7-116795732-A-G

Position:

• chr7-116795732-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The ENST00000397752.8(MET):​c.3876A>G​(p.Ile1292Met) 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 1,461,880 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1292T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MET ENST00000397752.8 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.57

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 4 ACMG points.

• PM1: In a domain Protein kinase (size 267) in uniprot entity MET_HUMAN there are 42 pathogenic changes around while only 14 benign (75%) in ENST00000397752.8
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MET	NM_000245.4	c.3876A>G	p.Ile1292Met	missense_variant	20/21	ENST00000397752.8	NP_000236.2
MET	NM_001127500.3	c.3930A>G	p.Ile1310Met	missense_variant	20/21		NP_001120972.1
MET	NM_001324402.2	c.2586A>G	p.Ile862Met	missense_variant	19/20		NP_001311331.1
MET	XM_011516223.2	c.3933A>G	p.Ile1311Met	missense_variant	21/22		XP_011514525.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MET	ENST00000397752.8	c.3876A>G	p.Ile1292Met	missense_variant	20/21	1	NM_000245.4	ENSP00000380860	P3
MET	ENST00000318493.11	c.3930A>G	p.Ile1310Met	missense_variant	20/21	1		ENSP00000317272	A2
MET	ENST00000436117.3	c.*1481A>G		3_prime_UTR_variant, NMD_transcript_variant	19/20	1		ENSP00000410980

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249498 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135356

Gnomad AFR exome AF: 0.0000646

Gnomad AMR exome AF: 0.00

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: 1461880 Hom.: 0 Cov.: 61 AF XY: 0.00000138 AC XY: 1 AN XY: 727244

Gnomad4 AFR exome AF: 0.0000299

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: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Renal cell carcinoma Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 09, 2023

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: 188064). This variant has not been reported in the literature in individuals affected with MET-related conditions. This variant is present in population databases (rs786204044, gnomAD 0.007%). This sequence change replaces isoleucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1310 of the MET protein (p.Ile1310Met). -

Hereditary cancer-predisposing syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 16, 2023

The p.I1310M variant (also known as c.3930A>G), located in coding exon 19 of the MET gene, results from an A to G substitution at nucleotide position 3930. The isoleucine at codon 1310 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious 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	Benign	0.23
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Pathogenic	0.16
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.65	D;.
Eigen	Uncertain	0.24
Eigen_PC	Benign	0.17
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.73	D;D
MetaSVM	Uncertain	-0.0071	T
MutationAssessor	Benign	1.1	L;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-1.4	N;N
REVEL	Pathogenic	0.68
Sift	Uncertain	0.0010	D;D
Sift4G	Uncertain	0.056	T;T
Polyphen		1.0	D;P
Vest4		0.84
MutPred		0.69		Loss of catalytic residue at L1297 (P = 0.0546);.;
MVP		0.88
MPC		1.9
ClinPred		0.52	D
GERP RS		0.46
Varity_R		0.89
gMVP		0.88

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: rs786204044; hg19: chr7-116435786;