rs148636776

Positions:

chr12-111447491-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PP3_ModeratePP5

The NM_005475.3(SH2B3):c.1183G>A(p.Glu395Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000349 in 1,609,668 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00036 ( 0 hom. )

Consequence

SH2B3
NM_005475.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:1

Conservation

PhyloP100: 9.60

Variant links:

Genes affected

SH2B3 (HGNC:29605): (SH2B adaptor protein 3) This gene encodes a member of the SH2B adaptor family of proteins, which are involved in a range of signaling activities by growth factor and cytokine receptors. The encoded protein is a key negative regulator of cytokine signaling and plays a critical role in hematopoiesis. Mutations in this gene have been associated with susceptibility to celiac disease type 13 and susceptibility to insulin-dependent diabetes mellitus. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2014]

SH2B3 links:

ATXN2 (HGNC:10555): (ataxin 2) This gene belongs to a group of genes that is associated with microsatellite-expansion diseases, a class of neurological and neuromuscular disorders caused by expansion of short stretches of repetitive DNA. The protein encoded by this gene has two globular domains near the N-terminus, one of which contains a clathrin-mediated trans-Golgi signal and an endoplasmic reticulum exit signal. The encoded cytoplasmic protein localizes to the endoplasmic reticulum and plasma membrane, is involved in endocytosis, and modulates mTOR signals, modifying ribosomal translation and mitochondrial function. The N-terminal region of the protein contains a polyglutamine tract of 14-31 residues that can be expanded in the pathogenic state to 32-200 residues. Intermediate length expansions of this tract increase susceptibility to amyotrophic lateral sclerosis, while long expansions of this tract result in spinocerebellar ataxia-2, an autosomal-dominantly inherited, neurodegenerative disorder. Genome-wide association studies indicate that loss-of-function mutations in this gene may be associated with susceptibility to type I diabetes, obesity and hypertension. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

ATXN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.858

PP5

Variant 12-111447491-G-A is Pathogenic according to our data. Variant chr12-111447491-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 619973.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=3, Likely_pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SH2B3	NM_005475.3 linkuse as main transcript	c.1183G>A	p.Glu395Lys	missense_variant	6/8	ENST00000341259.7	NP_005466.1	Q9UQQ2Q59H48

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SH2B3	ENST00000341259.7 linkuse as main transcript	c.1183G>A	p.Glu395Lys	missense_variant	6/8	1	NM_005475.3	ENSP00000345492.2	Q9UQQ2
SH2B3	ENST00000538307.1 linkuse as main transcript	c.577G>A	p.Glu193Lys	missense_variant	5/7	2		ENSP00000440597.1	F5GYM4
ATXN2	ENST00000642389.2 linkuse as main transcript	n.*171-3304C>T		intron_variant				ENSP00000496055.2	A0A2R8Y7E6

Frequencies

GnomAD3 genomes

AF:

0.000222

AC:

AN:

148562

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000151

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:

0.000398

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000153

AC:

AN:

248568

Hom.:

AF XY:

0.000171

AC XY:

AN XY:

134740

show subpopulations

Gnomad AFR exome

AF:

0.000125

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:

0.000313

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000362

AC:

529

AN:

1461106

Hom.:

Cov.:

AF XY:

0.000326

AC XY:

237

AN XY:

726882

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000189

Gnomad4 NFE exome

AF:

0.000457

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000222

AC:

AN:

148562

Hom.:

Cov.:

AF XY:

0.000166

AC XY:

AN XY:

72206

show subpopulations

Gnomad4 AFR

AF:

0.000151

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:

0.000398

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000307

Hom.:

Bravo

AF:

0.000215

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000124

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:4Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Thrombocythemia 1

Pathogenic:3

Likely pathogenic, criteria provided, single submitter	clinical testing	Neuberg Centre For Genomic Medicine, NCGM	Mar 01, 2023	The missense c.1183G>A(p.Glu395Lys) variant in SH2B3 gene has been reported in heterozygous state in individuals affected with Thrombocythemia (Bastarache L, et. al., 2018). The variant is reported with an allele frequency of 0.01% in the gnomAD exomes database and is novel (not in any individuals) in 1000 Genomes database. This variant has been reported to the ClinVar database as Pathogenic. The amino acid change p.Glu395Lys in SH2B3 is predicted as conserved by GERP++ and PhyloP across 100 vertebrates. The amino acid Glu at position 395 is changed to a Lys changing protein sequence and it might alter its composition and physico-chemical properties. Additional functional studies are required to prove pathogenicity of the variant. For these reasons, this variant has been classified as Likely Pathogenic. -
Pathogenic, criteria provided, single submitter	in vitro;research	Center for Precision Medicine, Vanderbilt University Medical Center	Mar 16, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jan 10, 2024	SH2B3 is an adaptor protein that regulates growth factor and cytokine signaling. Mutations are found in hematopoietic disorders including leukemias and myeloid disease. This mutation reported in ClinVar(619973 ) associated with Autosomal dominant Thrombocythemia 1 . -

Primary familial polycythemia due to EPO receptor mutation

Pathogenic:1

Pathogenic, criteria provided, single submitter

in vitro;research

Center for Precision Medicine, Vanderbilt University Medical Center

Mar 16, 2018

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Mayo Clinic Laboratories, Mayo Clinic

Jul 19, 2024

PM2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.91

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.28

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.91

D;.

Eigen

Pathogenic

0.95

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Benign

0.054

MetaRNN

Pathogenic

0.86

D;D

MetaSVM

Uncertain

0.10

MutationAssessor

Pathogenic

3.6

H;.

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-4.0

D;D

REVEL

Uncertain

0.64

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.92

MVP

0.94

MPC

0.41

ClinPred

0.99

GERP RS

5.0

Varity_R

0.88

gMVP

0.67

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