors, such as how well the medication is working for you and if you’re having any side effects. Your provider will monitor how well Opdualag (nivolumab / relatlimab) is working for you based on your skin lesions, scan results, and your cancer symptoms. If you do experience immune-related side effects, you might have to pause or stop taking Opdualag (nivolumab / relatlimab). It’s important to follow up with your provider regularly to track your progress with Opdualag (nivolumab / relatlimab) treatment. In general, people with melanoma take Opdualag (nivolumab / relatlimab) as long as it’s working to treat their cancer and they’re not having any serious side effects.
Opdualag (nivolumab / relatlimab) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Side effects from immunotherapy are typically called immune-related adverse events (irAEs). They happen when the immune system becomes too active and doesn’t just attack cancer cells; it attacks healthy cells, too. These side effects can happen anywhere in your body. They can be mild or very serious. And, they can happen at any time during treatment. Some of these side effects, like changes in lab values that show how well your liver and kidneys are working, might not cause noticeable symptoms. You’ll need blood tests done often so your provider can monitor for those side effects closely. But you might notice certain other immune-related side effects, like diarrhea, skin rash, or shortness of breath. Call your provider right away if you experience any of these symptoms. You might need to pause or stop Opdualag (nivolumab / relatlimab) and take a corticosteroid depending on how severe your symptoms are.
Rarely, people taking Opdualag (nivolumab / relatlimab) have experienced severe reactions during their infusion. If you feel itchy or warm, have trouble breathing, feel nauseous, or suddenly have a fast heart rate while receiving Opdualag (nivolumab / relatlimab), let your nurse know right away. Most of the time, giving the infusion slower can help. But sometimes, having a serious reaction means that you shouldn’t take Opdualag (nivolumab / relatlimab) again to avoid having another one in the future.
Risk factors: People who’ve received a stem cell (bone marrow) transplant
Some people who’ve taken immunotherapy medications like Opdualag (nivolumab / relatlimab) and who’ve also had a stem cell transplant have experienced serious problems like graft-versus-host-disease. If you’ve taken an immunotherapy medication like Opdualag (nivolumab / relatlimab) and have also had a stem cell transplant, your provider will follow up with you closely for signs and symptoms of these problems, such as nausea, vomiting, stomach pain, and rash.
Risk factors: Pregnancy
Opdualag (nivolumab / relatlimab) might harm an unborn baby or raise the risk for miscarriage (pregnancy loss) when taken during pregnancy. Because of these risks, if you’re a female who can get pregnant, you should use birth control while taking Opdualag (nivolumab / relatlimab) and for 5 months after the last dose. Let your provider know right away if you become pregnant while taking Opdualag (nivolumab / relatlimab).
People ages 12 years and older (who weigh at least 40 kg):