Benbrahim O, et al. - Researchers ascertained the characteristics of patients suffering from secondary immunodeficiencies (SID) related to haematological malignancies (HM), who started immunoglobulin replacement therapy (IgRT), physicians’ expectations regarding IgRT, and IgRT modalities. Besides well-recognized indications, non-Hodgkin B-cell lymphoma (NHL) was a frequent condition motivating IgRT. The decision of starting IgRT was but, irrespective of current recommendations were also prepared to start IgRT prophylactically even in the absence of a history of infections.