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Interstitial duplication of 20q11.22q13.11: A case report and review of literature.

ABSTRACT:

Background

Reports of interstitial duplication of chromosome 20q11 are rare with only nine published patients to date.

Methods

We performed karyotype and chromosomal microarray analysis on a peripheral blood sample for our patient and reviewed the genes in the region to provide genotype-phenotype correlation.

Results

Clinical features of the patient include minor dysmorphic facial features, shorthands and feet, bilateral conductive hearing loss, global developmental delay, and behavioral issues with attention deficit hyperactivity disorder. Together with previously published cases of 20q11 duplication, we show that patients with overlapping duplications share a similar clinical phenotype of dysmorphic craniofacial features and developmental delay.

Conclusion

We report an 8-year-old girl with a 9.1 Mb interstitial duplication of chromosome 20q11.22q13.11. Our observations suggest that a novel duplication syndrome and documentation of similar cases will further help clarify the phenotype.

SUBMITTER: Goetzinger L

PROVIDER: S-EPMC8404222 | biostudies-literature |

REPOSITORIES: biostudies-literature

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