Conditions: Multiple Myeloma
Allocation: NA | Intervention model: SEQUENTIAL
Enrollment: 116
Healthy volunteers: no

Brief summary:
The study had the following primary objectives:

* Phase 1: to determine the maximum tolerated dose (MTD) of once-weekly (QW) carfilzomib and dexamethasone for patients with relapsed or refractory multiple myeloma who have received 1 to 3 prior therapies
* Phase 2: to estimate the overall response rate (ORR) for patients with relapsed or refractory multiple myeloma who received 1 to 3 prior therapies treated with carfilzomib and dexamethasone QW at the MTD established in phase 1.

Detailed description:
This is a Phase 1/2, multicenter, single-arm, nonrandomized, open-label and dose-escalation study of weekly carfilzomib and dexamethasone for patients with progressive multiple myeloma. The Phase 1 dose escalation portion will enroll patients into sequential dose-escalating cohorts consisting of 3 patients each to establish the maximum tolerated dose (MTD) of carfilzomib administered weekly as a 30 minute intravenous (IV) infusion with dexamethasone. The Phase 2 portion will enroll patients using the MTD established for carfilzomib from the Phase 1 portion of the study. Dexamethasone will be administered IV or orally at the same dose and schedule as used in the Phase 1 portion of the study.

Arms:
arm 1: In phase 1 participants were assigned to one of four sequential dose-escalating cohorts to receive 45, 56, 70 or 88 mg/m² carfilzomib administered by intravenous (IV) infusion on days 1, 8 and 15 of each 28-day cycle. Participants also received 40 mg dexamethasone IV or orally on days 1, 8, 15 and 22 for the first 8 cycles; starting with cycle 9, dexamethasone was administered only on days 1, 8, and 15.

In phase 2 participants received carfilzomib at the maximum tolerated dose (MTD) established in the Phase 1 portion of the study on days 1, 8 and 15 plus 40 mg dexamethasone IV or orally at the same schedule as used in the Phase 1 portion of the study.

Participants were treated until confirmed progressive disease, unacceptable toxicity, withdrew consent for further treatment, were lost to follow-up, died, or the sponsor closed the study.

Interventions: intervention 1: Carfilzomib intervention 2: Dexamethasone
Intervention descriptions: intervention 1: Carfilzomib was administered as a 30-minute IV infusion on days 1, 8, and 15 of each 28-day treatment cycle. intervention 2: Dexamethasone was administered at a dose of 40 mg IV or orally (PO) on days 1, 8, 15, and 22 for the first 8 cycles; starting with cycle 9 dexamethasone was administered on days 1, 8, and 15.

Protocol document: