Variant 3-44242133-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001145030.2(TOPAZ1):c.80C>T(p.Ala27Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000716 in 1,396,596 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

TOPAZ1
NM_001145030.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.137

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TOPAZ1	NM_001145030.2 linkuse as main transcript	c.80C>T	p.Ala27Val	missense_variant	1/20	ENST00000309765.4
TOPAZ1	XM_011533694.3 linkuse as main transcript	c.80C>T	p.Ala27Val	missense_variant	1/20
TOPAZ1	XM_017006361.2 linkuse as main transcript	c.80C>T	p.Ala27Val	missense_variant	1/18
TOPAZ1	XM_017006362.1 linkuse as main transcript	c.80C>T	p.Ala27Val	missense_variant	1/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TOPAZ1	ENST00000309765.4 linkuse as main transcript	c.80C>T	p.Ala27Val	missense_variant	1/20	5	NM_001145030.2	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000690

AC:

AN:

144978

Hom.:

AF XY:

0.00

AC XY:

AN XY:

78114

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:

0.0000187

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

7.16e-7

AC:

AN:

1396596

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

688806

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:

9.27e-7

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

Dec 07, 2023

The c.80C>T (p.A27V) 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 80, causing the alanine (A) at amino acid position 27 to be replaced by a valine (V). 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

0.091

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.77

Cadd

Benign

Dann

Uncertain

0.98

DEOGEN2

Benign

0.0073

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.052

LIST_S2

Benign

0.55

M_CAP

Benign

0.034

MetaRNN

Benign

0.055

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.34

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.85

REVEL

Benign

0.023

Sift

Benign

0.048

Sift4G

Benign

0.14

Polyphen

0.022

Vest4

0.055

MutPred

0.13

Gain of MoRF binding (P = 0.1048);

MVP

0.014

ClinPred

0.043

GERP RS

-1.1

Varity_R

0.059

gMVP

0.064

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.47

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.47

Position offset: -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