The patients generally tolerated the drug well. There were 4 treatment-related adverse events in 3 patients, including axillary pain, hypoxia, joint swelling, and pneumonitis. There were no grade 4 treatment-related events or deaths.
Of the tumor samples evaluable, all expressed PD-L1, supporting the rationale for PD-1 blockade in this population, Dr. Moskowitz said.
The results of both his and Dr. Armand’s study support the continued development of PD-1 inhibitors in various subsets of patients with classical Hodgkin’s lymphoma, he said.