Hypoparathyroidism, X-Linked, also known as hypx, is related to hypoparathyroidism and brain small vessel disease 2. An important gene associated with Hypoparathyroidism, X-Linked is HPT (Hypoparathyroidism), and among its related pathways/superpathways is Ion channel transport. Affiliated tissues include kidney and thyroid, and related phenotypes are seizure and tetany