Mutations in the p63 gene have recently been delineated as the molecular basis for some cases of the ectrodactyly, ectodermal dysplasia and cleft lip/palate (EEC) syndrome, an autosomal dominant disorder (MIM 129900). In this report, we describe a 35-year-old woman with EEC syndrome and document a heterozygous germline missense mutation, R304W, in exon 8 of the p63 gene. As with most other p63 mutations in EEC syndrome, this mutation has arisen de novo and is located within the core DNA-binding domain of p63. Identification of this mutation has implications for genetic counselling and the feasibility of future DNA-based prenatal diagnosis in this individual.