rs368147360
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_002860.4(ALDH18A1):c.868G>A(p.Gly290Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000508 in 1,613,926 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000049 ( 0 hom. )
Consequence
ALDH18A1
NM_002860.4 missense
NM_002860.4 missense
Scores
6
4
9
Clinical Significance
Conservation
PhyloP100: 7.46
Genes affected
ALDH18A1 (HGNC:9722): (aldehyde dehydrogenase 18 family member A1) This gene is a member of the aldehyde dehydrogenase family and encodes a bifunctional ATP- and NADPH-dependent mitochondrial enzyme with both gamma-glutamyl kinase and gamma-glutamyl phosphate reductase activities. The encoded protein catalyzes the reduction of glutamate to delta1-pyrroline-5-carboxylate, a critical step in the de novo biosynthesis of proline, ornithine and arginine. Mutations in this gene lead to hyperammonemia, hypoornithinemia, hypocitrullinemia, hypoargininemia and hypoprolinemia and may be associated with neurodegeneration, cataracts and connective tissue diseases. Alternatively spliced transcript variants, encoding different isoforms, have been described for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ALDH18A1 | NM_002860.4 | c.868G>A | p.Gly290Arg | missense_variant | 8/18 | ENST00000371224.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ALDH18A1 | ENST00000371224.7 | c.868G>A | p.Gly290Arg | missense_variant | 8/18 | 1 | NM_002860.4 | P3 | |
ALDH18A1 | ENST00000371221.3 | c.862G>A | p.Gly288Arg | missense_variant | 8/18 | 1 | A1 | ||
ALDH18A1 | ENST00000489386.1 | n.233G>A | non_coding_transcript_exon_variant | 2/5 | 3 |
Frequencies
GnomAD3 genomes ? AF: 0.0000723 AC: 11AN: 152136Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000637 AC: 16AN: 251312Hom.: 0 AF XY: 0.0000294 AC XY: 4AN XY: 135832
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GnomAD4 exome AF: 0.0000486 AC: 71AN: 1461790Hom.: 0 Cov.: 31 AF XY: 0.0000495 AC XY: 36AN XY: 727194
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GnomAD4 genome ? AF: 0.0000723 AC: 11AN: 152136Hom.: 0 Cov.: 32 AF XY: 0.0000807 AC XY: 6AN XY: 74312
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Cutis laxa, autosomal dominant 3 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Feb 01, 2019 | This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. - |
de Barsy syndrome;C1832669:Autosomal dominant spastic paraplegia type 9;C4225268:Cutis laxa, autosomal dominant 3 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jun 29, 2023 | 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. 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) performed at Invitae indicates that this missense variant is not expected to disrupt ALDH18A1 protein function. ClinVar contains an entry for this variant (Variation ID: 464043). This variant has not been reported in the literature in individuals affected with ALDH18A1-related conditions. This variant is present in population databases (rs368147360, gnomAD 0.05%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 290 of the ALDH18A1 protein (p.Gly290Arg). - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jan 18, 2024 | Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant does not alter protein structure/function - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Benign
T
BayesDel_noAF
Uncertain
CADD
Pathogenic
DANN
Pathogenic
DEOGEN2
Benign
T;.
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D
M_CAP
Benign
D
MetaRNN
Uncertain
D;D
MetaSVM
Benign
T
MutationAssessor
Benign
L;.
MutationTaster
Benign
D;D
PrimateAI
Pathogenic
D
PROVEAN
Benign
N;N
REVEL
Uncertain
Sift
Benign
T;T
Sift4G
Benign
T;T
Polyphen
D;D
Vest4
MutPred
Gain of solvent accessibility (P = 0.0306);.;
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