X-53431505-C-T

Position:

• chrX-53431505-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_004493.3(HSD17B10):​c.685G>A​(p.Asp229Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000182 in 1,096,953 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0000018 (0 hom. 0 hem.)
• Consequence: HSD17B10 NM_004493.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.05

Genes affected

HSD17B10 (HGNC:4800): (hydroxysteroid 17-beta dehydrogenase 10) This gene encodes 3-hydroxyacyl-CoA dehydrogenase type II, a member of the short-chain dehydrogenase/reductase superfamily. The gene product is a mitochondrial protein that catalyzes the oxidation of a wide variety of fatty acids and steroids, and is a subunit of mitochondrial ribonuclease P, which is involved in tRNA maturation. The protein has been implicated in the development of Alzheimer disease, and mutations in the gene are the cause of 17beta-hydroxysteroid dehydrogenase type 10 (HSD10) deficiency. Several alternatively spliced transcript variants have been identified, but the full-length nature of only two transcript variants has been determined. [provided by RefSeq, Aug 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM1: In a chain 3-hydroxyacyl-CoA dehydrogenase type-2 (size 259) in uniprot entity HCD2_HUMAN there are 20 pathogenic changes around while only 6 benign (77%) in NM_004493.3
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19590008).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSD17B10	NM_004493.3	c.685G>A	p.Asp229Asn	missense_variant	6/6	ENST00000168216.11
HSD17B10	NM_001037811.2	c.658G>A	p.Asp220Asn	missense_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSD17B10	ENST00000168216.11	c.685G>A	p.Asp229Asn	missense_variant	6/6	1	NM_004493.3	P1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome AF: 0.00000182 AC: 2 AN: 1096953 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 362317

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000568

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 22

Bravo AF: 0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 08, 2024

The c.685G>A (p.D229N) alteration is located in exon 6 (coding exon 6) of the HSD17B10 gene. This alteration results from a G to A substitution at nucleotide position 685, causing the aspartic acid (D) at amino acid position 229 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 18, 2022

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 229 of the HSD17B10 protein (p.Asp229Asn). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with HSD17B10-related conditions. 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. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	13
DANN	Benign	0.96
DEOGEN2	Benign	0.12	.;T
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.037	D
MetaRNN	Benign	0.20	T;T
MetaSVM	Benign	-0.41	T
MutationAssessor	Benign	0.58	.;N
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.21	N;N
REVEL	Benign	0.24
Sift	Benign	0.32	T;T
Sift4G	Benign	0.45	T;T
Polyphen		0.0	B;B
Vest4		0.12
MutPred		0.35		.;Gain of catalytic residue at D229 (P = 0.0603);
MVP		0.79
MPC		1.7
ClinPred		0.21	T
GERP RS		4.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.19
gMVP		0.88

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		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: rs931676673; hg19: chrX-53458453;