rs57972893

Positions:

• chr5-119499403-G-A

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BS1 BS2

The NM_000414.4(HSD17B4):​c.1059G>A​(p.Ala353=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000545 in 1,613,486 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. A353A) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0025 (2 hom., cov: 32)
  • Exomes 𝑓: 0.00034 (5 hom.)
• Consequence: HSD17B4 NM_000414.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 0.511

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]

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP6: Variant 5-119499403-G-A is Benign according to our data. Variant chr5-119499403-G-A is described in ClinVar as [Benign]. Clinvar id is 226664.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-119499403-G-A is described in Lovd as [Benign].
• BP7: Synonymous conserved (PhyloP=0.511 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0025 (381/152192) while in subpopulation AFR AF= 0.00877 (364/41528). AF 95% confidence interval is 0.00802. There are 2 homozygotes in gnomad4. There are 192 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSD17B4	NM_000414.4	c.1059G>A	p.Ala353=	synonymous_variant	13/24	ENST00000510025.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSD17B4	ENST00000510025.7	c.1059G>A	p.Ala353=	synonymous_variant	13/24	2	NM_000414.4	P1

Frequencies

GnomAD3 genomes AF: 0.00251 AC: 382 AN: 152074 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.00882

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.000958

GnomAD3 exomes AF: 0.000852 AC: 214 AN: 251124 Hom.: 1 AF XY: 0.000582 AC XY: 79 AN XY: 135696

Gnomad AFR exome AF: 0.0108

Gnomad AMR exome AF: 0.000463

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000653

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000176

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000341 AC: 498 AN: 1461294 Hom.: 5 Cov.: 30 AF XY: 0.000297 AC XY: 216 AN XY: 727032

Gnomad4 AFR exome AF: 0.0100

Gnomad4 AMR exome AF: 0.000492

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.0000348

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000792

Gnomad4 OTH exome AF: 0.000712

GnomAD4 genome AF: 0.00250 AC: 381 AN: 152192 Hom.: 2 Cov.: 32 AF XY: 0.00258 AC XY: 192 AN XY: 74412

Gnomad4 AFR AF: 0.00877

Gnomad4 AMR AF: 0.000393

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000118

Gnomad4 OTH AF: 0.000948

Alfa AF: 0.00144 Hom.: 0

Bravo AF: 0.00294

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.000178

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Bifunctional peroxisomal enzyme deficiency Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 28, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Nov 24, 2014

Ala378Ala in exon 14 of HSD17B4: This variant is not expected to have clinical s ignificance because it does not alter an amino acid residue and is not located w ithin the splice consensus sequence. It has been identified in 1.0% (42/4404) of African American chromosomes from a broad population by the NHLBI Exome Sequenc ing Project (http://evs.gs.washington.edu/EVS; dbSNP rs57972893). -

Bifunctional peroxisomal enzyme deficiency;C0685838:Perrault syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 31, 2024

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

May 23, 2019

- -

Perrault syndrome 1 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 28, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	6.8
DANN	Benign	0.64
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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

Other links and lift over

dbSNP: rs57972893; hg19: chr5-118835098;