syndromic disease hereditary disease Melhem-Fahl syndrome https://github.com/monarch-initiative/mondo/issues/6751 https://github.com/monarch-initiative/mondo/issues/6877 https://rarediseases.info.nih.gov/diseases/3462/melhem-fahl-syndrome https://www.malacards.org/card/melhem_fahl_syndrome_2 MONDO:0016622 Orphanet:2482 SCTID:732263008 Melhem-Fahl syndrome was described in two siblings born to consanguineous parents in 1985 and was characterized by the presence of 15 dorsal vertebrae and rib pairs. No other cases have been documented since the initial report. fifteen dorsal vertebrae and rib pairs GARD:0003462 MEDGEN:444059 UMLS:C2931453 icd11.foundation:999539082 Melhem Fahl syndrome MESH:C537238 dysostosis