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Mosaic trisomy 17

Disease definition

Mosaic trisomy 17 is a rare chromosomal anomaly syndrome, with a highly variable clinical presentation, mostly characterized by growth delay, intellectual disability, body asymmetry with leg length differentiation, scoliosis, and congenital heart anomalies (e.g. ventricular septal defect). Prenatal ultrasound findings include intrauterine growth retardation, nuchal thickening brain anomalies (e.g. cerebellar hypoplasia), pleural effusion and single umbilical artery. Patients with no associated malformations have also been reported.

ORPHA:1711

Classification level: Disorder
  • Synonym(s):
    • Mosaic trisomy chromosome 17
    • Trisomy 17 mosaicism
  • Prevalence: <1 / 1 000 000
  • Inheritance: -
  • Age of onset: Antenatal, Neonatal
  • ICD-10: Q92.1
  • OMIM: -
  • UMLS: C1096168
  • MeSH: -
  • GARD: 5317
  • MedDRA: -
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