5-112842731-C-G
Variant summary
Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2
The NM_000038.6(APC):c.7137C>G(p.Thr2379Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,613,794 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 Likely benign (★★).
Frequency
Consequence
NM_000038.6 synonymous
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -17 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
APC | ENST00000257430.9 | c.7137C>G | p.Thr2379Thr | synonymous_variant | Exon 16 of 16 | 5 | NM_000038.6 | ENSP00000257430.4 | ||
ENSG00000258864 | ENST00000520401.1 | n.228+13759C>G | intron_variant | Intron 3 of 7 | 3 | ENSP00000454861.1 |
Frequencies
GnomAD3 genomes AF: 0.0000986 AC: 15AN: 152140Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000240 AC: 6AN: 250132Hom.: 0 AF XY: 0.0000148 AC XY: 2AN XY: 135208
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461654Hom.: 0 Cov.: 34 AF XY: 0.00000413 AC XY: 3AN XY: 727130
GnomAD4 genome AF: 0.0000986 AC: 15AN: 152140Hom.: 0 Cov.: 32 AF XY: 0.0000942 AC XY: 7AN XY: 74328
ClinVar
Submissions by phenotype
Familial adenomatous polyposis 1 Benign:2
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This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
Hereditary cancer-predisposing syndrome Benign:2
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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. -
not specified Benign:1
Variant summary: APC c.7137C>G alters a non-conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant is found at a frequency of 0.0000326 (9/275826 control chromosomes) in the gnomAD database, and was exclusively observed in the African subpopulation at a frequency of 0.000375 (9/23978 African control chromosomes). This frequency in the African subpopulation is greater than 5-fold above the maximal expected allele frequency for a pathogenic variant in APC, suggesting that the variant is likely a benign polymorphism in African lineages. To our knowledge, no occurrence of c.7137C>G in individuals affected with Familial Adenomatous Polyposis and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and both classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -
Classic or attenuated familial adenomatous polyposis Benign:1
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not provided Benign:1
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
APC-related disorder Benign:1
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at