Laboratory medicine · 2024
Whole-exome sequencing uncovers a novel EFEMP2 gene variant (c.C247T) associated with dominant nonsyndromic thoracic aortic aneurysm.
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Sadeghipour Parham, Valuian Marzieh, Ghasemi Serwa, Rafiee Farnaz, Pourirahim Maryam, Mahmoodian Mehran, Maleki Majid, Kalayinia Samira
Аннотация
BACKGROUND: Thoracic aortic aneurysm (TAA) is a multifactorial disorder. Familial TAA, which is more clinically aggressive, is associated with a high risk of lethal dissection or rupture. Genetic evaluation can provide TAA patients with personalized treatment and help in predicting risk to family members.
OBJECTIVE: The purpose of this investigation was to report a likely pathogenic variant in the EFEMP2 gene that may contribute to TAA in a family with a documented history of the condition.
METHODS: In the index patient, the causative genetic predisposition was identified using whole-exome sequencing. The potential likely pathogenic effect of the candidate variant was further analyzed through bioinformatics analysis, homology modeling, and molecular docking.
RESULTS: The results revealed a likely pathogenic heterozygous variant, c.247C>T p.Arg83Cys, in exon 4 of the EFEMP2 gene (NM_016938), which was predicted to have disease-causing effects by MutationTaster, PROVEAN, SIFT, and CADD (phred score = 27.6).
CONCLUSION: In this study, a likely pathogenic variant in the EFEMP2 gene was identified in an Iranian family with a dominant pattern of autosomal inheritance of TAA. This finding underscores the importance of conducting molecular genetic evaluations in families with nonsyndromic TAA and the significance of early detection of at-risk family members.
OBJECTIVE: The purpose of this investigation was to report a likely pathogenic variant in the EFEMP2 gene that may contribute to TAA in a family with a documented history of the condition.
METHODS: In the index patient, the causative genetic predisposition was identified using whole-exome sequencing. The potential likely pathogenic effect of the candidate variant was further analyzed through bioinformatics analysis, homology modeling, and molecular docking.
RESULTS: The results revealed a likely pathogenic heterozygous variant, c.247C>T p.Arg83Cys, in exon 4 of the EFEMP2 gene (NM_016938), which was predicted to have disease-causing effects by MutationTaster, PROVEAN, SIFT, and CADD (phred score = 27.6).
CONCLUSION: In this study, a likely pathogenic variant in the EFEMP2 gene was identified in an Iranian family with a dominant pattern of autosomal inheritance of TAA. This finding underscores the importance of conducting molecular genetic evaluations in families with nonsyndromic TAA and the significance of early detection of at-risk family members.