GH1 and isolated congenital growth hormone deficiency: Mutations in the genes that encode growth hormone (GH1), growth‐hormone‐releasing hormone receptor (GHRHR), and transcription factor SOX3, with variations in PROP1, POU1F1, LHX3, LHX4, SOX2, STAT5B, IGF1, IGFALS, GLI2, and HESX1, are the most common causes of IGHD [1, 2, 3].