rs16990018

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000311.5(PRNP):c.512A>G(p.Asn171Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00273 in 1,614,052 control chromosomes in the GnomAD database, including 99 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.015 ( 50 hom., cov: 32)

Exomes 𝑓: 0.0015 ( 49 hom. )

Consequence

PRNP
NM_000311.5 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts U:1B:7

Conservation

PhyloP100: -0.149

Publications

28 publications found

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 Gene-Disease associations (from GenCC):

Gerstmann-Straussler-Scheinker syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Orphanet
Huntington disease-like 1
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
inherited Creutzfeldt-Jakob disease
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
familial Alzheimer-like prion disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
fatal familial insomnia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
PrP systemic amyloidosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PRNP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.01805228).

BP6

Variant 20-4699732-A-G is Benign according to our data. Variant chr20-4699732-A-G is described in ClinVar as Benign. ClinVar VariationId is 13408.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAdExome4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0503 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRNP	NM_000311.5 link	c.512A>G	p.Asn171Ser	missense_variant	Exon 2 of 2	ENST00000379440.9	NP_000302.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PRNP	ENST00000379440.9 link	c.512A>G	p.Asn171Ser	missense_variant	Exon 2 of 2	1	NM_000311.5	ENSP00000368752.4	P04156-1
PRNP	ENST00000424424.2 link	c.512A>G	p.Asn171Ser	missense_variant	Exon 2 of 2	1		ENSP00000411599.2	P04156-1A2A2V1
PRNP	ENST00000430350.2 link	c.512A>G	p.Asn171Ser	missense_variant	Exon 2 of 2	1		ENSP00000399376.2	P04156-1
PRNP	ENST00000457586.2 link	c.512A>G	p.Asn171Ser	missense_variant	Exon 2 of 2	1		ENSP00000415284.2	P04156-1X6RKS3

Frequencies

GnomAD3 genomes

AF:

0.0149

AC:

2266

AN:

152042

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0517

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00635

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00956

GnomAD2 exomes

AF:

0.00377

AC:

949

AN:

251490

AF XY:

0.00282

show subpopulations

Gnomad AFR exome

AF:

0.0525

Gnomad AMR exome

AF:

0.00225

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000527

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.00146

AC:

2131

AN:

1461892

Hom.:

Cov.:

AF XY:

0.00122

AC XY:

890

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.0524

AC:

1753

AN:

33480

American (AMR)

AF:

0.00320

AC:

143

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000927

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.000693

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000396

AC:

AN:

1112012

Other (OTH)

AF:

0.00296

AC:

179

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

164

328

491

655

819

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

162

216

270

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0150

AC:

2277

AN:

152160

Hom.:

Cov.:

AF XY:

0.0144

AC XY:

1070

AN XY:

74400

show subpopulations

African (AFR)

AF:

0.0518

AC:

2150

AN:

41496

American (AMR)

AF:

0.00634

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000194

AC:

AN:

5160

South Asian (SAS)

AF:

0.000208

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

67994

Other (OTH)

AF:

0.00946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

102

203

305

406

508

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00668

Hom.:

Bravo

AF:

0.0170

ESP6500AA

AF:

0.0474

AC:

209

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00496

AC:

602

Asia WGS

AF:

0.00318

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000296

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Sep 23, 2018

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 22995991, 22717776, 20981092, 9384372) -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Nov 26, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Spongiform encephalopathy with neuropsychiatric features

Uncertain:1

Feb 01, 2012

OMIM

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:literature only

- -

not specified

Benign:1

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Inherited prion disease

Benign:1

Mar 06, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Huntington disease-like 1

Benign:1

Jan 20, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.38

CADD

Benign

0.35

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.18

T;T;T;.

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.12

LIST_S2

Uncertain

0.87

.;D;D;D

MetaRNN

Benign

0.018

T;T;T;T

MetaSVM

Benign

-0.72

MutationAssessor

Benign

0.98

L;L;.;.

PhyloP100

-0.15

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.060

N;N;N;N

REVEL

Benign

0.14

Sift

Benign

0.085

T;T;T;T

Sift4G

Benign

0.60

T;T;T;T

Polyphen

0.018

B;B;.;.

Vest4

0.056

MVP

0.98

MPC

0.39

ClinPred

0.0014

GERP RS

-0.25

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.15

gMVP

0.67

Mutation Taster

=98/2

polymorphism (auto)

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over