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17p13.3 microduplication syndrome is characterized by variable psychomotor delay and dysmorphic features.
Features include common findings: Low muscle tone (hypotonia), Thin upper lip vermilion, Low hanging columella, and Global developmental delay and others; and sometimes findings: Upslanted palpebral fissure, Large hands, Strabismus, and Short stature and others.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Head and neck | 7 | Sagittal craniosynostosis, Thin upper lip vermilion, High palate |
Phenotype severity distribution: 5 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for chromosome 17p13.3 duplication syndrome.
4 publications have been identified in PubMed for chromosome 17p13.3 duplication syndrome. Research spans Case Report / Case Series (50%), Review / Meta-Analysis (25%), and Basic Science / Preclinical (25%).
Ji X (2025). [PMID: 40390087](https://pubmed.ncbi.nlm.nih.gov/40390087/). *BMC medical genomics*. [Review / Meta-Analysis]
Kim SY (2025). [PMID: 39513527](https://pubmed.ncbi.nlm.nih.gov/39513527/). *American journal of medical genetics. Part A*. [Case Report / Case Series]
Lee AJ (2025). [PMID: 40140366](https://pubmed.ncbi.nlm.nih.gov/40140366/). *Human genome variation*. [Basic Science / Preclinical]
Querter I (2025). [PMID: 40642416](https://pubmed.ncbi.nlm.nih.gov/40642416/). *Frontiers in psychiatry*. [Case Report / Case Series]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 4:39 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Brain and nerves |
3 |
Delayed fine motor development, Global developmental delay, Compulsive behaviors |
Bones and joints | 3 | Sideways curvature of the spine (scoliosis), Prominent proximal interphalangeal joints, Accelerated skeletal maturation |
Arms and legs | 2 | Large hands, Short distal phalanx of finger |
Growth and development | 2 | Short stature, Tall stature |
Eyes | 1 | Strabismus |
Muscles | 1 | Low muscle tone (hypotonia) |
Age of onset: infancy.