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Updated: Dec 8, 2025

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Isolation, Culture, and Characterization of Primary Dermal Fibroblasts from Human Keloid Tissue
Published on: July 28, 2023
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Neuronal Precursor Cell Expressed Developmentally Down Regulated 4 (NEDD4) Gene Polymorphism Contributes to Keloid
Azza G A Farag1, Hesham N Khaled1, Mostafa A Hammam1
1Dermatology, Andrology and STDs Department, Faculty of Medicine, Menoufia University, Shibin El Kom, Egypt.
Clinical, Cosmetic and Investigational Dermatology
|September 18, 2020
Summary
Genetic variations in the NEDD4 gene (rs8032158) are linked to keloid formation in Egyptians. The CC genotype and C allele significantly increase keloid risk and severity.
Area of Science:
- Genetics
- Dermatology
- Molecular Biology
Background:
- Keloids are fibroproliferative skin disorders characterized by excessive extracellular matrix deposition.
- NEDD4 gene involvement in fibrosis and fibroblast proliferation suggests a role in abnormal wound healing.
- Genetic factors are implicated in keloid etiology, though specific genes remain under investigation.
Purpose of the Study:
- To investigate the association between NEDD4 gene polymorphism (rs8032158) and keloid formation in an Egyptian cohort.
- To determine if specific genotypes or alleles of rs8032158 correlate with keloid development or severity.
Main Methods:
- A case-control study involving 100 keloid patients and 60 healthy controls from Egypt.
- Genotyping of the NEDD4 rs8032158 T/C polymorphism using TaqMan allelic discrimination (real-time PCR).
- Assessment of keloid severity using the Vancouver Scar Scale (VSS) and calculation of Body Mass Index (BMI).
Main Results:
- The CC genotype of rs8032158 was significantly more prevalent in keloid patients (p=0.003, OR=1.80).
- The C allele of rs8032158 also showed a significant association with increased keloid risk (P=0.002, OR=2.08).
- CC genotype carriers exhibited significantly higher VSS scores, indicating a correlation with keloid severity.
Conclusions:
- The rs8032158 polymorphism in the NEDD4 gene is a potential risk factor for keloid development in the Egyptian population.
- The CC genotype of NEDD4 rs8032158 may play a role in the severity of keloid scarring.
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