Pomalidomide

Uses	Multiple Myeloma
Therapy	Anti-Neoplastic
Side Effects	Low Blood Counts, Tiredness, Infections, Constipation

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Molecule Description

Pomalidomide contains pomalidomide, a prescription oral anticancer medicine that belongs to a group called immunomodulatory drugs (IMiDs). It is mainly used with dexamethasone to treat adults with multiple myeloma that has returned or stopped responding to treatment after at least two previous therapies, including lenalidomide and bortezomib. Pomalidomide works in several ways. It binds to a protein called cereblon, which helps break down certain proteins involved in cancer-cell growth. It also helps strengthen the immune system's T-cell and natural killer (NK) cell activity against myeloma cells and may reduce the formation of new blood vessels that support tumour growth. Treatment requires close medical supervision and regular blood tests, as pomalidomide can cause low blood cell counts, particularly neutropenia and thrombocytopenia, and can increase the risk of blood clots. Pomalidomide can cause severe birth defects and must not be used during pregnancy. Strict pregnancy-prevention measures are required for patients who can become pregnant, and appropriate contraception is also required for male patients according to the applicable pregnancy-prevention programme.

Uses

Treatment of relapsed and refractory multiple myeloma in adult patients who have received at least two prior treatment regimens, including both lenalidomide and bortezomib, and have demonstrated disease progression on the last therapy.

Contraindications

When should one not use Pomalidomide

During pregnancy, pomalidomide can cause serious birth defects or harm to the developing baby.
If you are a male patient who is unwilling or unable to follow the required contraceptive precautions.
If you have a severe allergy or hypersensitivity to pomalidomide or any of its ingredients.
Safety note: Women who can become pregnant must follow the pregnancy-prevention requirements and undergo pregnancy testing as advised by their doctor before and during treatment.

Side effects

Common side effects of this drug are:

Bone marrow suppression leading to neutropenia (low white blood cell counts, increasing infection risk), anemia, and thrombocytopenia (low platelets)
Fatigue, asthenia (weakness), and pyrexia (fever)
Constipation, diarrhea, nausea, and decreased appetite
Peripheral edema (swelling in the hands, ankles, or feet)
Upper respiratory tract infections and cough
Muscle spasms and back pain
Dizziness, tremor, and peripheral neuropathy (numbness or tingling)
Shortness of breath (dyspnea)
Rash and dry skin
Insomnia and confusion
Severe teratogenicity (life-threatening birth defects or fetal death)
Deep Vein Thrombosis (DVT) and Pulmonary Embolism (blood clots)
Severe, life-threatening neutropenic fever and serious infections (such as pneumonia or sepsis)
Severe cutaneous reactions (such as Stevens-Johnson syndrome)
Hepatotoxicity (liver enzyme elevations or liver injury)
Tumor lysis syndrome

Precautions and Warnings

Pregnancy

No. Pomalidomide can cause severe birth defects and must not be used during pregnancy. Women who can become pregnant must use effective contraception and regular pregnancy testing as required by the pregnancy-prevention programme.Male patients should use effective contraception during treatment for the period advised by their doctor.

Breast Feeding

Breastfeeding is not recommended during treatment with Pomalidomide. It is not known whether pomalidomide passes into breast milk and but it may cause serious harm to the nursing baby. Discuss breastfeeding options with your doctor.

Driving

Use caution. Pomalidomide can cause side effects such as fatigue, dizziness, and confusion that may impair your alertness. Avoid driving or operating machinery if you feel unwell.

Alcohol

Alcohol may worsen fatigue or dizziness. Discuss alcohol use with your doctor during treatment.

Other General Warnings

Talk to your doctor if

You develop a fever, chills, or signs of an infection while your blood counts are low.
You notice sudden swelling, pain, or redness in your arms or legs, or experience chest pain (signs of blood clots).
You experience severe skin rashes, blistering, or peeling.
You notice yellowing of the skin or eyes, dark urine, or upper abdominal pain (signs of liver issues).
Strictly adhere to your mandatory pregnancy prevention program and contraceptive requirements if you are a patient of childbearing potential.
Keep all scheduled blood test appointments so your doctor can monitor your white blood cell counts and platelet levels before every cycle.
Report any fever, chills, sore throat, or signs of infection to your medical team immediately.
Watch for warning signs of blood clots, such as sudden pain, swelling, or redness in your leg, or sudden shortness of breath and chest pain.

Mode of Action

How Does It Work?

Pomalidomide is an immunomodulatory medicine that works in several ways to fight multiple myeloma. It binds to a protein called cereblon, which helps break down certain proteins that myeloma cells need to survive. This can cause myeloma cells to stop growing and die. Pomalidomide also strengthens the immune response by activating T cells and natural killer (NK) cells and may reduce the formation of new blood vessels that help tumours grow.

Interactions

Interactions with other medicines

Ciprofloxacin and fluvoxamine: These may increase pomalidomide levels and the risk of side effects. They should generally be avoided; if necessary, your doctor may reduce the pomalidomide dose.
Carbamazepine: This may lower pomalidomide levels and could reduce its effectiveness.
Dexamethasone: It is commonly used with pomalidomide and does not significantly affect pomalidomide levels.
Tell your doctor about all prescription and over-the-counter medicines, vitamins, supplements, and herbal products you take before starting treatment.

Interactions with food items

You can take the medidine with or without food, depending on your daily schedule. Maintain a well-balanced, high-fiber diet and stay thoroughly hydrated to help manage constipation and fatigue.

Dosage

Overdose

If an overdose is suspected, emergency medical intervention must be initiated immediately in a hospital setting. Management involves supportive hospital care, vital sign monitoring, and symptomatic treatment.

Missed a Dose

If you miss a dose of Pomalidomide and it has been less than 12 hours since your scheduled time, take it as soon as you remember. If it has been more than 12 hours, skip the missed dose and take your next dose at the normal time the following day. Never take a double dose to make up for a missed dose.

Frequently Asked Questions (FAQs)

Pomalidomide can cause severe birth defects or fetal death. Strict contraception and regular pregnancy testing are therefore required to prevent accidental exposure to a preganant female during treatment.

Pomalidomide frequently causes bone marrow suppression, leading to temporary drops in your white blood cells (neutropenia), platelets, and red blood cells. Regular blood tests ensure your counts are safe before you start each new treatment cycle.

Pomalidomide, especially when used with dexamethasone, can increase the risk of blood clots. Your doctor will assess your risk and may prescribe aspirin or another blood-thinning medicine to help prevent clots if appropriate.

No. You must swallow the capsules whole without opening, breaking, or chewing them. If a capsule breaks, do not inhale the powder or allow it to contact your skin. Caregivers should handle packaging with appropriate safety measures.