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Features include always present findings: Irregularly shaped sperm tail, Coiled sperm flagella, Male infertility, and Reduced sperm motility and others.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Hormones | 1 | Male infertility |
CFAP251 encodes cilia and flagella associated protein 251 (1,149 aa). Involved in spermatozoa motility. May also regulate cilium motility through its role in the assembly of the axonemal radial spokes Highest expression in Testis (30.9 TPM) and Pituitary (13.5 TPM).
Spermatogenic failure 33 is associated with mutations in the CFAP251 gene on chromosome 12.
CFAP251 is classified as a druggable target with score 0.0.
Genetic testing for CFAP251 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 6 always present features.
No clinical trials have been registered for spermatogenic failure 33.
8 publications have been identified in PubMed for spermatogenic failure 33. Research spans Review / Meta-Analysis (38%), Basic Science / Preclinical (38%), and Case Report / Case Series (13%).
Atkins GR (2026). [PMID: 41756962](https://pubmed.ncbi.nlm.nih.gov/41756962/). *bioRxiv*. [Basic Science / Preclinical]
Noor AA (2026). [PMID: 41271156](https://pubmed.ncbi.nlm.nih.gov/41271156/). *Parasitol Int*. [Epidemiology / Natural History]
Rehfeld JF (2025). [PMID: 40557463](https://pubmed.ncbi.nlm.nih.gov/40557463/). *J Intern Med*. [Review / Meta-Analysis]
Marić T (2025). [PMID: 39777458](https://pubmed.ncbi.nlm.nih.gov/39777458/). *Hum Mol Genet*. [Basic Science / Preclinical]
Lin M (2025). [PMID: 40418379](https://pubmed.ncbi.nlm.nih.gov/40418379/). *Cell Mol Life Sci*. [Basic Science / Preclinical]
Gao T (2025). [PMID: 40442757](https://pubmed.ncbi.nlm.nih.gov/40442757/). *Cell Commun Signal*. [Review / Meta-Analysis]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 1:58 AM UTC
Online Mendelian Inheritance in Man
Genetic and Rare Diseases Info Center
Wang X (2025). [PMID: 41339899](https://pubmed.ncbi.nlm.nih.gov/41339899/). *Reprod Biol Endocrinol*. [Review / Meta-Analysis]
Klarić ML (2024). [PMID: 38927643](https://pubmed.ncbi.nlm.nih.gov/38927643/). *Genes (Basel)*. [Case Report / Case Series]