rs45466294

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_015192.4(PLCB1):c.1167+7T>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000854 in 1,613,712 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.0045 ( 7 hom., cov: 32)

Exomes 𝑓: 0.00047 ( 7 hom. )

Consequence

PLCB1
NM_015192.4 splice_region, intron

Scores

Splicing: ADA: 0.0002293

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.0720

Publications

1 publications found

Variant links:

Genes affected

PLCB1 (HGNC:15917): (phospholipase C beta 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 many extracellular signals. This gene is activated by two G-protein alpha subunits, alpha-q and alpha-11. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

PLCB1 Gene-Disease associations (from GenCC):

genetic developmental and epileptic encephalopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
developmental and epileptic encephalopathy, 12
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
infantile spasms
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
malignant migrating partial seizures of infancy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PLCB1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.81).

BP6

Variant 20-8697790-T-C is Benign according to our data. Variant chr20-8697790-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 129900.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00455 (692/152208) while in subpopulation AFR AF = 0.0155 (642/41528). AF 95% confidence interval is 0.0145. There are 7 homozygotes in GnomAd4. There are 338 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 7 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015192.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLCB1	NM_015192.4	MANE Select	c.1167+7T>C		splice_region intron	N/A	NP_056007.1
	PLCB1	NM_182734.3		c.1167+7T>C		splice_region intron	N/A	NP_877398.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
PLCB1	ENST00000338037.11	TSL:1 MANE Select	c.1167+7T>C	splice_region intron	N/A	ENSP00000338185.6
PLCB1	ENST00000378637.6	TSL:1	c.1167+7T>C	splice_region intron	N/A	ENSP00000367904.2
PLCB1	ENST00000378641.7	TSL:1	c.1167+7T>C	splice_region intron	N/A	ENSP00000367908.3

Frequencies

GnomAD3 genomes

AF:

0.00446

AC:

679

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0152

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00210

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00384

GnomAD2 exomes

AF:

0.00120

AC:

300

AN:

250928

AF XY:

0.000914

show subpopulations

Gnomad AFR exome

AF:

0.0159

Gnomad AMR exome

AF:

0.000723

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000971

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.000469

AC:

686

AN:

1461504

Hom.:

Cov.:

AF XY:

0.000397

AC XY:

289

AN XY:

727070

show subpopulations

African (AFR)

AF:

0.0149

AC:

498

AN:

33470

American (AMR)

AF:

0.00114

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.0000696

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.000694

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000216

AC:

AN:

1111720

Other (OTH)

AF:

0.00171

AC:

103

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

101

135

169

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00455

AC:

692

AN:

152208

Hom.:

Cov.:

AF XY:

0.00454

AC XY:

338

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.0155

AC:

642

AN:

41528

American (AMR)

AF:

0.00209

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.000622

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68004

Other (OTH)

AF:

0.00380

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

101

135

169

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00339

Hom.:

Bravo

AF:

0.00510

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Developmental and epileptic encephalopathy, 12 (2)

not provided (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.81

CADD

Benign

3.7

(source)

DANN

Benign

0.56

PhyloP100

-0.072

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00023

dbscSNV1_RF

Benign

0.018

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over