Ross et al. have investigated trogocytosis in both the allogeneic experimental setting and in patients with multiple myeloma and other B-cell malignancies; they identified 2 molecules as potential transfer candidates, human leukocyte antigen (HLA)-G and the B7 molecule CD86, and identified T cells as the most common recipient lymphocyte subpopulation [8]. This evidence concerns the gene CD86 and AL amyloidosis.