Genetic Variant HSD17B12:p.Ala123Val (chr11-43798404-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_016142.3(HSD17B12):c.368C>T(p.Ala123Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000617 in 1,458,232 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

HSD17B12
NM_016142.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.670

Publications

0 publications found

Variant links:

Genes affected

HSD17B12 (HGNC:18646): (hydroxysteroid 17-beta dehydrogenase 12) This gene encodes a very important 17beta-hydroxysteroid dehydrogenase (17beta-HSD) that converts estrone into estradiol in ovarian tissue. This enzyme is also involved in fatty acid elongation. [provided by RefSeq, Oct 2011]

HSD17B12 links:

ENSG00000283341 (HGNC:):

ENSG00000283341 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10917747).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSD17B12	NM_016142.3 link	c.368C>T	p.Ala123Val	missense_variant	Exon 4 of 11	ENST00000278353.10	NP_057226.1	Q53GQ0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSD17B12	ENST00000278353.10 link	c.368C>T	p.Ala123Val	missense_variant	Exon 4 of 11	1	NM_016142.3	ENSP00000278353.4		Q53GQ0-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000120

AC:

AN:

250208

AF XY:

0.0000222

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000617

AC:

AN:

1458232

Hom.:

Cov.:

AF XY:

0.00000827

AC XY:

AN XY:

725612

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33372

American (AMR)

AF:

0.00

AC:

AN:

44528

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26058

East Asian (EAS)

AF:

0.00

AC:

AN:

39562

South Asian (SAS)

AF:

0.000105

AC:

AN:

86096

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53152

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1109456

Other (OTH)

AF:

0.00

AC:

AN:

60268

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000226), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.369

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 15, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.368C>T (p.A123V) alteration is located in exon 4 (coding exon 4) of the HSD17B12 gene. This alteration results from a C to T substitution at nucleotide position 368, causing the alanine (A) at amino acid position 123 to be replaced by a valine (V). 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

Benign

0.12

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.26

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.40

T;T;T

Eigen

Benign

-0.48

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.73

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Uncertain

0.096

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-0.35

MutationAssessor

Benign

0.83

L;.;.

PhyloP100

0.67

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.9

N;N;.

REVEL

Benign

0.20

Sift

Benign

0.17

T;T;.

Sift4G

Benign

0.17

T;T;.

Polyphen

0.099

B;.;.

Vest4

0.37

MutPred

0.50

Loss of catalytic residue at A123 (P = 0.1231);.;.;

MVP

0.80

MPC

0.30

ClinPred

0.093

GERP RS

1.9

Varity_R

0.026

gMVP

0.62

Mutation Taster

=92/8

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

11-43798404-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over