Oculo-facio-cardio-dental (OFCD) syndrome: The first Italian case of BCOR and co-occurring OTC gene deletion

Oculo-facio-cardio-dental (OFCD) syndrome is a rare genetic disorder affecting ocular, facial, dental and cardiac systems. The syndrome is an X-linked dominant trait and it might be lethal in males. This syndrome is usually caused by mutations in the BCL6 interacting co-repressor gene (BCOR). We described a female child with mild phenotype of oculo-facio-cardio-dental syndrome. Array-comparative genomic hybridization (a-CGH) analysis revealed a de novo heterozygous deletion in the Xp11.4 region of approximately 2.3Mb, involving BCOR and ornithine carbamoyl-transferase (OTC) genes. The deletion observed was subsequently confirmed by real time PCR. In this study we report a first case with co-occurrence of BCOR and OTC genes completely deleted in OFCD syndrome. •We describe a female child with a mild phenotype of oculo-facio-cardio-dental syndrome.•a-CGH identified a de novo heterozygous deletion covering both BCOR and OTC genes.•a-CGH is a powerful diagnostic tool to identify chromosomal rearrangements.