Genetic Variant SNX19:p.Gly887Asp (chr11-130880720-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_014758.3(SNX19):c.2660G>A(p.Gly887Asp) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,460,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

SNX19
NM_014758.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.36

Variant links:

Genes affected

SNX19 (HGNC:21532): (sorting nexin 19) Islet antigen-2 (IA-2) is an autoantigen in type 1 diabetes and plays a role in insulin secretion. IA-2 is found in dense-core secretory vesicles and interacts with the product of this gene, a sorting nexin. In mouse pancreatic beta-cells, the encoded protein influenced insulin secretion by stabilizing the number of dense-core secretory vesicles. [provided by RefSeq, Dec 2016]

SNX19 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.898

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SNX19	NM_014758.3 link	c.2660G>A	p.Gly887Asp	missense_variant	Exon 9 of 11	ENST00000265909.9	NP_055573.3	Q92543-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SNX19	ENST00000265909.9 link	c.2660G>A	p.Gly887Asp	missense_variant	Exon 9 of 11	1	NM_014758.3	ENSP00000265909.4		Q92543-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1460082

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726118

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 19, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2660G>A (p.G887D) alteration is located in exon 9 (coding exon 9) of the SNX19 gene. This alteration results from a G to A substitution at nucleotide position 2660, causing the glycine (G) at amino acid position 887 to be replaced by an aspartic acid (D). 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

0.33

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.024

T;.;.;.;.

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.87

D;D;D;.;D

M_CAP

Benign

0.028

MetaRNN

Pathogenic

0.90

D;D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

L;.;.;.;.

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-4.2

D;D;D;D;D

REVEL

Uncertain

0.40

Sift

Benign

0.069

T;T;T;T;T

Sift4G

Benign

0.10

T;D;D;T;T

Polyphen

1.0

D;.;.;.;.

Vest4

0.77

MutPred

0.83

Gain of ubiquitination at K892 (P = 0.0581);.;.;.;.;

MVP

0.46

MPC

0.59

ClinPred

0.96

GERP RS

6.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.30

gMVP

0.55

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over