between the proximal and distal ORDRs. NAHR is also thought to give rise to the reciprocal microdeletion syndrome, the polymorphic inversion between the ORDRs and a variety of other large scale abnormalities involving the short arm of chromosome 8. Diagnosis Phenotypes See also Chromosome 8 (human) References External links DECIPHER database description Genetic disorders with no OMIM Rare genetic syndromes Syndromes with intellectual disability Syndromes with craniofacial abnormalities Syndromes affecting the heart