rs780704524

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2

The NM_001184880.2(PCDH19):c.2024T>G(p.Val675Gly) variant causes a missense change. The variant allele was found at a frequency of 0.0000298 in 1,208,654 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V675M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000032 ( 0 hom. 7 hem. )

Consequence

PCDH19
NM_001184880.2 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 5.91

Variant links:

Genes affected

PCDH19 (HGNC:14270): (protocadherin 19) The protein encoded by this gene is a member of the delta-2 protocadherin subclass of the cadherin superfamily. The encoded protein is thought to be a calcium-dependent cell-adhesion protein that is primarily expressed in the brain. Mutations in this gene on human chromosome X are associated with sporadic infantile epileptic encephalopathy and to a female-restricted form of epilepsy (EFMR; also known as PCDH19RE). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]

PCDH19 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -18 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07801905).

BP6

Variant X-100406574-A-C is Benign according to our data. Variant chrX-100406574-A-C is described in ClinVar as [Likely_benign]. Clinvar id is 206301.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.0000319 (35/1096832) while in subpopulation AMR AF= 0.000967 (34/35176). AF 95% confidence interval is 0.00071. There are 0 homozygotes in gnomad4_exome. There are 7 alleles in male gnomad4_exome subpopulation. Median coverage is 30. This position pass quality control queck.

BS2

High Hemizygotes in GnomAdExome at 6 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PCDH19	NM_001184880.2 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/6	ENST00000373034.8
PCDH19	NM_001105243.2 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/5
PCDH19	NM_020766.3 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCDH19	ENST00000373034.8 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/6	1	NM_001184880.2	A1	Q8TAB3-1
PCDH19	ENST00000255531.8 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/5	1		P5	Q8TAB3-2
PCDH19	ENST00000420881.6 linkuse as main transcript	c.2024T>G	p.Val675Gly	missense_variant	1/5	1		A1	Q8TAB3-3

Frequencies

GnomAD3 genomes

AF:

0.00000894

AC:

AN:

111822

Hom.:

Cov.:

AF XY:

0.0000294

AC XY:

AN XY:

33980

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000947

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

GnomAD3 exomes

AF:

0.000194

AC:

AN:

180134

Hom.:

AF XY:

0.0000908

AC XY:

AN XY:

66092

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00128

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000319

AC:

AN:

1096832

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

362212

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000967

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.00000894

AC:

AN:

111822

Hom.:

Cov.:

AF XY:

0.0000294

AC XY:

AN XY:

33980

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000947

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000102

ExAC

AF:

0.000157

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2017

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

PCDH19-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 09, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Apr 09, 2021

- -

Developmental and epileptic encephalopathy, 9

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Dec 08, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.10

Cadd

Uncertain

Dann

Uncertain

0.99

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.078

T;T;T

MetaSVM

Benign

-0.78

MutationAssessor

Benign

1.2

L;L;L

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.8

N;N;N

REVEL

Benign

0.23

Sift

Uncertain

0.0020

D;D;D

Sift4G

Benign

0.089

T;T;T

Polyphen

0.45, 0.99

.;B;D

Vest4

0.65

MutPred

0.50

Gain of disorder (P = 0.0089);Gain of disorder (P = 0.0089);Gain of disorder (P = 0.0089);

MVP

0.70

MPC

0.84

ClinPred

0.16

GERP RS

5.8

Varity_R

0.64

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

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