19-7642116-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6

The NM_006949.4(STXBP2):c.661G>A(p.Glu221Lys) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000168 in 1,614,096 control chromosomes in the GnomAD database, including 1 homozygotes. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

STXBP2
NM_006949.4 missense, splice_region

Scores

Splicing: ADA: 0.6049

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 6.46

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: AD, AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Ambry Genetics, ClinGen, PanelApp Australia, 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: Likely_benign. The variant received -1 ACMG points.

BP6

Variant 19-7642116-G-A is Benign according to our data. Variant chr19-7642116-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 567849.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006949.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
STXBP2	NM_006949.4	MANE Select	c.661G>A	p.Glu221Lys	missense splice_region	Exon 8 of 19	NP_008880.2	Q15833-1
STXBP2	NM_001272034.2		c.694G>A	p.Glu232Lys	missense splice_region	Exon 8 of 19	NP_001258963.1	Q15833-3
STXBP2	NM_001127396.3		c.652G>A	p.Glu218Lys	missense splice_region	Exon 8 of 19	NP_001120868.1	Q15833-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
STXBP2	ENST00000221283.10	TSL:1 MANE Select	c.661G>A	p.Glu221Lys	missense splice_region	Exon 8 of 19	ENSP00000221283.4	Q15833-1
STXBP2	ENST00000414284.6	TSL:1	c.652G>A	p.Glu218Lys	missense splice_region	Exon 8 of 19	ENSP00000409471.1	Q15833-2
STXBP2	ENST00000597068.5	TSL:1	n.661G>A		splice_region non_coding_transcript_exon	Exon 8 of 19	ENSP00000471327.1	M0R0M7

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000191

Gnomad OTH

AF:

0.000958

GnomAD2 exomes

AF:

0.000139

AC:

AN:

250952

AF XY:

0.000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000521

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000172

AC:

252

AN:

1461824

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

117

AN XY:

727212

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.000425

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000198

AC:

220

AN:

1111998

Other (OTH)

AF:

0.000182

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000125

AC:

AN:

152272

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74442

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41554

American (AMR)

AF:

0.000131

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000191

AC:

AN:

68018

Other (OTH)

AF:

0.000948

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.000241

Hom.:

Bravo

AF:

0.000159

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial hemophagocytic lymphohistiocytosis 5 (1)

Inborn genetic diseases (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.35

BayesDel_addAF

Benign

-0.064

BayesDel_noAF

Uncertain

0.020

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.41

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.57

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.58

MetaSVM

Uncertain

0.0065

MutationAssessor

Benign

2.0

PhyloP100

6.5

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-2.8

REVEL

Uncertain

0.61

Sift

Benign

0.24

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.78

MVP

0.86

MPC

0.84

ClinPred

0.48

GERP RS

4.4

Varity_R

0.67

gMVP

0.61

Mutation Taster

=42/58

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.60

dbscSNV1_RF

Pathogenic

0.77

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

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over