Partial trisomy of the long arm of Chromosome 6 in a female with mild intellectual disability and mental health problems

The purpose of this paper is to be the first known case report of a patient with mild intellectual disabilities who has a novel partial trisomy of the long arm of Chromosome 6 (6q25.3→q26).

The patient's history and diagnosis are discussed.

This case highlights the importance of cytogenetic studies in the systematic evaluation of people with intellectual disabilities and co‐morbid psychiatric conditions.

Performing detailed chromosome analysis by array comparative hybridisation on patients with unexplained intellectual disabilities and mental health problems may enable an underlying diagnosis to be identified.