Despite the thorough analysis, no known pathogenic variants were found in genes typically associated with Fahr’s syndrome (e.g., XRP1, PDGFRB, JAM2, PDGFB, SLC20A2, or MYORG) or pseudohypoparathyroidism (e.g., GNAS, STX16, or GNASAS1). Here, STX16 is linked to pseudohypoparathyroidism.