Genetic Variant SRD5A3:p.Arg142Gly (chr4-55364133-C-G) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_024592.5(SRD5A3):c.424C>G(p.Arg142Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

SRD5A3
NM_024592.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.46

Publications

4 publications found

Variant links:

Genes affected

SRD5A3 (HGNC:25812): (steroid 5 alpha-reductase 3) The protein encoded by this gene belongs to the steroid 5-alpha reductase family, and polyprenol reductase subfamily. It is involved in the production of androgen 5-alpha-dihydrotestosterone (DHT) from testosterone, and maintenance of the androgen-androgen receptor activation pathway. This protein is also necessary for the conversion of polyprenol into dolichol, which is required for the synthesis of dolichol-linked monosaccharides and the oligosaccharide precursor used for N-linked glycosylation of proteins. Mutations in this gene are associated with congenital disorder of glycosylation type Iq. [provided by RefSeq, Mar 2011]

SRD5A3 links:

ENSG00000288695 (HGNC:):

ENSG00000288695 links:

SRD5A3-AS1 (HGNC:44138): (SRD5A3 antisense RNA 1)

SRD5A3-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.97

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024592.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SRD5A3	NM_024592.5	MANE Select	c.424C>G	p.Arg142Gly	missense	Exon 3 of 5	NP_078868.1
	SRD5A3	NM_001410732.1		c.424C>G	p.Arg142Gly	missense	Exon 3 of 4	NP_001397661.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SRD5A3	ENST00000264228.9	TSL:1 MANE Select	c.424C>G	p.Arg142Gly	missense	Exon 3 of 5	ENSP00000264228.4
ENSG00000288695	ENST00000679707.1		c.424C>G	p.Arg142Gly	missense	Exon 3 of 6	ENSP00000505713.1
SRD5A3-AS1	ENST00000433175.6	TSL:1	n.1455G>C		non_coding_transcript_exon	Exon 5 of 5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74334

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.76

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.20

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.72

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.91

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.97

MetaSVM

Uncertain

0.056

MutationAssessor

Pathogenic

3.5

PhyloP100

2.5

PrimateAI

Benign

0.45

PROVEAN

Pathogenic

-6.3

REVEL

Uncertain

0.60

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.82

MutPred

0.72

Loss of stability (P = 0.0624)

MVP

0.79

MPC

0.91

ClinPred

0.98

GERP RS

4.6

Varity_R

0.75

gMVP

0.88

Mutation Taster

=50/50

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over