SBDS and cryptorchidism: Similarly, cryptorchidism, not reported in patients with SBDS mutations (PubMed and Google Scholar search, June 2022, using cryptorchidism AND Shwachman-Diamond Syndrome), is present in UPN 43, its prevalence in the normal population is 1.7%, and observed in about 20–35% of WDSTS cases [49,61,62].