rs202020647

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_024700.4(SNIP1):c.331C>T(p.Arg111Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00013 in 1,590,180 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R111H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

SNIP1
NM_024700.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:1U:2

Conservation

PhyloP100: 3.45

Variant links:

Genes affected

SNIP1 (HGNC:30587): (Smad nuclear interacting protein 1) This gene encodes a protein that contains a coiled-coil motif and C-terminal forkhead-associated (FHA) domain. The encoded protein functions as a transcriptional coactivator that increases c-Myc activity and inhibits transforming growth factor beta (TGF-beta) and nuclear factor kappa-B (NF-kB) signaling. The encoded protein also regulates the stability of cyclin D1 mRNA, and may play a role in cell proliferation and cancer progression. Mutations in this gene are a cause of psychomotor retardation, epilepsy, and craniofacial dysmorphism (PMRED). [provided by RefSeq, Mar 2012]

SNIP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12755707).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SNIP1	NM_024700.4 linkuse as main transcript	c.331C>T	p.Arg111Cys	missense_variant	3/4	ENST00000296215.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
SNIP1	ENST00000296215.8 linkuse as main transcript	c.331C>T	p.Arg111Cys	missense_variant	3/4	1	NM_024700.4	P1
SNIP1	ENST00000638725.1 linkuse as main transcript	n.843C>T		non_coding_transcript_exon_variant	1/2	2
SNIP1	ENST00000468040.2 linkuse as main transcript	c.*105C>T		3_prime_UTR_variant, NMD_transcript_variant	4/5	5

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152078

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.000958

GnomAD3 exomes

AF:

0.000178

AC:

AN:

236004

Hom.:

AF XY:

0.000172

AC XY:

AN XY:

128138

show subpopulations

Gnomad AFR exome

AF:

0.0000623

Gnomad AMR exome

AF:

0.000753

Gnomad ASJ exome

AF:

0.000113

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000140

Gnomad OTH exome

AF:

0.000174

GnomAD4 exome

AF:

0.000129

AC:

185

AN:

1437984

Hom.:

Cov.:

AF XY:

0.000139

AC XY:

AN XY:

712052

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000725

Gnomad4 ASJ exome

AF:

0.0000396

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000235

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000110

Gnomad4 OTH exome

AF:

0.000388

GnomAD4 genome

AF:

0.000138

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74410

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000393

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000176

Gnomad4 OTH

AF:

0.000948

Alfa

AF:

0.0000592

Hom.:

Bravo

AF:

0.000136

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Childhood epilepsy with centrotemporal spikes

Pathogenic:1

Pathogenic, no assertion criteria provided

case-control

Bioinformatics Core, Luxembourg Center for Systems Biomedicine

Jan 01, 2017

CAADphred>15 -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 19, 2023

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 111 of the SNIP1 protein (p.Arg111Cys). This variant is present in population databases (rs202020647, gnomAD 0.07%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with Rolandic epilepsy (PMID: 29358611). ClinVar contains an entry for this variant (Variation ID: 433084). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SNIP1 protein function with a positive predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Psychomotor retardation, epilepsy, and craniofacial dysmorphism

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jan 17, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.37

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Benign

0.29

Eigen

Benign

0.055

Eigen_PC

Benign

0.080

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.031

MetaRNN

Benign

0.13

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-4.0

REVEL

Benign

0.13

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0090

Polyphen

1.0

Vest4

0.52

MutPred

0.41

Gain of ubiquitination at K106 (P = 0.0219);

MVP

0.28

MPC

1.6

ClinPred

0.17

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.42

gMVP

0.27

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