For hypogammaglobulinemia as a complication of successful treatment, do you empirically start prophylaxis with either 400 mg/kg monthly for IVIG or 100 mg/kg weekly for subcutaneous immune globulin?  

Most of the data to support IVIG for hypogam comes from CLL literature. Data in those post-transplant and post-CAR T are limited. IVIG has a reputation of being a bit of a panacea, but I challenge that notion. We investigated the implementation of an IVIG stewardship plan to limit IVIG usage just fo...