dbSNP rs779014379: PLCG2:p.Arg1133Ser (chr16-81939975-C-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_002661.5(PLCG2):c.3397C>A(p.Arg1133Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,496 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R1133H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PLCG2
NM_002661.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.70

Publications

0 publications found

Variant links:

Genes affected

PLCG2 (HGNC:9066): (phospholipase C gamma 2) The protein encoded by this gene is a transmembrane signaling enzyme that catalyzes the conversion of 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate to 1D-myo-inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG) using calcium as a cofactor. IP3 and DAG are second messenger molecules important for transmitting signals from growth factor receptors and immune system receptors across the cell membrane. Mutations in this gene have been found in autoinflammation, antibody deficiency, and immune dysregulation syndrome and familial cold autoinflammatory syndrome 3. [provided by RefSeq, Mar 2014]

PLCG2 Gene-Disease associations (from GenCC):

autoinflammation-PLCG2-associated antibody deficiency-immune dysregulation
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P
familial cold autoinflammatory syndrome 3
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

PLCG2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.906

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
PLCG2	NM_002661.5 link	c.3397C>A	p.Arg1133Ser	missense_variant	Exon 30 of 33	ENST00000564138.6	NP_002652.2
PLCG2	NM_001425749.1 link	c.3397C>A	p.Arg1133Ser	missense_variant	Exon 31 of 34		NP_001412678.1
PLCG2	NM_001425750.1 link	c.3397C>A	p.Arg1133Ser	missense_variant	Exon 30 of 33		NP_001412679.1
PLCG2	NM_001425751.1 link	c.3397C>A	p.Arg1133Ser	missense_variant	Exon 31 of 34		NP_001412680.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLCG2	ENST00000564138.6 link	c.3397C>A	p.Arg1133Ser	missense_variant	Exon 30 of 33	1	NM_002661.5	ENSP00000482457.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461496

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727096

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111638

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.38

BayesDel_noAF

Pathogenic

0.30

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.93

D;.

Eigen

Pathogenic

0.93

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.95

D;D

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.91

D;D

MetaSVM

Uncertain

0.27

MutationAssessor

Pathogenic

3.2

M;.

PhyloP100

5.7

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-5.8

.;D

REVEL

Pathogenic

0.77

Sift

Pathogenic

0.0

.;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.89

MutPred

0.69

Loss of stability (P = 0.0698);Loss of stability (P = 0.0698);

MVP

0.93

MPC

1.0

ClinPred

1.0

GERP RS

5.8

Varity_R

0.94

gMVP

0.88

Mutation Taster

=36/64

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over