2-72132271-C-T

Position:

chr2-72132271-C-T

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_019885.4(CYP26B1):c.1495G>A(p.Glu499Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000139 in 1,604,930 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00082 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000067 ( 1 hom. )

Consequence

CYP26B1
NM_019885.4 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.30

Variant links:

Genes affected

CYP26B1 (HGNC:20581): (cytochrome P450 family 26 subfamily B member 1) This gene encodes a member of the cytochrome P450 superfamily. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. The encoded protein is localized to the endoplasmic reticulum, and functions as a critical regulator of all-trans retinoic acid levels by the specific inactivation of all-trans retinoic acid to hydroxylated forms. Mutations in this gene are associated with radiohumeral fusions and other skeletal and craniofacial anomalies, and increased levels of the encoded protein are associated with atherosclerotic lesions. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2013]

CYP26B1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005496025).

BP6

Variant 2-72132271-C-T is Benign according to our data. Variant chr2-72132271-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 775731.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 125 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP26B1	NM_019885.4 linkuse as main transcript	c.1495G>A	p.Glu499Lys	missense_variant	6/6	ENST00000001146.7	NP_063938.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYP26B1	ENST00000001146.7 linkuse as main transcript	c.1495G>A	p.Glu499Lys	missense_variant	6/6	1	NM_019885.4	ENSP00000001146	P1	Q9NR63-1
CYP26B1	ENST00000546307.5 linkuse as main transcript	c.1270G>A	p.Glu424Lys	missense_variant	5/5	1		ENSP00000443304		Q9NR63-2
CYP26B1	ENST00000412253.1 linkuse as main transcript	c.922G>A	p.Glu308Lys	missense_variant	5/5	1		ENSP00000401465

Frequencies

GnomAD3 genomes

AF:

0.000815

AC:

124

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00270

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

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:

0.00

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000183

AC:

AN:

230034

Hom.:

AF XY:

0.000153

AC XY:

AN XY:

124292

show subpopulations

Gnomad AFR exome

AF:

0.00223

Gnomad AMR exome

AF:

0.000155

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000707

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000290

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000675

AC:

AN:

1452638

Hom.:

Cov.:

AF XY:

0.0000624

AC XY:

AN XY:

721638

show subpopulations

Gnomad4 AFR exome

AF:

0.00201

Gnomad4 AMR exome

AF:

0.000186

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000254

Gnomad4 SAS exome

AF:

0.0000237

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000108

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.000821

AC:

125

AN:

152292

Hom.:

Cov.:

AF XY:

0.000873

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.00272

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000150

Hom.:

Bravo

AF:

0.000986

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000190

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 19, 2024

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

CYP26B1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 06, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 02, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.42

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.11

.;T;.

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.50

FATHMM_MKL

Benign

0.47

LIST_S2

Benign

0.26

T;T;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.0055

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

.;L;.

MutationTaster

Benign

0.98

D;D;D

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.53

N;N;N

REVEL

Benign

0.068

Sift

Benign

0.56

T;T;T

Sift4G

Benign

0.29

T;T;T

Polyphen

0.0

.;B;.

Vest4

0.075

MVP

0.51

MPC

0.32

ClinPred

0.0054

GERP RS

2.1

Varity_R

0.057

gMVP

0.73

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