rs138098808

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2

The NM_000038.6(APC):c.1606G>A(p.Glu536Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000031 in 1,612,780 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

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

APC
NM_000038.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:9

Conservation

PhyloP100: 9.60

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]

APC links:

ENSG00000258864 (HGNC:):

ENSG00000258864 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM1

In a repeat ARM 2 (size 42) in uniprot entity APC_HUMAN there are 7 pathogenic changes around while only 2 benign (78%) in NM_000038.6

BP4

Computational evidence support a benign effect (MetaRNN=0.13541973).

BP6

Variant 5-112827986-G-A is Benign according to our data. Variant chr5-112827986-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 216151.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=8, Benign=1, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APC	NM_000038.6 link	c.1606G>A	p.Glu536Lys	missense_variant	Exon 13 of 16	ENST00000257430.9	NP_000029.2	P25054-1Q4LE70

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APC	ENST00000257430.9 link	c.1606G>A	p.Glu536Lys	missense_variant	Exon 13 of 16	5	NM_000038.6	ENSP00000257430.4		P25054-1
ENSG00000258864	ENST00000520401.1 link	n.91G>A		non_coding_transcript_exon_variant	Exon 2 of 8	3		ENSP00000454861.1		H3BNH8

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000439

AC:

AN:

250728

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135492

show subpopulations

Gnomad AFR exome

AF:

0.000677

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1460480

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

726576

show subpopulations

Gnomad4 AFR exome

AF:

0.000688

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.000158

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.000577

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000154

Hom.:

Bravo

AF:

0.000155

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:3

Sep 14, 2020

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: APC c.1606G>A (p.Glu536Lys) results in a conservative amino acid change in 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 4.4e-05 in 250728 control chromosomes, predominantly at a frequency of 0.00068 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 10 fold of the estimated maximal expected allele frequency for a pathogenic variant in APC causing Familial Adenomatous Polyposis phenotype (7.1e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. c.1606G>A has been reported in the literature in individuals affected with breast cancer, colon cancer, and in an individual with a personal- or family history of Lynch syndrome (Tung_2014, Yurgelun_2015, Pearlman_2016). These report(s) do not provide unequivocal conclusions about association of the variant with Familial Adenomatous Polyposis. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments to include two submitters who have re-classified this variant as likely benign since our previous evaluation. (VUS, n=5, likely benign, n=2). Some submitters cite overlapping evidence utilized in the context of our evaluation. Based on the evidence outlined above, and the emerging transition in its classification, this variant was re-classified as likely benign. -

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 05, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:3

Jul 13, 2020

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Mar 11, 2021

Sema4, Sema4

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: curation

- -

Jan 24, 2020

Color Diagnostics, LLC DBA Color Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Familial adenomatous polyposis 1

Benign:2

Jan 05, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 07, 2024

Myriad Genetics, Inc.

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. -

Neoplasm of stomach;C0699790:Carcinoma of colon;C1851124:Desmoid disease, hereditary;C2239176:Hepatocellular carcinoma;C2713442:Familial adenomatous polyposis 1

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Jan 07, 2019

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is denoted APC c.1606G>A at the cDNA level, p.Glu536Lys (E536K) at the protein level, and results in the change of a Glutamic Acid to a Lysine (GAA>AAA). This variant has been reported in an individual with colon cancer, a patient with a personal history of a Lynch syndrome-associated cancer and/or polyps, and in two individuals with breast cancer (Tung 2015, Yurgelun 2015, Pearlman 2017). APC Glu536Lys was observed at an allele frequency of 0.08% (20/24,026 alleles) in individuals of African ancestry in large population cohorts (Lek 2016). This variant is located within the armadillo region (Azzopardi 2008). In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect. Based on currently available evidence, it is unclear whether APC Glu536Lys is a pathogenic or benign variant. We consider it to be a variant of uncertain significance. -

Hereditary cancer

Benign:1

Feb 27, 2025

Mendelics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following: it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease, and/or has normal protein function, and/or has lack of segregation with disease, and/or has been detected in co-occurrence with known pathogenic variant, and/or has lack of disease association in case-control studies, and/or is located in a region inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.54

.;D;D;T;T

Eigen

Uncertain

0.59

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;.;D;D;D

M_CAP

Benign

0.036

MetaRNN

Benign

0.14

T;T;T;T;T

MetaSVM

Benign

-0.48

MutationAssessor

Benign

1.4

.;L;L;.;.

PrimateAI

Pathogenic

0.88

PROVEAN

Uncertain

-3.4

D;D;D;D;.

REVEL

Uncertain

0.34

Sift

Benign

0.085

T;T;T;T;.

Sift4G

Benign

0.10

T;D;D;T;T

Polyphen

0.69

.;P;P;.;.

Vest4

0.62, 0.64

MVP

0.68

ClinPred

0.36

GERP RS

5.4

Varity_R

0.63

gMVP

0.45

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over