chr7-140924612-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_001374258.1(BRAF):c.92C>T(p.Ala31Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000916 in 1,527,748 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A31G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000094 ( 0 hom. )

Consequence

BRAF
NM_001374258.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.734

Publications

8 publications found

Variant links:

Genes affected

BRAF (HGNC:1097): (B-Raf proto-oncogene, serine/threonine kinase) This gene encodes a protein belonging to the RAF family of serine/threonine protein kinases. This protein plays a role in regulating the MAP kinase/ERK signaling pathway, which affects cell division, differentiation, and secretion. Mutations in this gene, most commonly the V600E mutation, are the most frequently identified cancer-causing mutations in melanoma, and have been identified in various other cancers as well, including non-Hodgkin lymphoma, colorectal cancer, thyroid carcinoma, non-small cell lung carcinoma, hairy cell leukemia and adenocarcinoma of lung. Mutations in this gene are also associated with cardiofaciocutaneous, Noonan, and Costello syndromes, which exhibit overlapping phenotypes. A pseudogene of this gene has been identified on the X chromosome. [provided by RefSeq, Aug 2017]

BRAF Gene-Disease associations (from GenCC):

cardiofaciocutaneous syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
cardiofaciocutaneous syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics, G2P, Genomics England PanelApp
LEOPARD syndrome 3
Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
Noonan syndrome 7
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P, Ambry Genetics, Genomics England PanelApp
Noonan syndrome
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
Noonan syndrome with multiple lentigines
Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: ClinGen, Orphanet
anaplastic astrocytoma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
Costello syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

BRAF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PP2

Missense variant in the BRAF gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 139 curated pathogenic missense variants (we use a threshold of 10). The gene has 21 curated benign missense variants. Gene score misZ: 3.7208 (above the threshold of 3.09). Trascript score misZ: 4.9008 (above the threshold of 3.09). GenCC associations: The gene is linked to cardiofaciocutaneous syndrome, Noonan syndrome with multiple lentigines, Noonan syndrome, cardiofaciocutaneous syndrome 1, Noonan syndrome 7, LEOPARD syndrome 3, anaplastic astrocytoma, Costello syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.17670408).

BS2

High AC in GnomAdExome4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRAF	NM_001374258.1 link	c.92C>T	p.Ala31Val	missense_variant	Exon 1 of 20	ENST00000644969.2	NP_001361187.1
BRAF	NM_004333.6 link	c.92C>T	p.Ala31Val	missense_variant	Exon 1 of 18	ENST00000646891.2	NP_004324.2	P15056

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BRAF	ENST00000644969.2 link	c.92C>T	p.Ala31Val	missense_variant	Exon 1 of 20		NM_001374258.1	ENSP00000496776.1		A0A2R8Y8E0
BRAF	ENST00000646891.2 link	c.92C>T	p.Ala31Val	missense_variant	Exon 1 of 18		NM_004333.6	ENSP00000493543.1		P15056

Frequencies

GnomAD3 genomes

AF:

0.00000661

AC:

AN:

151340

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000944

AC:

AN:

1376408

Hom.:

Cov.:

AF XY:

0.0000103

AC XY:

AN XY:

679152

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31010

American (AMR)

AF:

0.00

AC:

AN:

35248

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25000

East Asian (EAS)

AF:

0.0000282

AC:

AN:

35480

South Asian (SAS)

AF:

0.00

AC:

AN:

78964

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33364

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4114

European-Non Finnish (NFE)

AF:

0.0000112

AC:

AN:

1075830

Other (OTH)

AF:

0.00

AC:

AN:

57398

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000661

AC:

AN:

151340

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73922

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41220

American (AMR)

AF:

0.00

AC:

AN:

15250

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5044

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10510

Middle Eastern (MID)

AF:

0.00

AC:

AN:

310

European-Non Finnish (NFE)

AF:

0.0000148

AC:

AN:

67730

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

RASopathy

Uncertain:1

Nov 08, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 31 of the BRAF protein (p.Ala31Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with BRAF-related conditions. ClinVar contains an entry for this variant (Variation ID: 1388369). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BRAF protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.028

BayesDel_noAF

Benign

-0.20

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

.;.;T;.;.

Eigen

Benign

-0.48

Eigen_PC

Benign

-0.35

FATHMM_MKL

Benign

0.45

LIST_S2

Benign

0.45

T;T;T;T;T

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.18

T;T;T;T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.0

.;.;N;.;.

PhyloP100

0.73

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-0.17

.;.;.;N;.

REVEL

Benign

0.18

Sift

Benign

0.26

.;.;.;T;.

Sift4G

Benign

0.29

.;.;.;T;.

Polyphen

0.0

.;.;B;.;.

Vest4

0.37

MutPred

0.19

Loss of glycosylation at S36 (P = 0.1643);Loss of glycosylation at S36 (P = 0.1643);Loss of glycosylation at S36 (P = 0.1643);Loss of glycosylation at S36 (P = 0.1643);Loss of glycosylation at S36 (P = 0.1643);

MVP

0.64

MPC

0.94

ClinPred

0.20

GERP RS

1.5

PromoterAI

0.070

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.070

gMVP

0.12

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over