2-72132349-G-A

Position:

chr2-72132349-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_019885.4(CYP26B1):c.1417C>T(p.Arg473Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00111 in 1,610,680 control chromosomes in the GnomAD database, including 19 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

Frequency

Genomes: 𝑓 0.0059 ( 11 hom., cov: 33)

Exomes 𝑓: 0.00061 ( 8 hom. )

Consequence

CYP26B1
NM_019885.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.31

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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008088917).

BP6

Variant 2-72132349-G-A is Benign according to our data. Variant chr2-72132349-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 790505.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-72132349-G-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00591 (900/152278) while in subpopulation AFR AF= 0.0208 (865/41562). AF 95% confidence interval is 0.0197. There are 11 homozygotes in gnomad4. There are 420 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 900 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP26B1	NM_019885.4 linkuse as main transcript	c.1417C>T	p.Arg473Cys	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.1417C>T	p.Arg473Cys	missense_variant	6/6	1	NM_019885.4	ENSP00000001146	P1	Q9NR63-1
CYP26B1	ENST00000546307.5 linkuse as main transcript	c.1192C>T	p.Arg398Cys	missense_variant	5/5	1		ENSP00000443304		Q9NR63-2
CYP26B1	ENST00000412253.1 linkuse as main transcript	c.844C>T	p.Arg282Cys	missense_variant	5/5	1		ENSP00000401465

Frequencies

GnomAD3 genomes

AF:

0.00589

AC:

896

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0208

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00479

GnomAD3 exomes

AF:

0.00153

AC:

375

AN:

245756

Hom.:

AF XY:

0.00101

AC XY:

134

AN XY:

133212

show subpopulations

Gnomad AFR exome

AF:

0.0214

Gnomad AMR exome

AF:

0.000851

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000331

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000631

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.000614

AC:

895

AN:

1458402

Hom.:

Cov.:

AF XY:

0.000530

AC XY:

384

AN XY:

725004

show subpopulations

Gnomad4 AFR exome

AF:

0.0225

Gnomad4 AMR exome

AF:

0.000856

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000582

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000252

Gnomad4 OTH exome

AF:

0.00110

GnomAD4 genome

AF:

0.00591

AC:

900

AN:

152278

Hom.:

Cov.:

AF XY:

0.00564

AC XY:

420

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.0208

Gnomad4 AMR

AF:

0.00111

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00474

Alfa

AF:

0.000802

Hom.:

Bravo

AF:

0.00672

ESP6500AA

AF:

0.0179

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00192

AC:

233

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 10, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 24, 2019	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.24

.;T;.

Eigen

Uncertain

0.65

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.94

D;D;D

MetaRNN

Benign

0.0081

T;T;T

MetaSVM

Benign

-0.56

MutationAssessor

Benign

1.8

.;L;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.61

PROVEAN

Uncertain

-2.7

D;D;D

REVEL

Benign

0.27

Sift

Uncertain

0.022

D;D;D

Sift4G

Uncertain

0.032

D;D;D

Polyphen

0.92

.;P;.

Vest4

0.48

MVP

0.65

MPC

1.0

ClinPred

0.052

GERP RS

5.6

Varity_R

0.17

gMVP

0.84

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