16-81786048-G-C

Variant names:

• chr16-81786048-G-C
• rs1910955135
• NM_002661.5:c.59G>C

Variant summary

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

The NM_002661.5(PLCG2):​c.59G>C​(p.Arg20Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: PLCG2 NM_002661.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.60

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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLCG2	NM_002661.5	c.59G>C	p.Arg20Thr	missense_variant	Exon 2 of 33	ENST00000564138.6	NP_002652.2
PLCG2	NM_001425749.1	c.59G>C	p.Arg20Thr	missense_variant	Exon 3 of 34		NP_001412678.1
PLCG2	NM_001425750.1	c.59G>C	p.Arg20Thr	missense_variant	Exon 2 of 33		NP_001412679.1
PLCG2	NM_001425751.1	c.59G>C	p.Arg20Thr	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.59G>C	p.Arg20Thr	missense_variant	Exon 2 of 33	1	NM_002661.5	ENSP00000482457.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461878 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727236

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	26
DANN	Uncertain	0.98
DEOGEN2	Benign	0.40	T;D;.
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.91	D;D;D
M_CAP	Benign	0.038	D
MetaRNN	Uncertain	0.74	D;D;D
MetaSVM	Benign	-0.34	T
MutationAssessor	Uncertain	2.1	.;M;.
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-3.1	D;.;D
REVEL	Uncertain	0.40
Sift	Benign	0.060	T;.;T
Sift4G	Uncertain	0.018	D;T;T
Polyphen		1.0	.;D;.
Vest4		0.85, 0.84
MutPred		0.42		Loss of helix (P = 0.0167);Loss of helix (P = 0.0167);Loss of helix (P = 0.0167);
MVP		0.84
MPC		0.46
ClinPred		0.97	D
GERP RS		5.1
Varity_R		0.49
gMVP		0.70

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

LitVar

Other links and lift over

dbSNP: rs1910955135; hg19: chr16-81819653;