rs869025606

Positions:

• chr7-140781609-A-C

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1 PM2 PP2 PP3_Strong PP5_Moderate

The NM_004333.6(BRAF):​c.1399T>G​(p.Ser467Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRAF NM_004333.6 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1 O:1
• Conservation: PhyloP100: 9.30

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 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PM1: In a domain Protein kinase (size 260) in uniprot entity BRAF_HUMAN there are 21 pathogenic changes around while only 1 benign (95%) in NM_004333.6
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), BRAF. . Gene score misZ 3.7208 (greater than the threshold 3.09). Trascript score misZ 4.9447 (greater than threshold 3.09). GenCC has associacion of gene with LEOPARD syndrome 3, anaplastic astrocytoma, Noonan syndrome with multiple lentigines, cardiofaciocutaneous syndrome 1, Noonan syndrome, cardiofaciocutaneous syndrome, Costello syndrome, Noonan syndrome 7.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.967
• PP5: Variant 7-140781609-A-C is Pathogenic according to our data. Variant chr7-140781609-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 223138.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRAF	NM_001374258.1	c.1519T>G	p.Ser507Ala	missense_variant	12/20	ENST00000644969.2	NP_001361187.1
BRAF	NM_004333.6	c.1399T>G	p.Ser467Ala	missense_variant	11/18	ENST00000646891.2	NP_004324.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRAF	ENST00000644969.2	c.1519T>G	p.Ser507Ala	missense_variant	12/20		NM_001374258.1	ENSP00000496776.1
BRAF	ENST00000646891.2	c.1399T>G	p.Ser467Ala	missense_variant	11/18		NM_004333.6	ENSP00000493543.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Apr 07, 2016

The S467A variant in the BRAF gene has been published previously in association with cardio-facio-cutaneous syndrome (Rodriguez-Viciana et al., 2006). The variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. BRAF has a low rate of benign missense variation and missense variants are a common mechanism of disease in this gene. S467A is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position within the ATP-binding domain that is conserved across species. In addition, in vitro studies have shown that S467A results in higher levels of MEK and ERK phosphorylation. Missense variants in nearby residues (G464R/V, F468S, G469R/E, T470P) have been reported in the Human Gene Mutation Database in association with cardio-facio-cutaneous syndrome (Stenson et al., 2014), supporting the functional importance of this region of the protein. Therefore, we interpret S467A to be a pathogenic variant. -

Cardio-facio-cutaneous syndrome Other:1

not provided, no classification provided

literature only

GeneReviews

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.89
BayesDel_addAF	Pathogenic	0.48	D
BayesDel_noAF	Pathogenic	0.44
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.81	.;.;D;.
Eigen	Benign	0.055
Eigen_PC	Uncertain	0.28
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D;D;D;D
M_CAP	Pathogenic	0.37	D
MetaRNN	Pathogenic	0.97	D;D;D;D
MetaSVM	Uncertain	0.64	D
MutationAssessor	Benign	0.11	.;.;N;.
PrimateAI	Pathogenic	0.82	D
REVEL	Pathogenic	0.82
Polyphen		0.0	.;.;B;.
MutPred		0.91		Gain of sheet (P = 0.0827);.;Gain of sheet (P = 0.0827);.;
MVP		1.0
MPC		1.1
ClinPred		0.99	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.94
gMVP		0.60

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

LitVar

Other links and lift over

dbSNP: rs869025606; hg19: chr7-140481409;