In their study, they reported that the mutations in the human gene, paracellin-1 (PCLN-1)/CLDN-16 causes an autosomal recessive disorder called Familial hypomagnesemia with hypercalcinuria and nephrocalcinosis (FHHNC) characterized with renal Mg2+ and Ca+ wasting. Here, CLDN16 is linked to familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis.