Indian Journal of Dermatology
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Year : 2022  |  Volume : 67  |  Issue : 1  |  Page : 45-49

Epidermolysis bullosa: A report of three cases with novel heterozygous deletions in PLEC and homozygous non sense mutations in COL7A1 genes

Department of Cell Biology, Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India

Correspondence Address:
Venkateshwari Ananthapur
Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad - 500 016, Telangana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijd.ijd_880_20

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Epidermolysis bullosa (EB) is a group of rare inherited conditions that results in blistering of the skin and mucous membranes. Mutations in the PLEC gene cause epidermolysis bullosa simplex (EBS). Mutations in type VII collagen, encoded by COL7A1 lead to epidermolysis bullosa dystrophica (EBD). The report presents three autosomal recessive cases, one with epidermolysis bullosa simplex (EBS) with nail and muscular dystrophy showing heterozygous single base pair deletion in exon 31 (chr8:144998220delC; c. 6288del; p. Arg2097AlafsTer55) and a heterozygous two base pair deletion in exon 27 (chr8:145001693_145001694delCT; c. 4054_4055del; p. Ser1352CysfsTer68) of PLEC gene. Two cases of epidermolysis bullosa dystrophica (EBD), with a novel homozygous, nonsense mutations in exon 54 (c. 5047C > T) and exon 104 (c. 7762C > T) of COL7A1 gene. The findings of the case report, provide evidence for additional molecular heterogeneity, in epidermolysis bullosa and also emphasize the significance of PLEC and COL7A1 gene mutations in epidermolysis bullosa.

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