Genetic Variant STING1:p.Leu126Ile (chr5-139481194-G-T) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_198282.4(STING1):c.376C>A(p.Leu126Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000885 in 1,614,230 control chromosomes in the GnomAD database, including 16 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L126V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0034 ( 5 hom., cov: 32)

Exomes 𝑓: 0.00062 ( 11 hom. )

Consequence

STING1
NM_198282.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.91

Publications

7 publications found

Variant links:

Genes affected

STING1 (HGNC:27962): (stimulator of interferon response cGAMP interactor 1) This gene encodes a five transmembrane protein that functions as a major regulator of the innate immune response to viral and bacterial infections. The encoded protein is a pattern recognition receptor that detects cytosolic nucleic acids and transmits signals that activate type I interferon responses. The encoded protein has also been shown to play a role in apoptotic signaling by associating with type II major histocompatibility complex. Mutations in this gene are the cause of infantile-onset STING-associated vasculopathy. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2014]

STING1 Gene-Disease associations (from GenCC):

STING-associated vasculopathy with onset in infancy
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
familial chilblain lupus
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

STING1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0062081516).

BP6

Variant 5-139481194-G-T is Benign according to our data. Variant chr5-139481194-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 475205.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00345 (525/152364) while in subpopulation AFR AF = 0.0105 (435/41584). AF 95% confidence interval is 0.00965. There are 5 homozygotes in GnomAd4. There are 249 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 525 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198282.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
STING1	NM_198282.4	MANE Select	c.376C>A	p.Leu126Ile	missense	Exon 4 of 8	NP_938023.1
STING1	NM_001301738.2		c.376C>A	p.Leu126Ile	missense	Exon 4 of 7	NP_001288667.1
STING1	NM_001367258.1		c.19C>A	p.Leu7Ile	missense	Exon 3 of 7	NP_001354187.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
STING1	ENST00000330794.9	TSL:1 MANE Select	c.376C>A	p.Leu126Ile	missense	Exon 4 of 8	ENSP00000331288.4
STING1	ENST00000512606.6	TSL:1	n.612C>A		non_coding_transcript_exon	Exon 2 of 6
STING1	ENST00000651699.1		c.376C>A	p.Leu126Ile	missense	Exon 3 of 7	ENSP00000499166.1

Frequencies

GnomAD3 genomes

AF:

0.00344

AC:

524

AN:

152246

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0105

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00419

Gnomad ASJ

AF:

0.000864

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00955

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00125

AC:

313

AN:

251368

AF XY:

0.00110

show subpopulations

Gnomad AFR exome

AF:

0.0106

Gnomad AMR exome

AF:

0.00171

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000493

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.000618

AC:

904

AN:

1461866

Hom.:

Cov.:

AF XY:

0.000624

AC XY:

454

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.0142

AC:

477

AN:

33480

American (AMR)

AF:

0.00168

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00103

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000927

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00451

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000170

AC:

189

AN:

1111998

Other (OTH)

AF:

0.00169

AC:

102

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

112

167

223

279

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00345

AC:

525

AN:

152364

Hom.:

Cov.:

AF XY:

0.00334

AC XY:

249

AN XY:

74504

show subpopulations

African (AFR)

AF:

0.0105

AC:

435

AN:

41584

American (AMR)

AF:

0.00418

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.000864

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.0103

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000235

AC:

AN:

68042

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

119

149

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00115

Hom.:

Bravo

AF:

0.00388

ESP6500AA

AF:

0.0118

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.00137

AC:

166

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.000491

EpiControl

AF:

0.000889

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Aug 01, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.376C>A (p.L126I) alteration is located in exon 4 (coding exon 2) of the TMEM173 gene. This alteration results from a C to A substitution at nucleotide position 376, causing the leucine (L) at amino acid position 126 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

STING1-related disorder

Benign:1

Jan 29, 2024

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

not provided

Benign:1

Nov 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

STING1: BP4, BS1, BS2

Autoinflammatory syndrome

Benign:1

Apr 05, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

STING-associated vasculopathy with onset in infancy

Benign:1

Feb 01, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.62

CADD

Benign

9.7

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.090

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.59

MetaRNN

Benign

0.0062

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.7

PhyloP100

1.9

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.67

REVEL

Benign

0.12

Sift

Uncertain

0.023

Sift4G

Benign

0.077

Polyphen

0.84

Vest4

0.41

MVP

0.47

MPC

0.61

ClinPred

0.017

GERP RS

2.8

Varity_R

0.22

Mutation Taster

=94/6

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over