2-72132353-G-C

Position:

chr2-72132353-G-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_019885.4(CYP26B1):c.1413C>G(p.Phe471Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000013 in 1,611,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

CYP26B1
NM_019885.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.26

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 Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2343567).

BS2

High AC in GnomAdExome4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP26B1	NM_019885.4 linkuse as main transcript	c.1413C>G	p.Phe471Leu	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.1413C>G	p.Phe471Leu	missense_variant	6/6	1	NM_019885.4	ENSP00000001146	P1	Q9NR63-1
CYP26B1	ENST00000546307.5 linkuse as main transcript	c.1188C>G	p.Phe396Leu	missense_variant	5/5	1		ENSP00000443304		Q9NR63-2
CYP26B1	ENST00000412253.1 linkuse as main transcript	c.840C>G	p.Phe280Leu	missense_variant	5/5	1		ENSP00000401465

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000811

AC:

AN:

246560

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

133672

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000548

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000481

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1458820

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

725194

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000132

Gnomad4 NFE exome

AF:

0.00000991

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000540

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 07, 2023

This sequence change replaces phenylalanine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 471 of the CYP26B1 protein (p.Phe471Leu). This variant is present in population databases (rs764995614, gnomAD 0.005%). This variant has not been reported in the literature in individuals affected with CYP26B1-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Benign

-0.077

BayesDel_noAF

Benign

-0.18

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

.;T;.

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.096

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.76

T;T;T

M_CAP

Benign

0.034

MetaRNN

Benign

0.23

T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Uncertain

2.1

.;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-2.5

N;N;D

REVEL

Uncertain

0.29

Sift

Benign

0.23

T;T;T

Sift4G

Uncertain

0.017

D;D;T

Polyphen

0.12

.;B;.

Vest4

0.44

MutPred

0.41

.;Loss of sheet (P = 0.1907);.;

MVP

0.44

MPC

0.93

ClinPred

0.87

GERP RS

4.8

Varity_R

0.29

gMVP

0.82

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