Faculty Collaboration Database

Randomized Phase II Study of Azacitidine Alone or in Combination With Lenalidomide or With Vorinostat in Higher-Risk Myelodysplastic Syndromes and Chronic Myelomonocytic Leukemia: North American Intergroup Study SWOG S1117. J Clin Oncol 2017 Aug 20;35(24):2745-2753

Date

05/10/2017

Pubmed ID

28486043

Pubmed Central ID

PMC5562170

DOI

10.1200/JCO.2015.66.2510

Scopus ID

2-s2.0-85028505702 (requires institutional sign-in at Scopus site)   216 Citations

Abstract

Purpose Azacitidine is standard, first-line therapy in higher-risk myelodysplastic syndromes (MDS). Whether azacitidine-based combinations with lenalidomide or vorinostat produce superior overall response rates (ORRs) to azacitidine is not known. Patients and Methods North American Intergroup Study S1117 is a phase II/III trial that randomly assigned patients with higher-risk MDS and chronic myelomonocytic leukemia (CMML) 1:1:1 to azacitidine (75 mg/m²/day on days 1 to 7 of a 28-day cycle); azacitidine plus lenalidomide (10 mg/day on days 1 to 21); or azacitidine plus vorinostat (300 mg twice daily on days 3 to 9). The primary phase II end point was improved ORR. Results Of 277 patients from 90 centers, 92 received azacitidine, 93 received azacitidine plus lenalidomide, and 92 received azacitidine plus vorinostat. Median age was 70 years (range, 28 to 93 years), 85 patients (31%) were female, and 53 patients (19%) had CMML. Serious adverse events were similar across arms, although combination-arm patients were more likely to undergo nonprotocol-defined dose modifications ( P < .001).With a median follow-up of 23 months (range, 1 to 43 months), the ORR was 38% for patients receiving azacitidine, 49% for azacitidine plus lenalidomide ( P = .14 v azacitidine), and 27% for azacitidine plus vorinostat ( P = .16 v azacitidine). For patients with CMML, ORR was higher for azacitidine plus lenalidomide versus azacitidine (68% v 28%, P = .02) but similar for all arms across cytogenetic subgroups, as was remission duration and overall survival. ORR was higher with mutations in DNMT3A and lower for SRSF2, whereas ORR duration improved with fewer mutations. Lenalidomide dose reduction was associated with worse overall survival (hazard ratio, 1.30; P = .05). Conclusion Patients with higher-risk MDS treated with azacitidine-based combinations had similar ORR to azacitidine monotherapy, although patients with CMML benefitted from azacitidine plus lenalidomide. The efficacy of combination regimens may have been affected by dose modifications.

Author List

Sekeres MA, Othus M, List AF, Odenike O, Stone RM, Gore SD, Litzow MR, Buckstein R, Fang M, Roulston D, Bloomfield CD, Moseley A, Nazha A, Zhang Y, Velasco MR, Gaur R, Atallah E, Attar EC, Cook EK, Cull AH, Rauh MJ, Appelbaum FR, Erba HP

Author

Ehab L. Atallah MD Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Antimetabolites, Antineoplastic
Antineoplastic Combined Chemotherapy Protocols
Azacitidine
Humans
Hydroxamic Acids
Leukemia, Myelomonocytic, Chronic
Middle Aged
Myelodysplastic Syndromes
Thalidomide