16-81786021-C-G

Variant names:

• chr16-81786021-C-G
• NM_002661.5:c.32C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002661.5(PLCG2):​c.32C>G​(p.Ala11Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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. A11V) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PLCG2 NM_002661.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.54

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18254983).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLCG2	NM_002661.5	c.32C>G	p.Ala11Gly	missense_variant	Exon 2 of 33	ENST00000564138.6	NP_002652.2
PLCG2	NM_001425749.1	c.32C>G	p.Ala11Gly	missense_variant	Exon 3 of 34		NP_001412678.1
PLCG2	NM_001425750.1	c.32C>G	p.Ala11Gly	missense_variant	Exon 2 of 33		NP_001412679.1
PLCG2	NM_001425751.1	c.32C>G	p.Ala11Gly	missense_variant	Exon 3 of 34		NP_001412680.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLCG2	ENST00000564138.6	c.32C>G	p.Ala11Gly	missense_variant	Exon 2 of 33	1	NM_002661.5	ENSP00000482457.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461830 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727226

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.39
CADD	Uncertain	24
DANN	Benign	0.94
DEOGEN2	Benign	0.23	T;T;.
Eigen	Benign	-0.21
Eigen_PC	Benign	0.027
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.75	T;T;T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.18	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.14	.;N;.
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.96	N;.;N
REVEL	Benign	0.14
Sift	Benign	0.78	T;.;T
Sift4G	Benign	0.095	T;T;T
Polyphen		0.028	.;B;.
Vest4		0.24, 0.20
MutPred		0.62		Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);
MVP		0.51
MPC		0.066
ClinPred		0.81	D
GERP RS		5.1
Varity_R		0.14
gMVP		0.36

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr16-81819626;