6-33205686-T-C

Variant names:

• chr6-33205686-T-C
• rs1774986498
• NM_014234.5:c.527T>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PP3_Strong BS2

The NM_014234.5(HSD17B8):​c.527T>C​(p.Val176Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000685 in 1,460,770 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000068 (0 hom.)
• Consequence: HSD17B8 NM_014234.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.31

Genes affected

HSD17B8 (HGNC:3554): (hydroxysteroid 17-beta dehydrogenase 8) In mice, the Ke6 protein is a 17-beta-hydroxysteroid dehydrogenase that can regulate the concentration of biologically active estrogens and androgens. It is preferentially an oxidative enzyme and inactivates estradiol, testosterone, and dihydrotestosterone. However, the enzyme has some reductive activity and can synthesize estradiol from estrone. The protein encoded by this gene is similar to Ke6 and is a member of the short-chain dehydrogenase superfamily. An alternatively spliced transcript of this gene has been detected, but the full-length nature of this variant has not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.94
• BS2: High AC in GnomAdExome4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSD17B8	NM_014234.5	c.527T>C	p.Val176Ala	missense_variant	Exon 5 of 9	ENST00000374662.4	NP_055049.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSD17B8	ENST00000374662.4	c.527T>C	p.Val176Ala	missense_variant	Exon 5 of 9	1	NM_014234.5	ENSP00000363794.3
HSD17B8	ENST00000469186.1	n.691T>C		non_coding_transcript_exon_variant	Exon 4 of 7	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000685 AC: 10 AN: 1460770 Hom.: 0 Cov.: 34 AF XY: 0.00000413 AC XY: 3 AN XY: 726698

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000252

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.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 26, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.527T>C (p.V176A) alteration is located in exon 5 (coding exon 5) of the HSD17B8 gene. This alteration results from a T to C substitution at nucleotide position 527, causing the valine (V) at amino acid position 176 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.020	T
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Uncertain	0.77	D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Uncertain	0.40	D
MutationAssessor	Uncertain	2.3	M
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-3.9	D
REVEL	Pathogenic	0.82
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0050	D
Polyphen		0.67	P
Vest4		0.72
MutPred		0.85		Gain of ubiquitination at K173 (P = 0.0716);
MVP		0.79
MPC		1.0
ClinPred		0.99	D
GERP RS		4.5
Varity_R		0.82
gMVP		0.90

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1774986498; hg19: chr6-33173463;