Transglutaminase-1 mutations in Omani families with lamellar ichthyosis

Aisha Al-Naamani, Ahmed Al-Waily, Mohammed Al-Kindi, Maha Al-Awadi, Said Ali Al-Yahyaee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Objective: To determine the molecular basis of familial ichthyosis in three Omani families. Subjects and Methods: Nine patients from three consanguineous families, A, B, and C, were born with typical features of lamellar ichthyosis subtype including collodion membrane and maintained ectropion, and epidermal scaling through their childhood. The 4 patients from family B had more severe symptoms requiring neonatal critical care and subsequent regular treatment with emollients, eye lubricants, and low-dose acitretin. DNA was extracted from peripheral blood by standard methods. The samples were initially genotyped to screen known loci linked to recessive ichthyosis on chromosomes 2q33-32 (ABCA12), 14q11 (TGM1), and 19p12-q12 using commercially supplied polymorphic fluorescent microsatellite markers. TGM1 was analyzed by direct sequencing for disease-associated mutations. Results: Two known pathogenic mutations in TGM1 were detected: p.Gly278Arg in families A and B and p.Arg396His in family C. These two mutations were segregating in an autosomal recessive mode of inheritance. Conclusion: Two known pathogenic TGM1 mutations were detected in three large consanguineous Omani families with lamellar ichthyosis. This study confirmed the geographic distribution of known mutations to an apparently unrelated population.

Original languageEnglish
Pages (from-to)438-443
Number of pages6
JournalMedical Principles and Practice
Volume22
Issue number5
DOIs
Publication statusPublished - Sep 2013

Fingerprint

Lamellar Ichthyosis
Mutation
Ichthyosis
Acitretin
Emollients
Ectropion
Lubricants
Collodion
Critical Care
Microsatellite Repeats
transglutaminase 1
Chromosomes
Membranes
DNA
Population

Keywords

  • Collodion baby
  • Oman
  • Scaly skin
  • TGM1

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Transglutaminase-1 mutations in Omani families with lamellar ichthyosis. / Al-Naamani, Aisha; Al-Waily, Ahmed; Al-Kindi, Mohammed; Al-Awadi, Maha; Al-Yahyaee, Said Ali.

In: Medical Principles and Practice, Vol. 22, No. 5, 09.2013, p. 438-443.

Research output: Contribution to journalArticle

Al-Naamani, Aisha ; Al-Waily, Ahmed ; Al-Kindi, Mohammed ; Al-Awadi, Maha ; Al-Yahyaee, Said Ali. / Transglutaminase-1 mutations in Omani families with lamellar ichthyosis. In: Medical Principles and Practice. 2013 ; Vol. 22, No. 5. pp. 438-443.
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