New therapeutic antibodies and T cells redirected to specific antigen targets with engineered chimeric antigen receptors (CARs) are emerging as powerful therapies in haematologic malignancies and multiple myeloma (MM). Various designs, manufacturing processes, and study populations, among other variables, have been tested and reported in clinical trials in MM. Here, we review and compare ongoing trials and the results of the reported clinical trials. We also discuss the outlook for CAR-T cell therapies, including managing toxicities and expanding the availability of personalized cell therapy as a promising approach to all haematologic malignancies.