Cablivi (caplacizumab or caplacizumab-yhdp) is the first medication available for the treatment of acquired thrombotic thrombocytopenic purpura (aTTP) in adults. In order for it to work, it must be taken in combination with plasma exchange and immunosuppressants (medications that lower your immune system). After a starting dose that's given through your veins by a healthcare provider, Cablivi (caplacizumab) is injected under the skin daily. Treatment typically lasts a little over 1 to 2 months. Some common side effects include bloody nose, headache, and bleeding gums.
Cablivi (caplacizumab) treats aTTP by sticking to von Willebrand factor (vWF) in your blood. This prevents your platelets from clumping together to form clots and also keeps your platelet level in the rest of your body from dropping too low.
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):
Normally, when you get an injury and start to bleed, your body releases a protein called von Willebrand factor (vWF). This protein sticks to platelets in your blood and causes them to clump up and form clots to stop your bleeding. After your injury is healed, your body releases another protein called ADAMTS13. This protein chops up vWF so that platelets don't clump together to form clots anymore. In people with acquired thrombotic thrombocytopenic purpura (aTTP), ADAMTS13 doesn't work properly. As a result, you have a lot of vWF in your body, which causes your platelets to form clots even if you don't need them to. When a lot of platelets gather together and clot in certain areas of your body, it means the platelet level in the rest of your body is low and this can lead to bleeds. So people with aTTP are at higher risk for both blood clot-related complications and bleeds.
Only your first dose of Cablivi (caplacizumab) is given IV by a healthcare provider. After that, Cablivi (caplacizumab) can be given by a provider, yourself, or your caregiver and only as an injection under the skin in your stomach. To lower the risk of bruising and irritation, rotate between different injection sites on your stomach so that the same site isn't used repeatedly. Make sure to inject at least 2 inches away from your belly button.
Treatment with Cablivi (caplacizumab) can last a little over 1 to 2 months. It starts when you begin your plasma exchange and you'll get daily Cablivi (caplacizumab) injections after each plasma exchange. After your final plasma exchange session, you'll continue to inject Cablivi (caplacizumab) daily for about a month. Depending on how you respond to the medication, your provider might extend your Cablivi (caplacizumab) treatment by up to another month. If you get 2 episodes of aTTP while taking Cablivi (caplacizumab), you'll have to stop taking the medication. Talk with your provider if you're not sure how long you need to take Cablivi (caplacizumab).
If you miss a dose of Cablivi (caplacizumab) during the period when you're also receiving plasma exchange, take it as soon as you remember. If you miss a dose of Cablivi (caplacizumab) after you're no longer receiving plasma exchange, take the dose as long as it's within 12 hours of when you're supposed to take it. If it has been longer than 12 hours, skip the dose and continue the next dose at the usual time the following day.
Cablivi (caplacizumab) hasn't been studied in pregnancy, so it's not known whether this medication is safe or works well in pregnant females. It's possible that this medication raises the risk of serious bleeds for both mother and child. If you're pregnant or thinking of becoming pregnant, talk with your provider about the risks and benefits of using Cablivi (caplacizumab) during pregnancy.
Cablivi (caplacizumab) 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.
Cablivi (caplacizumab) can put you at risk for serious bleeds, especially if you have bleeding problems or if you're taking medications that raise your risk for bleeding (e.g., antiplatelets and anticoagulants). Make sure to tell your provider about all the medications you're taking before starting Cablivi (caplacizumab). Don't start any new medications while taking Cablivi (caplacizumab) without talking to your provider first.
Let your provider know ahead of time if you're planning to receive any surgery, procedure, or dental work. Your provider might have you stop Cablivi (caplacizumab) about 1 week before these procedures to lower your risk for bleeds. If you're getting an emergency surgery, let your provider know you're taking Cablivi (caplacizumab) because you might need to receive additional medications ahead of time to prevent bleeds. If you have any signs of severe bleeding (e.g., fast heart rate, dizziness, light-headedness, pale skin, blood in urine or stool, vomiting or couging up blood) or having difficulty stopping a bleed, get medical help right away.
You typically start treatment of Cablivi (caplacizumab) when you start your plasma exchange. Your first dose of Cablivi (caplacizumab) is injected into the veins by a healthcare provider. After this, your doses of Cablivi (caplacizumab) can be injected under the skin by a provider, yourself, or your caregiver.