PRB2 and autoimmune polyendocrinopathy: Correlation analyses of the various antibody profiles in the Ret+ CM group demonstrated antibodies associated with anti-phospholipid syndrome (APS) correlated with one another, namely anti-PL, anti-PS, and anti-CL (Supplemental Figure 3; Spearman’s rho [Rs] range = 0.48–0.84, P < 0.005–0.0005).