Genetic Variant HSPBAP1:p.Pro402Gln (chr3-122740607-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_024610.6(HSPBAP1):c.1205C>A(p.Pro402Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign 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. P402L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

HSPBAP1
NM_024610.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.466

Publications

0 publications found

Variant links:

Genes affected

HSPBAP1 (HGNC:16389): (HSPB1 associated protein 1) This gene encodes a protein that binds to one of the small heat shock proteins, specifically hsp27. Hsp27 is involved with cell growth and differentiation. This encoded protein was found to be abnormally expressed in patients with intractable epilepsy, although how brain function is affected remains unknown. [provided by RefSeq, Sep 2011]

HSPBAP1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06320447).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024610.6. 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
	HSPBAP1	NM_024610.6	MANE Select	c.1205C>A	p.Pro402Gln	missense	Exon 8 of 8	NP_078886.2
	HSPBAP1	NM_001320728.2		c.1121C>A	p.Pro374Gln	missense	Exon 7 of 7	NP_001307657.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
HSPBAP1	ENST00000306103.3	TSL:1 MANE Select	c.1205C>A	p.Pro402Gln	missense	Exon 8 of 8	ENSP00000302562.2	Q96EW2-1
HSPBAP1	ENST00000471534.1	TSL:1	n.1043C>A		non_coding_transcript_exon	Exon 2 of 2
HSPBAP1	ENST00000936102.1		c.1217C>A	p.Pro406Gln	missense	Exon 8 of 8	ENSP00000606161.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112002

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.60

CADD

Benign

2.5

(source)

DANN

Benign

0.59

DEOGEN2

Benign

0.0013

Eigen

Benign

-0.92

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.54

M_CAP

Benign

0.0056

MetaRNN

Benign

0.063

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

PhyloP100

0.47

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.77

REVEL

Benign

0.047

Sift

Benign

0.35

Sift4G

Benign

0.55

Polyphen

0.80

Vest4

0.11

MutPred

0.19

Loss of catalytic residue at P402 (P = 0.0088)

MVP

0.26

MPC

0.21

ClinPred

0.18

GERP RS

0.56

Varity_R

0.020

gMVP

0.17

Mutation Taster

=96/4

polymorphism

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over