Variant chr12-56731723-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000946.3(PRIM1):c.1255G>T(p.Asp419Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000165 in 1,515,708 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

PRIM1
NM_000946.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.49

Variant links:

Genes affected

PRIM1 (HGNC:9369): (DNA primase subunit 1) The replication of DNA in eukaryotic cells is carried out by a complex chromosomal replication apparatus, in which DNA polymerase alpha and primase are two key enzymatic components. Primase, which is a heterodimer of a small subunit and a large subunit, synthesizes small RNA primers for the Okazaki fragments made during discontinuous DNA replication. The protein encoded by this gene is the small, 49 kDa primase subunit. [provided by RefSeq, Jul 2008]

PRIM1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27616915).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRIM1	NM_000946.3 linkuse as main transcript	c.1255G>T	p.Asp419Tyr	missense_variant	13/13	ENST00000338193.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
PRIM1	ENST00000338193.11 linkuse as main transcript	c.1255G>T	p.Asp419Tyr	missense_variant	13/13	1	NM_000946.3	P1
PRIM1	ENST00000672280.1 linkuse as main transcript	c.1372G>T	p.Asp458Tyr	missense_variant	14/14
PRIM1	ENST00000706566.1 linkuse as main transcript	c.1255G>T	p.Asp419Tyr	missense_variant, NMD_transcript_variant	13/14
PRIM1	ENST00000552590.6 linkuse as main transcript	c.*699G>T		3_prime_UTR_variant, NMD_transcript_variant	13/13	5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

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

GnomAD4 exome

AF:

0.0000176

AC:

AN:

1363566

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

674248

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000209

Gnomad4 OTH exome

AF:

0.0000352

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 23, 2023

The c.1255G>T (p.D419Y) alteration is located in exon 13 (coding exon 13) of the PRIM1 gene. This alteration results from a G to T substitution at nucleotide position 1255, causing the aspartic acid (D) at amino acid position 419 to be replaced by a tyrosine (Y). 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

Uncertain

0.37

BayesDel_addAF

Uncertain

0.012

BayesDel_noAF

Benign

-0.22

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.051

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.84

M_CAP

Benign

0.035

MetaRNN

Benign

0.28

MetaSVM

Benign

-0.55

MutationAssessor

Uncertain

2.9

MutationTaster

Benign

0.89

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-2.7

REVEL

Benign

0.16

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0030

Polyphen

0.99

Vest4

0.32

MutPred

0.35

Loss of solvent accessibility (P = 0.0152);

MVP

0.55

MPC

1.2

ClinPred

0.95

GERP RS

4.6

Varity_R

0.47

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over