Frontonasal dysostosis in two successive generations

Area of Science:

• Genetics
• Developmental Biology
• Pediatrics

Background:

• Frontonasal dysostosis is a congenital condition characterized by specific craniofacial malformations.
• While typically sporadic, familial occurrences of frontonasal dysostosis have been documented.

Observation:

• A 2-year-old girl presented with anterior cranium bifidum occultum, corpus callosum lipoma, and hypertelorism.
• Her mother exhibited a widow's peak and a history of cribriform plate defect causing nasal drip.

Findings:

• The observed familial pattern in this case suggests potential autosomal dominant or X-linked dominant inheritance.
• This case expands the phenotypic spectrum of frontonasal dysostosis.

Implications:

• Early identification of mild frontonasal dysostosis expressions is crucial for accurate genetic counseling.
• Understanding inheritance patterns aids in predicting recurrence risk and family planning.