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Trisomy 21 characterized by the presence of an extra chromosome 21 in all the cells of the organism.
Biomarker and diagnostic research for complete trisomy 21 has been reported in the published literature.
No clinical trials have been registered for complete trisomy 21.
4 publications have been identified in PubMed for complete trisomy 21. Research spans Diagnostic / Biomarker (50%), Case Report / Case Series (25%), and Epidemiology / Natural History (25%).
Baranowski MS (2026). [PMID: 42123932](https://pubmed.ncbi.nlm.nih.gov/42123932/). *Nutrients*. [Epidemiology / Natural History]
Mehra AT (2025). [PMID: 39995092](https://pubmed.ncbi.nlm.nih.gov/39995092/). *Am J Med Genet A*. [Case Report / Case Series]
Kunanukulwatana C (2025). [PMID: 40491497](https://pubmed.ncbi.nlm.nih.gov/40491497/). *Int J Womens Health*. [Diagnostic / Biomarker]
Chen M (2025). [PMID: 40229386](https://pubmed.ncbi.nlm.nih.gov/40229386/). *Sci Rep*. [Diagnostic / Biomarker]
Data assembled from 2 of 12 sources · Last updated Sep 19, 2026, 11:54 PM UTC
Common questions about complete trisomy 21
AI-curated news mentioning complete trisomy 21
Updated Apr 11, 2026
A recent study highlights discrepancies in prenatal diagnostics related to a case of fetal partial trisomy 21 and fetoplacental mosaicism. This research could impact future prenatal screening practices and genetic counseling.