Variant 10-93075184-C-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The ENST00000224356.5(CYP26A1):c.741C>G(p.Ile247Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,418 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: 0.0000075 ( 0 hom. )

Consequence

CYP26A1
ENST00000224356.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.116

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:

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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, 0.776

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP26A1	NM_000783.4 linkuse as main transcript	c.741C>G	p.Ile247Met	missense_variant	4/7	ENST00000224356.5	NP_000774.2
CYP26A1	NM_057157.2 linkuse as main transcript	c.534C>G	p.Ile178Met	missense_variant	4/7		NP_476498.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYP26A1	ENST00000224356.5 linkuse as main transcript	c.741C>G	p.Ile247Met	missense_variant	4/7	1	NM_000783.4	ENSP00000224356	P1	O43174-1
CYP26A1	ENST00000371531.5 linkuse as main transcript	c.534C>G	p.Ile178Met	missense_variant	4/7	2		ENSP00000360586		O43174-2
CYP26A1	ENST00000622925.1 linkuse as main transcript	n.677C>G		non_coding_transcript_exon_variant	3/3	2
CYP26A1	ENST00000624589.3 linkuse as main transcript	c.514C>G	p.Arg172Gly	missense_variant, NMD_transcript_variant	3/6	5		ENSP00000485126

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

249982

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135550

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461418

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727048

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:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 31, 2022

The c.741C>G (p.I247M) alteration is located in exon 4 (coding exon 4) of the CYP26A1 gene. This alteration results from a C to G substitution at nucleotide position 741, causing the isoleucine (I) at amino acid position 247 to be replaced by a methionine (M). 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

Benign

0.22

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.030

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.080

.;T

Eigen

Benign

0.11

Eigen_PC

Benign

0.14

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.057

MetaRNN

Pathogenic

0.78

D;D

MetaSVM

Benign

-0.57

MutationAssessor

Benign

1.6

.;L

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.060

N;N

REVEL

Uncertain

0.38

Sift

Benign

0.36

T;T

Sift4G

Benign

0.45

T;T

Polyphen

0.67

.;P

Vest4

0.84

MutPred

0.67

.;Gain of methylation at R246 (P = 0.07);

MVP

0.85

MPC

0.76

ClinPred

0.43

GERP RS

4.4

Varity_R

0.24

gMVP

0.78

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