Open AccessRandomized, placebo‐controlled, phase 3 study of perifosine combined with bortezomib and dexamethasone in patients with relapsed, refractory multiple myeloma previously treated with bortezomib
Author(s) -
Richardson Paul G.,
Nagler Ar,
BenYehuda Dina,
Badros Ashraf,
Hari Parameswaran N.,
Hajek Roman,
Spicka Ivan,
Kaya Hakan,
LeBlanc Richard,
Yoon SungSoo,
Kim Kihyun,
MartinezLopez Joaquin,
Mittelman Moshe,
Shpilberg Ofer,
Blake Paul,
Hideshima Teru,
Colson Kathleen,
Laubach Jacob P.,
Ghobrial Irene M.,
Leiba Merav,
Gatt Moshe E.,
Sportelli Peter,
Chen Michael,
Anderson Kenneth C.
Publication year - 2020
Publication title -
ejhaem
Language(s) - English
Resource type - Journals
ISSN - 2688-6146
DOI - 10.1002/jha2.4
Subject(s) - bortezomib , medicine , dexamethasone , clinical endpoint , multiple myeloma , placebo , hazard ratio , interim analysis , adverse effect , surgery , gastroenterology , oncology , randomized controlled trial , confidence interval , pathology , alternative medicine
Perifosine, an investigational, oral, synthetic alkylphospholipid, inhibits signal transduction pathways of relevance in multiple myeloma (MM) including PI3K/Akt. Perifosine demonstrated anti‐MM activity in preclinical studies and encouraging early‐phase clinical activity in combination with bortezomib. A randomized, double‐blind, placebo‐controlled phase 3 study was conducted to evaluate addition of perifosine to bortezomib‐dexamethasone in MM patients with one to four prior therapies who had relapsed following previous bortezomib‐based therapy. The primary endpoint was progression‐free survival (PFS). The study was discontinued at planned interim analysis, with 135 patients enrolled. Median PFS was 22.7 weeks (95% confidence interval 16·0–45·4) in the perifosine arm and 39.0 weeks (18.3–50.1) in the placebo arm (hazard ratio 1.269 [0.817–1.969]; P = .287); overall response rates were 20% and 27%, respectively. Conversely, median overall survival (OS) was 141.9 weeks and 83.3 weeks (hazard ratio 0.734 [0.380–1.419]; P = .356). Overall, 61% and 55% of patients in the perifosine and placebo arms reported grade 3/4 adverse events, including thrombocytopenia (26% vs 14%), anemia (7% vs 8%), hyponatremia (6% vs 8%), and pneumonia (9% vs 3%). These findings demonstrate no PFS benefit from the addition of perifosine to bortezomib‐dexamethasone in this study of relapsed/refractory MM, but comparable safety and OS.