chr7-44114868-G-A

Variant names:

• chr7-44114868-G-A
• rs775621069
• NM_006230.4:c.1327C>T

Variant summary

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

The NM_006230.4(POLD2):​c.1327C>T​(p.Arg443Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000112 in 1,613,756 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R443H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: POLD2 NM_006230.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.53
• Publications: 1 publications found

Genes affected

POLD2 (HGNC:9176): (DNA polymerase delta 2, accessory subunit) This gene encodes the 50-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3' to 5' exonuclease activity and plays a critical role in DNA replication and repair. The encoded protein is required for the stimulation of DNA polymerase delta activity by the processivity cofactor proliferating cell nuclear antigen (PCNA). Expression of this gene may be a marker for ovarian carcinomas. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 5. [provided by RefSeq, Mar 2012]

POLD2 Gene-Disease associations (from GenCC):

• non-severe combined immunodeficiency due to polymerase delta deficiency

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

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

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006230.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLD2	NM_006230.4	MANE Select	c.1327C>T	p.Arg443Cys	missense	Exon 11 of 11	NP_006221.3	P49005
	POLD2	NM_001127218.3		c.1327C>T	p.Arg443Cys	missense	Exon 11 of 11	NP_001120690.1	P49005
	POLD2	NM_001256879.2		c.1327C>T	p.Arg443Cys	missense	Exon 12 of 12	NP_001243808.1	P49005

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLD2	ENST00000610533.6	TSL:1 MANE Select	c.1327C>T	p.Arg443Cys	missense	Exon 11 of 11	ENSP00000480186.2	P49005
	POLD2	ENST00000452185.5	TSL:1	c.1327C>T	p.Arg443Cys	missense	Exon 11 of 11	ENSP00000395231.1	P49005
	POLD2	ENST00000881309.1		c.1354C>T	p.Arg452Cys	missense	Exon 11 of 11	ENSP00000551368.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152256 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000280 AC: 7 AN: 250120 AF XY: 0.0000148

Gnomad AFR exome AF: 0.0000624

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000464

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461500 Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7 AN XY: 727032

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.0000895 AC: 4 AN: 44702

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39692

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86228

European-Finnish (FIN) AF: 0.0000375 AC: 2 AN: 53334

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000630 AC: 7 AN: 1111818

Other (OTH) AF: 0.00 AC: 0 AN: 60362

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152256 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74388

African (AFR) AF: 0.0000241 AC: 1 AN: 41474

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.24
CADD	Pathogenic	29
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.21	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.93	D
M_CAP	Uncertain	0.093	D
MetaRNN	Uncertain	0.46	T
MetaSVM	Benign	-0.37	T
MutationAssessor	Pathogenic	3.0	M
PhyloP100		6.5
PrimateAI	Uncertain	0.61	T
PROVEAN	Pathogenic	-5.4	D
REVEL	Uncertain	0.35
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0090	D
Polyphen		1.0	D
Vest4		0.38
MutPred		0.57		Loss of solvent accessibility (P = 0.1077)
MVP		0.77
MPC		0.37
ClinPred		0.96	D
GERP RS		4.0
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.1
Varity_R		0.79
gMVP		0.72
Mutation Taster		=40/60	disease causing

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: rs775621069; hg19: chr7-44154467;