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Mosaic trisomy 7 is a rare chromosomal anomaly syndrome, with a highly variable phenotype, mostly characterized by blaschkolinear skin pigmentary dysplasia, body asymmetry, enamel dysplasia, and developmental and growth delay. Intellectual disability, facial dysmorphism (e.g. frontal bossing, abnormal palpebral fissures, strabismus, abnormally shaped ears, and micrognathia), and genital anomalies (e.g. undescended testes) have also been observed. It has been reported to be associated with maternal uniparental disomy of chromosome 7, resulting in a Silver-Russell syndrome phenotype. Cases with no associated malformations have also been reported.
Biomarker and diagnostic research for mosaic trisomy 7 has been reported in the published literature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for mosaic trisomy 7.
12 publications have been identified in PubMed for mosaic trisomy 7. Research spans Case Report / Case Series (50%), Diagnostic / Biomarker (25%), and Basic Science / Preclinical (25%).
Research Type | Count | % of Total |
|---|---|---|
Patient case studies | 6 | 50% |
Data assembled from 3 of 12 sources · Last updated Sep 18, 2026, 8:51 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
3 |
25% |
Laboratory research | 3 | 25% |
Harada Y (2026). [PMID: 41709511](https://pubmed.ncbi.nlm.nih.gov/41709511/). *Clinical and experimental reproductive medicine*. [Basic Science / Preclinical]
Koyuncuoglu MA (2025). [PMID: 41078617](https://pubmed.ncbi.nlm.nih.gov/41078617/). *Molecular syndromology*. [Basic Science / Preclinical]
Chen CP (2025). [PMID: 40368535](https://pubmed.ncbi.nlm.nih.gov/40368535/). *Taiwanese journal of obstetrics & gynecology*. [Case Report / Case Series]
Pironkova S (2025). [PMID: 40571890](https://pubmed.ncbi.nlm.nih.gov/40571890/). *Pediatric blood & cancer*. [Case Report / Case Series]
Tang X (2025). [PMID: 39779331](https://pubmed.ncbi.nlm.nih.gov/39779331/). *Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics*. [Case Report / Case Series]
Murry JB (2025). [PMID: 40725393](https://pubmed.ncbi.nlm.nih.gov/40725393/). *Genes*. [Basic Science / Preclinical]
Peng H (2025). [PMID: 40229547](https://pubmed.ncbi.nlm.nih.gov/40229547/). *Scientific reports*. [Diagnostic / Biomarker]
Chen CP (2024). [PMID: 39004491](https://pubmed.ncbi.nlm.nih.gov/39004491/). *Taiwanese journal of obstetrics & gynecology*. [Case Report / Case Series]
Chen CP (2024). [PMID: 39004485](https://pubmed.ncbi.nlm.nih.gov/39004485/). *Taiwanese journal of obstetrics & gynecology*. [Case Report / Case Series]
Chen CP (2024). [PMID: 38802190](https://pubmed.ncbi.nlm.nih.gov/38802190/). *Taiwanese journal of obstetrics & gynecology*. [Diagnostic / Biomarker]