5-112746227-A-G

Variant names:

• chr5-112746227-A-G
• rs6594646
• NM_000038.6:c.-19+8302A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000038.6(APC):​c.-19+8302A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.401 in 151,976 control chromosomes in the GnomAD database, including 14,724 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as other (no stars).

• Frequency: Genomes: 𝑓 0.40 (14724 hom., cov: 32)
• Consequence: APC NM_000038.6 intron
• Clinical Significance: other no assertion criteria provided O:1
• Conservation: PhyloP100: 0.117
• Publications: 9 publications found

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 Gene-Disease associations (from GenCC):

• classic or attenuated familial adenomatous polyposis

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• desmoid tumor

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
• familial adenomatous polyposis 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
• gastric adenocarcinoma and proximal polyposis of the stomach

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet
• sarcoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• APC-related attenuated familial adenomatous polyposis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Turcot syndrome with polyposis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Cenani-Lenz syndactyly syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.7).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.65 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APC	NM_000038.6	c.-19+8302A>G		intron_variant	Intron 1 of 15	ENST00000257430.9	NP_000029.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APC	ENST00000257430.9	c.-19+8302A>G		intron_variant	Intron 1 of 15	5	NM_000038.6	ENSP00000257430.4

Frequencies

GnomAD3 genomes AF: 0.401 AC: 60914 AN: 151860 Hom.: 14726 Cov.: 32

Gnomad AFR AF: 0.126

Gnomad AMI AF: 0.511

Gnomad AMR AF: 0.567

Gnomad ASJ AF: 0.476

Gnomad EAS AF: 0.669

Gnomad SAS AF: 0.551

Gnomad FIN AF: 0.411

Gnomad MID AF: 0.443

Gnomad NFE AF: 0.492

Gnomad OTH AF: 0.440

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.401 AC: 60914 AN: 151976 Hom.: 14724 Cov.: 32 AF XY: 0.404 AC XY: 30050 AN XY: 74310

African (AFR) AF: 0.126 AC: 5224 AN: 41502

American (AMR) AF: 0.567 AC: 8677 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.476 AC: 1648 AN: 3464

East Asian (EAS) AF: 0.668 AC: 3454 AN: 5168

South Asian (SAS) AF: 0.552 AC: 2660 AN: 4820

European-Finnish (FIN) AF: 0.411 AC: 4311 AN: 10500

Middle Eastern (MID) AF: 0.442 AC: 130 AN: 294

European-Non Finnish (NFE) AF: 0.492 AC: 33422 AN: 67920

Other (OTH) AF: 0.439 AC: 922 AN: 2102

Alfa AF: 0.470 Hom.: 9222

Bravo AF: 0.404

Asia WGS AF: 0.565 AC: 1943 AN: 3442

ClinVar

Significance: other

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Familial colorectal cancer Other:1

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Systems Biology Platform Zhejiang California International NanoSystems Institute

Significance: other

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.70
CADD	Benign	8.3
DANN	Benign	0.90
PhyloP100		0.12
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs6594646; hg19: chr5-112081924;