To the Editor: More than half of the non-Hodgkin lymphomas (NHL) occurring in children, adolescents, and young adults (CAYA) in North America and Europe are comprised mature B-cell NHL (B-NHL) [[1]]. Salvage reinduction regimens resulted in 6/12 (50%) patients achieving a CR, 5/12 (41.6%) patients attaining a PR and 1/12 (8.3%) patients with progressive disease (PD). Post MAC autoSCT 7/12 patients (58%) were in a CR, two patients (16.7%) were in a PR, two patients (16.7%) had stable disease and one patient (8.3%) had PD. Amongst the three patients with diffuse large B-cell lymphoma one was in CR, one had stable disease and one had PD post MAC autoSCT. [Extracted from the article]