rs766325173

Positions:

• chr5-112767196-C-G
• chr5-112767196-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000038.6(APC):​c.228C>G​(p.Asn76Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N76H) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: APC NM_000038.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.159

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20374492).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
APC	NM_000038.6	c.228C>G	p.Asn76Lys	missense_variant	4/16	ENST00000257430.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
APC	ENST00000257430.9	c.228C>G	p.Asn76Lys	missense_variant	4/16	5	NM_000038.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.47
BayesDel_addAF	Benign	-0.0093	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	17
DANN	Uncertain	0.98
DEOGEN2	Benign	0.33	T;.;D;D;T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.27
FATHMM_MKL	Benign	0.75	D
LIST_S2	Uncertain	0.95	D;D;.;D;D
M_CAP	Benign	0.054	D
MetaRNN	Benign	0.20	T;T;T;T;T
MetaSVM	Benign	-0.59	T
MutationAssessor	Benign	1.1	.;.;L;L;.
MutationTaster	Benign	0.97	N;N;N
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-1.3	N;N;N;N;N
REVEL	Benign	0.10
Sift	Uncertain	0.029	D;D;D;D;D
Sift4G	Uncertain	0.037	D;D;T;T;T
Polyphen		0.89	.;.;P;P;.
Vest4		0.76, 0.73
MutPred		0.20		Gain of ubiquitination at N76 (P = 0.0075);.;Gain of ubiquitination at N76 (P = 0.0075);Gain of ubiquitination at N76 (P = 0.0075);Gain of ubiquitination at N76 (P = 0.0075);
MVP		0.84
ClinPred		0.56	D
GERP RS		0.70
Varity_R		0.16
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-112102893;