chr5-112842768-C-A
Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4BP6BS2
The NM_000038.6(APC):c.7174C>A(p.Pro2392Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,613,910 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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 Likely_benign. Variant got -6 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.7174C>A | p.Pro2392Thr | missense_variant | Exon 16 of 16 | 5 | NM_000038.6 | ENSP00000257430.4 | ||
ENSG00000258864 | ENST00000520401.1 | n.228+13796C>A | intron_variant | Intron 3 of 7 | 3 | ENSP00000454861.1 |
Frequencies
GnomAD3 genomes AF: 0.0000329 AC: 5AN: 152132Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000799 AC: 2AN: 250282Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135250
GnomAD4 exome AF: 0.00000821 AC: 12AN: 1461660Hom.: 0 Cov.: 34 AF XY: 0.0000138 AC XY: 10AN XY: 727144
GnomAD4 genome AF: 0.0000328 AC: 5AN: 152250Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3AN XY: 74438
ClinVar
Submissions by phenotype
Familial adenomatous polyposis 1 Uncertain:3Benign:1
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This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
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not provided Uncertain:3
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 18199528, 31980526, 35534704) -
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Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
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. -
This missense variant replaces proline with threonine at codon 2392 of the APC protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with APC-related disorders in the literature. This variant has been identified in 2/250282 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
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not specified Uncertain:1Benign:1
Classification criteria: BP1, BS1 -
Variant summary: APC c.7174C>A (p.Pro2392Thr) results in a non-conservative amino acid change located in the Adenomatous polyposis coli protein basic domain of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4.1e-06 in 245024 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.7174C>A in individuals affected with Familial Adenomatous Polyposis and no experimental evidence demonstrating its impact on protein function have been reported. Five ClinVar submissions from clinical diagnostic laboratories (evaluation after 2014) cite the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
Gastric cancer;C0346629:Colorectal cancer;C1851124:Desmoid disease, hereditary;C2239176:Hepatocellular carcinoma;C2713442:Familial adenomatous polyposis 1;C4749917:Gastric adenocarcinoma and proximal polyposis of the stomach Uncertain:1
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Classic or attenuated familial adenomatous polyposis Uncertain:1
This missense variant replaces proline with threonine at codon 2392 of the APC protein. Computational prediction tool suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has been reported in an individual affected with breast cancer (DOI: 10.1101/2021.04.15.21255554v2). This variant has been identified in 2/250282 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at