NM_001374258.1:c.1863T>C

Variant names:

• chr7-140753392-A-G
• rs397516895
• NM_001374258.1:c.1863T>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001374258.1(BRAF):​c.1863T>C​(p.Asn621Asn) variant causes a splice region, synonymous change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRAF NM_001374258.1 splice_region, synonymous
• Scores: Splicing: ADA: 0.5878
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.00

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.37).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRAF	NM_001374258.1	c.1863T>C	p.Asn621Asn	splice_region_variant, synonymous_variant	Exon 16 of 20	ENST00000644969.2	NP_001361187.1
BRAF	NM_004333.6	c.1743T>C	p.Asn581Asn	splice_region_variant, synonymous_variant	Exon 15 of 18	ENST00000646891.2	NP_004324.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BRAF	ENST00000644969.2	c.1863T>C	p.Asn621Asn	splice_region_variant, synonymous_variant	Exon 16 of 20		NM_001374258.1	ENSP00000496776.1
BRAF	ENST00000646891.2	c.1743T>C	p.Asn581Asn	splice_region_variant, synonymous_variant	Exon 15 of 18		NM_004333.6	ENSP00000493543.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 25

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.37
CADD	Benign	15
DANN	Benign	0.90
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.59
dbscSNV1_RF	Benign	0.31
SpliceAI score (max)		0.050		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: rs397516895; hg19: chr7-140453192;