Genetic Variant HSPH1:p.Pro819Leu (chr13-31137439-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_006644.4(HSPH1):c.2456C>T(p.Pro819Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000093 in 1,613,372 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

HSPH1
NM_006644.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.83

Variant links:

Genes affected

HSPH1 (HGNC:16969): (heat shock protein family H (Hsp110) member 1) This gene encodes a member of the heat shock protein 70 family of proteins. The encoded protein functions as a nucleotide exchange factor for the molecular chaperone heat shock cognate 71 kDa protein (Hsc70). In addition, this protein plays a distinct but related role as a holdase that inhibits the aggregation of misfolded proteins, including the cystic fibrosis transmembrane conductance regulator (CFTR) protein. Elevated expression of this protein has been observed in numerous human cancers. [provided by RefSeq, Mar 2017]

HSPH1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.060691714).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSPH1	NM_006644.4 link	c.2456C>T	p.Pro819Leu	missense_variant	Exon 18 of 18	ENST00000320027.10	NP_006635.2	Q92598-1A0A024RDS1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
HSPH1	ENST00000320027.10 link	c.2456C>T	p.Pro819Leu	missense_variant	Exon 18 of 18	1	NM_006644.4	ENSP00000318687.5	Q92598-1
HSPH1	ENST00000602786.5 link	n.*1984C>T		non_coding_transcript_exon_variant	Exon 17 of 17	1		ENSP00000473512.1	R4GN69
HSPH1	ENST00000602786.5 link	n.*1984C>T		3_prime_UTR_variant	Exon 17 of 17	1		ENSP00000473512.1	R4GN69

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

151982

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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:

0.0000159

AC:

AN:

250954

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135634

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000218

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:

0.00000411

AC:

AN:

1461272

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726974

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000757

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152100

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74390

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000524

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 29, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2456C>T (p.P819L) alteration is located in exon 18 (coding exon 18) of the HSPH1 gene. This alteration results from a C to T substitution at nucleotide position 2456, causing the proline (P) at amino acid position 819 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.46

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.074

T;D;.;.;.

Eigen

Uncertain

0.31

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.87

D;D;D;D;D

M_CAP

Benign

0.0080

MetaRNN

Benign

0.061

T;T;T;T;T

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.3

.;M;.;.;.

PrimateAI

Benign

0.44

PROVEAN

Uncertain

-3.2

.;D;D;.;D

REVEL

Benign

0.096

Sift

Uncertain

0.0020

.;D;D;.;D

Sift4G

Uncertain

0.018

D;D;D;D;D

Polyphen

0.85, 0.12

.;P;.;.;B

Vest4

0.29

MutPred

0.22

.;Gain of catalytic residue at P819 (P = 0.1366);.;.;.;

MVP

0.53

MPC

0.44

ClinPred

0.61

GERP RS

5.8

Varity_R

0.090

gMVP

0.33

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