Variant 3-44243363-A-G 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.857A>G(p.Asn286Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000357 in 1,398,716 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 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: 0.0000036 ( 0 hom. )

Consequence

TOPAZ1
NM_001145030.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.370

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=0.020486712).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TOPAZ1	NM_001145030.2 linkuse as main transcript	c.857A>G	p.Asn286Ser	missense_variant	2/20	ENST00000309765.4
TOPAZ1	XM_011533694.3 linkuse as main transcript	c.857A>G	p.Asn286Ser	missense_variant	2/20
TOPAZ1	XM_017006361.2 linkuse as main transcript	c.857A>G	p.Asn286Ser	missense_variant	2/18
TOPAZ1	XM_017006362.1 linkuse as main transcript	c.857A>G	p.Asn286Ser	missense_variant	2/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TOPAZ1	ENST00000309765.4 linkuse as main transcript	c.857A>G	p.Asn286Ser	missense_variant	2/20	5	NM_001145030.2	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000642

AC:

AN:

155744

Hom.:

AF XY:

0.00

AC XY:

AN XY:

82514

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:

0.0000166

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000357

AC:

AN:

1398716

Hom.:

Cov.:

AF XY:

0.00000290

AC XY:

AN XY:

689824

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:

0.00000371

Gnomad4 OTH exome

AF:

0.0000173

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

Oct 06, 2021

The c.857A>G (p.N286S) alteration is located in exon 2 (coding exon 2) of the TOPAZ1 gene. This alteration results from a A to G substitution at nucleotide position 857, causing the asparagine (N) at amino acid position 286 to be replaced by a serine (S). 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

0.089

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.77

Cadd

Benign

0.78

Dann

Benign

0.37

DEOGEN2

Benign

0.0058

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.036

LIST_S2

Benign

0.68

M_CAP

Benign

0.0069

MetaRNN

Benign

0.020

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.4

MutationTaster

Benign

1.0

PrimateAI

Benign

0.32

PROVEAN

Benign

-1.5

REVEL

Benign

0.052

Sift

Benign

0.28

Sift4G

Benign

0.36

Polyphen

0.0010

Vest4

0.069

MutPred

0.078

Loss of helix (P = 0.0376);

MVP

0.055

ClinPred

0.44

GERP RS

0.56

Varity_R

0.034

gMVP

0.058

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