5-112843084-C-T
Variant summary
Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2
The NM_000038.6(APC):c.7490C>T(p.Ser2497Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000562 in 1,613,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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 -7 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.7490C>T | p.Ser2497Leu | missense_variant | Exon 16 of 16 | 5 | NM_000038.6 | ENSP00000257430.4 | ||
ENSG00000258864 | ENST00000520401.1 | n.229-13565C>T | intron_variant | Intron 3 of 7 | 3 | ENSP00000454861.1 |
Frequencies
GnomAD3 genomes AF: 0.000283 AC: 43AN: 152176Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000366 AC: 92AN: 251284Hom.: 0 AF XY: 0.000383 AC XY: 52AN XY: 135796
GnomAD4 exome AF: 0.000591 AC: 864AN: 1461680Hom.: 0 Cov.: 34 AF XY: 0.000540 AC XY: 393AN XY: 727138
GnomAD4 genome AF: 0.000283 AC: 43AN: 152176Hom.: 0 Cov.: 32 AF XY: 0.000296 AC XY: 22AN XY: 74348
ClinVar
Submissions by phenotype
not provided Uncertain:1Benign:8
Variant Summary: The c.7490C>T variant involves the alteration of a conserved nucleotide and 3/4 in silico tools predict a neutral outcome. The variant was observed in the large and broad cohorts of the ExAC project at an allele frequency of 0.033%, predominantly observed in the European (Non-Finnish) subpopulation at a frequency of 0.055%. This frequency exceeds the maximal expected allele frequency for a pathogenic variant in APC (0.006%), suggesting this is a benign polymorphism found primarily in population(s) of European origin. The variant was reported in a family affected by multiple colorectal adenomas and carcinoma, however was absent in two affected members and was present in 3 unaffected members, showing lack of segregation of the variant with disease (Al-Tassan_2002). While one reputable clinical lab has classified the variant as likely benign, others have classified it as a VUS. Considering the relatively high frequency of this variant in the general population as well as the lack of segregation seen in an affected family, this variant has been classified as Benign. -
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This variant is associated with the following publications: (PMID: 24728327, 25801821, 23910461, 11818965, 28389531) -
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Familial adenomatous polyposis 1 Benign:3
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This variant is considered likely benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752]. -
Hereditary cancer-predisposing syndrome Benign:3
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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 specified Benign:2Other:1
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APC-Associated Polyposis Disorders Benign: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. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at