chr5-112842579-A-G
Variant summary
Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2
The NM_000038.6(APC):āc.6985A>Gā(p.Ile2329Val) variant causes a missense change. The variant allele was found at a frequency of 0.000149 in 1,613,838 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000038.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -9 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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APC | ENST00000257430.9 | c.6985A>G | p.Ile2329Val | missense_variant | Exon 16 of 16 | 5 | NM_000038.6 | ENSP00000257430.4 | ||
ENSG00000258864 | ENST00000520401.1 | n.228+13607A>G | intron_variant | Intron 3 of 7 | 3 | ENSP00000454861.1 |
Frequencies
GnomAD3 genomes AF: 0.000171 AC: 26AN: 152174Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000283 AC: 71AN: 250696Hom.: 0 AF XY: 0.000280 AC XY: 38AN XY: 135538
GnomAD4 exome AF: 0.000146 AC: 214AN: 1461546Hom.: 0 Cov.: 34 AF XY: 0.000136 AC XY: 99AN XY: 727102
GnomAD4 genome AF: 0.000171 AC: 26AN: 152292Hom.: 0 Cov.: 32 AF XY: 0.000201 AC XY: 15AN XY: 74474
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Benign:4
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This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
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not specified Benign:2
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Variant summary: APC c.6985A>G (p.Ile2329Val) results in a conservative amino acid change located in the Adenomatous polyposis coli protein basic domain (IPR009234) of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00029 in 252890 control chromosomes. The observed variant frequency is approximately 4 fold of the estimated maximal expected allele frequency for a pathogenic variant in APC causing Familial Adenomatous Polyposis phenotype (7.1e-05), strongly suggesting that the variant is benign. c.6985A>G has been reported in the literature in individuals affected with Lynch syndrome associated cancer and individuals who were high risk for colorectal cancer (example, Azzopardi_2008, Martin-Morales _2018). These report(s) do not provide unequivocal conclusions about association of the variant with Familial Adenomatous Polyposis. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Nine clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Based on the evidence outlined above, the variant was classified as benign. -
Familial adenomatous polyposis 1 Benign:2
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Classic or attenuated familial adenomatous polyposis Benign:2
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not provided Benign:2
APC: BS1, BS2 -
This variant is associated with the following publications: (PMID: 25203624, 25801821, 26332594, 25980754, 25637381, 18199528, 21859464) -
APC-Associated Polyposis Disorders Uncertain:1
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -
Ovarian cancer Benign:1
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APC-related disorder Benign:1
This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Colorectal adenoma Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at