Variant 2-31529382-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1PM2PP5_Very_Strong

The NM_000348.4(SRD5A2):c.623C>T(p.Thr208Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000547 in 1,461,642 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SRD5A2
NM_000348.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 4.00

Variant links:

Genes affected

SRD5A2 (HGNC:11285): (steroid 5 alpha-reductase 2) This gene encodes a microsomal protein expressed at high levels in androgen-sensitive tissues such as the prostate. The encoded protein is active at acidic pH and is sensitive to the 4-azasteroid inhibitor finasteride. Deficiencies in this gene can result in male pseudohermaphroditism, specifically pseudovaginal perineoscrotal hypospadias (PPSH). [provided by RefSeq, Jul 2008]

SRD5A2 links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 2 uncertain in NM_000348.4

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 2-31529382-G-A is Pathogenic according to our data. Variant chr2-31529382-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 459641.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-31529382-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SRD5A2	NM_000348.4 linkuse as main transcript	c.623C>T	p.Thr208Ile	missense_variant	4/5	ENST00000622030.2
SRD5A2	XM_011533069.3 linkuse as main transcript	c.401C>T	p.Thr134Ile	missense_variant	4/5
SRD5A2	XM_011533072.3 linkuse as main transcript	c.368C>T	p.Thr123Ile	missense_variant	6/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRD5A2	ENST00000622030.2 linkuse as main transcript	c.623C>T	p.Thr208Ile	missense_variant	4/5	1	NM_000348.4	P1
	ENST00000435713.1 linkuse as main transcript	n.255+1682G>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248926

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135052

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461642

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727094

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000827

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

3-Oxo-5 alpha-steroid delta 4-dehydrogenase deficiency

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Feb 19, 2021	This variant has been observed in individual(s) with clinical features of SRD5A2-related conditions (PMID: 31186340, 30968598, Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 459641). For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SRD5A2 protein function. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change replaces threonine with isoleucine at codon 208 of the SRD5A2 protein (p.Thr208Ile). The threonine residue is highly conserved and there is a moderate physicochemical difference between threonine and isoleucine. -
Likely pathogenic, criteria provided, single submitter	clinical testing	MGZ Medical Genetics Center	Aug 18, 2021	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.51

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.35

CADD

Benign

DANN

Benign

0.74

FATHMM_MKL

Uncertain

0.78

MetaRNN

Uncertain

0.68

PrimateAI

Benign

0.42

Sift4G

Uncertain

0.051

Vest4

0.67

MVP

0.56

GERP RS

4.8

gMVP

0.93

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

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