dbSNP rs1029692674: APC:n.-110C>A (chr5-112707608-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000505350.2(APC):n.-110C>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000943 in 1,060,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 9.4e-7 ( 0 hom. )

Consequence

APC
ENST00000505350.2 non_coding_transcript_exon

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.50

Publications

0 publications found

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 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

APC links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.36).

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	Protein
APC	NR_176365.1 link	n.111C>A	non_coding_transcript_exon_variant	Exon 1 of 13
APC	NR_176366.1 link	n.111C>A	non_coding_transcript_exon_variant	Exon 1 of 14
APC	NM_001407446.1 link	c.-110C>A	5_prime_UTR_variant	Exon 1 of 16	NP_001394375.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	Protein	UniProt
APC	ENST00000505350.2 link	n.-110C>A	non_coding_transcript_exon_variant	Exon 1 of 16	3	ENSP00000481752.1	A0A087WYF3
APC	ENST00000713636.1 link	n.-293C>A	non_coding_transcript_exon_variant	Exon 1 of 17		ENSP00000518937.1
APC	ENST00000509732.6 link	c.-60C>A	5_prime_UTR_variant	Exon 1 of 16	4	ENSP00000426541.2	D6RFL6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.43e-7

AC:

AN:

1060870

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

517762

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

24922

American (AMR)

AF:

0.00

AC:

AN:

28252

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18652

East Asian (EAS)

AF:

0.00

AC:

AN:

22018

South Asian (SAS)

AF:

0.00

AC:

AN:

70842

European-Finnish (FIN)

AF:

0.00

AC:

AN:

12160

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4344

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

837090

Other (OTH)

AF:

0.0000235

AC:

AN:

42590

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Benign

0.81

PhyloP100

1.5

PromoterAI

-0.17

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over