5-112842795-C-T
Variant summary
Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2
The NM_000038.6(APC):c.7201C>T(p.Leu2401Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0126 in 1,613,536 control chromosomes in the GnomAD database, including 174 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Consequence
NM_000038.6 synonymous
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -21 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
APC | ENST00000257430.9 | c.7201C>T | p.Leu2401Leu | synonymous_variant | Exon 16 of 16 | 5 | NM_000038.6 | ENSP00000257430.4 | ||
ENSG00000258864 | ENST00000520401.1 | n.228+13823C>T | intron_variant | Intron 3 of 7 | 3 | ENSP00000454861.1 |
Frequencies
GnomAD3 genomes AF: 0.0111 AC: 1696AN: 152128Hom.: 8 Cov.: 32
GnomAD3 exomes AF: 0.0101 AC: 2514AN: 250140Hom.: 22 AF XY: 0.0100 AC XY: 1355AN XY: 135186
GnomAD4 exome AF: 0.0128 AC: 18702AN: 1461290Hom.: 166 Cov.: 34 AF XY: 0.0125 AC XY: 9072AN XY: 726998
GnomAD4 genome AF: 0.0111 AC: 1696AN: 152246Hom.: 8 Cov.: 32 AF XY: 0.0110 AC XY: 816AN XY: 74458
ClinVar
Submissions by phenotype
not specified Benign:10
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Leu2401Leu in exon 15 of APC: This variant is not expected to have clinical sign ificance because it does not alter an amino acid residue and is not located with in the splice consensus sequence. It has been identified in 1.3% (92/7020) of Eu ropean American chromosomes from a broad population by the NHLBI Exome Sequencin g Project (http://evs.gs.washington.edu/EVS/; rs2229994). -
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Hereditary cancer-predisposing syndrome Benign:5
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This alteration is classified as 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 provided Benign:4
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APC: BP4, BP7, BS1, BS2 -
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Familial adenomatous polyposis 1 Benign:3
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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. -
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Carcinoma of colon Benign:1
The p.Leu2401Leu variant is not expected to have clinical significance because it does not alter an amino acid residue, is not located near a splice junction, and is listed in the dbSNP database as coming from a "clinical source" (ID#: rs2229994) with an average heterozygosity of 0.022+/-0.103, therefore increasing the likelihood of this variant to be benign. It has been identified in our laboratory in one among the 973 individuals who have undergone APC testing. Additionally, it has been identified twice in the literature, in 2/258 (0.007% frequency) proband chromosomes and 1/1052 (0.001 frequency) control chromosomes where it was classified as a polymorhism (Hadjisavvas_2006_16650078, Zhou_2004_15122587). In summary, based on the above information, the p.Leu2401Leu variant is classified as predicted benign. -
APC-Associated Polyposis Disorders Benign:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Classic or attenuated familial adenomatous polyposis Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at