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GeneBe

rs146000958

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_014365.3(HSPB8):c.319C>G(p.Pro107Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000188 in 1,596,528 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P107S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

HSPB8
NM_014365.3 missense

Scores

6
7
6

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.48
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.784

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
HSPB8NM_014365.3 linkuse as main transcriptc.319C>G p.Pro107Ala missense_variant 1/3 ENST00000281938.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
HSPB8ENST00000281938.7 linkuse as main transcriptc.319C>G p.Pro107Ala missense_variant 1/31 NM_014365.3 P1
HSPB8ENST00000541798.1 linkuse as main transcriptc.43C>G p.Pro15Ala missense_variant 1/43
HSPB8ENST00000674542.1 linkuse as main transcriptc.319C>G p.Pro107Ala missense_variant 1/2
HSPB8ENST00000676244.1 linkuse as main transcriptn.73+5633C>G intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152118
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000843
AC:
2
AN:
237120
Hom.:
0
AF XY:
0.00000782
AC XY:
1
AN XY:
127870
show subpopulations
Gnomad AFR exome
AF:
0.000125
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.92e-7
AC:
1
AN:
1444410
Hom.:
0
Cov.:
31
AF XY:
0.00000140
AC XY:
1
AN XY:
716768
show subpopulations
Gnomad4 AFR exome
AF:
0.0000305
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152118
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74288
show subpopulations
Gnomad4 AFR
AF:
0.0000483
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000113
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.30
BayesDel_addAF
Uncertain
0.029
T
BayesDel_noAF
Uncertain
0.040
Cadd
Pathogenic
28
Dann
Uncertain
0.98
DEOGEN2
Pathogenic
0.90
D
Eigen
Uncertain
0.36
Eigen_PC
Uncertain
0.40
FATHMM_MKL
Benign
0.56
D
LIST_S2
Uncertain
0.88
D
M_CAP
Benign
0.082
D
MetaRNN
Pathogenic
0.78
D
MetaSVM
Benign
-0.45
T
MutationAssessor
Uncertain
2.4
M
MutationTaster
Benign
1.0
D
PrimateAI
Pathogenic
0.83
D
PROVEAN
Pathogenic
-7.0
D
REVEL
Pathogenic
0.69
Sift
Pathogenic
0.0
D
Sift4G
Benign
0.073
T
Polyphen
0.66
P
Vest4
0.56
MutPred
0.82
Gain of catalytic residue at F105 (P = 0.0019);
MVP
0.95
MPC
0.27
ClinPred
0.89
D
GERP RS
4.2
Varity_R
0.84
gMVP
0.74

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.

Other links and lift over

dbSNP: rs146000958; hg19: chr12-119617436; API