Genetic Variant PLCG2:p.His641His (chr16-81910709-C-T) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_002661.5(PLCG2):c.1923C>T(p.His641His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000214 in 1,608,850 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

PLCG2
NM_002661.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0100

Publications

1 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 -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.34).

BP6

Variant 16-81910709-C-T is Benign according to our data. Variant chr16-81910709-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 739430.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.01 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000158 (24/152232) while in subpopulation NFE AF = 0.000265 (18/68040). AF 95% confidence interval is 0.000171. There are 0 homozygotes in GnomAd4. There are 13 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 24 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.1923C>T	p.His641His	synonymous	Exon 18 of 33	NP_002652.2	P16885
PLCG2	NM_001425749.1		c.1923C>T	p.His641His	synonymous	Exon 19 of 34	NP_001412678.1	P16885
PLCG2	NM_001425750.1		c.1923C>T	p.His641His	synonymous	Exon 18 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.1923C>T	p.His641His	synonymous	Exon 18 of 33	ENSP00000482457.1	P16885
PLCG2	ENST00000567980.5	TSL:1	n.2167C>T		non_coding_transcript_exon	Exon 17 of 20
PLCG2	ENST00000902427.1		c.2076C>T	p.His692His	synonymous	Exon 19 of 34	ENSP00000572486.1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152232

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.000168

AC:

AN:

244522

AF XY:

0.000203

show subpopulations

Gnomad AFR exome

AF:

0.000130

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00119

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000586

Gnomad NFE exome

AF:

0.000212

Gnomad OTH exome

AF:

0.000332

GnomAD4 exome

AF:

0.000220

AC:

320

AN:

1456618

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

165

AN XY:

724970

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33478

American (AMR)

AF:

0.0000224

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00134

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.0000827

AC:

AN:

48340

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000243

AC:

270

AN:

1111894

Other (OTH)

AF:

0.000149

AC:

AN:

60358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<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:

0.000158

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74374

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41460

American (AMR)

AF:

0.0000654

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000265

AC:

AN:

68040

Other (OTH)

AF:

0.000479

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

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:

0.000299

Hom.:

Bravo

AF:

0.000162

EpiCase

AF:

0.000709

EpiControl

AF:

0.000178

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial cold autoinflammatory syndrome 3 (1)

Familial cold autoinflammatory syndrome 3;C3553961:Autoinflammation-PLCG2-associated antibody deficiency-immune dysregulation (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.34

CADD

Benign

8.0

(source)

DANN

Benign

0.84

PhyloP100

-0.010

Mutation Taster

=100/0

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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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