rs119103282

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_207352.4(CYP4V2):c.130T>A(p.Trp44Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000118 in 1,588,290 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

CYP4V2
NM_207352.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:2U:2

Conservation

PhyloP100: 6.02

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 Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.807

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYP4V2	NM_207352.4 linkuse as main transcript	c.130T>A	p.Trp44Arg	missense_variant	1/11	ENST00000378802.5	NP_997235.3	Q6ZWL3-1
CYP4V2	XM_005262935.5 linkuse as main transcript	c.130T>A	p.Trp44Arg	missense_variant	1/11		XP_005262992.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYP4V2	ENST00000378802.5 linkuse as main transcript	c.130T>A	p.Trp44Arg	missense_variant	1/11	1	NM_207352.4	ENSP00000368079.4		Q6ZWL3-1

Frequencies

GnomAD3 genomes

AF:

0.000224

AC:

AN:

152040

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00151

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000234

AC:

AN:

200594

Hom.:

AF XY:

0.000219

AC XY:

AN XY:

109630

show subpopulations

Gnomad AFR exome

AF:

0.0000832

Gnomad AMR exome

AF:

0.000811

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000763

Gnomad NFE exome

AF:

0.000216

Gnomad OTH exome

AF:

0.000193

GnomAD4 exome

AF:

0.000107

AC:

154

AN:

1436132

Hom.:

Cov.:

AF XY:

0.000109

AC XY:

AN XY:

712826

show subpopulations

Gnomad4 AFR exome

AF:

0.0000302

Gnomad4 AMR exome

AF:

0.000713

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000120

Gnomad4 FIN exome

AF:

0.0000220

Gnomad4 NFE exome

AF:

0.000104

Gnomad4 OTH exome

AF:

0.000101

GnomAD4 genome

AF:

0.000223

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00150

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000127

Hom.:

Bravo

AF:

0.000276

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000117

AC:

ExAC

AF:

0.0000755

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:2Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Bietti crystalline corneoretinal dystrophy

Pathogenic:2

Pathogenic, no assertion criteria provided	curation	GeneReviews	Apr 12, 2012	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	May 01, 2004	- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

This sequence change replaces tryptophan, which is neutral and slightly polar, with arginine, which is basic and polar, at codon 44 of the CYP4V2 protein (p.Trp44Arg). This variant is present in population databases (rs119103282, gnomAD 0.08%). This missense change has been observed in individual(s) with Bietti crystalline corneoretinal dystrophy (PMID: 15042513, 28051075). ClinVar contains an entry for this variant (Variation ID: 2187). 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. 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. -

Retinal dystrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Jan 01, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.71

BayesDel_addAF

Uncertain

0.074

BayesDel_noAF

Pathogenic

0.25

CADD

Uncertain

DANN

Benign

0.87

DEOGEN2

Benign

0.36

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.59

M_CAP

Pathogenic

0.42

MetaRNN

Pathogenic

0.81

MetaSVM

Benign

-0.71

MutationAssessor

Uncertain

2.3

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-5.3

REVEL

Uncertain

0.44

Sift

Benign

0.51

Sift4G

Benign

0.41

Polyphen

0.0020

Vest4

0.95

MutPred

0.79

Gain of disorder (P = 0.0016);

MVP

0.81

MPC

0.13

ClinPred

0.36

GERP RS

3.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.62

gMVP

0.86

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