disease arises from structure disease arises from alteration in structure 9q34 (Human) epilepsy partial monosomy of the long arm of chromosome 9 Kleefstra syndrome due to 9q34 microdeletion https://github.com/monarch-initiative/mondo/issues/3664 https://github.com/monarch-initiative/mondo/issues/6311 https://github.com/monarch-initiative/mondo/issues/9285 https://www.malacards.org/card/kleefstra_syndrome_1 MONDO:0019896 Orphanet:96147 9qSTDS GARD:0016846 Kleefstra syndrome due to del(9)(q34) Kleefstra syndrome due to 9q subtelomeric deletion DECIPHER:52 9q subtelomeric deletion syndrome Kleefstra syndrome due to monosomy 9q34 Kleefstra syndrome 1