NM_005883.3:c.209C>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_005883.3(APC2):c.209C>T(p.Thr70Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00116 in 1,597,196 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T70T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00092 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0012 ( 2 hom. )

Consequence

APC2
NM_005883.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 3.53

Variant links:

Genes affected

APC2 (HGNC:24036): (APC regulator of WNT signaling pathway 2) This gene encodes a strongly conserved protein that has an N-terminal coiled-coil domain followed by an armadillo domain, five 20-amino acid repeats, and two SAMP domains. This protein promotes the assembly of a multiprotein complex that recruits and phosphorylates the Wnt effector beta-catenin and targets beta-catenin for ubiquitylation and proteasomal degradation. This protein therefore plays a role in the reduction of cytoplasmic levels of beta-catenin which in turn reduces activation of Wnt target genes that play a pivotal role in the pathogenesis of various human cancers. The protein encoded by this gene is closely related to the adenomatous polyposis coli (APC) tumor-suppressor protein and has similar tumor-suppressor effects. This gene also plays a role in actin assembly, cell-cell adhesion, and microtubule network formation through its interaction with cytoskeletal proteins. This gene has its highest expression in the central nervous system and is involved in brain development through cytoskeletal regulation in neurons. Alternative splicing produces multiple transcript variants encoding distinct isoforms. [provided by RefSeq, May 2017]

APC2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.007622391).

BP6

Variant 19-1453314-C-T is Benign according to our data. Variant chr19-1453314-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 741139.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1, Benign=1}.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APC2	NM_005883.3 link	c.209C>T	p.Thr70Met	missense_variant	Exon 3 of 15	ENST00000590469.6	NP_005874.1	O95996-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APC2	ENST00000590469.6 link	c.209C>T	p.Thr70Met	missense_variant	Exon 3 of 15	1	NM_005883.3	ENSP00000467073.2		O95996-1A0A0C4DGQ0

Frequencies

GnomAD3 genomes

AF:

0.000920

AC:

140

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00198

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00153

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00115

AC:

252

AN:

218894

Hom.:

AF XY:

0.00112

AC XY:

133

AN XY:

118618

show subpopulations

Gnomad AFR exome

AF:

0.000225

Gnomad AMR exome

AF:

0.000132

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00214

Gnomad NFE exome

AF:

0.00210

Gnomad OTH exome

AF:

0.000365

GnomAD4 exome

AF:

0.00119

AC:

1713

AN:

1444926

Hom.:

Cov.:

AF XY:

0.00120

AC XY:

858

AN XY:

717292

show subpopulations

Gnomad4 AFR exome

AF:

0.000150

Gnomad4 AMR exome

AF:

0.0000731

Gnomad4 ASJ exome

AF:

0.0000389

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00160

Gnomad4 NFE exome

AF:

0.00143

Gnomad4 OTH exome

AF:

0.000686

GnomAD4 genome

AF:

0.000919

AC:

140

AN:

152270

Hom.:

Cov.:

AF XY:

0.000860

AC XY:

AN XY:

74440

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00198

Gnomad4 NFE

AF:

0.00153

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00137

Hom.:

Bravo

AF:

0.000756

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00156

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00152

AC:

ExAC

AF:

0.00140

AC:

169

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 05, 2025

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

APC2: BP4, BS2 -

Inborn genetic diseases

Benign:1

Sep 01, 2021

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. -

APC2-related disorder

Benign:1

Mar 01, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.41

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

T;T;T;T;T;.;T

Eigen

Uncertain

0.23

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.81

LIST_S2

Uncertain

0.89

D;D;D;D;.;D;D

MetaRNN

Benign

0.0076

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-2.5

.;.;.;N;N;.;N

REVEL

Benign

0.13

Sift

Benign

0.054

.;.;.;T;T;.;T

Sift4G

Benign

0.21

T;T;T;T;T;T;T

Polyphen

0.91

.;.;.;P;P;.;.

Vest4

0.46, 0.53

MVP

0.38

MPC

1.1

ClinPred

0.037

GERP RS

3.8

Varity_R

0.10

gMVP

0.23

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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