7-140924722-G-A

Position:

chr7-140924722-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001374258.1(BRAF):c.-19C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00285 in 845,450 control chromosomes in the GnomAD database, including 48 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.010 ( 31 hom., cov: 31)

Exomes 𝑓: 0.0012 ( 17 hom. )

Consequence

BRAF
NM_001374258.1 5_prime_UTR

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 0.171

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

BP6

Variant 7-140924722-G-A is Benign according to our data. Variant chr7-140924722-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 41445.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0105 (1591/151548) while in subpopulation AFR AF= 0.0356 (1475/41378). AF 95% confidence interval is 0.0341. There are 31 homozygotes in gnomad4. There are 703 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 1591 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRAF	NM_001374258.1 linkuse as main transcript	c.-19C>T		5_prime_UTR_variant	1/20	ENST00000644969.2	NP_001361187.1
BRAF	NM_004333.6 linkuse as main transcript	c.-19C>T		5_prime_UTR_variant	1/18	ENST00000646891.2	NP_004324.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRAF	ENST00000644969.2 linkuse as main transcript	c.-19C>T		5_prime_UTR_variant	1/20		NM_001374258.1	ENSP00000496776
BRAF	ENST00000646891.2 linkuse as main transcript	c.-19C>T		5_prime_UTR_variant	1/18		NM_004333.6	ENSP00000493543	P4

Frequencies

GnomAD3 genomes

AF:

0.0105

AC:

1584

AN:

151442

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0356

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00558

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00860

GnomAD3 exomes

AF:

0.00114

AC:

AN:

86066

Hom.:

AF XY:

0.000900

AC XY:

AN XY:

48864

show subpopulations

Gnomad AFR exome

AF:

0.0427

Gnomad AMR exome

AF:

0.00252

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000112

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000192

Gnomad OTH exome

AF:

0.00116

GnomAD4 exome

AF:

0.00118

AC:

821

AN:

693902

Hom.:

Cov.:

AF XY:

0.00103

AC XY:

375

AN XY:

364762

show subpopulations

Gnomad4 AFR exome

AF:

0.0399

Gnomad4 AMR exome

AF:

0.00314

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000163

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000676

Gnomad4 OTH exome

AF:

0.00300

GnomAD4 genome

AF:

0.0105

AC:

1591

AN:

151548

Hom.:

Cov.:

AF XY:

0.00950

AC XY:

703

AN XY:

74032

show subpopulations

Gnomad4 AFR

AF:

0.0356

Gnomad4 AMR

AF:

0.00558

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00851

Alfa

AF:

0.00560

Hom.:

Bravo

AF:

0.0120

Asia WGS

AF:

0.00319

AC:

AN:

3460

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:5

Benign, no assertion criteria provided	clinical testing	Greenwood Genetic Center Diagnostic Laboratories, Greenwood Genetic Center	Jan 15, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 18, 2013	- -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Nov 25, 2019	Variant summary: BRAF c.-19C>T is located in the untranslated mRNA region upstream of the initiation codon. The variant allele was found at a frequency of 0.0011 in 86066 control chromosomes in the gnomAD database, including 1 homozygotes. The observed variant frequency is approximately 455-folds over the estimated maximal expected allele frequency for a pathogenic variant in BRAF causing Noonan Syndrome and Related Conditions phenotype (2.5e-06), strongly suggesting that the variant is benign. Two ClinVar submissions (evaluation after 2014) cites the variant once as likely benign and once as benign. Based on the evidence outlined above, the variant was classified as benign. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jun 01, 2011	-19C>T in the 5'UTR of BRAF: This variant has been reported in dbSNP in 2.3% (1/ 44) Hispanic chromosomes and 4.2% (1/24) Black chromosomes (rs71645935). This va riant is located in the 5'UTR and variants in regulatory regions could have an e ffect on transcriptional or translational efficiency. However, no variants in th is region of BRAF have been found to be pathogenic in individuals with Noonan sp ectrum disorders.Therefore, this variant is not expected to have clinical signif icance. -

Noonan syndrome 7

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Jan 03, 2023

- -

LEOPARD syndrome 3

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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. -

RASopathy

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 02, 2012

The variant is found in NOONAN panel(s). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

DANN

Benign

0.85

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over