6-31626021-C-T

Variant summary

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

The NM_004638.4(PRRC2A):c.841C>T(p.Arg281Cys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,611,736 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R281H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

PRRC2A
NM_004638.4 missense, splice_region

Scores

Splicing: ADA: 0.002147

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.07

Variant links:

Genes affected

PRRC2A (HGNC:13918): (proline rich coiled-coil 2A) A cluster of genes, BAT1-BAT5, has been localized in the vicinity of the genes for TNF alpha and TNF beta. These genes are all within the human major histocompatibility complex class III region. This gene has microsatellite repeats which are associated with the age-at-onset of insulin-dependent diabetes mellitus (IDDM) and possibly thought to be involved with the inflammatory process of pancreatic beta-cell destruction during the development of IDDM. This gene is also a candidate gene for the development of rheumatoid arthritis. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Dec 2010]

PRRC2A links:

Genome browser will be placed here

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=0.27968976).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PRRC2A	NM_004638.4 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant, splice_region_variant	9/31	ENST00000376033.3
PRRC2A	NM_080686.3 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant, splice_region_variant	9/31
PRRC2A	XM_047419336.1 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant, splice_region_variant	9/30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRRC2A	ENST00000376033.3 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant, splice_region_variant	9/31	1	NM_004638.4	P1	P48634-1
PRRC2A	ENST00000376007.8 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant, splice_region_variant	9/31	1		P1	P48634-1
PRRC2A	ENST00000464890.1 linkuse as main transcript	n.268C>T		non_coding_transcript_exon_variant	1/3	2
PRRC2A	ENST00000469577.5 linkuse as main transcript	n.686C>T		splice_region_variant, non_coding_transcript_exon_variant	7/8	5

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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

GnomAD3 exomes

AF:

0.0000490

AC:

AN:

245034

Hom.:

AF XY:

0.0000224

AC XY:

AN XY:

133662

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000176

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000550

Gnomad SAS exome

AF:

0.0000332

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000182

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1459486

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726112

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000203

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000233

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000262

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

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000342

AC:

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

Apr 07, 2022

The c.841C>T (p.R281C) alteration is located in exon 9 (coding exon 8) of the PRRC2A gene. This alteration results from a C to T substitution at nucleotide position 841, causing the arginine (R) at amino acid position 281 to be replaced by a cysteine (C). 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

0.53

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.21

Cadd

Pathogenic

Dann

Benign

0.97

DEOGEN2

Benign

0.14

T;T

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.94

M_CAP

Benign

0.020

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-4.3

D;D

REVEL

Benign

0.15

Sift

Uncertain

0.0010

D;D

Sift4G

Uncertain

0.012

D;D

Polyphen

1.0

D;D

Vest4

0.62

MutPred

0.26

Loss of methylation at R281 (P = 0.026);Loss of methylation at R281 (P = 0.026);

MVP

0.17

MPC

0.21

ClinPred

0.66

GERP RS

5.0

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Varity_R

0.34

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0021

dbscSNV1_RF

Benign

0.030

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