Long-Term Outcomes of Hairy Cell Leukemia Treated With Purine Analogs: A Comparison With the General Population.

Long-Term Outcomes of Hairy Cell Leukemia Treated With Purine Analogs: A Comparison With the General Population. Clin Lymphoma Myeloma Leuk. 2017 Jul 14;: Authors: Madanat YF, Rybicki L, Radivoyevitch T, Jagadeesh D, Dean R, Pohlman B, Kalaycio M, Sekeres MA, Smith MR, Hill BT Abstract Hairy cell leukemia (HCL) is a rare hematologic malignancy with high response rates and long progression-free survival (PFS) after treatment with purine nucleoside analogs (PNAs; Pentostatin/Cladribine). However, treatment is not curative, and subsequent treatment at relapse is often required. Rechallenge with a purine analog is commonly implemented despite limited data regarding the efficacy of this approach. We retrospectively analyzed 61 consecutive patients with HCL diagnosed between 1995 and 2013 at Cleveland Clinic. Median follow-up was 72 months (3-193). Cladribine as first-line therapy was administered to 59 patients (97%). Overall response rate (ORR) was 97%, with 78% of patients achieving complete remission (CR). PFS after response was significantly improved for patients who achieved CR compared with those with a partial remission (PR) (5-year PFS 71% vs. 39%, respectively [P = .004]). Of the 19 patients who relapsed, 12 received PNAs as second-line treatment with an ORR (83%) comparable to what these patients had with first-line treatment (ORR 92%). Overall survival of all 61 patients was excellent and superior to that of age-, sex-, and ra...
Source: Clinical Lymphoma and Myeloma - Category: Cancer & Oncology Authors: Tags: Clin Lymphoma Myeloma Leuk Source Type: research