Genetic Variant PRRC2A:p.Ala37Ser (chr6-31622898-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004638.4(PRRC2A):c.109G>T(p.Ala37Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,459,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A37T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

PRRC2A
NM_004638.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.41

Publications

1 publications found

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:

ENSG00000291302 (HGNC:):

ENSG00000291302 links:

SNORA38 (HGNC:32631): (small nucleolar RNA, H/ACA box 38)

SNORA38 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15887874).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRRC2A	NM_004638.4 link	c.109G>T	p.Ala37Ser	missense_variant	Exon 2 of 31	ENST00000376033.3	NP_004629.3	P48634-1A0A1U9X974
PRRC2A	NM_080686.3 link	c.109G>T	p.Ala37Ser	missense_variant	Exon 2 of 31		NP_542417.2	P48634-1A0A1U9X974
PRRC2A	XM_047419336.1 link	c.109G>T	p.Ala37Ser	missense_variant	Exon 2 of 30		XP_047275292.1
SNORA38	NR_002971.1 link	n.-181G>T		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRRC2A	ENST00000376033.3 link	c.109G>T	p.Ala37Ser	missense_variant	Exon 2 of 31	1	NM_004638.4	ENSP00000365201.2		P48634-1
ENSG00000291302	ENST00000706625.1 link	c.*38G>T		downstream_gene_variant				ENSP00000516471.1		A0A9L9PY68

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1459788

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726392

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33456

American (AMR)

AF:

0.00

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

86208

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1110124

Other (OTH)

AF:

0.00

AC:

AN:

60322

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.0029

T;T

Eigen

Benign

-0.035

Eigen_PC

Benign

0.020

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.92

.;D

M_CAP

Benign

0.0076

MetaRNN

Benign

0.16

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

L;L

PhyloP100

1.4

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-0.23

N;N

REVEL

Benign

0.10

Sift

Benign

0.43

T;T

Sift4G

Benign

0.23

T;T

Polyphen

0.77

P;P

Vest4

0.26

MutPred

0.63

Gain of disorder (P = 0.0575);Gain of disorder (P = 0.0575);

MVP

0.23

MPC

0.88

ClinPred

0.40

GERP RS

2.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.060

gMVP

0.33

Mutation Taster

=90/10

polymorphism

(source)

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

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6-31622898-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over