rs28943590

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_000414.4(HSD17B4):c.1280C>T(p.Ala427Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000626 in 1,581,978 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A427A) has been classified as Likely benign.

Frequency

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

Exomes 𝑓: 0.000063 ( 0 hom. )

Consequence

HSD17B4
NM_000414.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:3

Conservation

PhyloP100: 2.38

Publications

1 publications found

Variant links:

Genes affected

HSD17B4 (HGNC:5213): (hydroxysteroid 17-beta dehydrogenase 4) The protein encoded by this gene is a bifunctional enzyme that is involved in the peroxisomal beta-oxidation pathway for fatty acids. It also acts as a catalyst for the formation of 3-ketoacyl-CoA intermediates from both straight-chain and 2-methyl-branched-chain fatty acids. Defects in this gene that affect the peroxisomal fatty acid beta-oxidation activity are a cause of D-bifunctional protein deficiency (DBPD). An apparent pseudogene of this gene is present on chromosome 8. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

HSD17B4 Gene-Disease associations (from GenCC):

d-bifunctional protein deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Myriad Women’s Health, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
Perrault syndrome
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Perrault syndrome 1
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia

HSD17B4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.01742968).

BP6

Variant 5-119506836-C-T is Benign according to our data. Variant chr5-119506836-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 439793.

BS1

Variant frequency is greater than expected in population amr. GnomAdExome4 allele frequency = 0.0000629 (90/1429908) while in subpopulation AMR AF = 0.00193 (86/44618). AF 95% confidence interval is 0.0016. There are 0 homozygotes in GnomAdExome4. There are 31 alleles in the male GnomAdExome4 subpopulation. Median coverage is 24. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSD17B4	NM_000414.4 link	c.1280C>T	p.Ala427Val	missense_variant	Exon 15 of 24	ENST00000510025.7	NP_000405.1	P51659-1A0A0S2Z4J1B2R659

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSD17B4	ENST00000510025.7 link	c.1280C>T	p.Ala427Val	missense_variant	Exon 15 of 24	2	NM_000414.4	ENSP00000424940.3		P51659-1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152070

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000327

AC:

AN:

250798

AF XY:

0.000199

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00238

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:

0.0000629

AC:

AN:

1429908

Hom.:

Cov.:

AF XY:

0.0000434

AC XY:

AN XY:

713512

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32894

American (AMR)

AF:

0.00193

AC:

AN:

44618

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25858

East Asian (EAS)

AF:

0.00

AC:

AN:

39354

South Asian (SAS)

AF:

0.00

AC:

AN:

85458

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53218

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5388

European-Non Finnish (NFE)

AF:

0.00000277

AC:

AN:

1084008

Other (OTH)

AF:

0.0000169

AC:

AN:

59112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.434

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

AF:

0.0000592

AC:

AN:

152070

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74276

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41400

American (AMR)

AF:

0.000524

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10590

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.531

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000151

ExAC

AF:

0.000272

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Feb 13, 2018

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 23, 2020

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Ala452Val variant (rs28943590) has not been reported in the medical literature, or gene specific variation databases. This variant is listed in the Exome Aggregation Consortium Browser with a Latino population frequency of 0.3 percent (identified on 33 out of 11,186 chromosomes). The alanine at position 452 is moderately conserved (considering 12 species) (Alamut v2.8.1) and computational analyses of the effects of the p.Ala452Val variant on protein structure and function provide conflicting results (SIFT: tolerated, MutationTaster: disease causing, PolyPhen-2: benign). Altogether, there is not enough evidence to classify the p.Ala452Val variant with certainty. -

Oct 28, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 28649525, 22864515) -

not specified

Uncertain:1

Aug 27, 2019

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant classified as Uncertain Significance - Favor Benign. The p.Ala452Val variant in HSD17B4 has not been previously reported in individuals with Perrault syndrome, but has been identified in 0.2% (83/35360) of Latino chromosomes by gnomAD (http://gnomad.broadinstitute.org). Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In summary, while the clinical significance of this variant is uncertain, its frequency suggests that it is more likely to be benign. ACMG/AMP Criteria applied: BS1_Supporting. -

Bifunctional peroxisomal enzyme deficiency;C0685838:Perrault syndrome

Benign:1

Dec 20, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

HSD17B4-related disorder

Benign:1

Jul 08, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.15

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.18

T;.;T;.;.;.;T;.;T;.;.

Eigen

Benign

0.0094

Eigen_PC

Benign

0.12

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.92

.;D;D;.;D;D;D;D;D;D;D

M_CAP

Benign

0.044

MetaRNN

Benign

0.017

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.41

MutationAssessor

Uncertain

2.3

M;.;M;.;.;.;.;.;.;.;.

PhyloP100

2.4

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.5

N;N;.;.;N;.;.;.;N;N;.

REVEL

Uncertain

0.34

Sift

Benign

0.24

T;T;.;.;T;.;.;.;T;T;.

Sift4G

Benign

0.41

T;T;.;.;T;.;.;.;T;T;.

Polyphen

0.22

B;.;B;.;.;.;B;.;.;B;.

Vest4

0.43

MutPred

0.19

Gain of catalytic residue at A427 (P = 0.1137);.;Gain of catalytic residue at A427 (P = 0.1137);.;.;Gain of catalytic residue at A427 (P = 0.1137);.;.;.;.;.;

MVP

0.77

MPC

0.080

ClinPred

0.17

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.23

gMVP

0.65

Mutation Taster

=47/53

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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