SPP1 and congenital bilateral aplasia of vas deferens from CFTR mutation: Although the independent roles of LINC00702, miR-181b-5p, and SPP1 in CAVDs have been clarified, this study has been the first to speculate on the role of the LINC00702-miR-181b-5p-SPP1 axis in CAVD, which warrants further verification.