rs119103282
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Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3
The ENST00000378802.5(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
ENST00000378802.5 missense
ENST00000378802.5 missense
Scores
5
4
10
Clinical Significance
Conservation
PhyloP100: 6.02
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]
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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 | c.130T>A | p.Trp44Arg | missense_variant | 1/11 | ENST00000378802.5 | NP_997235.3 | |
CYP4V2 | XM_005262935.5 | 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 | c.130T>A | p.Trp44Arg | missense_variant | 1/11 | 1 | NM_207352.4 | ENSP00000368079 | P1 |
Frequencies
GnomAD3 genomes AF: 0.000224 AC: 34AN: 152040Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.000234 AC: 47AN: 200594Hom.: 0 AF XY: 0.000219 AC XY: 24AN XY: 109630
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GnomAD4 exome AF: 0.000107 AC: 154AN: 1436132Hom.: 0 Cov.: 32 AF XY: 0.000109 AC XY: 78AN XY: 712826
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GnomAD4 genome AF: 0.000223 AC: 34AN: 152158Hom.: 0 Cov.: 33 AF XY: 0.000242 AC XY: 18AN XY: 74412
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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 | literature only | OMIM | May 01, 2004 | - - |
Pathogenic, no assertion criteria provided | curation | GeneReviews | Apr 12, 2012 | - - |
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:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Pathogenic
CADD
Uncertain
DANN
Benign
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
D
LIST_S2
Benign
T
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Benign
T
MutationAssessor
Uncertain
M
MutationTaster
Benign
A
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D
REVEL
Uncertain
Sift
Benign
T
Sift4G
Benign
T
Polyphen
B
Vest4
MutPred
Gain of disorder (P = 0.0016);
MVP
MPC
ClinPred
T
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at