rs121964897

Positions:

• chr1-119422523-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_000198.4(HSD3B2):​c.1022C>T​(p.Pro341Leu) variant causes a missense change involving the alteration of a 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: HSD3B2 NM_000198.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.29

Genes affected

HSD3B2 (HGNC:5218): (hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 2) The protein encoded by this gene is a bifunctional enzyme that catalyzes the oxidative conversion of delta(5)-ene-3-beta-hydroxy steroid, and the oxidative conversion of ketosteroids. It plays a crucial role in the biosynthesis of all classes of hormonal steroids. This gene is predominantly expressed in the adrenals and the gonads. Mutations in this gene are associated with 3-beta-hydroxysteroid dehydrogenase, type II, deficiency. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Oct 2009]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.994
• PP5: Variant 1-119422523-C-T is Pathogenic according to our data. Variant chr1-119422523-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 12194.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HSD3B2	NM_000198.4	c.1022C>T	p.Pro341Leu	missense_variant	4/4	ENST00000369416.4	NP_000189.1
HSD3B2	NM_001166120.2	c.1022C>T	p.Pro341Leu	missense_variant	4/4		NP_001159592.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HSD3B2	ENST00000369416.4	c.1022C>T	p.Pro341Leu	missense_variant	4/4	1	NM_000198.4	ENSP00000358424.3
HSD3B2	ENST00000543831.5	c.1022C>T	p.Pro341Leu	missense_variant	4/4	3		ENSP00000445122.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

3 beta-Hydroxysteroid dehydrogenase deficiency Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Apr 01, 2008

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.72
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T;T
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D;.
M_CAP	Pathogenic	0.42	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.8	H;H
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-8.6	D;D
REVEL	Pathogenic	0.88
Sift	Uncertain	0.0010	D;D
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;D
Vest4		0.95
MutPred		0.92		Gain of MoRF binding (P = 0.0516);Gain of MoRF binding (P = 0.0516);
MVP		1.0
MPC		0.92
ClinPred		1.0	D
GERP RS		4.3
Varity_R		0.69
gMVP		0.97

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: rs121964897; hg19: chr1-119965146;