Genetic Variant SYNPR:p.Arg14Trp (chr3-63278698-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001130003.2(SYNPR):c.40C>T(p.Arg14Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000438 in 1,551,528 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

SYNPR
NM_001130003.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.01

Variant links:

Genes affected

SYNPR (HGNC:16507): (synaptoporin) Predicted to be located in neuron projection and synaptic vesicle. Predicted to be integral component of membrane. Predicted to be active in synaptic vesicle membrane. Predicted to be integral component of synaptic vesicle membrane. [provided by Alliance of Genome Resources, Apr 2022]

SYNPR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYNPR	NM_001130003.2 link	c.40C>T	p.Arg14Trp	missense_variant	Exon 2 of 6	ENST00000478300.6	NP_001123475.1	Q8TBG9-2
SYNPR	XM_017005732.3 link	c.40C>T	p.Arg14Trp	missense_variant	Exon 2 of 6		XP_016861221.1
SYNPR	XM_017005731.1 link	c.132+26112C>T		intron_variant	Intron 2 of 5		XP_016861220.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYNPR	ENST00000478300.6 link	c.40C>T	p.Arg14Trp	missense_variant	Exon 2 of 6	1	NM_001130003.2	ENSP00000418994.1		Q8TBG9-2

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000260

AC:

AN:

154022

Hom.:

AF XY:

0.0000122

AC XY:

AN XY:

81740

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000671

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000436

AC:

AN:

1399402

Hom.:

Cov.:

AF XY:

0.0000362

AC XY:

AN XY:

690212

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000280

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000547

Gnomad4 OTH exome

AF:

0.0000172

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000882

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ExAC

AF:

0.0000806

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 27, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.40C>T (p.R14W) alteration is located in exon 2 (coding exon 2) of the SYNPR gene. This alteration results from a C to T substitution at nucleotide position 40, causing the arginine (R) at amino acid position 14 to be replaced by a tryptophan (W). 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

BayesDel_addAF

Benign

-0.0035

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Uncertain

1.0

Eigen

Benign

0.19

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Benign

0.71

LIST_S2

Uncertain

0.97

D;T

M_CAP

Pathogenic

0.30

MetaRNN

Uncertain

0.74

D;D

MetaSVM

Benign

-0.67

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-2.3

N;D

REVEL

Uncertain

0.46

Sift

Benign

0.030

D;.

Sift4G

Uncertain

0.042

D;D

Vest4

0.67

MVP

0.78

MPC

0.25

ClinPred

0.93

GERP RS

4.3

gMVP

0.67

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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