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Pomalidomide, cyclophosphamide, and dexamethasone for elderly patients with relapsed and refractory multiple myeloma: A study of the Korean Multiple Myeloma Working Party (KMMWP-164 study).


ABSTRACT: Patients with transplant-ineligible relapsed and refractory multiple myeloma (RRMM) have a short life expectancy, especially when they have failed both the proteasome inhibitor and immunomodulator therapies. This study aimed to assess the efficacy and safety of pomalidomide, cyclophosphamide, and dexamethasone (PCd) in elderly patients with RRMM. This phase 2 clinical trial recruited 55 elderly patients with RRMM. The patients underwent a 28-day treatment cycle: pomalidomide (4 mg/day on days 1-21, administered orally) and cyclophosphamide (400 mg/day on days 1, 8, and 15; administered orally) plus dexamethasone. The median (range) age of the patients was 73.3 (64-86) years, and 8 (14.5%) patients who were ≥ 80 years old. Eight (14.5%) and 31 (56.4%) patients exhibited stage III (revised international staging system) and frail status (simplified frailty scale), respectively. The overall response rate (ORR) and clinical benefit rate (CBR) of PCd therapy were 58.2% and 72.7%, respectively. The median PFS and median overall survival (OS) were 6.90 months (95% CI, 4.7-9.0) and 18.48 months (95% CI, 9.4-27.6), respectively. The incidence rate of grade ≥ 3 non-hematological toxicities was 70.8%. In particular, the incidence rate of primary infection was 45.4%, including 21.8% for pneumonia, 9.0% for sepsis, and 14.6% for febrile neutropenia. In conclusion, PCd is an effective regimen for elderly patients with RRMM who had failed both bortezomib and lenalidomide treatments, but in whom the treatment-associated infection is the main cause of morbidity and mortality.

SUBMITTER: Lee HS 

PROVIDER: S-EPMC7983889 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Pomalidomide, cyclophosphamide, and dexamethasone for elderly patients with relapsed and refractory multiple myeloma: A study of the Korean Multiple Myeloma Working Party (KMMWP-164 study).

Lee Ho Sup HS   Kim Kihyun K   Kim Seok Jin SJ   Lee Je-Jung JJ   Kim Inho I   Kim Jin Seok JS   Eom Hyeon-Seok HS   Yoon Dok Hyun DH   Suh Cheolwon C   Shin Ho-Jin HJ   Mun Yeung-Chul YC   Kim Min Kyoung MK   Lim Sung-Nam SN   Choi Chul Won CW   Kang Hye Jin HJ   Yoon Sung-Soo SS   Min Chang-Ki CK  

American journal of hematology 20200124 4


Patients with transplant-ineligible relapsed and refractory multiple myeloma (RRMM) have a short life expectancy, especially when they have failed both the proteasome inhibitor and immunomodulator therapies. This study aimed to assess the efficacy and safety of pomalidomide, cyclophosphamide, and dexamethasone (PCd) in elderly patients with RRMM. This phase 2 clinical trial recruited 55 elderly patients with RRMM. The patients underwent a 28-day treatment cycle: pomalidomide (4 mg/day on days 1-  ...[more]

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