16-30985738-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_025193.4(HSD3B7):c.80G>A(p.Arg27Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000578 in 1,607,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

HSD3B7
NM_025193.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.784

Variant links:

Genes affected

HSD3B7 (HGNC:18324): (hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 7) This gene encodes an enzyme which is involved in the initial stages of the synthesis of bile acids from cholesterol and a member of the short-chain dehydrogenase/reductase superfamily. The encoded protein is a membrane-associated endoplasmic reticulum protein which is active against 7-alpha hydrosylated sterol substrates. Mutations in this gene are associated with a congenital bile acid synthesis defect which leads to neonatal cholestasis, a form of progressive liver disease. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

HSD3B7 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.33505508).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HSD3B7	NM_025193.4 linkuse as main transcript	c.80G>A	p.Arg27Gln	missense_variant	2/7	ENST00000297679.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HSD3B7	ENST00000297679.10 linkuse as main transcript	c.80G>A	p.Arg27Gln	missense_variant	2/7	1	NM_025193.4	P1	Q9H2F3-1
	ENST00000624286.1 linkuse as main transcript	n.2533C>T		non_coding_transcript_exon_variant	1/1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152268

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000380

AC:

AN:

236632

Hom.:

AF XY:

0.0000389

AC XY:

AN XY:

128596

show subpopulations

Gnomad AFR exome

AF:

0.0000673

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000557

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000660

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000570

AC:

AN:

1455618

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

723768

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000227

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000693

Gnomad4 OTH exome

AF:

0.0000499

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152268

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000153

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2023

The c.80G>A (p.R27Q) alteration is located in exon 2 (coding exon 1) of the HSD3B7 gene. This alteration results from a G to A substitution at nucleotide position 80, causing the arginine (R) at amino acid position 27 to be replaced by a glutamine (Q). 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

0.10

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.25

Cadd

Benign

Dann

Uncertain

1.0

Eigen

Benign

-0.099

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.84

T;T;T;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.34

T;T;T;T

MetaSVM

Uncertain

-0.10

MutationAssessor

Benign

1.5

L;L;.;.

MutationTaster

Benign

0.97

D;D;D

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.4

N;N;.;.

REVEL

Benign

0.27

Sift

Benign

0.047

D;T;.;.

Sift4G

Benign

0.14

T;T;T;T

Polyphen

0.63

.;P;.;.

Vest4

0.28

MutPred

0.66

Loss of methylation at R27 (P = 0.2135);Loss of methylation at R27 (P = 0.2135);Loss of methylation at R27 (P = 0.2135);Loss of methylation at R27 (P = 0.2135);

MVP

0.89

MPC

0.33

ClinPred

0.12

GERP RS

3.8

Varity_R

0.18

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over