chr12-111418163-G-C

Variant names:

• chr12-111418163-G-C
• rs764059331
• NM_005475.3:c.18G>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_005475.3(SH2B3):​c.18G>C​(p.Leu6Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000723 in 1,383,170 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 Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. L6L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000072 (0 hom.)
• Consequence: SH2B3 NM_005475.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.153
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• acute lymphoblastic leukemia

  Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
• growth retardation-mild developmental delay-chronic hepatitis syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• primary familial polycythemia due to EPO receptor mutation

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)
• schizophrenia

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)
• thrombocythemia 1

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.66).
• BP6: Variant 12-111418163-G-C is Benign according to our data. Variant chr12-111418163-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 3440754.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-0.153 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SH2B3	NM_005475.3	c.18G>C	p.Leu6Leu	synonymous_variant	Exon 2 of 8	ENST00000341259.7	NP_005466.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SH2B3	ENST00000341259.7	c.18G>C	p.Leu6Leu	synonymous_variant	Exon 2 of 8	1	NM_005475.3	ENSP00000345492.2
SH2B3	ENST00000550925.2	c.-178G>C		upstream_gene_variant		5		ENSP00000473529.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000584 AC: 1 AN: 171218 AF XY: 0.0000105

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000117

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000723 AC: 10 AN: 1383170 Hom.: 0 Cov.: 32 AF XY: 0.0000102 AC XY: 7 AN XY: 685574

African (AFR) AF: 0.00 AC: 0 AN: 29144

American (AMR) AF: 0.00 AC: 0 AN: 34168

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22112

East Asian (EAS) AF: 0.00 AC: 0 AN: 36852

South Asian (SAS) AF: 0.00 AC: 0 AN: 75190

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 36648

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3952

European-Non Finnish (NFE) AF: 0.00000920 AC: 10 AN: 1087428

Other (OTH) AF: 0.00 AC: 0 AN: 57676

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Benign:1

Nov 22, 2024

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.66
CADD	Benign	6.3
DANN	Benign	0.69
PhyloP100		-0.15
PromoterAI		0.022	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs764059331; hg19: chr12-111855967;