rs36056539

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BS2

The NM_000767.5(CYP2B6):​c.503C>A​(p.Thr168Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,670 control chromosomes in the GnomAD database, including 1 homozygotes. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 0.0000034 ( 1 hom. )

Consequence

CYP2B6
NM_000767.5 missense

Scores

7
12

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.157
Variant links:
Genes affected
CYP2B6 (HGNC:2615): (cytochrome P450 family 2 subfamily B member 6) This gene, CYP2B6, 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 protein localizes to the endoplasmic reticulum and its expression is induced by phenobarbital. The enzyme is known to metabolize some xenobiotics, such as the anti-cancer drugs cyclophosphamide and ifosphamide. Transcript variants for this gene have been described; however, it has not been resolved whether these transcripts are in fact produced by this gene or by a closely related pseudogene, CYP2B7. Both the gene and the pseudogene are located in the middle of a CYP2A pseudogene found in a large cluster of cytochrome P450 genes from the CYP2A, CYP2B and CYP2F subfamilies on chromosome 19q. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BS2
High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CYP2B6NM_000767.5 linkc.503C>A p.Thr168Asn missense_variant Exon 4 of 9 ENST00000324071.10 NP_000758.1 P20813-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CYP2B6ENST00000324071.10 linkc.503C>A p.Thr168Asn missense_variant Exon 4 of 9 1 NM_000767.5 ENSP00000324648.2 P20813-1
CYP2B6ENST00000593831.1 linkc.256+2477C>A intron_variant Intron 2 of 4 2 ENSP00000470582.1 M0QZJ2
CYP2B6ENST00000594187.1 linkn.87C>A non_coding_transcript_exon_variant Exon 2 of 2 5
CYP2B6ENST00000598834.2 linkn.404C>A non_coding_transcript_exon_variant Exon 4 of 10 5 ENSP00000496294.1 A0A2R8YFA4

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1461670
Hom.:
1
Cov.:
32
AF XY:
0.00000550
AC XY:
4
AN XY:
727138
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000450
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.049
T
BayesDel_noAF
Benign
-0.31
CADD
Benign
14
DANN
Uncertain
0.98
DEOGEN2
Benign
0.027
T;T
Eigen
Benign
-0.44
Eigen_PC
Benign
-0.65
FATHMM_MKL
Benign
0.049
N
LIST_S2
Uncertain
0.93
.;D
M_CAP
Benign
0.010
T
MetaRNN
Uncertain
0.49
T;T
MetaSVM
Benign
-0.73
T
MutationAssessor
Uncertain
2.1
M;M
PrimateAI
Benign
0.29
T
PROVEAN
Uncertain
-3.1
.;D
REVEL
Benign
0.22
Sift
Uncertain
0.0070
.;D
Sift4G
Uncertain
0.044
.;D
Polyphen
0.75
P;P
Vest4
0.43
MutPred
0.66
Gain of relative solvent accessibility (P = 0.09);Gain of relative solvent accessibility (P = 0.09);
MVP
0.74
MPC
0.34
ClinPred
0.71
D
GERP RS
-0.29
Varity_R
0.66
gMVP
0.20

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-41512828; API