Variant 3-44242177-G-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001145030.2(TOPAZ1):c.124G>T(p.Gly42Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000582 in 1,545,260 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000043 ( 0 hom. )

Consequence

TOPAZ1
NM_001145030.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.358

Variant links:

Genes affected

TOPAZ1 (HGNC:24746): (testis and ovary specific TOPAZ 1) Predicted to be involved in spermatid development and spermatocyte division. Predicted to act upstream of or within apoptotic process; ncRNA transcription; and positive regulation of meiotic cell cycle phase transition. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

TOPAZ1 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=0.28568).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TOPAZ1	NM_001145030.2 linkuse as main transcript	c.124G>T	p.Gly42Trp	missense_variant	1/20	ENST00000309765.4	NP_001138502.1	Q8N9V7
TOPAZ1	XM_011533694.3 linkuse as main transcript	c.124G>T	p.Gly42Trp	missense_variant	1/20		XP_011531996.1
TOPAZ1	XM_017006361.2 linkuse as main transcript	c.124G>T	p.Gly42Trp	missense_variant	1/18		XP_016861850.1
TOPAZ1	XM_017006362.1 linkuse as main transcript	c.124G>T	p.Gly42Trp	missense_variant	1/15		XP_016861851.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TOPAZ1	ENST00000309765.4 linkuse as main transcript	c.124G>T	p.Gly42Trp	missense_variant	1/20	5	NM_001145030.2	ENSP00000310303.4		Q8N9V7

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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

AF:

0.00000431

AC:

AN:

1393090

Hom.:

Cov.:

AF XY:

0.00000291

AC XY:

AN XY:

687228

show subpopulations

Gnomad4 AFR exome

AF:

0.000161

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:

9.28e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000724

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

Alfa

AF:

0.0000662

Hom.:

Bravo

AF:

0.0000416

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

Aug 27, 2024

The c.124G>T (p.G42W) alteration is located in exon 1 (coding exon 1) of the TOPAZ1 gene. This alteration results from a G to T substitution at nucleotide position 124, causing the glycine (G) at amino acid position 42 to be replaced by a tryptophan (W). 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

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0078

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.57

FATHMM_MKL

Benign

0.050

LIST_S2

Benign

0.54

M_CAP

Benign

0.020

MetaRNN

Benign

0.29

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-1.3

REVEL

Benign

0.049

Sift

Benign

0.031

Sift4G

Uncertain

0.020

Polyphen

1.0

Vest4

0.41

MVP

0.35

ClinPred

0.45

GERP RS

1.6

Varity_R

0.094

gMVP

0.054

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