chr2-240868867-T-C
Variant summary
Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1_SupportingPM2PP5_Very_Strong
The NM_000030.3(AGXT):āc.2T>Cā(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.00000683 in 1,610,270 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 (ā ā ).
Frequency
Consequence
NM_000030.3 start_lost
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 11 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000457 AC: 11AN: 240536Hom.: 0 AF XY: 0.0000534 AC XY: 7AN XY: 131184
GnomAD4 exome AF: 0.00000686 AC: 10AN: 1458064Hom.: 0 Cov.: 31 AF XY: 0.00000690 AC XY: 5AN XY: 725094
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152206Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1AN XY: 74356
ClinVar
Submissions by phenotype
Primary hyperoxaluria, type I Pathogenic:6
Variant_type:missense/MutationTaster:Disease_causing_automatic/CADD:Damaging/phyloP:Conserved/phastCons:Conserved/gnomAD_exome_EastAsian:0.0005/ExAC_EastAsian:0.0003/dbSNP:rs138584408 -
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Primary hyperoxaluria Pathogenic:1
Variant summary: AGXT c.2T>C (p.Met1Thr) alters the initiation codon and is predicted to result either in absence of the protein or truncation of the encoded protein due to translation initiation at a downstream codon. Next inframe start codon is located at p.M38. Variants upstream of this position have been classified Pathogenic in ClinVar (CV IDs: 188957,204069, 204072). Four of four in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4.6e-05 in 240536 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in AGXT causing Primary Hyperoxaluria Type 1 (4.6e-05 vs 0.0024), allowing no conclusion about variant significance. c.2T>C has been reported in the literature in individuals affected with Primary Hyperoxaluria (examples:Li_2014, Yuen_2004, Lin_2021, Xin_2023). These data indicate that the variant is likely to be associated with disease. The following publications have been ascertained in the context of this evaluation (PMID: 37139236, 24934730, 33721035,15365967). ClinVar contains an entry for this variant (Variation ID: 204065). Based on the evidence outlined above, the variant was classified as pathogenic. -
not provided Pathogenic:1
This sequence change affects the initiator methionine of the AGXT mRNA. The next in-frame methionine is located at codon 38. This variant is present in population databases (rs138584408, gnomAD 0.05%). Disruption of the initiator codon has been observed in individuals with primary hyperoxaluria type 1 (PMID: 15365967, 24934730, 29456205). ClinVar contains an entry for this variant (Variation ID: 204065). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. Experimental studies have shown that disruption of the initiator codon affects AGXT function (PMID: 17495019). For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at