familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis https://rarediseases.info.nih.gov/diseases/9891/familial-primary-hypomagnesemia-with-hypercalciuria-and-nephrocalcinosis https://www.malacards.org/card/primary_hypomagnesemia_with_hypercalciuria_and_nephrocalcinosis UMLS:C5679977 Michellis-Castrillo syndrome FHHNC GARD:0021254 Orphanet:306516 MEDGEN:1843047 Familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) is a form of familial primary hypomagnesemia (FPH), characterized by renal magnesium (Mg) and calcium (Ca) wasting, nephrocalcinosis, kidney failure and, in some cases, severe ocular impairment. Two subtypes of FHHNC are described: FHHNC with severe ocular involvement (FHHNCOI) and without severe ocular involvement (FHHN). MONDO:0017624 familial primary hypomagnesemia