Clinical Benefit-Risk Profile of Lenalidomide in Patients With Lower-risk Myelodysplastic Syndromes Without del(5q): Results of a Phase III Trial. | Aplastic Anemia & MDS International Foundation

Clinical Benefit-Risk Profile of Lenalidomide in Patients With Lower-risk Myelodysplastic Syndromes Without del(5q): Results of a Phase III Trial.

Journal Title: 
Clin Lymphoma Myeloma Leuk
Primary Author: 
Garcia-Manero G
Author(s): 
Garcia-Manero G, Almeida A, Fenaux P, Gattermann N, Giagounidis A, Goldberg SL, Ozawa K, Weaver J, Santini V.
Original Publication Date: 
Friday, December 21, 2018
BACKGROUND:
In the phase III MDS-005 study of patients with lower-risk, non-del(5q) myelodysplastic syndromes, lenalidomide was associated with a higher rate of ≥ 8 weeks red blood cell transfusion independence (RBC-TI) compared with placebo, but also with a higher risk of hematologic adverse events (AEs).
PATIENTS AND METHODS:
This analysis evaluated the ratio of clinical benefit-risk in patients treated with lenalidomide or placebo, and assessed the effect of lenalidomide dose reductions on response. Clinical benefit was a composite endpoint defined as RBC-TI, transfusion reduction ≥ 4 units packed red blood cells, hemoglobin increase ≥ 1.5 g/dL, or cytogenetic response.
RESULTS:
The rate of clinical benefit was higher with lenalidomide than with placebo (31.9% vs. 3.8%). The ratio of response (RBC-TI and clinical benefit) to risk (hematologic AEs) favored lenalidomide over placebo. Patients who underwent ≥ 1 lenalidomide dose reduction had a longer duration of treatment, received a higher cumulative dose, and were more likely to experience clinical benefit versus patients without dose reductions.
CONCLUSION:
Despite the occurrence of hematologic AEs, the overall benefit-risk profile supported lenalidomide treatment. Appropriate management of hematologic AEs by dose reductions may help patients with myelodysplastic syndromes to remain on treatment and achieve clinical benefit.
Bone Marrow Diseases: