Genetic Variant NM_002661.5:c.771T>C (chr16-81889177-T-C) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_002661.5(PLCG2):c.771T>C(p.His257His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000401 in 1,587,818 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00090 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00035 ( 3 hom. )

Consequence

PLCG2
NM_002661.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -3.98

Publications

3 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: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
familial cold autoinflammatory syndrome 3
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet

PLCG2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 16-81889177-T-C is Benign according to our data. Variant chr16-81889177-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 540125.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.98 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000901 (136/150874) while in subpopulation AMR AF = 0.00614 (92/14992). AF 95% confidence interval is 0.00512. There are 0 homozygotes in GnomAd4. There are 75 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 136 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002661.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PLCG2	NM_002661.5	MANE Select	c.771T>C	p.His257His	synonymous	Exon 10 of 33	NP_002652.2	P16885
PLCG2	NM_001425749.1		c.771T>C	p.His257His	synonymous	Exon 11 of 34	NP_001412678.1	P16885
PLCG2	NM_001425750.1		c.771T>C	p.His257His	synonymous	Exon 10 of 33	NP_001412679.1	P16885

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PLCG2	ENST00000564138.6	TSL:1 MANE Select	c.771T>C	p.His257His	synonymous	Exon 10 of 33	ENSP00000482457.1	P16885
PLCG2	ENST00000567980.5	TSL:1	n.1015T>C		non_coding_transcript_exon	Exon 9 of 20
PLCG2	ENST00000902427.1		c.771T>C	p.His257His	synonymous	Exon 10 of 34	ENSP00000572486.1

Frequencies

GnomAD3 genomes

AF:

0.000902

AC:

136

AN:

150756

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000171

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00614

Gnomad ASJ

AF:

0.000867

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000354

Gnomad OTH

AF:

0.00388

GnomAD2 exomes

AF:

0.000650

AC:

154

AN:

236838

AF XY:

0.000609

show subpopulations

Gnomad AFR exome

AF:

0.000139

Gnomad AMR exome

AF:

0.00209

Gnomad ASJ exome

AF:

0.00248

Gnomad EAS exome

AF:

0.000170

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000402

Gnomad OTH exome

AF:

0.00171

GnomAD4 exome

AF:

0.000348

AC:

500

AN:

1436944

Hom.:

Cov.:

AF XY:

0.000348

AC XY:

249

AN XY:

715166

show subpopulations

African (AFR)

AF:

0.0000905

AC:

AN:

33140

American (AMR)

AF:

0.00247

AC:

108

AN:

43676

Ashkenazi Jewish (ASJ)

AF:

0.00218

AC:

AN:

25728

East Asian (EAS)

AF:

0.0000758

AC:

AN:

39560

South Asian (SAS)

AF:

0.000107

AC:

AN:

83944

European-Finnish (FIN)

AF:

0.0000567

AC:

AN:

52940

Middle Eastern (MID)

AF:

0.00315

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.000218

AC:

238

AN:

1092708

Other (OTH)

AF:

0.00104

AC:

AN:

59530

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

111

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

AF:

0.000901

AC:

136

AN:

150874

Hom.:

Cov.:

AF XY:

0.00102

AC XY:

AN XY:

73590

show subpopulations

African (AFR)

AF:

0.000170

AC:

AN:

41114

American (AMR)

AF:

0.00614

AC:

AN:

14992

Ashkenazi Jewish (ASJ)

AF:

0.000867

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5098

South Asian (SAS)

AF:

0.00

AC:

AN:

4598

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10468

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000354

AC:

AN:

67856

Other (OTH)

AF:

0.00384

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000621

Hom.:

Bravo

AF:

0.00155

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Familial cold autoinflammatory syndrome 3 (1)

PLCG2-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

0.072

(source)

DANN

Benign

0.64

PhyloP100

-4.0

Mutation Taster

=100/0

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over