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Gorlin syndrome: the PTCH gene links ocular developmental defects and tumour formation

Aim: To identify a gene linking microphthalmia with cyst with early onset medulloblastoma. Methods: Mutation analysis of the PTCH gene. Results: A mutation in exon 10 of the PTCH gene was identified, confirming a diagnosis of Gorlin syndrome. Conclusions: This is the first genetically identified mutation giving rise to microphthalmia with cyst and provides a valuable link in the eye developmental gene pathway.