Digenic Mutations in Junctional Epidermolysis Bullosa in An Iranian Family
نویسندگان
1 .Department of Pediatrics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
2 .Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
3 5.Department of Medical Genetics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
4 .Department of Genetic, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
5 4.Department of Internal Medicine, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
doi
10.22074/cellj.2021.7208چکیده
In this study, we describe one Iranian patient who was diagnosed with Epidermolysis Bullosa (EB) because of mutations in three candidate genes, including 3 mutations. Two missense mutations in the LAMA3 (D3134H) and LAMB3 (Y339H) genes and also, a synonymous mutation in the ITGB4 (H422H) gene were identified that leads to the Junctional-EB- Herlitz (JEB-Herlitz) clinical phenotype. The patient had a heterozygous LAMA3 mutation combined with a heterozygous mutation in LAMB3. Our results propose that these mutations produce novel protein-coding transcripts which explain the JEB-Herlitz phenotype in the patient. Interestingly, this is the first report indicating that a digenic inheritance in the LAMA3 and LAMB3 which is responsible for JEB-Herlitz. Also, this is the first digenic inheritance recognized in the JEB-Herlitz family. This study provides a new way to clarify the molecular mechanisms of LAMA3 and LAMB3 genes in JEB-Herlitz.
