All-trans Retinoic Acid in Combination With a KPD Regimen for the Treatment of Refractory/Relapsed Multiple Myeloma

"Regimen: 1 course of treatment for 28 days until disease progression or intolerable toxicity occurs~1. ATRA mg/m2/day in 2 oral doses for 3 days. The first dose of ATRA will be given in the morning, two days prior to carfilzomib administration.~ The last ATRA dose will be given in the evening on the day of carfilzomib administration.~2. Proteasome inhibitor: Carfilzomib 27mg/m2 2 consecutive days per week x 3 weeks (20mg/m2 on day 1 and day 2 of cycle 1);~3. Pomalidomide 4mg orally daily, d1-21;~4. Dexamethasone given orally only on days 1, 8, 15, and 22 of each cycle; ≤75 years: 40 mg/day; \>75 years: 20 mg/day."