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Novel KRIT1/CCM1 mutation in a patient with retinal cavernous hemangioma and cerebral cavernous malformation
Shantan Reddy1, Michael B Gorin, Tara A McCannel
1NYU Langone Medical Center, 530 First Avenue, New York, NY 10016, USA. reddys02@gmail.com
Insights
Researchers identified a novel KRIT1/CCM1 gene mutation in a patient with retinal cavernous hemangiomas and cerebral cavernous malformations (CCM). This suggests a shared genetic mechanism underlies both conditions.
Area of Science:
- Ophthalmology
- Genetics
- Neurology
Background:
- Retinal cavernous hemangiomas are rare vascular anomalies.
- They can be associated with cerebral cavernous malformations (CCMs).
- Distinct mutations have been identified in patients with both conditions.
Observation:
- A patient with both retinal cavernous hemangioma and CCM underwent diagnostic testing.
- Methods included fluorescein angiography, spectral domain optical coherence tomography, and genetic testing.
Findings:
- Genetic analysis revealed heterozygosity for a novel frameshift mutation (c.1088delC) in the KRIT1/CCM1 gene.
- This mutation is predicted to cause premature protein termination.
- The identified mutation is linked to the patient's co-occurring conditions.
Implications:
- A novel mutation in the KRIT1/CCM1 gene is associated with both retinal cavernous hemangiomas and CCMs.
- This finding supports a common underlying genetic mechanism for these vascular anomalies.
- Further research into KRIT1/CCM1 gene function may elucidate disease pathogenesis and inform therapeutic strategies.
Background:
Retinal cavernous hemangiomas are rare vascular anomalies, and can be associated with cerebral cavernous malformations (CCM). Distinct mutations have been reported in patients who have both CCMs and retinal cavernous hemangiomas.
Methods:
Fluorescein angiography, spectral domain optical coherence tomography, and genetic testing were performed on a patient with a retinal cavernous hemangioma and a CCM.
Results:
Our patient was heterozygous in the KRIT1/CCM1 gene for a frameshift mutation, c.1088delC. This would be predicted to result in premature protein termination.
Discussion:
We have identified a novel mutation in the KRIT1/CCM1 gene in a patient with both CCM and retinal cavernous hemangioma. We hypothesize that the occurrence of retinal cavernous hemangiomas and CCMs is underlaid by a common mechanism present in the KRIT1/CCM1 gene.
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