rs200854927

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_001184880.2(PCDH19):​c.3235C>T​(p.Pro1079Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000165 in 1,209,209 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1079T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 0 hem., cov: 22)
Exomes 𝑓: 9.1e-7 ( 0 hom. 0 hem. )

Consequence

PCDH19
NM_001184880.2 missense

Scores

1
2
14

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.37

Publications

2 publications found
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 Gene-Disease associations (from GenCC):
  • developmental and epileptic encephalopathy, 9
    Inheritance: XL, Unknown Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • X-linked complex neurodevelopmental disorder
    Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
  • Dravet syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 107 curated pathogenic missense variants (we use a threshold of 10). The gene has 20 curated benign missense variants. Gene score misZ: 2.5929 (below the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to Dravet syndrome, developmental and epileptic encephalopathy, 9, X-linked complex neurodevelopmental disorder.
BP4
Computational evidence support a benign effect (MetaRNN=0.18000379).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PCDH19NM_001184880.2 linkc.3235C>T p.Pro1079Ser missense_variant Exon 6 of 6 ENST00000373034.8 NP_001171809.1 Q8TAB3-1
PCDH19NM_001105243.2 linkc.3094C>T p.Pro1032Ser missense_variant Exon 5 of 5 NP_001098713.1 Q8TAB3-2B3KU71
PCDH19NM_020766.3 linkc.3091C>T p.Pro1031Ser missense_variant Exon 5 of 5 NP_065817.2 Q8TAB3-3B3KU71

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PCDH19ENST00000373034.8 linkc.3235C>T p.Pro1079Ser missense_variant Exon 6 of 6 1 NM_001184880.2 ENSP00000362125.4 Q8TAB3-1
PCDH19ENST00000255531.8 linkc.3094C>T p.Pro1032Ser missense_variant Exon 5 of 5 1 ENSP00000255531.7 Q8TAB3-2
PCDH19ENST00000420881.6 linkc.3091C>T p.Pro1031Ser missense_variant Exon 5 of 5 1 ENSP00000400327.2 Q8TAB3-3
PCDH19ENST00000464981.1 linkn.-189C>T upstream_gene_variant 3 ENSP00000479805.1 A0A1Y8EN23

Frequencies

GnomAD3 genomes
AF:
0.00000899
AC:
1
AN:
111187
Hom.:
0
Cov.:
22
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.0000189
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
9.11e-7
AC:
1
AN:
1098022
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
363378
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
26394
American (AMR)
AF:
0.00
AC:
0
AN:
35207
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19386
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30203
South Asian (SAS)
AF:
0.00
AC:
0
AN:
54141
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40520
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4134
European-Non Finnish (NFE)
AF:
0.00000119
AC:
1
AN:
841947
Other (OTH)
AF:
0.00
AC:
0
AN:
46090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
AF:
0.00000899
AC:
1
AN:
111187
Hom.:
0
Cov.:
22
AF XY:
0.00
AC XY:
0
AN XY:
33365
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
30493
American (AMR)
AF:
0.00
AC:
0
AN:
10519
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2645
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3537
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2561
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5972
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
238
European-Non Finnish (NFE)
AF:
0.0000189
AC:
1
AN:
53040
Other (OTH)
AF:
0.00
AC:
0
AN:
1499
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.36
T
BayesDel_noAF
Benign
-0.75
CADD
Benign
19
DANN
Benign
0.96
DEOGEN2
Benign
0.088
.;T;.
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Benign
0.78
T;T;T
M_CAP
Pathogenic
0.38
D
MetaRNN
Benign
0.18
T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
0.0
.;N;.
PhyloP100
3.4
PrimateAI
Uncertain
0.50
T
PROVEAN
Benign
-1.3
N;N;N
REVEL
Benign
0.053
Sift
Benign
0.046
D;D;D
Sift4G
Benign
0.13
T;T;T
Polyphen
0.0090, 0.0040
.;B;B
Vest4
0.11
MutPred
0.27
.;Gain of sheet (P = 0.0028);.;
MVP
0.46
MPC
0.51
ClinPred
0.51
D
GERP RS
4.9
Varity_R
0.11
gMVP
0.37
Mutation Taster
=93/7
polymorphism

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

Other links and lift over

dbSNP: rs200854927; hg19: chrX-99551487; API