chr7-116763253-T-G

Variant names:

• chr7-116763253-T-G
• rs118057172
• NM_000245.4:c.2568T>G

Variant summary

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

The NM_000245.4(MET):​c.2568T>G​(p.Asn856Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,474 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. N856N) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MET NM_000245.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.698

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MET	NM_000245.4	c.2568T>G	p.Asn856Lys	missense_variant	Exon 11 of 21	ENST00000397752.8	NP_000236.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MET	ENST00000397752.8	c.2568T>G	p.Asn856Lys	missense_variant	Exon 11 of 21	1	NM_000245.4	ENSP00000380860.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000402 AC: 1 AN: 248630 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 134868

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000291

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461474 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727034

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000199 Hom.: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Renal cell carcinoma Uncertain:1

Jun 11, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is present in population databases (no rsID available, gnomAD 0.003%). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt MET protein function. ClinVar contains an entry for this variant (Variation ID: 524860). This variant has not been reported in the literature in individuals affected with MET-related conditions. This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 874 of the MET protein (p.Asn874Lys). -

not provided Uncertain:1

Feb 20, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Papillary renal cell carcinoma type 1 Uncertain:1

Jul 02, 2018

Mendelics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome Uncertain:1

May 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.N874K variant (also known as c.2622T>G), located in coding exon 10 of the MET gene, results from a T to G substitution at nucleotide position 2622. The asparagine at codon 874 is replaced by lysine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.32
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.36	T;.;.
Eigen	Uncertain	0.29
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.92	D;D;D
M_CAP	Benign	0.057	D
MetaRNN	Uncertain	0.47	T;T;T
MetaSVM	Benign	-0.31	T
MutationAssessor	Benign	0.81	L;.;.
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-1.2	N;N;N
REVEL	Uncertain	0.37
Sift	Benign	0.088	T;T;D
Sift4G	Benign	0.078	T;T;D
Polyphen		0.90	P;P;.
Vest4		0.78
MutPred		0.62		Loss of sheet (P = 0.0126);.;.;
MVP		0.44
MPC		0.96
ClinPred		0.71	D
GERP RS		4.6
Varity_R		0.24
gMVP		0.73

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

Publications

LitVar

Other links and lift over

dbSNP: rs118057172; hg19: chr7-116403307;