chr2-197495386-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_002156.5(HSPD1):c.428-10G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00258 in 1,523,648 control chromosomes in the GnomAD database, including 78 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 41 hom., cov: 32)

Exomes 𝑓: 0.0015 ( 37 hom. )

Consequence

HSPD1
NM_002156.5 intron

Scores

Splicing: ADA: 0.00007913

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.131

Publications

3 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: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

BP6

Variant 2-197495386-C-T is Benign according to our data. Variant chr2-197495386-C-T is described in ClinVar as Benign. ClinVar VariationId is 137566.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0125 (1904/151916) while in subpopulation AFR AF = 0.0439 (1817/41392). AF 95% confidence interval is 0.0422. There are 41 homozygotes in GnomAd4. There are 907 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 41 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSPD1	NM_002156.5 link	c.428-10G>A		intron_variant	Intron 3 of 11	ENST00000388968.8	NP_002147.2	P10809-1A0A024R3X4
HSPD1	NM_199440.2 link	c.428-10G>A		intron_variant	Intron 3 of 11		NP_955472.1	P10809-1A0A024R3X4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSPD1	ENST00000388968.8 link	c.428-10G>A		intron_variant	Intron 3 of 11	1	NM_002156.5	ENSP00000373620.3		P10809-1

Frequencies

GnomAD3 genomes

AF:

0.0125

AC:

1897

AN:

151800

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0439

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00374

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:

0.000162

Gnomad OTH

AF:

0.00910

GnomAD2 exomes

AF:

0.00345

AC:

866

AN:

251326

AF XY:

0.00251

show subpopulations

Gnomad AFR exome

AF:

0.0460

Gnomad AMR exome

AF:

0.00257

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00148

AC:

2025

AN:

1371732

Hom.:

Cov.:

AF XY:

0.00126

AC XY:

867

AN XY:

687740

show subpopulations

African (AFR)

AF:

0.0476

AC:

1507

AN:

31652

American (AMR)

AF:

0.00300

AC:

134

AN:

44620

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25574

East Asian (EAS)

AF:

0.00

AC:

AN:

39242

South Asian (SAS)

AF:

0.000130

AC:

AN:

84466

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53384

Middle Eastern (MID)

AF:

0.00286

AC:

AN:

5590

European-Non Finnish (NFE)

AF:

0.000152

AC:

157

AN:

1029814

Other (OTH)

AF:

0.00348

AC:

200

AN:

57390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

166

249

332

415

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

150

200

250

<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:

0.0125

AC:

1904

AN:

151916

Hom.:

Cov.:

AF XY:

0.0122

AC XY:

907

AN XY:

74206

show subpopulations

African (AFR)

AF:

0.0439

AC:

1817

AN:

41392

American (AMR)

AF:

0.00374

AC:

AN:

15258

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10502

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

67982

Other (OTH)

AF:

0.00900

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

194

291

388

485

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.0101

Hom.:

Bravo

AF:

0.0144

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Jul 30, 2024

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 11, 2013

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Spastic paraplegia

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hereditary spastic paraplegia 13

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Hereditary spastic paraplegia

Benign:1

May 14, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

7.2

(source)

DANN

Benign

0.64

PhyloP100

0.13

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000079

dbscSNV1_RF

Benign

0.0080

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over