NM_002660.3:c.787G>C

Variant names:

• chr20-41163273-G-C
• rs780081401
• NM_002660.3:c.787G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002660.3(PLCG1):​c.787G>C​(p.Gly263Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000000706 in 1,416,410 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Synonymous variant affecting the same amino acid position (i.e. G263G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: PLCG1 NM_002660.3 missense, splice_region
• Scores: Splicing: ADA: 0.001663
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.90
• Publications: 0 publications found

Genes affected

PLCG1 (HGNC:9065): (phospholipase C gamma 1) The protein encoded by this gene catalyzes the formation of inositol 1,4,5-trisphosphate and diacylglycerol from phosphatidylinositol 4,5-bisphosphate. This reaction uses calcium as a cofactor and plays an important role in the intracellular transduction of receptor-mediated tyrosine kinase activators. For example, when activated by SRC, the encoded protein causes the Ras guanine nucleotide exchange factor RasGRP1 to translocate to the Golgi, where it activates Ras. Also, this protein has been shown to be a major substrate for heparin-binding growth factor 1 (acidic fibroblast growth factor)-activated tyrosine kinase. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

PLCG1 Gene-Disease associations (from GenCC):

• immune dysregulation, autoimmunity, and autoinflammation

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15501752).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002660.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLCG1	NM_002660.3	MANE Select	c.787G>C	p.Gly263Arg	missense splice_region	Exon 8 of 32	NP_002651.2
	PLCG1	NM_182811.2		c.787G>C	p.Gly263Arg	missense splice_region	Exon 8 of 32	NP_877963.1	P19174-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLCG1	ENST00000685551.1	MANE Select	c.787G>C	p.Gly263Arg	missense splice_region	Exon 8 of 32	ENSP00000508698.1	P19174-2
	PLCG1	ENST00000373271.5	TSL:1	c.787G>C	p.Gly263Arg	missense splice_region	Exon 8 of 32	ENSP00000362368.1	P19174-1
	PLCG1	ENST00000244007.7	TSL:5	c.787G>C	p.Gly263Arg	missense splice_region	Exon 9 of 33	ENSP00000244007.3	P19174-2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.00000468 AC: 1 AN: 213770 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000358

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 7.06e-7 AC: 1 AN: 1416410 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 700854

African (AFR) AF: 0.00 AC: 0 AN: 31674

American (AMR) AF: 0.0000268 AC: 1 AN: 37356

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22948

East Asian (EAS) AF: 0.00 AC: 0 AN: 39360

South Asian (SAS) AF: 0.00 AC: 0 AN: 79124

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51650

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5492

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1090602

Other (OTH) AF: 0.00 AC: 0 AN: 58204

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	21
DANN	Benign	0.93
DEOGEN2	Benign	0.36	T
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.015
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.0044	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	-1.0	N
PhyloP100		4.9
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	1.8	N
REVEL	Benign	0.12
Sift	Benign	0.46	T
Sift4G	Benign	0.40	T
Polyphen		0.0010	B
Vest4		0.22
MutPred		0.38		Loss of relative solvent accessibility (P = 0.107)
MVP		0.52
ClinPred		0.65	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.040
gMVP		0.46
Mutation Taster		=57/43	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0017
dbscSNV1_RF	Benign	0.038
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

Other links and lift over

dbSNP: rs780081401; hg19: chr20-39791913;