Familial Precocious Fetal Abnormal Cortical Sulcation

Area of Science:

• Neuroscience
• Developmental Biology
• Medical Genetics

Background:

• Human cerebral cortex development is intricate, with deviations potentially causing neurological disorders.
• Prenatal diagnosis of fetal brain anomalies necessitates advanced imaging and histopathological correlation.
• Skeletal dysplasias can be associated with central nervous system malformations.

Observation:

• Familial cases presented with prenatally diagnosed abnormal brains and skeletal features.
• Magnetic resonance imaging revealed aberrant symmetrical mesial oversulcation of the parietooccipital lobes.
• Histopathology showed focal micropolgyria and heterotopic cortical tissue.

Findings:

• Genetic analysis excluded known FGFR3 mutations linked to skeletal dysplasia and brain oversulcation.
• The findings suggest a distinct class of rare skeletal and brain developmental syndromes.
• This points to potential novel genetic defects within or related to the FGFR3 gene.

Implications:

• Highlights a rare, unreported congenital brain malformation with associated skeletal abnormalities.
• Emphasizes the importance of integrated imaging, histopathology, and molecular studies in diagnosing rare developmental disorders.
• Opens avenues for research into new genetic underpinnings of syndromic brain and skeletal malformations.