NM_000245.4:c.1477G>C

Variant names:

• chr7-116740034-G-C
• rs965319455
• NM_000245.4:c.1477G>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BS1_Supporting

The NM_000245.4(MET):​c.1477G>C​(p.Glu493Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000142 in 1,614,112 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E493K) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: MET NM_000245.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:9
• Conservation: PhyloP100: 0.620
• Publications: 1 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]

MET Gene-Disease associations (from GenCC):

• hereditary papillary renal cell carcinoma

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• papillary renal cell carcinoma

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, ClinGen
• autosomal recessive nonsyndromic hearing loss 97

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• osteofibrous dysplasia

  Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• arthrogryposis, distal, IIa 11

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen
• complex neurodevelopmental disorder

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

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

• BP4: Computational evidence support a benign effect (MetaRNN=0.08231151).
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.0000144 (21/1461844) while in subpopulation MID AF = 0.00121 (7/5768). AF 95% confidence interval is 0.000569. There are 0 homozygotes in GnomAdExome4. There are 14 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MET	NM_000245.4	MANE Select	c.1477G>C	p.Glu493Gln	missense	Exon 4 of 21	NP_000236.2
	MET	NM_001127500.3		c.1477G>C	p.Glu493Gln	missense	Exon 4 of 21	NP_001120972.1	P08581-2
	MET	NM_001324402.2		c.187G>C	p.Glu63Gln	missense	Exon 3 of 20	NP_001311331.1	B4DLF5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MET	ENST00000397752.8	TSL:1 MANE Select	c.1477G>C	p.Glu493Gln	missense	Exon 4 of 21	ENSP00000380860.3	P08581-1
	MET	ENST00000318493.11	TSL:1	c.1477G>C	p.Glu493Gln	missense	Exon 4 of 21	ENSP00000317272.6	P08581-2
	MET	ENST00000436117.3	TSL:1	n.1477G>C		non_coding_transcript_exon	Exon 4 of 20	ENSP00000410980.2	P08581-3

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152150 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000144 AC: 21 AN: 1461844 Hom.: 0 Cov.: 32 AF XY: 0.0000193 AC XY: 14 AN XY: 727226

African (AFR) AF: 0.000269 AC: 9 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39688

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00121 AC: 7 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111986

Other (OTH) AF: 0.0000497 AC: 3 AN: 60392

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152268 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74442

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000241 AC: 1 AN: 41556

American (AMR) AF: 0.00 AC: 0 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10602

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2112

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.0000264

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	4	-	not provided (4)
-	1	-	Autosomal recessive nonsyndromic hearing loss 97 (1)
-	1	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	MET-related disorder (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	0.080
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	13
DANN	Benign	0.79
DEOGEN2	Benign	0.31	T
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.57
FATHMM_MKL	Benign	0.12	N
LIST_S2	Benign	0.77	T
M_CAP	Benign	0.0044	T
MetaRNN	Benign	0.082	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.41	N
PhyloP100		0.62
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.24	N
REVEL	Benign	0.11
Sift	Benign	0.18	T
Sift4G	Benign	0.32	T
Polyphen		0.020	B
Vest4		0.10
MutPred		0.55		Gain of sheet (P = 0.0477)
MVP		0.49
MPC		0.25
ClinPred		0.059	T
GERP RS		4.0
Varity_R		0.31
gMVP		0.60
Mutation Taster		=81/19	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: rs965319455; hg19: chr7-116380088;