DDR1 was expressed at lower levels in lymphoid neoplasm diffuse large B-cell (DLBC), KIRC, acute myeloid leukemia (LAML), pancreatic adenocarcinoma (PAAD), pheochromocytoma and paraganglioma (PCPG), prostate adenocarcinoma (PRAD), and skin cutaneous melanoma (SKCM) but was expressed at higher levels in another 18 tumors (Fig. 1B, Supplementary Table S1). This evidence concerns the gene DDR1 and pheochromocytoma-paraganglioma.