chr3-12158719-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_003256.4(TIMP4):c.122T>C(p.Ile41Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000214 in 1,610,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

TIMP4
NM_003256.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.46

Variant links:

Genes affected

TIMP4 (HGNC:11823): (TIMP metallopeptidase inhibitor 4) This gene belongs to the TIMP gene family. The proteins encoded by this gene family are inhibitors of the matrix metalloproteinases, a group of peptidases involved in degradation of the extracellular matrix. The secreted, netrin domain-containing protein encoded by this gene is involved in regulation of platelet aggregation and recruitment and may play role in hormonal regulation and endometrial tissue remodeling. [provided by RefSeq, Jul 2008]

TIMP4 links:

SYN2 (HGNC:11495): (synapsin II) This gene is a member of the synapsin gene family. Synapsins encode neuronal phosphoproteins which associate with the cytoplasmic surface of synaptic vesicles. Family members are characterized by common protein domains, and they are implicated in synaptogenesis and the modulation of neurotransmitter release, suggesting a potential role in several neuropsychiatric diseases. This member of the synapsin family encodes a neuron-specific phosphoprotein that selectively binds to small synaptic vesicles in the presynaptic nerve terminal. Polymorphisms in this gene are associated with abnormal presynaptic function and related neuronal disorders, including autism, epilepsy, bipolar disorder and schizophrenia. Alternative splicing of this gene results in multiple transcript variants. The tissue inhibitor of metalloproteinase 4 gene is located within an intron of this gene and is transcribed in the opposite direction. [provided by RefSeq, Feb 2014]

SYN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.39776528).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TIMP4	NM_003256.4 link	c.122T>C	p.Ile41Thr	missense_variant	Exon 1 of 5	ENST00000287814.5	NP_003247.1	Q99727
SYN2	NM_133625.6 link	c.775-2827A>G		intron_variant	Intron 5 of 12	ENST00000621198.5	NP_598328.1	Q92777-1Q86VA8B3KRB3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TIMP4	ENST00000287814.5 link	c.122T>C	p.Ile41Thr	missense_variant	Exon 1 of 5	1	NM_003256.4	ENSP00000287814.4		Q99727
SYN2	ENST00000621198.5 link	c.775-2827A>G		intron_variant	Intron 5 of 12	1	NM_133625.6	ENSP00000480050.1		Q92777-1

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152232

Hom.:

Cov.:

show subpopulations

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:

0.00

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000826

AC:

AN:

242114

Hom.:

AF XY:

0.0000679

AC XY:

AN XY:

132504

show subpopulations

Gnomad AFR exome

AF:

0.0000662

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000518

Gnomad NFE exome

AF:

0.000147

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.000223

AC:

325

AN:

1457952

Hom.:

Cov.:

AF XY:

0.000192

AC XY:

139

AN XY:

725514

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000800

Gnomad4 NFE exome

AF:

0.000273

Gnomad4 OTH exome

AF:

0.000249

GnomAD4 genome

AF:

0.000125

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.000250

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000271

Hom.:

Bravo

AF:

0.000106

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000497

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 13, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.122T>C (p.I41T) alteration is located in exon 1 (coding exon 1) of the TIMP4 gene. This alteration results from a T to C substitution at nucleotide position 122, causing the isoleucine (I) at amino acid position 41 to be replaced by a threonine (T). 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

0.57

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.15

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.67

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.61

M_CAP

Pathogenic

0.30

MetaRNN

Benign

0.40

MetaSVM

Benign

-0.29

MutationAssessor

Benign

0.69

PrimateAI

Benign

0.48

PROVEAN

Benign

-1.8

REVEL

Uncertain

0.39

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

0.0050

Vest4

0.26

MVP

0.63

MPC

0.081

ClinPred

0.15

GERP RS

3.5

Varity_R

0.29

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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