chr4-122923158-A-G

Position:

chr4-122923158-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_145207.3(SPATA5):c.16A>G(p.Asn6Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000353 in 1,614,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

SPATA5
NM_145207.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.39

Variant links:

Genes affected

SPATA5 (HGNC:):

SPATA5 links:

AFG2A (HGNC:18119): (AFG2 AAA ATPase homolog A) This gene encodes a member of the ATPase associated with diverse activities family, whose members are defined by a highly conserved ATPase domain. Members of this family participate in diverse cellular processes that include membrane fusion, DNA replication, microtubule severing, and protein degradation. The protein encoded by this gene has a putative mitochondrial targeting sequence and has been proposed to function in maintenance of mitochondrial function and integrity during mouse spermatogenesis. Allelic variants in this gene have been associated with epilepsy, hearing loss, and cognitive disability syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2016]

AFG2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09181398).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SPATA5	NM_145207.3 linkuse as main transcript	c.16A>G	p.Asn6Asp	missense_variant	1/16	ENST00000274008.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AFG2A	ENST00000274008.5 linkuse as main transcript	c.16A>G	p.Asn6Asp	missense_variant	1/16	1	NM_145207.3	P1	Q8NB90-1
AFG2A	ENST00000422835.2 linkuse as main transcript	n.58A>G		non_coding_transcript_exon_variant	1/15	1
AFG2A	ENST00000675612.1 linkuse as main transcript	c.16A>G	p.Asn6Asp	missense_variant	1/17
AFG2A	ENST00000674886.1 linkuse as main transcript	n.81A>G		non_coding_transcript_exon_variant	1/11

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251448

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135888

show subpopulations

Gnomad AFR exome

AF:

0.000492

Gnomad AMR exome

AF:

0.0000289

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000233

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.000151

AC:

AN:

152298

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74480

show subpopulations

Gnomad4 AFR

AF:

0.000553

Gnomad4 AMR

AF:

0.00

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:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000128

ExAC

AF:

0.0000412

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 11, 2021

The c.16A>G (p.N6D) alteration is located in exon 1 (coding exon 1) of the SPATA5 gene. This alteration results from a A to G substitution at nucleotide position 16, causing the asparagine (N) at amino acid position 6 to be replaced by an aspartic acid (D). The p.N6D alteration is predicted to be tolerated by in silico analysis. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Microcephaly-intellectual disability-sensorineural hearing loss-epilepsy-abnormal muscle tone syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 13, 2022

This sequence change replaces asparagine, which is neutral and polar, with aspartic acid, which is acidic and polar, at codon 6 of the SPATA5 protein (p.Asn6Asp). This variant is present in population databases (rs751349548, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with SPATA5-related conditions. ClinVar contains an entry for this variant (Variation ID: 940413). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.010

Eigen

Benign

-0.077

Eigen_PC

Benign

0.016

FATHMM_MKL

Benign

0.48

LIST_S2

Benign

0.70

M_CAP

Benign

0.072

MetaRNN

Benign

0.092

MetaSVM

Uncertain

0.49

MutationTaster

Benign

0.84

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.80

REVEL

Uncertain

0.30

Sift

Uncertain

0.011

Sift4G

Uncertain

0.052

Polyphen

0.083

Vest4

0.28

MVP

0.87

MPC

0.20

ClinPred

0.17

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.24

gMVP

0.17

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