chr4-55364133-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_024592.5(SRD5A3):​c.424C>T​(p.Arg142*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SRD5A3
NM_024592.5 stop_gained

Scores

2
3
2

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 2.46
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-AS1 (HGNC:44138): (SRD5A3 antisense RNA 1)

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 4-55364133-C-T is Pathogenic according to our data. Variant chr4-55364133-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 18406.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SRD5A3NM_024592.5 linkc.424C>T p.Arg142* stop_gained 3/5 ENST00000264228.9 NP_078868.1 Q9H8P0
SRD5A3NM_001410732.1 linkc.424C>T p.Arg142* stop_gained 3/4 NP_001397661.1
SRD5A3XM_017008601.2 linkc.289C>T p.Arg97* stop_gained 3/5 XP_016864090.1
SRD5A3XM_005265767.4 linkc.364+4645C>T intron_variant XP_005265824.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SRD5A3ENST00000264228.9 linkc.424C>T p.Arg142* stop_gained 3/51 NM_024592.5 ENSP00000264228.4 Q9H8P0
ENSG00000288695ENST00000679707.1 linkc.424C>T p.Arg142* stop_gained 3/6 ENSP00000505713.1 A0A7P0T9P9

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000410
AC:
6
AN:
1461890
Hom.:
0
Cov.:
31
AF XY:
0.00000550
AC XY:
4
AN XY:
727246
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000450
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
EpiCase
AF:
0.000109
EpiControl
AF:
0.00

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

SRD5A3-congenital disorder of glycosylation Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMJul 23, 2010- -
Abnormality of the nervous system Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingKariminejad - Najmabadi Pathology & Genetics CenterJul 10, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.63
D
BayesDel_noAF
Pathogenic
0.60
CADD
Pathogenic
35
DANN
Uncertain
1.0
Eigen
Uncertain
0.43
Eigen_PC
Benign
0.20
FATHMM_MKL
Uncertain
0.90
D
Vest4
0.45
GERP RS
4.6

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.

Other links and lift over

dbSNP: rs267607095; hg19: chr4-56230300; API