Variant chr16-50675843-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_182854.4(SNX20):c.209G>A(p.Arg70His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000558 in 1,613,478 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

SNX20
NM_182854.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.278

Variant links:

Genes affected

SNX20 (HGNC:30390): (sorting nexin 20) SNX20 interacts with the cytoplasmic domain of PSGL1 (SELPLG; MIM 600738) and cycles PSGL1 into endosomes.[supplied by OMIM, Feb 2010]

SNX20 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=0.022763044).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SNX20	NM_182854.4 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4	ENST00000330943.9
SNX20	NM_153337.3 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4
SNX20	NM_001144972.2 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SNX20	ENST00000330943.9 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4	1	NM_182854.4	P1	Q7Z614-1
SNX20	ENST00000423026.6 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4	1			Q7Z614-4
SNX20	ENST00000568993.5 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant, NMD_transcript_variant	3/5	1			Q7Z614-3
SNX20	ENST00000300590.7 linkuse as main transcript	c.209G>A	p.Arg70His	missense_variant	3/4	2			Q7Z614-3

Frequencies

GnomAD3 genomes

AF:

0.000223

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00209

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000997

AC:

AN:

250640

Hom.:

AF XY:

0.0000886

AC XY:

AN XY:

135500

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000527

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000383

AC:

AN:

1461270

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

726956

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000516

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000234

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000223

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00209

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000579

Hom.:

Bravo

AF:

0.000185

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2024

The c.209G>A (p.R70H) alteration is located in exon 3 (coding exon 2) of the SNX20 gene. This alteration results from a G to A substitution at nucleotide position 209, causing the arginine (R) at amino acid position 70 to be replaced by a histidine (H). 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

0.065

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.76

CADD

Benign

2.0

DANN

Benign

0.83

DEOGEN2

Benign

0.0073

.;.;T;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.052

LIST_S2

Benign

0.43

T;.;T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.023

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

N;N;N;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.18

PROVEAN

Benign

-0.63

N;N;N;.

REVEL

Benign

0.025

Sift

Benign

0.58

T;T;T;.

Sift4G

Benign

0.56

T;T;T;T

Polyphen

0.0030

B;B;B;.

Vest4

0.087

MutPred

0.43

Loss of MoRF binding (P = 0.0638);Loss of MoRF binding (P = 0.0638);Loss of MoRF binding (P = 0.0638);Loss of MoRF binding (P = 0.0638);

MVP

0.29

MPC

0.62

ClinPred

0.020

GERP RS

-3.8

Varity_R

0.021

gMVP

0.20

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