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First page of A novel PTCH1 non-canonical splice region variant associated with Gorlin syndrome: case report

Introduction: Gorlin syndrome (GS) is a rare autosomal dominant condition that predisposes to cutaneous basal cell carcinomas, jaw keratocysts, and skeletal anomalies. Most patients with GS have a heterozygous pathogenic variant in the PTCH1 gene although a minor subset have a pathogenic variant in the SUFU gene. Case Presentation: We report a 34-year-old woman meeting clinical diagnostic criteria for GS and with an affected father who also meets diagnostic criteria. Both had a novel germline splice-region variant that was originally classified as a variant of uncertain significance. Conclusion: We used cDNA analysis to provide additional evidence to allow re-classification of the non-canonical splice variant and provide a formal genetic diagnosis that can also be used for family planning and to screen at-risk relatives.

Journal Section:
Novel Insights from Clinical Practice
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2025
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