Genetic Variant PRIMPOL:p.Pro39Leu (chr4-184657256-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_152683.4(PRIMPOL):c.116C>T(p.Pro39Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,524 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PRIMPOL
NM_152683.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.01

Publications

0 publications found

Variant links:

Genes affected

PRIMPOL (HGNC:26575): (primase and DNA directed polymerase) This gene encodes a DNA primase-polymerase that belongs to a superfamily of archaeao-eukaryotic primases. Members of this family have primase activity, catalyzing the synthesis of short RNA primers that serve as starting points for DNA synthesis, as well as DNA polymerase activity. The encoded protein facilitates DNA damage tolerance by mediating uninterrupted fork progression after UV irradiation and reinitiating DNA synthesis. An allelic variant in this gene is associated with myopia 22. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2016]

PRIMPOL links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20018092).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRIMPOL	NM_152683.4 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 3 of 14	ENST00000314970.11	NP_689896.1	Q96LW4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRIMPOL	ENST00000314970.11 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 3 of 14	1	NM_152683.4	ENSP00000313816.6		Q96LW4-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251182

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461524

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727062

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33460

American (AMR)

AF:

0.00

AC:

AN:

44672

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39652

South Asian (SAS)

AF:

0.00

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111850

Other (OTH)

AF:

0.00

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 29, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.116C>T (p.P39L) alteration is located in exon 3 (coding exon 1) of the PRIMPOL gene. This alteration results from a C to T substitution at nucleotide position 116, causing the proline (P) at amino acid position 39 to be replaced by a leucine (L). 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

0.13

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0044

T;T;.

Eigen

Benign

0.039

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.89

.;D;D

M_CAP

Benign

0.013

MetaRNN

Benign

0.20

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;L;L

PhyloP100

4.0

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.7

N;N;N

REVEL

Benign

0.13

Sift

Benign

0.085

T;T;T

Sift4G

Benign

0.10

T;T;T

Polyphen

0.39

B;B;.

Vest4

0.22

MutPred

0.35

Loss of glycosylation at P39 (P = 0.0079);Loss of glycosylation at P39 (P = 0.0079);Loss of glycosylation at P39 (P = 0.0079);

MVP

0.44

MPC

0.11

ClinPred

0.52

GERP RS

5.9

Varity_R

0.34

gMVP

0.44

Mutation Taster

=82/18

polymorphism

(source)

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

4-184657256-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over