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.

Human Mutation
|June 30, 2019
PubMed

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.

Related Concept Videos

Protein Families02:47

Protein Families

Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key...
16.7K
Gene Families01:57

Gene Families

Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
9.8K
Bioequivalence Data: Statistical Interpretation01:16

Bioequivalence Data: Statistical Interpretation

Body:The statistical interpretation of bioequivalence data is a significant aspect of pharmaceutical research. Bioequivalence refers to the absence of any significant difference in the rate and extent to which the active ingredient in pharmaceutical products becomes available at the site of drug action when administered at the same molar dose under similar conditions. This helps determine if different drug products have similar absorption rates, ensuring their interchangeability.Statistical...
197
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
278
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
485
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
315