Recently, an explosion of investigations has revealed the associations of FGFR4 gene polymorphisms with the risk, prognosis, or treatment outcome of numerous cancer types, such as head and neck [12,13], lung [14], prostate [15,16,17], breast [18,19], colon [19], ovarian [20], liver [21], and uterine cervical cancer [22]. Here, FGFR4 is linked to cancer.