In multivariate analysis regarding event-free survival in multiple myeloma, CD38-expression (GEP) and the chromosomal aberrations t(4;14), del17p13, 1q21 (>2 and >3 copies) are independently prognostic, whereas t(11;14) and hyperdiploidy are not (Table S3 in Supplementary Material). Here, CD38 is linked to AL amyloidosis.