dbSNP rs777375118: TFPI2:p.Arg138Met (chr7-93889082-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006528.4(TFPI2):c.413G>T(p.Arg138Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,244 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

TFPI2
NM_006528.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.257

Variant links:

Genes affected

TFPI2 (HGNC:11761): (tissue factor pathway inhibitor 2) This gene encodes a member of the Kunitz-type serine proteinase inhibitor family. The protein can inhibit a variety of serine proteases including factor VIIa/tissue factor, factor Xa, plasmin, trypsin, chymotryspin and plasma kallikrein. This gene has been identified as a tumor suppressor gene in several types of cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

TFPI2 links:

GNGT1 (HGNC:4411): (G protein subunit gamma transducin 1) This gene encodes the gamma subunit of transducin, a guanine nucleotide-binding protein (G protein) that is found in rod outer segments. Transducin, also known as GMPase, mediates the activation of a cyclic GTP-specific (guanosine monophosphate) phosphodiesterase by rhodopsin. [provided by RefSeq, Jul 2016]

GNGT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.22738701).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TFPI2	NM_006528.4 link	c.413G>T	p.Arg138Met	missense_variant	Exon 3 of 5	ENST00000222543.11	NP_006519.1	P48307-1
TFPI2	NM_001271003.2 link	c.380G>T	p.Arg127Met	missense_variant	Exon 3 of 5		NP_001257932.1	P48307-2
TFPI2	NM_001271004.2 link	c.413G>T	p.Arg138Met	missense_variant	Exon 3 of 5		NP_001257933.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TFPI2	ENST00000222543.11 link	c.413G>T	p.Arg138Met	missense_variant	Exon 3 of 5	1	NM_006528.4	ENSP00000222543.5		P48307-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248328

Hom.:

AF XY:

0.00000745

AC XY:

AN XY:

134236

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459244

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725844

show subpopulations

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 06, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.413G>T (p.R138M) alteration is located in exon 3 (coding exon 3) of the TFPI2 gene. This alteration results from a G to T substitution at nucleotide position 413, causing the arginine (R) at amino acid position 138 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Benign

0.82

DEOGEN2

Benign

0.15

T;T;.;.;.;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.023

LIST_S2

Benign

0.25

.;T;T;T;T;T

M_CAP

Benign

0.062

MetaRNN

Benign

0.23

T;T;T;T;T;T

MetaSVM

Benign

-0.89

MutationAssessor

Pathogenic

3.2

M;M;.;.;.;.

PrimateAI

Benign

0.20

PROVEAN

Uncertain

-2.6

D;.;D;.;.;.

REVEL

Benign

0.16

Sift

Benign

0.10

T;.;T;.;.;.

Sift4G

Benign

0.090

T;.;T;.;.;.

Polyphen

0.27

B;B;.;.;.;.

Vest4

0.26

MutPred

0.62

Loss of disorder (P = 0.125);Loss of disorder (P = 0.125);.;Loss of disorder (P = 0.125);.;.;

MVP

0.50

MPC

0.15

ClinPred

0.18

GERP RS

-4.0

Varity_R

0.067

gMVP

0.52

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over