Cheng, D;
Shang, X;
Gao, W;
Barkhof, F;
Liu, Y;
(2021)
Fetal Familial Cerebral Cavernous Malformation With a Novel Heterozygous KRIT1 Pathogenic Variant.
Neurology
, 97
(21)
pp. 986-988.
10.1212/WNL.0000000000012852.
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Abstract
OBJECTIVES: To identify fetal familial cerebral cavernous malformation (CCMs) and a novel mutation. METHODS: A 37-year-old pregnant woman (G4P0) presented right-handed numbness since two weeks at 31 weeks of gestation. Evaluation with brain magnetic resonance imaging (MRI) revealed multiple CCMs. As a result, fetal MRI, fetal Whole Exome Sequencing (WES), and maternal Sanger sequencing were performed. RESULTS: The mother's brain MRI demonstrated numerous CCMs involving the brain stem, cerebral hemispheres, and cerebellum. Fetal MRI showed a CCM located in the left frontal lobe in SWI. The neuroimaging characteristics of the mother and the fetus suggested that their CCMs may be familial. Genetic analysis revealed a novel mutation in KRIT1 (c.1A>G, p.0?), also called CCM1, in the mother and the baby. The mother delivered a daughter at 32 weeks of gestation with an Apgar score of 10 by cesarean section. DISCUSSION: This mutation of the initial codon in the KRIT1 gene leads to a phenotype with an early-onset. To our knowledge, this is the first-ever reported case of fetal familial CCM and this novel mutation. Brain MRI has excellent sensitivity and specificity, providing the best option for detecting CCMs, even in utero, primarily when SWI is used.
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