Variant 10-93074800-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_000783.4(CYP26A1):c.436C>A(p.Arg146Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 1,454,382 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

CYP26A1
NM_000783.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.19

Variant links:

Genes affected

CYP26A1 (HGNC:2603): (cytochrome P450 family 26 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 endoplasmic reticulum protein acts on retinoids, including all-trans-retinoic acid (RA), with both 4-hydroxylation and 18-hydroxylation activities. This enzyme regulates the cellular level of retinoic acid which is involved in regulation of gene expression in both embryonic and adult tissues. Two alternatively spliced transcript variants of this gene, which encode the distinct isoforms, have been reported. [provided by RefSeq, Jul 2008]

CYP26A1 links:

ENSG00000285846 (HGNC:):

ENSG00000285846 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.76

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CYP26A1	NM_000783.4 link	c.436C>A	p.Arg146Ser	missense_variant	Exon 3 of 7	ENST00000224356.5	NP_000774.2	O43174-1
CYP26A1	NM_057157.2 link	c.229C>A	p.Arg77Ser	missense_variant	Exon 3 of 7		NP_476498.1	O43174-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CYP26A1	ENST00000224356.5 link	c.436C>A	p.Arg146Ser	missense_variant	Exon 3 of 7	1	NM_000783.4	ENSP00000224356.4		O43174-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000131

AC:

AN:

1454382

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

723768

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000171

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.436C>A (p.R146S) alteration is located in exon 3 (coding exon 3) of the CYP26A1 gene. This alteration results from a C to A substitution at nucleotide position 436, causing the arginine (R) at amino acid position 146 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.46

.;T

Eigen

Benign

-0.053

Eigen_PC

Benign

0.082

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.036

MetaRNN

Pathogenic

0.76

D;D

MetaSVM

Benign

-0.73

MutationAssessor

Uncertain

2.1

.;M

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-3.4

D;D

REVEL

Uncertain

0.35

Sift

Benign

0.039

D;D

Sift4G

Benign

0.24

T;T

Polyphen

0.087

.;B

Vest4

0.78

MutPred

0.64

.;Loss of MoRF binding (P = 0.0253);

MVP

0.81

MPC

2.3

ClinPred

0.98

GERP RS

5.0

Varity_R

0.86

gMVP

0.79

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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