chr5-119452578-G-A

Position:

• chr5-119452578-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1 PS1_Moderate PM2 PP5_Moderate

The NM_000414.4(HSD17B4):​c.3G>A​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HSD17B4 NM_000414.4 start_lost
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 2.81

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 Pathogenic. Variant got 14 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PS1: Another start lost variant in NM_000414.4 (HSD17B4) was described as [Likely_pathogenic] in ClinVar as 859562
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 5-119452578-G-A is Pathogenic according to our data. Variant chr5-119452578-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 225388.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSD17B4	NM_000414.4	c.3G>A	p.Met1?	start_lost	1/24	ENST00000510025.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSD17B4	ENST00000510025.7	c.3G>A	p.Met1?	start_lost	1/24	2	NM_000414.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Bifunctional peroxisomal enzyme deficiency;C4551721:Perrault syndrome 1 Pathogenic:1

Likely pathogenic, criteria provided, single submitter

reference population

Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center

Mar 18, 2016

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.23	T;.;.;T;.
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.90	.;D;D;D;D
M_CAP	Pathogenic	0.71	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D
MetaSVM	Uncertain	0.32	D
MutationTaster	Benign	1.0	D;D;D;D
PROVEAN	Benign	-1.4	N;.;N;N;.
REVEL	Pathogenic	0.70
Sift	Pathogenic	0.0	D;.;D;D;.
Sift4G	Uncertain	0.040	D;.;D;.;.
Polyphen		1.0	D;.;.;D;.
Vest4		0.77
MutPred		0.97		Loss of MoRF binding (P = 0.0963);Loss of MoRF binding (P = 0.0963);Loss of MoRF binding (P = 0.0963);Loss of MoRF binding (P = 0.0963);Loss of MoRF binding (P = 0.0963);
MVP		0.85
ClinPred		1.0	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.95

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: rs1085307072; hg19: chr5-118788273;