chr10-102830737-C-A

Position:

chr10-102830737-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000369887.4(CYP17A1):c.1492G>T(p.Ala498Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000091 in 1,603,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

CYP17A1
ENST00000369887.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.62

Variant links:

Genes affected

CYP17A1 (HGNC:2593): (cytochrome P450 family 17 subfamily A member 1) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum. It has both 17alpha-hydroxylase and 17,20-lyase activities and is a key enzyme in the steroidogenic pathway that produces progestins, mineralocorticoids, glucocorticoids, androgens, and estrogens. Mutations in this gene are associated with isolated steroid-17 alpha-hydroxylase deficiency, 17-alpha-hydroxylase/17,20-lyase deficiency, pseudohermaphroditism, and adrenal hyperplasia. [provided by RefSeq, Jul 2008]

CYP17A1 links:

WBP1L (HGNC:23510): (WW domain binding protein 1 like) Predicted to enable ubiquitin protein ligase binding activity. Predicted to act upstream of or within CXCL12-activated CXCR4 signaling pathway; hemopoiesis; and positive regulation of protein ubiquitination. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

WBP1L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1768263).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP17A1	NM_000102.4 linkuse as main transcript	c.1492G>T	p.Ala498Ser	missense_variant	8/8	ENST00000369887.4	NP_000093.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYP17A1	ENST00000369887.4 linkuse as main transcript	c.1492G>T	p.Ala498Ser	missense_variant	8/8	1	NM_000102.4	ENSP00000358903	P3

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000951

AC:

AN:

241958

Hom.:

AF XY:

0.0000840

AC XY:

AN XY:

130968

show subpopulations

Gnomad AFR exome

AF:

0.0000656

Gnomad AMR exome

AF:

0.000178

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000138

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000916

AC:

133

AN:

1451588

Hom.:

Cov.:

AF XY:

0.0000886

AC XY:

AN XY:

722086

show subpopulations

Gnomad4 AFR exome

AF:

0.0000901

Gnomad4 AMR exome

AF:

0.000204

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000108

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000262

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:

0.0000824

Hom.:

Bravo

AF:

0.0000982

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 24, 2021

This sequence change replaces alanine with serine at codon 498 of the CYP17A1 protein (p.Ala498Ser). The alanine residue is highly conserved and there is a moderate physicochemical difference between alanine and serine. This variant is present in population databases (rs771259164, ExAC 0.02%). This variant has not been reported in the literature in individuals with CYP17A1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.41

.;.;T;.;.

Eigen

Benign

-0.0055

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.77

T;T;T;T;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.18

T;T;T;T;T

MetaSVM

Benign

-0.85

MutationAssessor

Uncertain

2.4

.;.;M;.;.

MutationTaster

Benign

0.99

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.73

.;.;N;.;.

REVEL

Benign

0.064

Sift

Benign

0.068

.;.;T;.;.

Sift4G

Benign

0.063

.;.;T;.;.

Polyphen

0.47

.;.;P;.;.

Vest4

0.22

MVP

0.77

MPC

0.33

ClinPred

0.068

GERP RS

5.6

Varity_R

0.23

gMVP

0.43

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