As outlined earlier, we were able to additionally type three samples of ALλ (CON7; lymph node (n = 1)), ATTR (CON8; bursa (n = 1)), and ALκ (CON9; myocardium (n = 1)) with unspecific or negative IHC results, but additional high abundance of ApoA4, FGA, and KRT, respectively, without defining the amyloidosis type (Supplemental Fig. S2B). Here, APOA4 is linked to amyloidosis.