chr5-112839349-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000038.6(APC):​c.3755C>A​(p.Ser1252Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,460,836 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 Uncertain significance (★★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

APC
NM_000038.6 missense

Scores

6
13

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.36
Variant links:
Genes affected
APC (HGNC:583): (APC regulator of WNT signaling pathway) This gene encodes a tumor suppressor protein that acts as an antagonist of the Wnt signaling pathway. It is also involved in other processes including cell migration and adhesion, transcriptional activation, and apoptosis. Defects in this gene cause familial adenomatous polyposis (FAP), an autosomal dominant pre-malignant disease that usually progresses to malignancy. Mutations in the APC gene have been found to occur in most colorectal cancers, where disease-associated mutations tend to be clustered in a small region designated the mutation cluster region (MCR) and result in a truncated protein product. [provided by RefSeq, Jun 2022]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.27925566).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
APCNM_000038.6 linkuse as main transcriptc.3755C>A p.Ser1252Tyr missense_variant 16/16 ENST00000257430.9 NP_000029.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
APCENST00000257430.9 linkuse as main transcriptc.3755C>A p.Ser1252Tyr missense_variant 16/165 NM_000038.6 ENSP00000257430 P1P25054-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1460836
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
726634
show subpopulations
Gnomad4 AFR exome
AF:
0.0000600
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGeneDxDec 07, 2022Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJul 15, 2023The p.S1252Y variant (also known as c.3755C>A), located in coding exon 15 of the APC gene, results from a C to A substitution at nucleotide position 3755. The serine at codon 1252 is replaced by tyrosine, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, in silico predictors for this gene do not accurately predict pathogenicity. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.19
BayesDel_addAF
Uncertain
0.049
T
BayesDel_noAF
Benign
-0.17
CADD
Benign
23
DANN
Benign
0.94
DEOGEN2
Uncertain
0.60
D;D;T
Eigen
Benign
-0.055
Eigen_PC
Benign
0.20
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.95
.;D;D
M_CAP
Benign
0.030
D
MetaRNN
Benign
0.28
T;T;T
MetaSVM
Benign
-0.68
T
MutationAssessor
Benign
0.0
N;N;.
MutationTaster
Benign
1.0
N;N;N
PrimateAI
Benign
0.47
T
PROVEAN
Benign
-1.9
N;N;N
REVEL
Benign
0.27
Sift
Uncertain
0.0040
D;D;D
Sift4G
Uncertain
0.048
D;D;D
Polyphen
0.0070
B;B;.
Vest4
0.23
MutPred
0.35
Loss of disorder (P = 0.0342);Loss of disorder (P = 0.0342);Loss of disorder (P = 0.0342);
MVP
0.85
ClinPred
0.70
D
GERP RS
5.8
Varity_R
0.15
gMVP
0.52

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-112175046; COSMIC: COSV57333121; COSMIC: COSV57333121; API