For thyroiditis patients with no mutation, the number of loci was 34 with 19 corresponding genes, and the genes were as follows: MUC16, HLA-DRB5, NDUFB2, MKI67, XRCC1, IL6R, SOAT1, FAM129A, SLC4A3, KDR, CD74, CDKN1A, ROS1, BRAF, TG, CD44, CCND1, TP53, BIRC5. The gene discussed is CDKN1A; the disease is thyroid gland disorder.