Description and Brand Names

Drug information provided by: IBM Micromedex


Luspatercept-aamt injection is used to treat anemia in patients with beta thalassemia who need regular red blood cell (RBC) transfusions.

Luspatercept-aamt injection is also used to treat anemia in patients with myelodysplastic syndromes with ring sideroblasts (MDS-RS) or myelodysplastic/myeloproliferative neoplasms with ring sideroblasts and thrombocytosis (MDS/MPN-RS-T) who need regular red blood cell (RBC) transfusions. This medicine is given to patients who cannot receive erythropoiesis stimulating agent (ESA) or has received ESA but did not work well.

This medicine is to be given only by or under the immediate supervision of your doctor.

Before Using

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:


Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Appropriate studies have not been performed on the relationship of age to the effects of luspatercept-aamt injection in the pediatric population. Use in children is not recommended.


Appropriate studies have not been performed on the relationship of age to the effects of luspatercept-aamt injection in the geriatric population.


There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Blood clots, history of or
  • Hypertension (high blood pressure)—Use with caution. May make these conditions worse.
  • Smoking or
  • Splenectomy (surgery to remove the spleen), history of—May increase risk for more serious side effects.

Proper Use

A doctor or other trained health professional will give you this medicine in a hospital. It is given as a shot under your skin once every 3 weeks.

Missed Dose

Call your doctor or pharmacist for instructions.


It is very important that your doctor check your progress closely at regular visits to see if the medicine is working properly. Blood tests may be needed to check for any unwanted effects.

Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant during treatment with this medicine and for at least 3 months after the last dose. If you think you have become pregnant while using this medicine, tell your doctor right away.

This medicine may increase your risk of having blood clots (eg, deep vein thrombosis, ischemic strokes, portal vein thrombosis, pulmonary embolus). Check with your doctor right away if you have pain in the chest, groin, or legs, especially the calves, trouble breathing, severe, sudden headache, slurred speech, sudden loss of coordination, sudden, severe weakness or numbness in arm or leg, or vision changes.

Call your doctor right away if you have blurred vision, dizziness, nervousness, headache, pounding in the ears, or slow or fast heartbeat. These may be symptoms of high blood pressure.

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

More common

  1. Blurred vision
  2. bone pain
  3. dizziness
  4. headache
  5. nervousness
  6. pounding in the ears
  7. slow or fast heartbeat

Less common

  1. Chest pain or tightness
  2. fever
  3. hives, itching, or skin rash
  4. hoarseness
  5. inability to speak
  6. irritation
  7. joint pain, stiffness, or swelling
  8. lightheadedness or fainting
  9. pain, redness, or swelling in the arm or leg
  10. redness of the skin
  11. seizures
  12. severe or sudden headache
  13. slurred speech
  14. swelling of the eyelids, face, lips, hands, or feet
  15. temporary blindness
  16. troubled breathing or swallowing
  17. weakness in the arm or leg on one side of the body, sudden and severe

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

  1. Body aches or pain
  2. chills
  3. cough
  4. diarrhea
  5. difficulty in moving
  6. ear congestion
  7. general feeling of discomfort or illness
  8. loss of appetite
  9. loss of voice
  10. lower back, side, or stomach pain
  11. muscle pain or stiffness
  12. nausea or vomiting
  13. runny or stuffy nose
  14. shivering
  15. sneezing
  16. sore throat
  17. stomach pain
  18. sweating
  19. trouble sleeping
  20. unusual tiredness or weakness

Less common

  1. Bleeding, blistering, burning, coldness, discoloration of skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
  2. feeling of constant movement of self or surroundings
  3. sensation of spinning

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.