Genetic Variant SPATA4:p.Tyr255His (chr4-176188161-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_144644.4(SPATA4):c.763T>C(p.Tyr255His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000164 in 1,461,482 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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: 0.000016 ( 0 hom. )

Consequence

SPATA4
NM_144644.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.618

Variant links:

Genes affected

SPATA4 (HGNC:17333): (spermatogenesis associated 4) Predicted to enable microtubule binding activity. Predicted to be involved in regulation of cytoskeleton organization. Predicted to be located in cytoplasm. Predicted to be active in axoneme. [provided by Alliance of Genome Resources, Apr 2022]

SPATA4 links:

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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=0.060503572).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPATA4	NM_144644.4 link	c.763T>C	p.Tyr255His	missense_variant	Exon 5 of 6	ENST00000280191.7	NP_653245.2	Q8NEY3
SPATA4	XM_047449608.1 link	c.244T>C	p.Tyr82His	missense_variant	Exon 5 of 6		XP_047305564.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPATA4	ENST00000280191.7 link	c.763T>C	p.Tyr255His	missense_variant	Exon 5 of 6	1	NM_144644.4	ENSP00000280191.2		Q8NEY3
SPATA4	ENST00000515234.1 link	c.244T>C	p.Tyr82His	missense_variant	Exon 4 of 5	1		ENSP00000422290.1		G5E9Y6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000558

AC:

AN:

250892

Hom.:

AF XY:

0.0000590

AC XY:

AN XY:

135658

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:

0.000459

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461482

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727028

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:

0.000244

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000494

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

Sep 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.763T>C (p.Y255H) alteration is located in exon 5 (coding exon 5) of the SPATA4 gene. This alteration results from a T to C substitution at nucleotide position 763, causing the tyrosine (Y) at amino acid position 255 to be replaced by a histidine (H). 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

-0.53

BayesDel_noAF

Benign

-0.68

CADD

Benign

0.27

DANN

Benign

0.78

DEOGEN2

Benign

0.0044

T;.

Eigen

Benign

-0.89

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.016

LIST_S2

Benign

0.41

T;T

M_CAP

Benign

0.0084

MetaRNN

Benign

0.061

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.4

L;.

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.80

N;N

REVEL

Benign

0.035

Sift

Benign

0.16

T;T

Sift4G

Benign

0.43

T;T

Polyphen

0.85

P;.

Vest4

0.083

MutPred

0.34

Gain of disorder (P = 0.016);.;

MVP

0.38

MPC

0.13

ClinPred

0.097

GERP RS

-6.1

Varity_R

0.038

gMVP

0.26

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