9-137180341-T-C

Position:

• chr9-137180341-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_013366.4(ANAPC2):​c.1730A>G​(p.Glu577Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: ANAPC2 NM_013366.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.45

Genes affected

ANAPC2 (HGNC:19989): (anaphase promoting complex subunit 2) A large protein complex, termed the anaphase-promoting complex (APC), or the cyclosome, promotes metaphase-anaphase transition by ubiquitinating its specific substrates such as mitotic cyclins and anaphase inhibitor, which are subsequently degraded by the 26S proteasome. Biochemical studies have shown that the vertebrate APC contains eight subunits. The composition of the APC is highly conserved in organisms from yeast to humans. The product of this gene is a component of the complex and shares sequence similarity with a recently identified family of proteins called cullins, which may also be involved in ubiquitin-mediated degradation. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ANAPC2	NM_013366.4	c.1730A>G	p.Glu577Gly	missense_variant	10/13	ENST00000323927.3	NP_037498.1
ANAPC2	XM_047423274.1	c.1730A>G	p.Glu577Gly	missense_variant	10/13		XP_047279230.1
ANAPC2	XM_047423275.1	c.1730A>G	p.Glu577Gly	missense_variant	10/12		XP_047279231.1
ANAPC2	XM_047423276.1	c.1730A>G	p.Glu577Gly	missense_variant	10/13		XP_047279232.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ANAPC2	ENST00000323927.3	c.1730A>G	p.Glu577Gly	missense_variant	10/13	1	NM_013366.4	ENSP00000314004	P1
ANAPC2	ENST00000483432.1	n.70A>G		non_coding_transcript_exon_variant	2/3	2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 30, 2021

The c.1730A>G (p.E577G) alteration is located in exon 10 (coding exon 10) of the ANAPC2 gene. This alteration results from a A to G substitution at nucleotide position 1730, causing the glutamic acid (E) at amino acid position 577 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.058	T
BayesDel_noAF	Benign	-0.15
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.84	T
M_CAP	Pathogenic	0.34	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Uncertain	-0.17	T
MutationAssessor	Benign	1.7	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.64	T
PROVEAN	Uncertain	-2.9	D
REVEL	Uncertain	0.56
Sift	Benign	0.038	D
Sift4G	Uncertain	0.059	T
Polyphen		0.98	D
Vest4		0.69
MutPred		0.59		Loss of stability (P = 0.0359);
MVP		0.71
MPC		1.0
ClinPred		0.92	D
GERP RS		3.6
Varity_R		0.52
gMVP		0.48

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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

Other links and lift over

dbSNP: rs1418835089; hg19: chr9-140074793; COSMIC: COSV100119251; COSMIC: COSV100119251;