Monarch Disease Ontology term MONDO_0016943 (partial duplication of the short arm of chromosome 6) can be described as follows. Chromosome 6p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 6. 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 6p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. This condition can occur sporadically or be inherited from a parent who is either mildy affected (has the deletion) or carries a balanced translocation. Treatment is based on the signs and symptoms present in each person. Also known as: partial duplication of chromosome 6p, partial duplication of the short arm of chromosome type 6, partial trisomy of chromosome 6p, partial trisomy of the short arm of chromosome 6.