CD4 and plasma cell myeloma: For instance, in the CD4+ T cells in samples from patients with myeloma or AL amyloidosis, six analytes (phospho‐p38 MAPK, phospho‐RIP, phospho‐Shp2, phospho‐SQST, phospho‐STING, and phospho‐ULK1) demonstrated high levels of bivariate correlations (Figures S4 and S5, Table S2).