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Features include always present findings: Decreased class-switched memory B cell proportion, Moderate global developmental delay, Bronchiectasis, and Lymphadenopathy and others; and common findings: Persistent EBV viremia and Decreased FasL-mediated apoptosis. 10 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 2 | Decreased class-switched memory B cell proportion, Moderate global developmental delay |
TET2 function has not been fully characterized.
Immunodeficiency 75 is associated with mutations in the TET2 gene on chromosome 4.
Genetic testing for TET2 is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for immunodeficiency 75 has been reported in the published literature.
Phenotype severity distribution: 7 always present features, 2 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for immunodeficiency 75.
251 publications have been identified in PubMed for immunodeficiency 75. Research spans Epidemiology / Natural History (46%), Review / Meta-Analysis (19%), and Clinical Trial Publication (14%).
Research Type | Count | % of Total |
|---|---|---|
Disease patterns and progression | 115 | 46% |
Data assembled from 6 of 12 sources · Last updated Nov 3, 2026, 4:16 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Lungs and breathing | 2 | Bronchiectasis, Recurrent respiratory infections |
Blood and immune system | 2 | Recurrent respiratory infections, Lymphoma |
Digestive system | 1 | Hepatosplenomegaly |
47 |
19% |
Clinical study results | 35 | 14% |
Testing and diagnosis research | 22 | 9% |
Laboratory research | 22 | 9% |
Patient case studies | 7 | 3% |
New treatment approaches | 2 | 1% |
Other research | 1 | 0% |
El Khalili O (2026). [PMID: 41439671](https://pubmed.ncbi.nlm.nih.gov/41439671/). *J Med Virol*. [Epidemiology / Natural History]
Liang Y (2026). [PMID: 41105332](https://pubmed.ncbi.nlm.nih.gov/41105332/). *Eur J Clin Microbiol Infect Dis*. [Diagnostic / Biomarker]
Yaseen MM (2026). [PMID: 41504820](https://pubmed.ncbi.nlm.nih.gov/41504820/). *Inflamm Res*. [Review / Meta-Analysis]
Wudu MA (2026). [PMID: 42091789](https://pubmed.ncbi.nlm.nih.gov/42091789/). *J Epidemiol Glob Health*. [Review / Meta-Analysis]
Komakech K (2026). [PMID: 42506936](https://pubmed.ncbi.nlm.nih.gov/42506936/). *J Clin Microbiol*. [Diagnostic / Biomarker]
Sax PE (2026). [PMID: 42244221](https://pubmed.ncbi.nlm.nih.gov/42244221/). *AIDS Patient Care STDS*. [Epidemiology / Natural History]
Kishan A (2026). [PMID: 41025691](https://pubmed.ncbi.nlm.nih.gov/41025691/). *Spine (Phila Pa 1976)*. [Epidemiology / Natural History]
Toprak İD (2026). [PMID: 42253962](https://pubmed.ncbi.nlm.nih.gov/42253962/). *Front Immunol*. [Epidemiology / Natural History]
Ferranti-Ramos A (2026). [PMID: 42625714](https://pubmed.ncbi.nlm.nih.gov/42625714/). *Front Immunol*. [Review / Meta-Analysis]
Martinez-Cordero H (2026). [PMID: 42314548](https://pubmed.ncbi.nlm.nih.gov/42314548/). *Leuk Res*. [Epidemiology / Natural History]