Recently, we compared GWAS data from non-syndromic cryptorchidism cases vs. controls (57) and from men with TGCT with or without a history of cryptorchidism vs. controls, and discovered suggestive signals in 19 genes, including RBFOX1 and RBFOX3, paralogs that encode RNA-binding proteins (RBPs) (60). This evidence concerns the gene RBFOX1 and cryptorchidism.