chr7-81702622-T-G

Position:

• chr7-81702622-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000601.6(HGF):​c.2146A>C​(p.Ile716Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000659 in 151,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: HGF NM_000601.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.13

Genes affected

HGF (HGNC:4893): (hepatocyte growth factor) This gene encodes a protein that binds to the hepatocyte growth factor receptor to regulate cell growth, cell motility and morphogenesis in numerous cell and tissue types. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate alpha and beta chains, which form the mature heterodimer. This protein is secreted by mesenchymal cells and acts as a multi-functional cytokine on cells of mainly epithelial origin. This protein also plays a role in angiogenesis, tumorogenesis, and tissue regeneration. Although the encoded protein is a member of the peptidase S1 family of serine proteases, it lacks peptidase activity. Mutations in this gene are associated with nonsyndromic hearing loss. [provided by RefSeq, Nov 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.908

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HGF	NM_000601.6	c.2146A>C	p.Ile716Leu	missense_variant	18/18	ENST00000222390.11	NP_000592.3
HGF	NM_001010932.3	c.2131A>C	p.Ile711Leu	missense_variant	18/18		NP_001010932.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HGF	ENST00000222390.11	c.2146A>C	p.Ile716Leu	missense_variant	18/18	1	NM_000601.6	ENSP00000222390.5
HGF	ENST00000457544.7	c.2131A>C	p.Ile711Leu	missense_variant	18/18	1		ENSP00000391238.2

Frequencies

GnomAD3 genomes AF: 0.00000659 AC: 1 AN: 151646 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome AF: 0.00000659 AC: 1 AN: 151646 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74052

Gnomad4 AFR AF: 0.0000242

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 13, 2022

This variant is not present in population databases (gnomAD no frequency). This sequence change replaces isoleucine with leucine at codon 716 of the HGF protein (p.Ile716Leu). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and leucine. This variant has not been reported in the literature in individuals affected with HGF-related conditions. 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available"). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.29
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Uncertain	-0.010
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.73	D;D;.
Eigen	Pathogenic	0.73
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.89	.;D;D
M_CAP	Uncertain	0.099	D
MetaRNN	Pathogenic	0.91	D;D;D
MetaSVM	Uncertain	0.77	D
MutationAssessor	Uncertain	2.4	M;M;.
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-1.6	.;N;N
REVEL	Pathogenic	0.74
Sift	Pathogenic	0.0	.;D;D
Sift4G	Pathogenic	0.0	.;D;D
Polyphen		0.92	P;P;P
Vest4		0.63, 0.73
MutPred		0.81		Loss of methylation at K714 (P = 0.0668);Loss of methylation at K714 (P = 0.0668);.;
MVP		0.81
MPC		0.59
ClinPred		0.99	D
GERP RS		5.3
Varity_R		0.81
gMVP		0.96

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: rs1480950083; hg19: chr7-81331938;