rs71645959

Variant names:

• chr7-140787603-G-A
• rs71645959
• NM_001374258.1:c.1141-19C>T

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BS1 BS2

The NM_004333.6(BRAF):​c.1141-19C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000598 in 1,598,070 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0032 (3 hom., cov: 32)
  • Exomes 𝑓: 0.00032 (2 hom.)
• Consequence: BRAF NM_004333.6 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 0.257

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]

ENSG00000289788 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.28).
• BP6: Variant 7-140787603-G-A is Benign according to our data. Variant chr7-140787603-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 136531.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-140787603-G-A is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00325 (494/152206) while in subpopulation AFR AF= 0.0114 (473/41528). AF 95% confidence interval is 0.0105. There are 3 homozygotes in gnomad4. There are 239 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 494 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRAF	NM_001374258.1	c.1141-19C>T		intron_variant	Intron 8 of 19	ENST00000644969.2	NP_001361187.1
BRAF	NM_004333.6	c.1141-19C>T		intron_variant	Intron 8 of 17	ENST00000646891.2	NP_004324.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BRAF	ENST00000644969.2	c.1141-19C>T		intron_variant	Intron 8 of 19		NM_001374258.1	ENSP00000496776.1
BRAF	ENST00000646891.2	c.1141-19C>T		intron_variant	Intron 8 of 17		NM_004333.6	ENSP00000493543.1

Frequencies

GnomAD3 genomes AF: 0.00325 AC: 494 AN: 152086 Hom.: 3 Cov.: 32

Gnomad AFR AF: 0.0114

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000917

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: 0.0000294

Gnomad OTH AF: 0.00239

GnomAD3 exomes AF: 0.000792 AC: 199 AN: 251162 Hom.: 0 AF XY: 0.000597 AC XY: 81 AN XY: 135776

Gnomad AFR exome AF: 0.0108

Gnomad AMR exome AF: 0.000521

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000320 AC: 462 AN: 1445864 Hom.: 2 Cov.: 28 AF XY: 0.000273 AC XY: 197 AN XY: 720398

Gnomad4 AFR exome AF: 0.0117

Gnomad4 AMR exome AF: 0.000515

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000117

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000820

Gnomad4 OTH exome AF: 0.000668

GnomAD4 genome AF: 0.00325 AC: 494 AN: 152206 Hom.: 3 Cov.: 32 AF XY: 0.00321 AC XY: 239 AN XY: 74424

Gnomad4 AFR AF: 0.0114

Gnomad4 AMR AF: 0.000916

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00237

Alfa AF: 0.00179 Hom.: 1

Bravo AF: 0.00370

Asia WGS AF: 0.000578 AC: 2 AN: 3474

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Oct 16, 2012

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

-

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 10, 2020

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: BRAF c.1141-19C>T alters a non-conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00079 in 251162 control chromosomes. The observed variant frequency is approximately 317 fold of 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. To our knowledge, no occurrence of c.1141-19C>T in individuals affected with Noonan Syndrome and Related Conditions and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as benign. -

Lung cancer;C0346629:Colorectal cancer;C1835047:Melanoma, cutaneous malignant, susceptibility to, 1;C3150970:Noonan syndrome 7;C3150971:LEOPARD syndrome 3;C4551602:Noonan syndrome 1;CN029449:Cardiofaciocutaneous syndrome 1 Benign:1

Aug 04, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

RASopathy Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.28
CADD	Benign	17
DANN	Benign	0.82
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

Other links and lift over

dbSNP: rs71645959; hg19: chr7-140487403;