Due to the identification of a loss‐of‐function mutation in Gsα, the term iPPSD2 is appropriate.3 The new proposed classification simplify the clinical discussion, as it gathers the phenotypic categories of GNAS‐related PHP syndromes (including PHP‐1a, PHP‐1c and PPHP) under the unique iPPSD2 entity.3 This evidence concerns the gene GNAS and pseudohypoparathyroidism type 1C.