7-140781676-C-T
Variant summary
Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BA1
This summary comes from the ClinGen Evidence Repository: The filtering allele frequency of the c.1332G>A (p.Arg444=) variant in the BRAF gene is 0.077% (64/66708) of European chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen RASopathy Expert Panel (BA1; PMID:29493581) LINK:https://erepo.genome.network/evrepo/ui/classification/CA135067/MONDO:0021060/004
Frequency
Consequence
NM_001374258.1 synonymous
Scores
Clinical Significance
Conservation
Publications
- cardiofaciocutaneous syndromeInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
- cardiofaciocutaneous syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics, G2P, Genomics England PanelApp
- LEOPARD syndrome 3Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
- Noonan syndrome 7Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P, Ambry Genetics, Genomics England PanelApp
- Noonan syndromeInheritance: AD Classification: MODERATE Submitted by: ClinGen
- Noonan syndrome with multiple lentiginesInheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: ClinGen, Orphanet
- anaplastic astrocytomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
- Costello syndromeInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Benign. The variant received -8 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| BRAF | ENST00000644969.2 | c.1452G>A | p.Arg484Arg | synonymous_variant | Exon 12 of 20 | NM_001374258.1 | ENSP00000496776.1 | |||
| BRAF | ENST00000646891.2 | c.1332G>A | p.Arg444Arg | synonymous_variant | Exon 11 of 18 | NM_004333.6 | ENSP00000493543.1 |
Frequencies
GnomAD3 genomes AF: 0.000658 AC: 100AN: 152024Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.000561 AC: 141AN: 251408 AF XY: 0.000559 show subpopulations
GnomAD4 exome AF: 0.000991 AC: 1448AN: 1461708Hom.: 1 Cov.: 30 AF XY: 0.000942 AC XY: 685AN XY: 727182 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000657 AC: 100AN: 152142Hom.: 0 Cov.: 32 AF XY: 0.000645 AC XY: 48AN XY: 74382 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Benign:4
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Variant summary: The BRAF c.1332G>A variant involves the alteration of non-conserved nucleotide, resulting in synonymous amino acid change. It is predicted to have no significant effect on splicing by 4/5 splice prediction tools. The variant is found in ExAC with an allele frequency of 0.00058 (71/121302 chromosomes), predominantly in European (Non-Finnish) subpopulation with an allele frequency of 0.00095 (64/66708 chromosomes). This frequency is about 384 times the estimated maximal allele frequency of a pathogenic variant in BRAF gene (2.5e10-6), strongly supporting that this is likely a benign variant found mainly in European (Non-Finnish) subpopulation. Multiple clinical laboratories/reputable databases have classified this variant as benign/likely benign. Taken together, this variant is classified as Benign. -
BRAF: BP4, BP7 -
not specified Benign:3
Arg444Arg in exon 11 of BRAF: This variant is not expected to have clinical sign ificance because it does not alter an amino acid residue, is not located within the splice consensus sequence, and it has been identified in 0.16% (14/8600) of European American chromosomes from a broad population by the NHLBI Exome Sequenc ing Project (http://evs.gs.washington.edu/EVS/; dbSNP rs56101602) -
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RASopathy Benign:2
The filtering allele frequency of the c.1332G>A (p.Arg444=) variant in the BRAF gene is 0.077% (64/66708) of European chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen RASopathy Expert Panel (BA1; PMID:29493581) -
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LEOPARD syndrome 3 Benign:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Cardiovascular phenotype Benign:1
This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Noonan syndrome and Noonan-related syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at