rs146528350

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_003114.5(SPAG1):​c.957T>A​(p.Val319Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000667 in 1,574,718 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00040 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00070 ( 9 hom. )

Consequence

SPAG1
NM_003114.5 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.24

Publications

1 publications found
Variant links:
Genes affected
SPAG1 (HGNC:11212): (sperm associated antigen 1) The correlation of anti-sperm antibodies with cases of unexplained infertility implicates a role for these antibodies in blocking fertilization. Improved diagnosis and treatment of immunologic infertility, as well as identification of proteins for targeted contraception, are dependent on the identification and characterization of relevant sperm antigens. The protein expressed by this gene is recognized by anti-sperm agglutinating antibodies from an infertile woman. Furthermore, immunization of female rats with the recombinant human protein reduced fertility. This protein localizes to the plasma membrane of germ cells in the testis and to the post-acrosomal plasma membrane of mature spermatozoa. Recombinant polypeptide binds GTP and exhibits GTPase activity. Thus, this protein may regulate GTP signal transduction pathways involved in spermatogenesis and fertilization. Two transcript variants of this gene encode the same protein. [provided by RefSeq, Jul 2008]
SPAG1 Gene-Disease associations (from GenCC):
  • primary ciliary dyskinesia 28
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, G2P
  • primary ciliary dyskinesia
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.43).
BP6
Variant 8-100194129-T-A is Benign according to our data. Variant chr8-100194129-T-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 242017.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=1.24 with no splicing effect.
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000401 (61/152306) while in subpopulation SAS AF = 0.0031 (15/4832). AF 95% confidence interval is 0.00191. There are 0 homozygotes in GnomAd4. There are 29 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
BS2
High Homozygotes in GnomAdExome4 at 9 AR,AD gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SPAG1NM_003114.5 linkc.957T>A p.Val319Val synonymous_variant Exon 10 of 19 ENST00000388798.7 NP_003105.2 Q07617-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SPAG1ENST00000388798.7 linkc.957T>A p.Val319Val synonymous_variant Exon 10 of 19 1 NM_003114.5 ENSP00000373450.3 Q07617-1

Frequencies

GnomAD3 genomes
AF:
0.000394
AC:
60
AN:
152188
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000145
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000393
Gnomad ASJ
AF:
0.000864
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00310
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00318
Gnomad NFE
AF:
0.000412
Gnomad OTH
AF:
0.000479
GnomAD2 exomes
AF:
0.000891
AC:
204
AN:
229002
AF XY:
0.00108
show subpopulations
Gnomad AFR exome
AF:
0.000191
Gnomad AMR exome
AF:
0.000283
Gnomad ASJ exome
AF:
0.000572
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000642
Gnomad OTH exome
AF:
0.00147
GnomAD4 exome
AF:
0.000695
AC:
989
AN:
1422412
Hom.:
9
Cov.:
28
AF XY:
0.000795
AC XY:
562
AN XY:
706814
show subpopulations
African (AFR)
AF:
0.000348
AC:
11
AN:
31606
American (AMR)
AF:
0.000267
AC:
10
AN:
37400
Ashkenazi Jewish (ASJ)
AF:
0.000968
AC:
24
AN:
24806
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39356
South Asian (SAS)
AF:
0.00417
AC:
328
AN:
78730
European-Finnish (FIN)
AF:
0.0000380
AC:
2
AN:
52618
Middle Eastern (MID)
AF:
0.00663
AC:
37
AN:
5578
European-Non Finnish (NFE)
AF:
0.000470
AC:
514
AN:
1093554
Other (OTH)
AF:
0.00107
AC:
63
AN:
58764
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.427
Heterozygous variant carriers
0
43
85
128
170
213
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000401
AC:
61
AN:
152306
Hom.:
0
Cov.:
33
AF XY:
0.000389
AC XY:
29
AN XY:
74478
show subpopulations
African (AFR)
AF:
0.000144
AC:
6
AN:
41572
American (AMR)
AF:
0.000392
AC:
6
AN:
15298
Ashkenazi Jewish (ASJ)
AF:
0.000864
AC:
3
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00310
AC:
15
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.0103
AC:
3
AN:
292
European-Non Finnish (NFE)
AF:
0.000412
AC:
28
AN:
68034
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.516
Heterozygous variant carriers
0
4
7
11
14
18
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000345
Hom.:
0
Bravo
AF:
0.000465
Asia WGS
AF:
0.00231
AC:
8
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Primary ciliary dyskinesia Benign:1
Oct 28, 2016
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Primary ciliary dyskinesia 28 Benign:1
Dec 27, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Benign:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.43
CADD
Benign
8.2
DANN
Benign
0.71
PhyloP100
1.2
Mutation Taster
=100/0
polymorphism

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

Other links and lift over

dbSNP: rs146528350; hg19: chr8-101206357; API