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EBS in Children with De Novo Pathogenic Variants Disturbing Krt14
Anastasiya V Kosykh1, Irina I Ryumina2, Alexandra S Botkina3
1Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, Moscow 117997, Russia.
International Journal of Molecular Sciences
|March 13, 2024
Summary
This study identifies new genetic causes of Epidermolysis Bullosa Simplex (EBS), a rare skin disorder. Early genetic testing is crucial for diagnosing and managing this blistering condition in infants.
Area of Science:
- Genetics
- Dermatology
- Molecular Biology
Background:
- Epidermolysis bullosa simplex (EBS) is a group of inherited skin fragility disorders.
- EBS is characterized by blistering and skin separation at the epidermal basal layer.
- Genetic defects in keratin genes are common causes of EBS.
Observation:
- This study reports three de novo pathogenic variants in young children with neonatal-onset EBS.
- Clinical cases include severe EBS with mottled pigmentation.
- Manifestations appeared within the first few weeks of life.
Findings:
- Pathogenic variants in KRT14 directly cause keratin abnormalities.
- Pathogenic mutations in KLHL24 disrupt KRT14 proteasomal degradation.
- Identified variants include KRT14 Met119Thr, KLHL24 Met1Val, and KRT14 Arg125His.
Implications:
- These findings reveal diverse genetic mechanisms underlying EBS.
- Highlights the importance of genetic screening for early EBS diagnosis.
- Understanding these variants aids in developing targeted management strategies for EBS.
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