rs147036141

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4BA1BP7BS2

This summary comes from the ClinGen Evidence Repository: The c.705A>G (p.Leu235=) variant in APC is a synonymous (silent) variant that is not predicted to impact splicing by multiple splicing predictors including SpliceAI, VarSEAK and MaxEntScan (BP4, BP7). This variant has been observed 3 (≥ 2) times in homozygous state in gnomAD 2.1.1 (BS2). The highest population minor allele frequency in the non-cancer population of gnomAD v2.1.1 is 0.004669 in the Finnish population, which is higher than the ClinGen InSiGHT Hereditary Colorectal Cancer/Polyposis Variant Curation Expert Panel (HCCP VCEP) threshold (>0.001) for BA1, and therefore meets this criterion (BA1). In summary, this variant meets the criteria to be classified as Benign for FAP based on the ACMG/AMP criteria applied, as specified by the HCCP VCEP: BA1, BS2, BP4, and BP7 (Specification Version 1.0; date of approval: 12/12/2022). LINK:https://erepo.genome.network/evrepo/ui/classification/CA012805/MONDO:0021056/089

Frequency

Genomes: 𝑓 0.0021 ( 3 hom., cov: 32)

Exomes 𝑓: 0.0032 ( 10 hom. )

Consequence

APC
NM_001354906.2 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Benign reviewed by expert panel B:25

Conservation

PhyloP100: 0.616

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BP7

For more information check the summary or visit ClinGen Evidence Repository.

BS2

For more information check the summary or visit ClinGen Evidence Repository.

BA1

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APC	NM_000038.6 link	c.705A>G	p.Leu235Leu	synonymous_variant	Exon 7 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.705A>G	p.Leu235Leu	synonymous_variant	Exon 7 of 16	5	NM_000038.6	ENSP00000257430.4		P25054-1

Frequencies

GnomAD3 genomes

AF:

0.00211

AC:

322

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000458

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00327

Gnomad ASJ

AF:

0.00547

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00334

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.00228

AC:

573

AN:

251210

Hom.:

AF XY:

0.00219

AC XY:

298

AN XY:

135764

show subpopulations

Gnomad AFR exome

AF:

0.000800

Gnomad AMR exome

AF:

0.00159

Gnomad ASJ exome

AF:

0.00467

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000229

Gnomad FIN exome

AF:

0.000601

Gnomad NFE exome

AF:

0.00372

Gnomad OTH exome

AF:

0.00245

GnomAD4 exome

AF:

0.00318

AC:

4649

AN:

1460340

Hom.:

Cov.:

AF XY:

0.00304

AC XY:

2209

AN XY:

726514

show subpopulations

Gnomad4 AFR exome

AF:

0.000509

Gnomad4 AMR exome

AF:

0.00170

Gnomad4 ASJ exome

AF:

0.00429

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000336

Gnomad4 FIN exome

AF:

0.000676

Gnomad4 NFE exome

AF:

0.00380

Gnomad4 OTH exome

AF:

0.00260

GnomAD4 genome

AF:

0.00211

AC:

322

AN:

152366

Hom.:

Cov.:

AF XY:

0.00184

AC XY:

137

AN XY:

74524

show subpopulations

Gnomad4 AFR

AF:

0.000457

Gnomad4 AMR

AF:

0.00327

Gnomad4 ASJ

AF:

0.00547

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000471

Gnomad4 NFE

AF:

0.00334

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.00337

Hom.:

Bravo

AF:

0.00230

Asia WGS

AF:

0.000868

AC:

AN:

3472

EpiCase

AF:

0.00443

EpiControl

AF:

0.00421

ClinVar

Significance: Benign

Submissions summary: Benign:25

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not specified

Benign:7

Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jan 27, 2014

GeneDx

Significance: 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 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. -

Jan 14, 2022

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mayo Clinic Laboratories, Mayo Clinic

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Sep 20, 2012

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Benign:7

Feb 09, 2017

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Oct 13, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

APC: BP4, BP7 -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:5

Jul 24, 2014

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Oct 10, 2017

True Health Diagnostics

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Mar 17, 2016

Color Diagnostics, LLC DBA Color Health

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 31, 2020

Sema4, Sema4

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: curation

- -

Dec 20, 2022

Institute for Biomarker Research, Medical Diagnostic Laboratories, L.L.C.

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Familial adenomatous polyposis 1

Benign:4

Feb 18, 2023

ClinGen InSiGHT Hereditary Colorectal Cancer/Polyposis Variant Curation Expert Panel

Significance: Benign

Review Status: reviewed by expert panel

Collection Method: curation

The c.705A>G (p.Leu235=) variant in APC is a synonymous (silent) variant that is not predicted to impact splicing by multiple splicing predictors including SpliceAI, VarSEAK and MaxEntScan (BP4, BP7). This variant has been observed 3 times in homozygous state in gnomAD 2.1.1 (BS2). The highest population minor allele frequency in the non-cancer population of gnomAD v2.1.1 is 0.004669 in the Finnish population, which is higher than the ClinGen InSiGHT Hereditary Colorectal Cancer/Polyposis Variant Curation Expert Panel (HCCP VCEP) threshold (>0.001) for BA1, and therefore meets this criterion (BA1). In summary, this variant meets the criteria to be classified as Benign for FAP based on the ACMG/AMP criteria applied, as specified by the HCCP VCEP: BA1, BS2, BP4, and BP7 (Specification Version 1.0; date of approval: 12/12/2022). -

Feb 26, 2024

Myriad Genetics, Inc.

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

APC-Associated Polyposis Disorders

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Carcinoma of colon

Benign:1

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

The p.Leu235Leu variant is not expected to have clinical significance because it does not alter an amino acid residue and is not located near a splice junction. It has been reported in the UMD (x1) and LOVD (x2) databases. In addition, it is observed as a low frequency variant in the ESP cohort, increasing the likelihood this variant does not have clinical significance. In summary, based on the above information, this variant is predicted benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

7.8

DANN

Benign

0.80

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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