rs77586767

Positions:

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2

The NM_001540.5(HSPB1):c.9G>A(p.Glu3=) variant causes a synonymous change. The variant allele was found at a frequency of 0.00461 in 1,602,454 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0031 ( 1 hom., cov: 33)

Exomes 𝑓: 0.0048 ( 25 hom. )

Consequence

HSPB1
NM_001540.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14

Conservation

PhyloP100: 3.60

Variant links:

Genes affected

HSPB1 (HGNC:5246): (heat shock protein family B (small) member 1) This gene encodes a member of the small heat shock protein (HSP20) family of proteins. In response to environmental stress, the encoded protein translocates from the cytoplasm to the nucleus and functions as a molecular chaperone that promotes the correct folding of other proteins. This protein plays an important role in the differentiation of a wide variety of cell types. Expression of this gene is correlated with poor clinical outcome in multiple human cancers, and the encoded protein may promote cancer cell proliferation and metastasis, while protecting cancer cells from apoptosis. Mutations in this gene have been identified in human patients with Charcot-Marie-Tooth disease and distal hereditary motor neuropathy. [provided by RefSeq, Aug 2017]

HSPB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -18 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.36).

BP6

Variant 7-76302721-G-A is Benign according to our data. Variant chr7-76302721-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 193215.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-76302721-G-A is described in Lovd as [Benign]. Variant chr7-76302721-G-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00313 (477/152354) while in subpopulation NFE AF= 0.00545 (371/68032). AF 95% confidence interval is 0.005. There are 1 homozygotes in gnomad4. There are 213 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 477 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HSPB1	NM_001540.5 linkuse as main transcript	c.9G>A	p.Glu3=	synonymous_variant	1/3	ENST00000248553.7	NP_001531.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HSPB1	ENST00000248553.7 linkuse as main transcript	c.9G>A	p.Glu3=	synonymous_variant	1/3	1	NM_001540.5	ENSP00000248553	P1

Frequencies

GnomAD3 genomes

AF:

0.00313

AC:

477

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000627

Gnomad AMI

AF:

0.00987

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00346

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00424

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00545

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.00366

AC:

863

AN:

235782

Hom.:

AF XY:

0.00358

AC XY:

467

AN XY:

130326

show subpopulations

Gnomad AFR exome

AF:

0.000634

Gnomad AMR exome

AF:

0.00102

Gnomad ASJ exome

AF:

0.00314

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000328

Gnomad FIN exome

AF:

0.00565

Gnomad NFE exome

AF:

0.00624

Gnomad OTH exome

AF:

0.00441

GnomAD4 exome

AF:

0.00476

AC:

6908

AN:

1450100

Hom.:

Cov.:

AF XY:

0.00476

AC XY:

3436

AN XY:

721834

show subpopulations

Gnomad4 AFR exome

AF:

0.000688

Gnomad4 AMR exome

AF:

0.00119

Gnomad4 ASJ exome

AF:

0.00325

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00497

Gnomad4 NFE exome

AF:

0.00569

Gnomad4 OTH exome

AF:

0.00336

GnomAD4 genome

AF:

0.00313

AC:

477

AN:

152354

Hom.:

Cov.:

AF XY:

0.00286

AC XY:

213

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.000625

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00346

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00424

Gnomad4 NFE

AF:

0.00545

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.00518

Hom.:

Bravo

AF:

0.00302

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00365

EpiControl

AF:

0.00486

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:14

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	HSPB1: BP4, BS1, BS2 -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
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	-	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 12, 2017	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 28, 2023	- -

not specified

Benign:2

Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Feb 27, 2015	- -

Charcot-Marie-Tooth disease

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Molecular Genetics Laboratory, London Health Sciences Centre

- -

HSPB1-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 12, 2020

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). -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 11, 2019

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. -

Charcot-Marie-Tooth disease axonal type 2F

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Neuronopathy, distal hereditary motor, type 2B

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Benign

0.97

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over