2-197488034-T-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_002156.5(HSPD1):c.1393A>G(p.Ile465Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000486 in 1,441,628 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. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000049 ( 0 hom. )

Consequence

HSPD1
NM_002156.5 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.52

Publications

1 publications found

Variant links:

Genes affected

HSPD1 (HGNC:5261): (heat shock protein family D (Hsp60) member 1) This gene encodes a member of the chaperonin family. The encoded mitochondrial protein may function as a signaling molecule in the innate immune system. This protein is essential for the folding and assembly of newly imported proteins in the mitochondria. This gene is adjacent to a related family member and the region between the 2 genes functions as a bidirectional promoter. Several pseudogenes have been associated with this gene. Two transcript variants encoding the same protein have been identified for this gene. Mutations associated with this gene cause autosomal recessive spastic paraplegia 13. [provided by RefSeq, Jun 2010]

HSPD1 Gene-Disease associations (from GenCC):

hereditary spastic paraplegia 13
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
hypomyelinating leukodystrophy 4
Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet, Ambry Genetics

HSPD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.13164139).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSPD1	NM_002156.5 link	c.1393A>G	p.Ile465Val	missense_variant, splice_region_variant	Exon 11 of 12	ENST00000388968.8	NP_002147.2
HSPD1	NM_199440.2 link	c.1393A>G	p.Ile465Val	missense_variant, splice_region_variant	Exon 11 of 12		NP_955472.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSPD1	ENST00000388968.8 link	c.1393A>G	p.Ile465Val	missense_variant, splice_region_variant	Exon 11 of 12	1	NM_002156.5	ENSP00000373620.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000442

AC:

AN:

226406

AF XY:

0.00000813

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000486

AC:

AN:

1441628

Hom.:

Cov.:

AF XY:

0.00000558

AC XY:

AN XY:

716786

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33158

American (AMR)

AF:

0.00

AC:

AN:

42996

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25852

East Asian (EAS)

AF:

0.00

AC:

AN:

39476

South Asian (SAS)

AF:

0.0000118

AC:

AN:

84968

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52780

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5602

European-Non Finnish (NFE)

AF:

0.00000456

AC:

AN:

1097268

Other (OTH)

AF:

0.0000168

AC:

AN:

59528

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.539

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.:

Alfa

AF:

0.0000331

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Spastic paraplegia

Uncertain:1

May 04, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces isoleucine with valine at codon 465 of the HSPD1 protein (p.Ile465Val). The isoleucine residue is moderately conserved and there is a small physicochemical difference between isoleucine and valine. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a HSPD1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies. In summary, this variant is a novel missense change that is not predicted to affect protein function. There is no indication that it causes disease, but the available evidence is currently insufficient to prove that conclusively. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.070

BayesDel_addAF

Benign

-0.077

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Benign

0.47

DEOGEN2

Benign

0.36

T;T

Eigen

Benign

-0.37

Eigen_PC

Benign

-0.13

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.81

.;T

M_CAP

Benign

0.0092

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-0.81

MutationAssessor

Benign

-0.34

N;N

PhyloP100

4.5

PrimateAI

Benign

0.46

PROVEAN

Benign

0.090

N;N

REVEL

Benign

0.28

Sift

Benign

1.0

T;T

Sift4G

Benign

0.88

T;T

Polyphen

0.0

B;B

Vest4

0.20

MutPred

0.65

Gain of MoRF binding (P = 0.0994);Gain of MoRF binding (P = 0.0994);

MVP

0.25

MPC

0.56

ClinPred

0.22

GERP RS

4.9

Varity_R

0.35

gMVP

0.42

Mutation Taster

=69/31

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over