rs104894148

Variant names:

• chr10-102835343-T-A
• rs104894148
• NM_000102.4:c.347A>T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PP2 PP3_Strong PP5

The NM_000102.4(CYP17A1):​c.347A>T​(p.Asp116Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,108 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 (no stars). Synonymous variant affecting the same amino acid position (i.e. D116D) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: CYP17A1 NM_000102.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 3.28
• Publications: 6 publications found

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 Gene-Disease associations (from GenCC):

• congenital adrenal hyperplasia due to 17-alpha-hydroxylase deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• 46,XY disorder of sex development due to isolated 17,20-lyase deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_000102.4
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 48 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 1.2356 (below the threshold of 3.09). Trascript score misZ: 1.3377 (below the threshold of 3.09). GenCC associations: The gene is linked to congenital adrenal hyperplasia due to 17-alpha-hydroxylase deficiency, 46,XY disorder of sex development due to isolated 17,20-lyase deficiency.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.989
• PP5: Variant 10-102835343-T-A is Pathogenic according to our data. Variant chr10-102835343-T-A is described in ClinVar as Pathogenic. ClinVar VariationId is 1793.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP17A1	NM_000102.4	c.347A>T	p.Asp116Val	missense_variant	Exon 2 of 8	ENST00000369887.4	NP_000093.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP17A1	ENST00000369887.4	c.347A>T	p.Asp116Val	missense_variant	Exon 2 of 8	1	NM_000102.4	ENSP00000358903.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459108 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726130

African (AFR) AF: 0.00 AC: 0 AN: 33422

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39688

South Asian (SAS) AF: 0.00 AC: 0 AN: 86202

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1109488

Other (OTH) AF: 0.00 AC: 0 AN: 60278

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

17-alpha-hydroxylase/17,20-lyase deficiency, combined partial Pathogenic:1

Dec 01, 2002

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.77
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.80	.;.;D;.
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.91	D;D;D;D
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.99	D;D;D;D
MetaSVM	Uncertain	-0.066	T
MutationAssessor	Pathogenic	3.5	.;.;H;.
PhyloP100		3.3
PrimateAI	Benign	0.35	T
PROVEAN	Pathogenic	-6.0	.;.;D;.
REVEL	Uncertain	0.62
Sift	Pathogenic	0.0	.;.;D;.
Sift4G	Pathogenic	0.0010	.;.;D;.
Polyphen		1.0	.;.;D;.
Vest4		0.90
MutPred		0.90		Gain of MoRF binding (P = 0.0284);Gain of MoRF binding (P = 0.0284);Gain of MoRF binding (P = 0.0284);Gain of MoRF binding (P = 0.0284);
MVP		0.90
MPC		1.1
ClinPred		0.97	D
GERP RS		5.8
Varity_R		0.69
gMVP		0.72
Mutation Taster		=26/74	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs104894148; hg19: chr10-104595100;