Such TRP channelopathies include night blindness (TRPM1) [42], progressive familial heart block type I (TRPM4) [43], hypomagnesemia with secondary hypocalcemia (TRPM6) [44], and autosomal dominant polycystic kidney disease (TRPP2) [45], to name a few. This evidence concerns the gene PKD2 and familial primary hypomagnesemia.