chr12-18699796-C-T

Position:

chr12-18699796-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_033123.4(PLCZ1):c.1172G>A(p.Arg391Gln) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,612,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

PLCZ1
NM_033123.4 missense, splice_region

Scores

Splicing: ADA: 0.000009889

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.47

Variant links:

Genes affected

PLCZ1 (HGNC:19218): (phospholipase C zeta 1) The protein encoded by this gene is a member of the phosphoinositide-specific phospholipase C family. Members in this family, classified into six isotypes that are tissue- and organ-specific, hydrolyze phosphatidylinositol 4,5-bisphosphate just before the phosphate group to yield diacylglycerol and inositol 1,4,5-trisphosphate. This protein localizes to the acrosome in spermatozoa and elicits Ca(2+) oscillations and egg activation during fertilization that leads to early embryonic development. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

PLCZ1 links:

PIK3C2G (HGNC:8973): (phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 gamma) The protein encoded by this gene belongs to the phosphoinositide 3-kinase (PI3K) family. PI3-kinases play roles in signaling pathways involved in cell proliferation, oncogenic transformation, cell survival, cell migration, and intracellular protein trafficking. This protein contains a lipid kinase catalytic domain as well as a C-terminal C2 domain, a characteristic of class II PI3-kinases. C2 domains act as calcium-dependent phospholipid binding motifs that mediate translocation of proteins to membranes, and may also mediate protein-protein interactions. This gene may play a role in several diseases, including type II diabetes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

PIK3C2G links:

PLCZ1 (HGNC:):

PLCZ1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05713001).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLCZ1	NM_033123.4 linkuse as main transcript	c.1172G>A	p.Arg391Gln	missense_variant, splice_region_variant	10/15	ENST00000266505.12	NP_149114.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
PLCZ1	ENST00000266505.12 linkuse as main transcript	c.1172G>A	p.Arg391Gln	missense_variant, splice_region_variant	10/15	1	NM_033123.4	ENSP00000266505.7	Q86YW0-1
PLCZ1	ENST00000648272.1 linkuse as main transcript	c.1295G>A	p.Arg432Gln	missense_variant, splice_region_variant	9/14			ENSP00000497636.1	A0A3B3ISW9
PLCZ1	ENST00000539875.5 linkuse as main transcript	c.593G>A	p.Arg198Gln	missense_variant, splice_region_variant	6/11	1		ENSP00000445026.1	Q86YW0-2
PLCZ1	ENST00000318197.10 linkuse as main transcript	n.*1037G>A		splice_region_variant, non_coding_transcript_exon_variant	10/15	1		ENSP00000326397.6	F5H474
PLCZ1	ENST00000318197.10 linkuse as main transcript	n.*1037G>A		3_prime_UTR_variant	10/15	1		ENSP00000326397.6	F5H474

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152038

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250716

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135738

show subpopulations

Gnomad AFR exome

AF:

0.0000629

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1460840

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

726802

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000758

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152038

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74266

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 16, 2021

The c.1172G>A (p.R391Q) alteration is located in exon 10 (coding exon 9) of the PLCZ1 gene. This alteration results from a G to A substitution at nucleotide position 1172, causing the arginine (R) at amino acid position 391 to be replaced by a glutamine (Q). 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

0.091

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.52

CADD

Benign

1.8

DANN

Benign

0.93

DEOGEN2

Benign

0.061

.;.;T;.;.

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.015

LIST_S2

Benign

0.73

T;T;T;T;T

M_CAP

Benign

0.020

MetaRNN

Benign

0.057

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.12

.;.;N;.;.

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.51

.;N;N;N;N

REVEL

Benign

0.13

Sift

Benign

0.29

.;T;T;T;T

Sift4G

Benign

0.31

.;T;T;T;.

Polyphen

0.15, 0.078

.;B;B;.;.

Vest4

0.33, 0.27, 0.30

MutPred

0.54

.;.;Gain of catalytic residue at E394 (P = 0.0184);.;.;

MVP

0.17

MPC

0.019

ClinPred

0.029

GERP RS

-12

Varity_R

0.035

gMVP

0.13

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0000099

dbscSNV1_RF

Benign

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over