PDGFA and AL amyloidosis: A total of 25 peripheral blood samples from 20 multiple myeloma patients and 5 matched healthy controls showed overexpression of the circular ATPase phospholipid-transporting 10A (circ-ATP10A) in the multiple myeloma samples, mechanistically acting as a sponge of several miRNAs to consequently regulate the expression of downstream VEGFB, HIF1A, PDGFA, and FGF [122].