7-116700255-G-C

Variant names:

• chr7-116700255-G-C
• rs587778443
• NM_000245.4:c.1171G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000245.4(MET):​c.1171G>C​(p.Gly391Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000689 in 1,450,924 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G391V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: MET NM_000245.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.48
• Publications: 0 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: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38793764).

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.1171G>C	p.Gly391Arg	missense	Exon 2 of 21	NP_000236.2
	MET	NM_001127500.3		c.1171G>C	p.Gly391Arg	missense	Exon 2 of 21	NP_001120972.1
	MET	NM_001324401.3		c.1171G>C	p.Gly391Arg	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.1171G>C	p.Gly391Arg	missense	Exon 2 of 21	ENSP00000380860.3
	MET	ENST00000318493.11	TSL:1	c.1171G>C	p.Gly391Arg	missense	Exon 2 of 21	ENSP00000317272.6
	MET	ENST00000436117.3	TSL:1	n.1171G>C		non_coding_transcript_exon	Exon 2 of 20	ENSP00000410980.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.89e-7 AC: 1 AN: 1450924 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 721462

African (AFR) AF: 0.00 AC: 0 AN: 32864

American (AMR) AF: 0.00 AC: 0 AN: 42386

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25708

East Asian (EAS) AF: 0.00 AC: 0 AN: 39660

South Asian (SAS) AF: 0.00 AC: 0 AN: 83736

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51012

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5722

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1109832

Other (OTH) AF: 0.00 AC: 0 AN: 60004

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Uncertain	0.048	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.26	T
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.39	T
MetaSVM	Benign	-1.2	T
MutationAssessor	Benign	1.4	L
PhyloP100		6.5
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-0.79	N
REVEL	Uncertain	0.36
Sift	Uncertain	0.012	D
Sift4G	Benign	0.33	T
Polyphen		0.99	D
Vest4		0.41
MutPred		0.63		Gain of MoRF binding (P = 0.0474)
MVP		0.41
MPC		0.32
ClinPred		0.53	D
GERP RS		6.0
Varity_R		0.54
gMVP		0.87
Mutation Taster		=40/60	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs587778443; hg19: chr7-116340309;