rs121965036
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1_StrongPM2PP5_Very_Strong
The NM_000274.4(OAT):c.1186C>T(p.Arg396Ter) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,756 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 Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. R396R) has been classified as Likely benign.
Frequency
Consequence
NM_000274.4 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
OAT | NM_000274.4 | c.1186C>T | p.Arg396Ter | stop_gained | 10/10 | ENST00000368845.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
OAT | ENST00000368845.6 | c.1186C>T | p.Arg396Ter | stop_gained | 10/10 | 1 | NM_000274.4 | P1 | |
OAT | ENST00000539214.5 | c.772C>T | p.Arg258Ter | stop_gained | 9/9 | 1 | |||
OAT | ENST00000471127.1 | n.696C>T | non_coding_transcript_exon_variant | 4/4 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461756Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727178
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
Ornithine aminotransferase deficiency Pathogenic:3
Pathogenic, no assertion criteria provided | literature only | OMIM | Feb 15, 1992 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Aug 25, 2023 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 13, 2023 | This sequence change creates a premature translational stop signal (p.Arg396*) in the OAT gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 44 amino acid(s) of the OAT protein. This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with gyrate atrophy (PMID: 1737786). ClinVar contains an entry for this variant (Variation ID: 149). This variant disrupts a region of the OAT protein in which other variant(s) (p.Arg426*) have been determined to be pathogenic (PMID: 7887415, 23076989). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. - |
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Sep 28, 2018 | The R396X variant in the OAT gene has been reported previously in the homozygous state in an individual with gyrate atrophy (Brody et al., 1992). This variant is predicted to cause loss of normal protein function through protein truncation as the last 44 amino acids are lost. The R396X variant is not observed in large population cohorts (Lek et al., 2016). We interpret R396X as a likely pathogenic variant. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at