WP5223 - 2q21.1 copy number variation syndrome - Homo sapiens

The 2q21.1 copy number variation syndrome can result in the loss of up to 9 protein-coding genes. Deletions and duplications in 2q21.1 were reported to be connected to intellectual disability, hyperactivity, and aggressive behavior (DOI: 10.1002/mgg3.1135,DOI: 10.1002/ajmg.a.36357). The clinical picture was explained by alterations in five genes important for neurological development, namely GPR148, FAM123C, ARHGEF4, FAM168B and PLEKHB2 (DOI: 10.1002/ajmg.a.36357,DOI: 10.1093/hmg/dds166). Analogically, changes in tubulin genes in 2q21.1 were linked to Motor Timing in ADHD (DOI: 10.1016/j.ajhg.2008.06.006). For this rare disorder, two different genomic locations are known according to Kirov et al. 2014 and literature cited there and Gimelli et al. 2014 with a larger deletion.