chr16-81870842-A-T

Variant names:

• chr16-81870842-A-T
• rs62046684
• NM_002661.5:c.565-10A>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_002661.5(PLCG2):​c.565-10A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 7.3e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PLCG2 NM_002661.5 intron
• Scores: Splicing: ADA: 0.00001250
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.32
• Publications: 2 publications found

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: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P
• familial cold autoinflammatory syndrome 3

  Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLCG2	NM_002661.5	c.565-10A>T		intron_variant	Intron 6 of 32	ENST00000564138.6	NP_002652.2
PLCG2	NM_001425749.1	c.565-10A>T		intron_variant	Intron 7 of 33		NP_001412678.1
PLCG2	NM_001425750.1	c.565-10A>T		intron_variant	Intron 6 of 32		NP_001412679.1
PLCG2	NM_001425751.1	c.565-10A>T		intron_variant	Intron 7 of 33		NP_001412680.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLCG2	ENST00000564138.6	c.565-10A>T		intron_variant	Intron 6 of 32	1	NM_002661.5	ENSP00000482457.1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152144 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000957 AC: 2 AN: 209084 AF XY: 0.00000874

Gnomad AFR exome AF: 0.0000737

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000994

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 7.29e-7 AC: 1 AN: 1371314 Hom.: 0 Cov.: 20 AF XY: 0.00000146 AC XY: 1 AN XY: 684450

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 30958

American (AMR) AF: 0.00 AC: 0 AN: 38140

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24896

East Asian (EAS) AF: 0.00 AC: 0 AN: 38578

South Asian (SAS) AF: 0.00 AC: 0 AN: 79666

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52452

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5502

European-Non Finnish (NFE) AF: 9.58e-7 AC: 1 AN: 1044056

Other (OTH) AF: 0.00 AC: 0 AN: 57066

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000131 AC: 2 AN: 152262 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74426

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000481 AC: 2 AN: 41568

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2112

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000203476), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 27

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.15
DANN	Benign	0.47
PhyloP100		-2.3

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000013
dbscSNV1_RF	Benign	0.0
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: rs62046684; hg19: chr16-81904447;