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

19

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]

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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
CYP26B1NM_019885.4 linkuse as main transcriptc.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
CYP26B1ENST00000001146.7 linkuse as main transcriptc.1495G>A p.Glu499Lys missense_variant 6/61 NM_019885.4 ENSP00000001146 P1Q9NR63-1
CYP26B1ENST00000546307.5 linkuse as main transcriptc.1270G>A p.Glu424Lys missense_variant 5/51 ENSP00000443304 Q9NR63-2
CYP26B1ENST00000412253.1 linkuse as main transcriptc.922G>A p.Glu308Lys missense_variant 5/51 ENSP00000401465

Frequencies

GnomAD3 genomes
AF:
0.000815
AC:
124
AN:
152174
Hom.:
0
Cov.:
33
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:
42
AN:
230034
Hom.:
0
AF XY:
0.000153
AC XY:
19
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:
98
AN:
1452638
Hom.:
1
Cov.:
32
AF XY:
0.0000624
AC XY:
45
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.:
0
Cov.:
33
AF XY:
0.000873
AC XY:
65
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.:
0
Bravo
AF:
0.000986
ESP6500AA
AF:
0.00159
AC:
7
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.000190
AC:
23
Asia WGS
AF:
0.000289
AC:
1
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 submitterclinical testingAmbry GeneticsMar 19, 2024This 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 providedclinical testingPreventionGenetics, part of Exact SciencesDec 06, 2022This 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 submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpMar 02, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.10
BayesDel_addAF
Benign
-0.45
T
BayesDel_noAF
Benign
-0.42
CADD
Benign
21
DANN
Benign
0.95
DEOGEN2
Benign
0.11
.;T;.
Eigen
Benign
-0.71
Eigen_PC
Benign
-0.50
FATHMM_MKL
Benign
0.47
N
LIST_S2
Benign
0.26
T;T;T
M_CAP
Benign
0.018
T
MetaRNN
Benign
0.0055
T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
1.8
.;L;.
MutationTaster
Benign
0.98
D;D;D
PrimateAI
Benign
0.41
T
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
T
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.

Other links and lift over

dbSNP: rs142056257; hg19: chr2-72359400; API