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Any ectodermal dysplasia-syndactyly syndrome in which the cause of the disease is a mutation in the NECTIN4 gene.
Features include always present findings: Alopecia, 2-3 toe cutaneous syndactyly, and Pili torti; and common findings: 2-4 finger cutaneous syndactyly and 4-5 toe syndactyly. 19 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Arms and legs | 5 | 2-4 finger cutaneous syndactyly, 4-5 toe syndactyly, Cutaneous finger syndactyly |
NECTIN4 encodes nectin cell adhesion molecule 4 (510 aa). Seems to be involved in cell adhesion through trans-homophilic and -heterophilic interactions, the latter including specifically interactions with NECTIN1. Highest expression in Skin Sun Exposed Lower leg (205.2 TPM) and Skin Not Sun Exposed Suprapubic (203.6 TPM).
Ectodermal dysplasia-syndactyly syndrome 1 is associated with mutations in the NECTIN4 gene on chromosome 1.
NECTIN4 is classified as a druggable target (Druggable Genome category) with score 34.8.
Genetic testing for NECTIN4 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 3 always present features, 2 common features.
No clinical trials have been registered for ectodermal dysplasia-syndactyly syndrome 1.
3 publications have been identified in PubMed for ectodermal dysplasia-syndactyly syndrome 1. Research spans Case Report / Case Series (67%) and Review / Meta-Analysis (33%).
Abu Assab D (2025). [PMID: 40586252](https://pubmed.ncbi.nlm.nih.gov/40586252/). *Isr Med Assoc J*. [Case Report / Case Series]
Wang Y (2025). [PMID: 39577073](https://pubmed.ncbi.nlm.nih.gov/39577073/). *Breast*. [Review / Meta-Analysis]
Jith G (2024). [PMID: 38726487](https://pubmed.ncbi.nlm.nih.gov/38726487/). *J Hand Surg Asian Pac Vol*. [Case Report / Case Series]
Data assembled from 5 of 12 sources · Last updated Sep 20, 2026, 3:59 PM UTC
Online Mendelian Inheritance in Man
Skin |
4 |
Small nail, Patchy alopecia, Alopecia |
Metabolism | 1 | Heat intolerance |
Head and neck | 1 | Absent facial hair |