Published in:
01-04-2017 | Original Article
Low-dose pembrolizumab for relapsed/refractory Hodgkin lymphoma: high efficacy with minimal toxicity
Authors:
Thomas S. Y. Chan, Tsan-Hei Luk, June S. M. Lau, Pek-Lan Khong, Yok-Lam Kwong
Published in:
Annals of Hematology
|
Issue 4/2017
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Abstract
Five patients with refractory/relapsed classical Hodgkin lymphoma (cHL), four having failed multiple lines of chemotherapy and brentuximab vedotin, were treated with low-dose pembrolizumab (median dose 100 mg, range: 100–200 mg, every 3 weeks). Complete response (CR) was achieved in four patients (80%), after a median cumulative dose of merely 495 (300–800) milligrams. Three CR patients have continued to receive pembrolizumab for a median of 16 (14–25) cycles, remaining in CR for a median of 18 (9–18) months. One CR patient underwent autologous hematopoietic stem cell transplantation and has remained in CR for 9 months. Partial response (PR) was achieved in one patient (20%), after a cumulative dose of 400 mg. The overall response rate was therefore 100% (CR: 80%; PR: 20%). Toxicity was virtually absent, with only grade 1 diarrhea and eczema each observed in one patient. Low-dose pembrolizumab was highly efficacious, achieving responses with minimal toxicity and at much lower costs.