rs776014448

Variant names:

• chr7-116699934-A-G
• rs776014448
• NM_000245.4:c.850A>G

Your query was ambiguous. Multiple possible variants found:

• chr7-116699934-A-G
• chr7-116699934-A-T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP6

The NM_000245.4(MET):​c.850A>G​(p.Ile284Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,792 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I284M) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: MET NM_000245.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:2
• Conservation: PhyloP100: 1.00
• Publications: 2 publications found

Genes affected

MET (HGNC:7029): (MET proto-oncogene, receptor tyrosine kinase) This gene encodes a member of the receptor tyrosine kinase family of proteins and the product of the proto-oncogene MET. The encoded preproprotein is proteolytically processed to generate alpha and beta subunits that are linked via disulfide bonds to form the mature receptor. Further processing of the beta subunit results in the formation of the M10 peptide, which has been shown to reduce lung fibrosis. Binding of its ligand, hepatocyte growth factor, induces dimerization and activation of the receptor, which plays a role in cellular survival, embryogenesis, and cellular migration and invasion. Mutations in this gene are associated with papillary renal cell carcinoma, hepatocellular carcinoma, and various head and neck cancers. Amplification and overexpression of this gene are also associated with multiple human cancers. [provided by RefSeq, May 2016]

COMETT (HGNC:51196): (cytosolic oncogenic antisense to MET transcript) This gene encodes a natural antisense transcript highly expressed in papillary thyroid carcinomas harboring BRAF V600E mutation or RET gene rearrangements. This lncRNA induces the downstream MAPK pathway and is part of a co-expression network including different oncogenes belonging to the MAPK and PI3H/AKT pathways. In thyroid carcinomas, this gene has oncogenic properties associated with increased proliferation and drug resistance. [provided by RefSeq, Jan 2020]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.009616107).
• BP6: Variant 7-116699934-A-G is Benign according to our data. Variant chr7-116699934-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 524884.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000245.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MET	NM_000245.4	MANE Select	c.850A>G	p.Ile284Val	missense	Exon 2 of 21	NP_000236.2
	MET	NM_001127500.3		c.850A>G	p.Ile284Val	missense	Exon 2 of 21	NP_001120972.1
	MET	NM_001324401.3		c.850A>G	p.Ile284Val	missense	Exon 2 of 12	NP_001311330.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MET	ENST00000397752.8	TSL:1 MANE Select	c.850A>G	p.Ile284Val	missense	Exon 2 of 21	ENSP00000380860.3
	MET	ENST00000318493.11	TSL:1	c.850A>G	p.Ile284Val	missense	Exon 2 of 21	ENSP00000317272.6
	MET	ENST00000436117.3	TSL:1	n.850A>G		non_coding_transcript_exon	Exon 2 of 20	ENSP00000410980.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 248956 AF XY: 0.00000741

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461792 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727202

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111956

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000166 AC: 2

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	1	-	not provided (1)
-	-	1	Papillary renal cell carcinoma type 1 (1)
-	1	-	Papillary renal cell carcinoma type 1;C2239176:Hepatocellular carcinoma;C4084709:Autosomal recessive nonsyndromic hearing loss 97;C4085248:Osteofibrous dysplasia;C5774205:Arthrogryposis, distal, IIa 11 (1)
-	1	-	Renal cell carcinoma (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.060
BayesDel_addAF	Benign	-0.48	T
BayesDel_noAF	Benign	-0.76
CADD	Benign	2.0
DANN	Benign	0.27
DEOGEN2	Benign	0.22	T
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.075	N
LIST_S2	Benign	0.33	T
M_CAP	Benign	0.0024	T
MetaRNN	Benign	0.0096	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	-1.6	N
PhyloP100		1.0
PrimateAI	Benign	0.24	T
PROVEAN	Benign	0.34	N
REVEL	Benign	0.032
Sift	Benign	0.59	T
Sift4G	Benign	0.41	T
Polyphen		0.0	B
Vest4		0.039
MutPred		0.39		Loss of sheet (P = 0.1398)
MVP		0.13
MPC		0.21
ClinPred		0.020	T
GERP RS		1.2
Varity_R		0.044
gMVP		0.16
Mutation Taster		=84/16	polymorphism

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

Other links and lift over

dbSNP: rs776014448; hg19: chr7-116339988;