Variant 3-44242337-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001145030.2(TOPAZ1):c.284C>T(p.Ser95Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000528 in 1,552,184 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

TOPAZ1
NM_001145030.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.157

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 Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.049498588).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TOPAZ1	NM_001145030.2 linkuse as main transcript	c.284C>T	p.Ser95Leu	missense_variant	1/20	ENST00000309765.4	NP_001138502.1	Q8N9V7
TOPAZ1	XM_011533694.3 linkuse as main transcript	c.284C>T	p.Ser95Leu	missense_variant	1/20		XP_011531996.1
TOPAZ1	XM_017006361.2 linkuse as main transcript	c.284C>T	p.Ser95Leu	missense_variant	1/18		XP_016861850.1
TOPAZ1	XM_017006362.1 linkuse as main transcript	c.284C>T	p.Ser95Leu	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.284C>T	p.Ser95Leu	missense_variant	1/20	5	NM_001145030.2	ENSP00000310303.4		Q8N9V7

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000699

AC:

AN:

157342

Hom.:

AF XY:

0.0000964

AC XY:

AN XY:

82986

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:

0.000439

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000165

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000550

AC:

AN:

1399978

Hom.:

Cov.:

AF XY:

0.0000637

AC XY:

AN XY:

690460

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:

0.000669

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000204

Gnomad4 OTH exome

AF:

0.0000344

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000124

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000739

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

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

Jun 07, 2023

The c.284C>T (p.S95L) alteration is located in exon 1 (coding exon 1) of the TOPAZ1 gene. This alteration results from a C to T substitution at nucleotide position 284, causing the serine (S) at amino acid position 95 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

Benign

0.10

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.65

CADD

Benign

6.3

DANN

Uncertain

0.97

DEOGEN2

Benign

0.0044

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.029

LIST_S2

Benign

0.45

M_CAP

Benign

0.0051

MetaRNN

Benign

0.049

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.46

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.32

REVEL

Benign

0.052

Sift

Uncertain

0.015

Sift4G

Benign

0.45

Polyphen

0.18

Vest4

0.091

MVP

0.030

ClinPred

0.029

GERP RS

0.32

Varity_R

0.068

gMVP

0.043

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