dbSNP rs72553971: POR:c.-14+7298C>A (chr7-75914929-C-A) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBA1

The ENST00000439963.5(POR):c.-14+7298C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0402 in 152,492 control chromosomes in the GnomAD database, including 172 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.040 ( 170 hom., cov: 32)

Exomes 𝑓: 0.089 ( 2 hom. )

Consequence

POR
ENST00000439963.5 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.83

Publications

5 publications found

Variant links:

Genes affected

POR (HGNC:9208): (cytochrome p450 oxidoreductase) This gene encodes an endoplasmic reticulum membrane oxidoreductase that is essential for multiple metabolic processes, including reactions catalyzed by cytochrome P450 proteins for metabolism of steroid hormones, drugs and xenobiotics. The encoded protein has a flavin adenine dinucleotide (FAD)-binding domain and a flavodoxin-like domain which bind two cofactors, FAD and FMN, that allow it to donate electrons directly from NADPH to all microsomal P450 enzymes. Mutations in this gene cause a complex set of disorders, including apparent combined P450C17 and P450C21 deficiency, amenorrhea and disordered steroidogenesis, congenital adrenal hyperplasia and Antley-Bixler syndrome, that resemble those caused by defects in steroid metabolizing enzymes such as aromatase, 21-hydroxylase, and 17 alpha-hydroxylase. [provided by RefSeq, Aug 2020]

POR Gene-Disease associations (from GenCC):

Antley-Bixler syndrome with genital anomalies and disordered steroidogenesis
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia, Ambry Genetics
congenital adrenal hyperplasia due to cytochrome P450 oxidoreductase deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
Antley-Bixler syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

POR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

BA1

GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0606 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POR	NM_001395413.1 link	c.-264C>A		upstream_gene_variant		ENST00000461988.6	NP_001382342.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POR	ENST00000461988.6 link	c.-264C>A		upstream_gene_variant		1	NM_001395413.1	ENSP00000419970.2		P16435

Frequencies

GnomAD3 genomes

AF:

0.0402

AC:

6123

AN:

152212

Hom.:

170

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0107

Gnomad AMI

AF:

0.0340

Gnomad AMR

AF:

0.0320

Gnomad ASJ

AF:

0.0573

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0252

Gnomad FIN

AF:

0.0455

Gnomad MID

AF:

0.0854

Gnomad NFE

AF:

0.0621

Gnomad OTH

AF:

0.0482

GnomAD4 exome

AF:

0.0893

AC:

AN:

168

Hom.:

AF XY:

0.0917

AC XY:

AN XY:

120

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

American (AMR)

AF:

0.00

AC:

AN:

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

East Asian (EAS)

AF:

0.00

AC:

AN:

South Asian (SAS)

AF:

0.167

AC:

AN:

European-Finnish (FIN)

AF:

0.00

AC:

AN:

Middle Eastern (MID)

AC:

AN:

European-Non Finnish (NFE)

AF:

0.0985

AC:

AN:

132

Other (OTH)

AF:

0.125

AC:

AN:

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.552

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0402

AC:

6121

AN:

152324

Hom.:

170

Cov.:

AF XY:

0.0388

AC XY:

2890

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.0107

AC:

446

AN:

41578

American (AMR)

AF:

0.0320

AC:

490

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.0573

AC:

199

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.0252

AC:

122

AN:

4832

European-Finnish (FIN)

AF:

0.0455

AC:

483

AN:

10624

Middle Eastern (MID)

AF:

0.0816

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0621

AC:

4226

AN:

68022

Other (OTH)

AF:

0.0473

AC:

100

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

297

593

890

1186

1483

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

156

234

312

390

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0527

Hom.:

Bravo

AF:

0.0376

Asia WGS

AF:

0.0110

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

0.44

(source)

DANN

Benign

0.43

PhyloP100

-1.8

PromoterAI

-0.21

Neutral

(source)

Splicing

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over