Variant chr17-50549394-G-A 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_022827.4(SPATA20):c.769G>A(p.Ala257Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000719 in 1,612,488 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00030 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

SPATA20
NM_022827.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.470

Variant links:

Genes affected

SPATA20 (HGNC:26125): (spermatogenesis associated 20) Predicted to be involved in carbohydrate metabolic process; cell differentiation; and spermatogenesis. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

SPATA20 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=0.018653482).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SPATA20	NM_022827.4 linkuse as main transcript	c.769G>A	p.Ala257Thr	missense_variant	7/17	ENST00000006658.11	NP_073738.2
SPATA20	NM_001258372.2 linkuse as main transcript	c.721G>A	p.Ala241Thr	missense_variant	6/16		NP_001245301.1
SPATA20	NM_001258373.2 linkuse as main transcript	c.589G>A	p.Ala197Thr	missense_variant	7/17		NP_001245302.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPATA20	ENST00000006658.11 linkuse as main transcript	c.769G>A	p.Ala257Thr	missense_variant	7/17	1	NM_022827.4	ENSP00000006658		Q8TB22-2

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000844

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.000478

GnomAD3 exomes

AF:

0.0000682

AC:

AN:

249416

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135326

show subpopulations

Gnomad AFR exome

AF:

0.000810

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000266

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000479

AC:

AN:

1460168

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

726382

show subpopulations

Gnomad4 AFR exome

AF:

0.000926

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000270

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

AF:

0.000302

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000362

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000962

Gnomad4 AMR

AF:

0.000327

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:

0.000473

Alfa

AF:

0.0000726

Hom.:

Bravo

AF:

0.000223

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

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 16, 2023

The c.769G>A (p.A257T) alteration is located in exon 7 (coding exon 7) of the SPATA20 gene. This alteration results from a G to A substitution at nucleotide position 769, causing the alanine (A) at amino acid position 257 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

Benign

0.073

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.051

.;.;T;T

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.41

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.84

T;T;T;T

M_CAP

Benign

0.0092

MetaRNN

Benign

0.019

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

.;.;L;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.36

PROVEAN

Benign

0.060

.;N;N;.

REVEL

Benign

0.021

Sift

Benign

0.55

.;T;T;.

Sift4G

Benign

0.56

T;T;T;T

Polyphen

0.12, 0.15

.;B;B;.

Vest4

0.17

MVP

0.13

MPC

0.20

ClinPred

0.036

GERP RS

3.3

Varity_R

0.040

gMVP

0.28

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