Efficacy, safety and survival with ruxolitinib in patients with myelofibrosis: results of a median 2-year follow-up of COMFORT-I.

Journal Article (Journal Article)

COMFORT-I is a randomized, double-blind, placebo-controlled trial of the Janus kinase 1/Janus kinase 2 inhibitor ruxolitinib in 309 patients with intermediate-2 or high-risk myelofibrosis. This analysis of COMFORT-I describes the long-term efficacy and safety of ruxolitinib (median follow-up, 2 years). Spleen volume was measured by magnetic resonance imaging, and quality of life was evaluated using the EORTC QLQ-C30. Overall survival was determined according to randomized treatment group. At the time of this analysis, 100 of 155 patients randomized to ruxolitinib were still receiving treatment. All patients randomized to placebo crossed over to ruxolitinib or discontinued within 3 months of the primary analysis (median time to crossover, 41 weeks). Mean spleen volume reductions in the ruxolitinib group were 31.6% at week 24 and 34.9% at week 96; improvements in quality of life measures were also maintained. Improved survival was observed for ruxolitinib (n=27 deaths) versus placebo (n=41 deaths) (hazard ratio=0.58; 95% confidence interval: 0.36, 0.95; P=0.03). The incidence of new-onset grade 3 or 4 anemia and thrombocytopenia decreased over time to levels observed in patients receiving placebo. These data indicate that ruxolitinib treatment provides durable reductions in spleen volume and improvements in quality of life and suggest a continued survival advantage for ruxolitinib over placebo.

Full Text

Duke Authors

Cited Authors

  • Verstovsek, S; Mesa, RA; Gotlib, J; Levy, RS; Gupta, V; DiPersio, JF; Catalano, JV; Deininger, MWN; Miller, CB; Silver, RT; Talpaz, M; Winton, EF; Harvey, JH; Arcasoy, MO; Hexner, EO; Lyons, RM; Paquette, R; Raza, A; Vaddi, K; Erickson-Viitanen, S; Sun, W; Sandor, V; Kantarjian, HM

Published Date

  • December 2013

Published In

Volume / Issue

  • 98 / 12

Start / End Page

  • 1865 - 1871

PubMed ID

  • 24038026

Pubmed Central ID

  • PMC3856961

Electronic International Standard Serial Number (EISSN)

  • 1592-8721

Digital Object Identifier (DOI)

  • 10.3324/haematol.2013.092155


  • eng

Conference Location

  • Italy