4-184659380-G-A

Variant names:

• chr4-184659380-G-A
• NM_152683.4:c.221G>A

Variant summary

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

The NM_152683.4(PRIMPOL):​c.221G>A​(p.Gly74Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PRIMPOL NM_152683.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.50
• Publications: 0 publications found

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]

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_152683.4. 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
	PRIMPOL	NM_152683.4	MANE Select	c.221G>A	p.Gly74Glu	missense	Exon 4 of 14	NP_689896.1	Q96LW4-1
	PRIMPOL	NM_001345891.2		c.221G>A	p.Gly74Glu	missense	Exon 4 of 15	NP_001332820.1
	PRIMPOL	NM_001345892.2		c.221G>A	p.Gly74Glu	missense	Exon 4 of 15	NP_001332821.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRIMPOL	ENST00000314970.11	TSL:1 MANE Select	c.221G>A	p.Gly74Glu	missense	Exon 4 of 14	ENSP00000313816.6	Q96LW4-1
	PRIMPOL	ENST00000512834.5	TSL:1	c.221G>A	p.Gly74Glu	missense	Exon 4 of 14	ENSP00000425316.1	Q96LW4-2
	PRIMPOL	ENST00000515774.5	TSL:1	c.-167G>A		5_prime_UTR	Exon 3 of 13	ENSP00000421913.1	A0A5S6SZ32

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.66
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.84	T
M_CAP	Benign	0.066	D
MetaRNN	Uncertain	0.63	D
MetaSVM	Benign	-0.47	T
MutationAssessor	Pathogenic	2.9	M
PhyloP100		4.5
PrimateAI	Uncertain	0.55	T
PROVEAN	Pathogenic	-6.0	D
REVEL	Uncertain	0.33
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.55
MutPred		0.57		Loss of ubiquitination at K70 (P = 0.1016)
MVP		0.58
MPC		0.25
ClinPred		0.99	D
GERP RS		5.5
Varity_R		0.64
gMVP		0.72
Mutation Taster		=71/29	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

hg19: chr4-185580534;