disease arises from structure disease arises from alteration in structure 20p13 (Human) syndromic intellectual disability syndrome caused by partial chromosomal deletion multiple congenital anomalies/dysmorphic syndrome-intellectual disability partial monosomy of the short arm of chromosome 20 20p13 microdeletion syndrome https://github.com/monarch-initiative/mondo/issues/3664 https://www.malacards.org/card/20p13_microdeletion_syndrome GARD:0021360 monosomy 20p13 20p subtelomeric deletion syndrome Del(20)(p13) UMLS:C4750789 MEDGEN:1655817 MONDO:0017780 20p13 microdeletion syndrome is a rare chromosomal anomaly characterized by developmental delay, mild to moderate intellectual disability, epilepsy, and unspecific dysmorphic signs. High palate, delayed permanent tooth eruption, hypoplastic fingernails, clinodactyly and short fingers have also been reported. Orphanet:313781