Pomalidomide + Cyclophosphamide + Dexamethasone

This is a three-drug combination regimen used primarily for treating relapsed/refractory multiple myeloma (RRMM). The combination is often referred to as PCd or POMCIDEX in clinical settings. ## Dosing and Administration The standard dosing regimen typically consists of: - **Pomalidomide**: 4 mg orally once daily on days 1-21 of a 28-day cycle - **Cyclophosphamide**: Various dosing schedules are used, including: - 400 mg orally on days 1, 8, and 15 of a 28-day cycle - 50 mg twice daily on days 1-21 of a 28-day cycle - 300 mg orally on days 1, 8, 15, and 22 - **Dexamethasone**: 40 mg orally on days 1, 8, 15, and 22 (reduced to 20 mg for patients over 75 years) ## Clinical Efficacy The combination has shown improved efficacy compared to pomalidomide + dexamethasone (Pd) alone: - Overall response rates (ORR) of 64.7-75.6% for PCd versus 38.9-41% for Pd - Progression-free survival (PFS) of 9.5-13.3 months for PCd versus 4.4-5 months for Pd - Particularly effective in patients who are refractory to lenalidomide and proteasome inhibitors ## Patient Population This regimen is primarily used in: - Relapsed/refractory multiple myeloma patients - Patients who have failed lenalidomide and proteasome inhibitor therapies - Elderly patients, including those classified as frail - The median age in studies ranges from 69-73 years ## Safety Profile The most common adverse events include: - Hematologic toxicities (primarily neutropenia) - Manageable with dose reductions - Special considerations for patients over 75 years (reduced dexamethasone dose) ## Practical Considerations - All-oral regimen, offering convenience for patients - Cost-effective treatment option - Patients require thromboprophylaxis (typically ASA 81 mg daily) - Pomalidomide is teratogenic and requires enrollment in risk management programs (Reddy2Assist or RevAid) This combination represents an important treatment option for heavily pretreated multiple myeloma patients, particularly those who have become refractory to standard therapies.

Brand names

POMCIDEX

Other names

pomalidomide-cyclophosphamide-dexamethasonecyclophosphamide-pomalidomide-dexamethasonePCd regimen