17-45112668-G-A

Position:

• chr17-45112668-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_133373.5(PLCD3):​c.2318C>T​(p.Ala773Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PLCD3 NM_133373.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.80

Genes affected

PLCD3 (HGNC:9061): (phospholipase C delta 3) This gene encodes a member of the phospholipase C family, which catalyze the hydrolysis of phosphatidylinositol 4,5-bisphosphate to generate the second messengers diacylglycerol and inositol 1,4,5-trisphosphate (IP3). Diacylglycerol and IP3 mediate a variety of cellular responses to extracellular stimuli by inducing protein kinase C and increasing cytosolic Ca(2+) concentrations. This enzyme localizes to the plasma membrane and requires calcium for activation. Its activity is inhibited by spermine, sphingosine, and several phospholipids. [provided by RefSeq, Jul 2008]

PLCD3 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.30611575).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLCD3	NM_133373.5	c.2318C>T	p.Ala773Val	missense_variant	15/15	ENST00000619929.5	NP_588614.1
PLCD3	XM_024450554.2	c.2453C>T	p.Ala818Val	missense_variant	15/15		XP_024306322.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLCD3	ENST00000619929.5	c.2318C>T	p.Ala773Val	missense_variant	15/15	1	NM_133373.5	ENSP00000479636.1
PLCD3	ENST00000539433.1	c.281C>T	p.Ala94Val	missense_variant	3/3	3		ENSP00000443079.1
PLCD3	ENST00000543623.5	n.625C>T		non_coding_transcript_exon_variant	6/6	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000119 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 03, 2023

The c.2318C>T (p.A773V) alteration is located in exon 15 (coding exon 15) of the PLCD3 gene. This alteration results from a C to T substitution at nucleotide position 2318, causing the alanine (A) at amino acid position 773 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.095	T
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.41	T
PrimateAI	Benign	0.33	T
Sift4G	Benign	0.29	T
Polyphen		0.97	D
Vest4		0.20
MVP		0.70
ClinPred		0.93	D
GERP RS		4.8
Varity_R		0.23
gMVP		0.17

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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: rs375345131; hg19: chr17-43190036;