rs4628742

Variant names:

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_014365.3(HSPB8):c.582C>T(p.Thr194Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0139 in 1,614,058 control chromosomes in the GnomAD database, including 2,348 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.069 ( 1239 hom., cov: 32)

Exomes 𝑓: 0.0081 ( 1109 hom. )

Consequence

HSPB8
NM_014365.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 0.280

Publications

8 publications found

Variant links:

Genes affected

HSPB8 (HGNC:30171): (heat shock protein family B (small) member 8) The protein encoded by this gene belongs to the superfamily of small heat-shock proteins containing a conservative alpha-crystallin domain at the C-terminal part of the molecule. The expression of this gene in induced by estrogen in estrogen receptor-positive breast cancer cells, and this protein also functions as a chaperone in association with Bag3, a stimulator of macroautophagy. Thus, this gene appears to be involved in regulation of cell proliferation, apoptosis, and carcinogenesis, and mutations in this gene have been associated with different neuromuscular diseases, including Charcot-Marie-Tooth disease. [provided by RefSeq, Jul 2008]

HSPB8 Gene-Disease associations (from GenCC):

neuronopathy, distal hereditary motor, autosomal dominant
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
Charcot-Marie-Tooth disease axonal type 2L
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
neuronopathy, distal hereditary motor, type 2A
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
autosomal dominant distal axonal motor neuropathy-myofibrillar myopathy syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
distal hereditary motor neuropathy type 2
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

HSPB8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

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

BP6

Variant 12-119193849-C-T is Benign according to our data. Variant chr12-119193849-C-T is described in ClinVar as Benign. ClinVar VariationId is 260403.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.28 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.235 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014365.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HSPB8	NM_014365.3	MANE Select	c.582C>T	p.Thr194Thr	synonymous	Exon 3 of 3	NP_055180.1	Q9UJY1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
HSPB8	ENST00000281938.7	TSL:1 MANE Select	c.582C>T	p.Thr194Thr	synonymous	Exon 3 of 3	ENSP00000281938.3	Q9UJY1
HSPB8	ENST00000674763.1		c.285C>T	p.Thr95Thr	synonymous	Exon 3 of 3	ENSP00000502573.1	A0A6Q8PHB1
HSPB8	ENST00000674542.1		c.*125C>T		3_prime_UTR	Exon 2 of 2	ENSP00000502352.1	A0A6Q8PGM6

Frequencies

GnomAD3 genomes

AF:

0.0691

AC:

10515

AN:

152102

Hom.:

1230

Cov.:

show subpopulations

Gnomad AFR

AF:

0.239

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0225

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0183

Gnomad SAS

AF:

0.0108

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000706

Gnomad OTH

AF:

0.0435

GnomAD2 exomes

AF:

0.0206

AC:

5171

AN:

251490

AF XY:

0.0163

show subpopulations

Gnomad AFR exome

AF:

0.248

Gnomad AMR exome

AF:

0.0106

Gnomad ASJ exome

AF:

0.000198

Gnomad EAS exome

AF:

0.0191

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000659

Gnomad OTH exome

AF:

0.0101

GnomAD4 exome

AF:

0.00813

AC:

11884

AN:

1461838

Hom.:

1109

Cov.:

AF XY:

0.00732

AC XY:

5325

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.246

AC:

8220

AN:

33460

American (AMR)

AF:

0.0121

AC:

543

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.0198

AC:

787

AN:

39698

South Asian (SAS)

AF:

0.00925

AC:

798

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.0148

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000325

AC:

361

AN:

1112004

Other (OTH)

AF:

0.0180

AC:

1089

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

598

1196

1793

2391

2989

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

264

528

792

1056

1320

<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:

0.0693

AC:

10550

AN:

152220

Hom.:

1239

Cov.:

AF XY:

0.0674

AC XY:

5020

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.239

AC:

9919

AN:

41492

American (AMR)

AF:

0.0225

AC:

344

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.0184

AC:

AN:

5176

South Asian (SAS)

AF:

0.0106

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000706

AC:

AN:

68022

Other (OTH)

AF:

0.0430

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

411

823

1234

1646

2057

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

192

288

384

480

<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:

0.0267

Hom.:

737

Bravo

AF:

0.0783

Asia WGS

AF:

0.0360

AC:

124

AN:

3478

EpiCase

AF:

0.000654

EpiControl

AF:

0.000830

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (5)

Charcot-Marie-Tooth disease axonal type 2L (2)

not provided (2)

Neuronopathy, distal hereditary motor, type 2A (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

7.6

(source)

DANN

Benign

0.73

PhyloP100

0.28

Mutation Taster

=100/0

polymorphism (auto)

(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

Computational scores

Splicing

Publications

Other links and lift over