In FTC, gain of C1QL1 expression was present in 71% of wFTC and absent in mFTC (P = 0.007; Additional file 12: Table S6), and lymphocytic thyroiditis was only present in FTC with gain of C1QL1 expression (P = 0.026). The gene discussed is C1QL1; the disease is thyroid cancer, nonmedullary, 2.