partial duplication of chromosome 3 partial duplication of the long arm of chromosome 3 https://github.com/monarch-initiative/mondo/issues/3492 https://www.malacards.org/card/partial_duplication_of_the_long_arm_of_chromosome_3 Orphanet:262851 UMLS:C0795809 MESH:C536813 icd11.foundation:1132834719 partial trisomy of chromosome 3q MEDGEN:208636 partial duplication of chromosome 3q Duplication 3q partial duplication of the long arm of chromosome type 3 MONDO:0016954 chromosome 3q duplication Chromosome 3q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on thelong arm (q) of chromosome 3. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 3q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Chromosome 3q duplication can be de novo or inherited from a parent with a chromosomal rearrangement such as a balanced translocation. Treatment is based on the signs and symptoms present in each person. trisomy 3q chromosome 3, trisomy 3q obsolete_partial duplication of the long arm of chromosome 3