Yin et al. [54] reported that homozygous deletion of exon 5 of FHIT was positively associated with lymph node metastasis of differentiated thyroid cancer and the homozygous deletion of exon 8 was positively associated with the tumor pathological grade, TNM staging, and lymph node metastasis of differentiated thyroid cancer. Here, FHIT is linked to differentiated thyroid carcinoma.