14-88385822-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018418.5(SPATA7):c.4G>C(p.Asp2His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,452,744 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D2N) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SPATA7
NM_018418.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.251

Publications

37 publications found

Variant links:

Genes affected

SPATA7 (HGNC:20423): (spermatogenesis associated 7) This gene, originally isolated from testis, is also expressed in retina. Mutations in this gene are associated with Leber congenital amaurosis and juvenile retinitis pigmentosa. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2010]

SPATA7 Gene-Disease associations (from GenCC):

Leber congenital amaurosis 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
Leber congenital amaurosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
severe early-childhood-onset retinal dystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SPATA7 links:

ENSG00000296360 (HGNC:):

ENSG00000296360 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26069012).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPATA7	NM_018418.5 link	c.4G>C	p.Asp2His	missense_variant	Exon 1 of 12	ENST00000393545.9	NP_060888.2	Q9P0W8-1V9HVY9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPATA7	ENST00000393545.9 link	c.4G>C	p.Asp2His	missense_variant	Exon 1 of 12	1	NM_018418.5	ENSP00000377176.4		Q9P0W8-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152068

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

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

GnomAD2 exomes

AF:

0.00

AC:

AN:

231254

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1452744

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

721628

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33450

American (AMR)

AF:

0.00

AC:

AN:

43616

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25878

East Asian (EAS)

AF:

0.00

AC:

AN:

39396

South Asian (SAS)

AF:

0.00

AC:

AN:

84458

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52026

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

9.02e-7

AC:

AN:

1108192

Other (OTH)

AF:

0.0000167

AC:

AN:

60010

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

152068

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74260

African (AFR)

AF:

0.00

AC:

AN:

41450

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67966

Other (OTH)

AF:

0.00

AC:

AN:

2090

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Leber congenital amaurosis 3

Uncertain:1

Apr 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 2 of the SPATA7 protein (p.Asp2His). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SPATA7-related conditions. ClinVar contains an entry for this variant (Variation ID: 1921703). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

Uncertain

0.48

BayesDel_addAF

Uncertain

0.027

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.019

.;T;.;T;T;.

Eigen

Uncertain

0.25

Eigen_PC

Benign

0.18

FATHMM_MKL

Benign

0.63

LIST_S2

Benign

0.85

.;T;T;T;T;T

M_CAP

Benign

0.043

MetaRNN

Benign

0.26

T;T;T;T;T;T

MetaSVM

Benign

-0.81

MutationAssessor

Benign

0.90

L;L;L;.;.;L

PhyloP100

0.25

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-1.1

N;N;N;N;D;N

REVEL

Benign

0.16

Sift

Uncertain

0.0050

D;D;D;D;D;D

Sift4G

Uncertain

0.024

D;D;D;.;D;D

Polyphen

0.99

D;D;D;.;.;.

Vest4

0.22

MutPred

0.17

Gain of methylation at R5 (P = 0.041);Gain of methylation at R5 (P = 0.041);Gain of methylation at R5 (P = 0.041);Gain of methylation at R5 (P = 0.041);Gain of methylation at R5 (P = 0.041);Gain of methylation at R5 (P = 0.041);

MVP

0.076

MPC

0.51

ClinPred

0.66

GERP RS

2.2

PromoterAI

-0.13

Neutral

(source)

Varity_R

0.13

gMVP

0.20

Mutation Taster

=88/12

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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14-88385822-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over