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Induction and Micro-CT Imaging of Cerebral Cavernous Malformations in Mouse Model
Published on: September 4, 2017
Molecular diagnostic workflow, clinical interpretation of sequence variants, and data repository procedures in 140
Carmela Fusco1, Massimiliano Copetti2, Tommaso Mazza3
1Division of Medical Genetics, Fondazione IRCCS-Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy.
Abstract:
Familial cerebral cavernous malformation (FCCM) is an autosomal dominant vascular disorder caused by heterozygous deleterious variants in KRIT1, CCM2 or PDCD10. In a previous study, we presented the clinical and molecular findings in 140 FCCM individuals. In the present work, we report supporting information on (a) applied diagnostic workflow; (b) clinical significance of molecular findings according to the American College of Medical Genetics and Genomics/Association for Molecular Pathology recommendations; (c) standardization of molecular and clinical data according to the Human Phenotype Ontology; (d) preliminary genotype-phenotype correlations on a subgroup of patients by considering sex, age at diagnosis, neurological symptoms, and number and anatomical site(s) of vascular anomalies; (e) datasets submitted to the Leiden Open Variation Database. An overview of the changes of our diagnostic approach before and after the transition to next-generation sequencing is also reported. This work presents the full procedure that we apply for molecular testing, data interpretation and storing in public databases in FCCM.
Insights
Familial cerebral cavernous malformation (FCCM) is a genetic disorder. This study details the diagnostic workflow, data interpretation, and genotype-phenotype correlations for FCCM patients, enhancing disease understanding and management.
Area of Science:
- Genetics
- Neurology
- Vascular Biology
Background:
- Familial cerebral cavernous malformation (FCCM) is an autosomal dominant vascular disorder.
- It is caused by heterozygous deleterious variants in KRIT1, CCM2, or PDCD10 genes.
- Previous work identified clinical and molecular findings in 140 FCCM individuals.
Purpose of the Study:
- To report supporting information on the diagnostic workflow for FCCM.
- To detail the clinical significance of molecular findings and data standardization.
- To present preliminary genotype-phenotype correlations and data submission to public databases.
Main Methods:
- Applied diagnostic workflow for FCCM molecular testing.
- Interpretation of molecular findings using ACMG/AMP recommendations.
- Standardization of clinical and molecular data using Human Phenotype Ontology.
- Genotype-phenotype correlation analysis in a patient subgroup.
- Data submission to the Leiden Open Variation Database.
Main Results:
- Detailed diagnostic workflow for FCCM, including changes with next-generation sequencing.
- Assessment of clinical significance of identified variants.
- Standardized data for improved research and clinical care.
- Preliminary genotype-phenotype correlations considering clinical factors.
- Submission of datasets to a public variation database.
Conclusions:
- This work provides a comprehensive overview of the FCCM diagnostic procedure.
- It emphasizes molecular testing, data interpretation, and public data storage.
- The findings contribute to a better understanding and management of FCCM.
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