19-50402286-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002691.4(POLD1):c.671G>C(p.Arg224Pro) 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 pathogenic 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. R224H) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: POLD1 NM_002691.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.08

Genes affected

POLD1 (HGNC:9175): (DNA polymerase delta 1, catalytic subunit) This gene encodes the 125-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. Alternatively spliced transcript variants have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Mar 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.847

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POLD1	NM_002691.4	c.671G>C	p.Arg224Pro	missense_variant	6/27	ENST00000440232.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POLD1	ENST00000440232.7	c.671G>C	p.Arg224Pro	missense_variant	6/27	1	NM_002691.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Benign	-0.0026	T
BayesDel_noAF	Benign	-0.24
Cadd	Pathogenic	32
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T;.;.;T
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.93	D
M_CAP	Uncertain	0.094	D
MetaRNN	Pathogenic	0.85	D;D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.7	M;.;.;M
MutationTaster	Benign	0.98	D
PrimateAI	Uncertain	0.62	T
PROVEAN	Uncertain	-3.5	D;.;.;.
REVEL	Benign	0.24
Sift	Uncertain	0.0010	D;.;.;.
Sift4G	Pathogenic	0.0010	D;D;D;D
Polyphen		0.99	D;.;.;D
Vest4		0.62
MutPred		0.81		Loss of MoRF binding (P = 0.005);Loss of MoRF binding (P = 0.005);Loss of MoRF binding (P = 0.005);Loss of MoRF binding (P = 0.005);
MVP		0.81
MPC		0.85
ClinPred		0.96	D
GERP RS		3.7
Varity_R		0.92
gMVP		0.92

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: chr19-50905543;