Variant 3-52229163-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_007284.4(TWF2):c.921C>G(p.Phe307Leu) 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 1,460,566 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TWF2
NM_007284.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.34

Variant links:

Genes affected

TWF2 (HGNC:9621): (twinfilin actin binding protein 2) The protein encoded by this gene was identified by its interaction with the catalytic domain of protein kinase C-zeta. The encoded protein contains an actin-binding site and an ATP-binding site. It is most closely related to twinfilin (PTK9), a conserved actin monomer-binding protein. [provided by RefSeq, Jul 2008]

TWF2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TWF2	NM_007284.4 linkuse as main transcript	c.921C>G	p.Phe307Leu	missense_variant	9/9	ENST00000305533.10	NP_009215.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TWF2	ENST00000305533.10 linkuse as main transcript	c.921C>G	p.Phe307Leu	missense_variant	9/9	1	NM_007284.4	ENSP00000303908	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248500

Hom.:

AF XY:

0.00000743

AC XY:

AN XY:

134620

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460566

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726642

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 06, 2023

The c.921C>G (p.F307L) alteration is located in exon 9 (coding exon 9) of the TWF2 gene. This alteration results from a C to G substitution at nucleotide position 921, causing the phenylalanine (F) at amino acid position 307 to be replaced by a leucine (L). 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

Pathogenic

0.98

BayesDel_addAF

Uncertain

0.059

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.43

Eigen

Uncertain

0.27

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.032

MetaRNN

Uncertain

0.54

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.6

MutationTaster

Benign

0.99

D;D

PROVEAN

Pathogenic

-5.0

REVEL

Benign

0.22

Sift

Uncertain

0.0030

Sift4G

Benign

0.19

Polyphen

0.43

Vest4

0.58

MutPred

0.56

Loss of catalytic residue at F307 (P = 0.0168);

MVP

0.47

MPC

0.93

ClinPred

0.98

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.54

gMVP

0.61

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