rs144109267

Positions:

chr4-186209260-A-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_207352.4(CYP4V2):c.1393A>G(p.Arg465Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,613,660 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

CYP4V2
NM_207352.4 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 2.47

Variant links:

Genes affected

CYP4V2 (HGNC:23198): (cytochrome P450 family 4 subfamily V member 2) This gene encodes a member of the cytochrome P450 hemethiolate protein superfamily which are involved in oxidizing various substrates in the metabolic pathway. It is implicated in the metabolism of fatty acid precursors into n-3 polyunsaturated fatty acids. Mutations in this gene result in Bietti crystalline corneoretinal dystrophy. [provided by RefSeq, Jul 2008]

CYP4V2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.982

PP5

Variant 4-186209260-A-G is Pathogenic according to our data. Variant chr4-186209260-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 166978.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr4-186209260-A-G is described in Lovd as [Pathogenic]. Variant chr4-186209260-A-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CYP4V2	NM_207352.4 linkuse as main transcript	c.1393A>G	p.Arg465Gly	missense_variant	10/11	ENST00000378802.5
CYP4V2	XM_005262935.5 linkuse as main transcript	c.1390A>G	p.Arg464Gly	missense_variant	10/11
CYP4V2	XM_047450077.1 linkuse as main transcript	c.997A>G	p.Arg333Gly	missense_variant	8/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CYP4V2	ENST00000378802.5 linkuse as main transcript	c.1393A>G	p.Arg465Gly	missense_variant	10/11	1	NM_207352.4	P1	Q6ZWL3-1
CYP4V2	ENST00000502665.1 linkuse as main transcript	n.628A>G		non_coding_transcript_exon_variant	4/5	1
CYP4V2	ENST00000507209.5 linkuse as main transcript	n.6091A>G		non_coding_transcript_exon_variant	5/6	1
CYP4V2	ENST00000513354.5 linkuse as main transcript	n.483A>G		non_coding_transcript_exon_variant	4/5	1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151780

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251428

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135896

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000703

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461880

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727240

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:

0.0000261

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151780

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74060

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:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000797

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 10, 2023	This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 465 of the CYP4V2 protein (p.Arg465Gly). This variant is present in population databases (rs144109267, gnomAD 0.007%). This missense change has been observed in individuals with Bietti crystalline dystrophy (PMID: 23221965, 24480711, 25629076, 28051075, 29691984). ClinVar contains an entry for this variant (Variation ID: 166978). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on CYP4V2 protein function. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 11, 2014	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.44

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.44

MetaRNN

Pathogenic

0.98

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

4.5

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-6.7

REVEL

Pathogenic

0.94

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.99

MVP

0.96

MPC

0.46

ClinPred

1.0

GERP RS

1.5

Varity_R

0.96

gMVP

0.95

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