Abstract |
Pomalidomide at doses of 2 or 4 mg/d has demonstrated excellent activity in patients with multiple myeloma (MM). We opened 2 sequential phase 2 trials using the pomalidomide with weekly dexamethasone (Pom/dex) regimen at differing doses to study the efficacy of this regimen in patients who have failed both lenalidomide and bortezomib. Pomalidomide was given orally 2 or 4 mg daily with dexamethasone 40 mg weekly. Thirty-five patients were enrolled in each cohort. Confirmed responses in the 2-mg cohort consisted of very good partial response (VGPR) in 5 (14%), partial response (PR) in 4 (11%), minor response (MR) in 8 (23%) for an overall response rate of 49%. In the 4-mg cohort, confirmed responses consisted of complete response (CR) in 1 (3%), VGPR in 3 (9%), PR in 6 (17%), MR in 5 (14%) for an overall response rate of 43%. Overall survival at 6 months is 78% and 67% in the 2- and 4-mg cohort, respectively. Myelosuppression was the most common toxicity. This nonrandomized data suggests no advantage for 4 mg over the 2 mg daily. Pomalidomide overcomes resistance in myeloma refractory to both lenalidomide and bortezomib. This trial is registered at http://ClinicalTrials.gov, number NCT00558896.
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Authors | Martha Q Lacy, Jacob B Allred, Morie A Gertz, Suzanne R Hayman, Kristen Detweiler Short, Francis Buadi, Angela Dispenzieri, Shaji Kumar, Philip R Greipp, John A Lust, Stephen J Russell, David Dingli, Steven Zeldenrust, Rafael Fonseca, P Leif Bergsagel, Vivek Roy, A Keith Stewart, Kristina Laumann, Sumithra J Mandrekar, Craig Reeder, S Vincent Rajkumar, Joseph R Mikhael |
Journal | Blood
(Blood)
Vol. 118
Issue 11
Pg. 2970-5
(Sep 15 2011)
ISSN: 1528-0020 [Electronic] United States |
PMID | 21690557
(Publication Type: Clinical Trial, Phase II, Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Boronic Acids
- Pyrazines
- Thalidomide
- Bortezomib
- Dexamethasone
- pomalidomide
- Lenalidomide
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Topics |
- Administration, Oral
- Adult
- Aged
- Antineoplastic Combined Chemotherapy Protocols
(administration & dosage, adverse effects)
- Boronic Acids
(therapeutic use)
- Bortezomib
- Dexamethasone
(administration & dosage, adverse effects)
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Drug Resistance, Neoplasm
(drug effects)
- Female
- Humans
- Lenalidomide
- Male
- Middle Aged
- Multiple Myeloma
(drug therapy, mortality)
- Pyrazines
(therapeutic use)
- Survival Analysis
- Thalidomide
(administration & dosage, adverse effects, analogs & derivatives, therapeutic use)
- Treatment Failure
- Treatment Outcome
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