rs151146863

Positions:

chr22-20870364-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004782.4(SNAP29):c.265G>A(p.Glu89Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00026 in 1,614,142 control chromosomes in the GnomAD database, including 2 homozygotes. 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.00054 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00023 ( 2 hom. )

Consequence

SNAP29
NM_004782.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 4.97

Variant links:

Genes affected

SNAP29 (HGNC:11133): (synaptosome associated protein 29) This gene, a member of the SNAP25 gene family, encodes a protein involved in multiple membrane trafficking steps. Two other members of this gene family, SNAP23 and SNAP25, encode proteins that bind a syntaxin protein and mediate synaptic vesicle membrane docking and fusion to the plasma membrane. The protein encoded by this gene binds tightly to multiple syntaxins and is localized to intracellular membrane structures rather than to the plasma membrane. While the protein is mostly membrane-bound, a significant fraction of it is found free in the cytoplasm. Use of multiple polyadenylation sites has been noted for this gene. [provided by RefSeq, Jul 2008]

SNAP29 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009305596).

BP6

Variant 22-20870364-G-A is Benign according to our data. Variant chr22-20870364-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 235384.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-20870364-G-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000539 (82/152262) while in subpopulation EAS AF= 0.0122 (63/5180). AF 95% confidence interval is 0.00976. There are 0 homozygotes in gnomad4. There are 45 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SNAP29	NM_004782.4 linkuse as main transcript	c.265G>A	p.Glu89Lys	missense_variant	2/5	ENST00000215730.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
SNAP29	ENST00000215730.12 linkuse as main transcript	c.265G>A	p.Glu89Lys	missense_variant	2/5	1	NM_004782.4	P1
SNAP29	ENST00000439214.1 linkuse as main transcript	c.-15G>A		5_prime_UTR_variant	2/5	3
SNAP29	ENST00000490458.1 linkuse as main transcript	n.295G>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes

AF:

0.000532

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0121

Gnomad SAS

AF:

0.000413

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.00111

AC:

280

AN:

251474

Hom.:

AF XY:

0.000898

AC XY:

122

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0148

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000231

AC:

337

AN:

1461880

Hom.:

Cov.:

AF XY:

0.000209

AC XY:

152

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00673

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.000960

GnomAD4 genome

AF:

0.000539

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.000604

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0122

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000654

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00105

AC:

127

Asia WGS

AF:

0.00635

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

CEDNIK syndrome

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Jan 11, 2022	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Oct 30, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Feb 01, 2024	- -

SNAP29-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 13, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.26

Eigen

Benign

-0.25

Eigen_PC

Benign

0.00092

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.89

MetaRNN

Benign

0.0093

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.48

MutationTaster

Benign

1.0

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.3

REVEL

Benign

0.21

Sift

Benign

0.74

Sift4G

Benign

0.57

Polyphen

0.021

Vest4

0.23

MVP

0.81

MPC

0.077

ClinPred

0.029

GERP RS

4.5

Varity_R

0.27

gMVP

0.51

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

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