rs780556975

Variant names:

• chr7-140808973-G-A
• rs780556975
• NM_001374258.1:c.527C>T

Your query was ambiguous. Multiple possible variants found:

• chr7-140808973-G-A
• chr7-140808973-G-C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_004333.6(BRAF):​c.527C>T​(p.Thr176Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,558 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: BRAF NM_004333.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.99
• Publications: 4 publications found

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: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• LEOPARD syndrome 3

  Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• Noonan syndrome 7

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp, Ambry Genetics
• 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
• Noonan syndrome-like disorder with loose anagen hair

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• 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: 4.9447 (above the threshold of 3.09). GenCC associations: The gene is linked to LEOPARD syndrome 3, Costello syndrome, Noonan syndrome 7, Noonan syndrome-like disorder with loose anagen hair, cardiofaciocutaneous syndrome 1, cardiofaciocutaneous syndrome, Noonan syndrome with multiple lentigines, Noonan syndrome, anaplastic astrocytoma.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.847

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004333.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAF	NM_001374258.1	MANE Plus Clinical	c.527C>T	p.Thr176Ile	missense	Exon 4 of 20	NP_001361187.1	A0A2R8Y8E0
	BRAF	NM_004333.6	MANE Select	c.527C>T	p.Thr176Ile	missense	Exon 4 of 18	NP_004324.2
	BRAF	NM_001374244.1		c.527C>T	p.Thr176Ile	missense	Exon 4 of 19	NP_001361173.1	A0A2U3TZI2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAF	ENST00000644969.2	MANE Plus Clinical	c.527C>T	p.Thr176Ile	missense	Exon 4 of 20	ENSP00000496776.1	A0A2R8Y8E0
	BRAF	ENST00000646891.2	MANE Select	c.527C>T	p.Thr176Ile	missense	Exon 4 of 18	ENSP00000493543.1	P15056
	BRAF	ENST00000288602.11	TSL:1	c.527C>T	p.Thr176Ile	missense	Exon 4 of 19	ENSP00000288602.7	A0A2U3TZI2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251076 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000881

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460558 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726666

African (AFR) AF: 0.00 AC: 0 AN: 33442

American (AMR) AF: 0.00 AC: 0 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39610

South Asian (SAS) AF: 0.00 AC: 0 AN: 86228

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53266

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5584

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111252

Other (OTH) AF: 0.00 AC: 0 AN: 60348

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.22
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.69	D
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.80	T
M_CAP	Uncertain	0.13	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Uncertain	0.21	D
MutationAssessor	Benign	1.4	L
PhyloP100		10
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-3.8	D
REVEL	Pathogenic	0.74
Sift	Uncertain	0.0060	D
Sift4G	Uncertain	0.016	D
Polyphen		0.95	P
Vest4		0.71
MutPred		0.65		Gain of helix (P = 0.0199)
MVP		0.91
MPC		1.9
ClinPred		0.96	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.69
gMVP		0.95
Mutation Taster		=14/86	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.18		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs780556975; hg19: chr7-140508773;