Genetic Variant SPAG16:p.Pro63Thr (chr2-213297265-C-A) – 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_024532.5(SPAG16):c.187C>A(p.Pro63Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000734 in 1,606,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

SPAG16
NM_024532.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.126

Variant links:

Genes affected

SPAG16 (HGNC:23225): (sperm associated antigen 16) Cilia and flagella are comprised of a microtubular backbone, the axoneme, which is organized by the basal body and surrounded by plasma membrane. SPAG16 encodes 2 major proteins that associate with the axoneme of sperm tail and the nucleus of postmeiotic germ cells, respectively (Zhang et al., 2007 [PubMed 17699735]).[supplied by OMIM, Jul 2008]

SPAG16 links:

Genome browser will be placed here

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=0.026543558).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPAG16	NM_024532.5 link	c.187C>A	p.Pro63Thr	missense_variant	Exon 3 of 16	ENST00000331683.10	NP_078808.3	Q8N0X2-1Q4G1A2B4DYB5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPAG16	ENST00000331683.10 link	c.187C>A	p.Pro63Thr	missense_variant	Exon 3 of 16	1	NM_024532.5	ENSP00000332592.5		Q8N0X2-1

Frequencies

GnomAD3 genomes

AF:

0.000394

AC:

AN:

152102

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00138

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000642

AC:

AN:

249274

Hom.:

AF XY:

0.0000445

AC XY:

AN XY:

134728

show subpopulations

Gnomad AFR exome

AF:

0.000678

Gnomad AMR exome

AF:

0.000117

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000886

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000399

AC:

AN:

1454656

Hom.:

Cov.:

AF XY:

0.0000428

AC XY:

AN XY:

723838

show subpopulations

Gnomad4 AFR exome

AF:

0.00147

Gnomad4 AMR exome

AF:

0.0000903

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000181

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.000394

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000390

AC XY:

AN XY:

74422

show subpopulations

Gnomad4 AFR

AF:

0.00137

Gnomad4 AMR

AF:

0.000196

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:

0.0000775

Hom.:

Bravo

AF:

0.000472

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 01, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.187C>A (p.P63T) alteration is located in exon 3 (coding exon 3) of the SPAG16 gene. This alteration results from a C to A substitution at nucleotide position 187, causing the proline (P) at amino acid position 63 to be replaced by a threonine (T). 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

-0.54

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.030

T;T;.;.;T

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.36

FATHMM_MKL

Uncertain

0.78

LIST_S2

Benign

0.73

T;T;T;T;T

MetaRNN

Benign

0.027

T;T;T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.8

.;L;L;.;.

PrimateAI

Benign

0.36

PROVEAN

Benign

-1.7

N;N;N;N;N

REVEL

Benign

0.027

Sift

Benign

0.13

T;T;T;T;T

Sift4G

Benign

0.45

T;T;D;D;T

Polyphen

0.0010, 0.0050, 0.24

.;B;B;.;B

Vest4

0.24, 0.22, 0.19, 0.22

MVP

0.65

MPC

0.026

ClinPred

0.019

GERP RS

-0.19

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.054

gMVP

0.26

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

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