Fyn involvement has also been shown in hematological malignancies, including chronic myeloid leukemia (CML), acute myeloid leukemia (AML), acute lymphoid leukemia (ALL), multiple myeloma, and T cell lymphomas which is associated with poor prognosis (Palomero et al., 2014; Chougule et al., 2016; Laurenzana et al., 2016). The gene discussed is FYN; the disease is AL amyloidosis.