Frontometaphyseal Dysplasia 2, also known as fmd2, is related to frontometaphyseal dysplasia and pulmonary hypertension, primary, 1. An important gene associated with Frontometaphyseal Dysplasia 2 is MAP3K7 (Mitogen-Activated Protein Kinase Kinase Kinase 7). Affiliated tissues include bone and testes, and related phenotypes are high palate and gastroesophageal reflux