NM_006949.4:c.165C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2

The NM_006949.4(STXBP2):c.165C>T(p.Ile55Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000675 in 1,614,204 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0010 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00064 ( 7 hom. )

Consequence

STXBP2
NM_006949.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.362

Publications

3 publications found

Variant links:

Genes affected

STXBP2 (HGNC:11445): (syntaxin binding protein 2) This gene encodes a member of the STXBP/unc-18/SEC1 family. The encoded protein is involved in intracellular trafficking, control of SNARE (soluble NSF attachment protein receptor) complex assembly, and the release of cytotoxic granules by natural killer cells. Mutations in this gene are associated with familial hemophagocytic lymphohistiocytosis. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jan 2013]

STXBP2 Gene-Disease associations (from GenCC):

familial hemophagocytic lymphohistiocytosis 5
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
hereditary hemophagocytic lymphohistiocytosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
microvillus inclusion disease
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

STXBP2 links:

ENSG00000268400 (HGNC:):

ENSG00000268400 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant 19-7639096-C-T is Benign according to our data. Variant chr19-7639096-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 260096.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00102 (156/152364) while in subpopulation EAS AF = 0.0264 (137/5186). AF 95% confidence interval is 0.0228. There are 2 homozygotes in GnomAd4. There are 90 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STXBP2	NM_006949.4 link	c.165C>T	p.Ile55Ile	synonymous_variant	Exon 3 of 19	ENST00000221283.10	NP_008880.2	Q15833-1Q53GF4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
STXBP2	ENST00000221283.10 link	c.165C>T	p.Ile55Ile	synonymous_variant	Exon 3 of 19	1	NM_006949.4	ENSP00000221283.4	Q15833-1
ENSG00000268400	ENST00000698368.1 link	n.*268C>T		non_coding_transcript_exon_variant	Exon 5 of 20			ENSP00000513686.1	A0A8V8TM65
ENSG00000268400	ENST00000698368.1 link	n.*268C>T		3_prime_UTR_variant	Exon 5 of 20			ENSP00000513686.1	A0A8V8TM65

Frequencies

GnomAD3 genomes

AF:

0.00104

AC:

158

AN:

152246

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.0262

Gnomad SAS

AF:

0.00165

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.00207

AC:

519

AN:

250734

AF XY:

0.00193

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.0263

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000442

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000639

AC:

934

AN:

1461840

Hom.:

Cov.:

AF XY:

0.000634

AC XY:

461

AN XY:

727208

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000671

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00142

AC:

AN:

26136

East Asian (EAS)

AF:

0.0187

AC:

741

AN:

39698

South Asian (SAS)

AF:

0.000406

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000324

AC:

AN:

1111994

Other (OTH)

AF:

0.00136

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

114

172

229

286

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.00102

AC:

156

AN:

152364

Hom.:

Cov.:

AF XY:

0.00121

AC XY:

AN XY:

74506

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41588

American (AMR)

AF:

0.000131

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

3472

East Asian (EAS)

AF:

0.0264

AC:

137

AN:

5186

South Asian (SAS)

AF:

0.00124

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68030

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000273

Hom.:

Bravo

AF:

0.00135

Asia WGS

AF:

0.00837

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 12, 2015

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Familial hemophagocytic lymphohistiocytosis 5

Benign:2

Apr 20, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Autoinflammatory syndrome

Benign:1

May 01, 2020

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Benign

0.84

PhyloP100

0.36

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=100/0

polymorphism

(source)

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over