20-4699330-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_000311.5(PRNP):c.110G>A(p.Arg37Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000248 in 1,613,738 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

PRNP
NM_000311.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.64

Variant links:

Genes affected

PRNP (HGNC:9449): (prion protein (Kanno blood group)) The protein encoded by this gene is a membrane glycosylphosphatidylinositol-anchored glycoprotein that tends to aggregate into rod-like structures. The encoded protein contains a highly unstable region of five tandem octapeptide repeats. This gene is found on chromosome 20, approximately 20 kbp upstream of a gene which encodes a biochemically and structurally similar protein to the one encoded by this gene. Mutations in the repeat region as well as elsewhere in this gene have been associated with Creutzfeldt-Jakob disease, fatal familial insomnia, Gerstmann-Straussler disease, Huntington disease-like 1, and kuru. An overlapping open reading frame has been found for this gene that encodes a smaller, structurally unrelated protein, AltPrp. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2014]

PRNP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.766

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRNP	NM_000311.5 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	2/2	ENST00000379440.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRNP	ENST00000379440.9 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	2/2	1	NM_000311.5	P1	P04156-1
PRNP	ENST00000424424.2 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	2/2	1		P1	P04156-1
PRNP	ENST00000430350.2 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	2/2	1		P1	P04156-1
PRNP	ENST00000457586.2 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	2/2	1		P1	P04156-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151920

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461818

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727216

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:

0.0000187

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151920

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74202

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000224

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 09, 2021

The c.110G>A (p.R37Q) alteration is located in exon 2 (coding exon 1) of the PRNP gene. This alteration results from a G to A substitution at nucleotide position 110, causing the arginine (R) at amino acid position 37 to be replaced by a glutamine (Q). 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

0.47

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.17

Cadd

Uncertain

Dann

Pathogenic

1.0

DEOGEN2

Benign

0.025

T;T;T;.

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Uncertain

0.87

M_CAP

Uncertain

0.14

MetaRNN

Pathogenic

0.77

D;D;D;D

MetaSVM

Pathogenic

0.81

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.85

N;N;N;N

REVEL

Pathogenic

0.65

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Benign

0.27

T;T;T;T

Polyphen

1.0

D;D;.;.

Vest4

0.56

MutPred

0.59

Loss of MoRF binding (P = 0.0194);Loss of MoRF binding (P = 0.0194);Loss of MoRF binding (P = 0.0194);Loss of MoRF binding (P = 0.0194);

MVP

1.0

MPC

1.5

ClinPred

1.0

GERP RS

4.8

Varity_R

0.27

gMVP

0.71

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

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