disease arises from structure disease arises from alteration in structure 17q21.31 (Human) Koolen-de Vries syndrome partial deletion of the long arm of chromosome 17 Koolen-de Vries syndrome due to 17q21.31 microdeletion syndrome https://github.com/monarch-initiative/mondo/issues/3664 https://github.com/monarch-initiative/mondo/issues/4174 Orphanet:363958 Del(17)(q21.31) GARD:0017576 MESH:C566476 SCTID:717338006 monosomy 17q21.31 MONDO:0018216 17q21.31 recurrent microdeletion syndrome DECIPHER:57 DOID:0050880 DOID:0070076