10-22364898-C-G

Position:

• chr10-22364898-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_012443.4(SPAG6):​c.167C>G​(p.Thr56Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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: 6.8e-7 (0 hom.)
• Consequence: SPAG6 NM_012443.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.80

Genes affected

SPAG6 (HGNC:11215): (sperm associated antigen 6) 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 antibodies from an infertile man. This protein localizes to the tail of permeabilized human sperm and contains eight contiguous armadillo repeats, a motif known to mediate protein-protein interactions. Studies in mice suggest that this protein is involved in sperm flagellar motility and maintenance of the structural integrity of mature sperm. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

ENSG00000233451 (HGNC:):

ACMG classification

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=0.24163127).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPAG6	NM_012443.4	c.167C>G	p.Thr56Arg	missense_variant	3/11	ENST00000376624.8	NP_036575.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPAG6	ENST00000376624.8	c.167C>G	p.Thr56Arg	missense_variant	3/11	1	NM_012443.4	ENSP00000365811.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461056 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726804

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 16, 2023

The c.167C>G (p.T56R) alteration is located in exon 3 (coding exon 3) of the SPAG6 gene. This alteration results from a C to G substitution at nucleotide position 167, causing the threonine (T) at amino acid position 56 to be replaced by an arginine (R). 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	0.28
BayesDel_addAF	Benign	-0.033	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.032	T;T;.;.;.;.
Eigen	Benign	-0.20
Eigen_PC	Benign	-0.15
FATHMM_MKL	Benign	0.48	N
LIST_S2	Uncertain	0.94	D;D;D;D;D;D
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.24	T;T;T;T;T;T
MetaSVM	Benign	-0.82	T
MutationAssessor	Uncertain	2.0	.;M;.;M;.;.
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-2.3	.;N;N;N;N;N
REVEL	Benign	0.12
Sift	Uncertain	0.016	.;D;D;D;T;D
Sift4G	Uncertain	0.038	D;D;D;D;D;D
Polyphen		0.025, 0.14	.;B;.;B;.;.
Vest4		0.49
MutPred		0.43		.;Gain of solvent accessibility (P = 0.0808);Gain of solvent accessibility (P = 0.0808);Gain of solvent accessibility (P = 0.0808);.;.;
MVP		0.76
MPC		0.34
ClinPred		0.53	D
GERP RS		3.8
Varity_R		0.19
gMVP		0.65

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-22653827;