chr19-7647257-C-T

Position:

• chr19-7647257-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_006949.4(STXBP2):​c.1538+10C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00327 in 1,610,392 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0022 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0034 (11 hom.)
• Consequence: STXBP2 NM_006949.4 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: -1.99

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]

ENSG00000268400 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 19-7647257-C-T is Benign according to our data. Variant chr19-7647257-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 260090.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-7647257-C-T is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00217 (331/152266) while in subpopulation NFE AF= 0.00357 (243/67992). AF 95% confidence interval is 0.0032. There are 0 homozygotes in gnomad4. There are 154 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 11 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
STXBP2	NM_006949.4	c.1538+10C>T		intron_variant		ENST00000221283.10	NP_008880.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
STXBP2	ENST00000221283.10	c.1538+10C>T		intron_variant		1	NM_006949.4	ENSP00000221283.4
ENSG00000268400	ENST00000698368.1	n.*1641+10C>T		intron_variant				ENSP00000513686.1

Frequencies

GnomAD3 genomes AF: 0.00218 AC: 332 AN: 152148 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000869

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00249

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00186

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00359

Gnomad OTH AF: 0.000957

GnomAD3 exomes AF: 0.00176 AC: 414 AN: 235124 Hom.: 3 AF XY: 0.00180 AC XY: 233 AN XY: 129474

Gnomad AFR exome AF: 0.000928

Gnomad AMR exome AF: 0.00138

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000113

Gnomad SAS exome AF: 0.00129

Gnomad FIN exome AF: 0.000294

Gnomad NFE exome AF: 0.00283

Gnomad OTH exome AF: 0.00260

GnomAD4 exome AF: 0.00339 AC: 4942 AN: 1458126 Hom.: 11 Cov.: 29 AF XY: 0.00324 AC XY: 2353 AN XY: 725384

Gnomad4 AFR exome AF: 0.000688

Gnomad4 AMR exome AF: 0.00143

Gnomad4 ASJ exome AF: 0.0000384

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00158

Gnomad4 FIN exome AF: 0.000137

Gnomad4 NFE exome AF: 0.00406

Gnomad4 OTH exome AF: 0.00324

GnomAD4 genome AF: 0.00217 AC: 331 AN: 152266 Hom.: 0 Cov.: 33 AF XY: 0.00207 AC XY: 154 AN XY: 74462

Gnomad4 AFR AF: 0.000866

Gnomad4 AMR AF: 0.00248

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000194

Gnomad4 SAS AF: 0.00186

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.00357

Gnomad4 OTH AF: 0.000947

Alfa AF: 0.00126 Hom.: 0

Bravo AF: 0.00208

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:4

Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jun 17, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 31, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Apr 16, 2021	- -

not provided Benign:2

Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

Familial hemophagocytic lymphohistiocytosis 5 Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.019
DANN	Benign	0.81
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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

Other links and lift over

dbSNP: rs139200597; hg19: chr19-7712143;