chr12-132649398-C-G

Variant names:

• chr12-132649398-C-G
• rs563990655
• NM_006231.4:c.3913G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_006231.4(POLE):​c.3913G>C​(p.Gly1305Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1305E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: POLE NM_006231.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.91
• Publications: 0 publications found

Genes affected

POLE (HGNC:9177): (DNA polymerase epsilon, catalytic subunit) This gene encodes the catalytic subunit of DNA polymerase epsilon. The enzyme is involved in DNA repair and chromosomal DNA replication. Mutations in this gene have been associated with colorectal cancer 12 and facial dysmorphism, immunodeficiency, livedo, and short stature. [provided by RefSeq, Sep 2013]

POLE Gene-Disease associations (from GenCC):

• POLE-related polyposis and colorectal cancer syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• colorectal cancer, susceptibility to, 12

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
• facial dysmorphism-immunodeficiency-livedo-short stature syndrome

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiency

  Inheritance: AR Classification: STRONG Submitted by: G2P
• IMAGe syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Polymerase proofreading-related adenomatous polyposis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POLE	NM_006231.4	c.3913G>C	p.Gly1305Arg	missense_variant	Exon 31 of 49	ENST00000320574.10	NP_006222.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POLE	ENST00000320574.10	c.3913G>C	p.Gly1305Arg	missense_variant	Exon 31 of 49	1	NM_006231.4	ENSP00000322570.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Mar 28, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.G1305R variant (also known as c.3913G>C), located in coding exon 31 of the POLE gene, results from a G to C substitution at nucleotide position 3913. The glycine at codon 1305 is replaced by arginine, an amino acid with dissimilar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Uncertain	0.019	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.16	T;.
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.26
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.79	T;T
M_CAP	Benign	0.041	D
MetaRNN	Uncertain	0.59	D;D
MetaSVM	Benign	-0.74	T
MutationAssessor	Pathogenic	3.1	M;.
PhyloP100		3.9
PrimateAI	Benign	0.43	T
PROVEAN	Uncertain	-2.5	D;D
REVEL	Benign	0.22
Sift	Benign	0.20	T;T
Sift4G	Benign	0.20	T;T
Polyphen		0.012	B;B
Vest4		0.67
MutPred		0.33		Gain of MoRF binding (P = 0.024);.;
MVP		0.62
MPC		0.23
ClinPred		0.90	D
GERP RS		3.9
Varity_R		0.21
gMVP		0.66
Mutation Taster		=94/6	polymorphism

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: rs563990655; hg19: chr12-133225984;