Conditions: Relapse Multiple Myeloma Refractory Multiple Myeloma
Keywords: Relapsed Multiple Myeloma Refractory Multiple Myeloma High-Dose Carfilzomib Standard Dose Carfilzomib Carfilzomib
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 13
Healthy volunteers: no

Brief summary:
The purpose of this study is to determine the safety and activity of the investigational drug known as carfilzomib in the treatment of multiple myeloma (MM) when it is given at doses above the usual dose after the standard dosing has become ineffective. The other purpose of this study is to understand what causes the multiple myeloma to become resistant to carfilzomib and whether this can be overcome in the laboratory.

Detailed description:
This is an open label, single center, phase II study of high dose carfilzomib. Patients with relapsed or relapsed/refractory myeloma and with progression of disease on standard dosing (20/27 mg/m2) and schedule of carfilzomib will be initially treated at dose level 1, carfilzomib 20/56 mg/m2. During Cycle 1, patients will receive either 20 mg/m2 on days 1,2 (if the subject has not received carfilzomib as part another clinical trial within the last 4 weeks) or 56 mg/m2 (if the subject is enrolling in the present study after progression of disease on carfilzomib within the last month - for example subjects enrolled in CMAP compassionate use carfilzomib). Thereafter, all subjects will receive 56 mg/m2 for the remaining doses given Cycle 1 Day 8 onwards. If a minimal response or better is achieved (and therefore disease response is recaptured) a bone marrow biopsy will be repeated.

If 56 mg/m2 is not tolerated, the dose of carfilzomib will be reduced to dose level -1 i.e. 45 mg/m2. If a subject does not tolerate 45 mg/m2 then the dose would be further reduced to dose level -2 i.e. 36 mg/m2. If the subject does not tolerate 36 mg/m2, then this subject would have to come off study.

Dexamethasone 8 mg po/IV will be administered prior to all carfilzomib doses.

Once a patient develops disease progression on this study, the patient may return to receiving the maximum tolerated dose of carfilzomib by that patient with the addition of a therapeutic dosing of dexamethasone (a total of 20-40 mg weekly). An IMId (e.g. thalidomide or lenalidomide) and/or an alkylator can also be added to carfilzomib 27 or 36 mg/m2 per investigator discretion either concurrent with the addition of dexamethasone or subsequent to disease progression on carfilzomib with concurrent therapeutic dexamethasone.

Arms:
arm 1: All patients will receive Carfilzomib

Interventions: intervention 1: Carfilzomib
Intervention descriptions: intervention 1: During Cycle 1, patients will receive either 20 mg/m2 on days 1,2 (if the subject has not received carfilzomib as part another clinical trial within the last 4 weeks) or 56 mg/m2 (if the subject is enrolling in the present study after progression of disease on carfilzomib within the last month - for example subjects enrolled in CMAP compassionate use carfilzomib). Thereafter, all subjects will receive 56 mg/m2 for the remaining doses given Cycle 1 Day 8 onwards. Each cycle is 28 days.

Protocol document: