A literature search of publications reporting patients with heterozygous deletions at 19q12-q13.1 encompassing the TSHZ3 locus revealed CAKUT phenotypes in 5/14 cases, i.e., hydronephrosis in 2/5 cases, small echogenic kidneys, hydroureter, or VUR grade II in 1/5 cases each [31–35]. This evidence concerns the gene TSHZ3 and hydronephrosis.