rs1555985491
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2
The NM_001184880.2(PCDH19):c.691T>G(p.Ser231Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 24)
Consequence
PCDH19
NM_001184880.2 missense
NM_001184880.2 missense
Scores
1
6
9
Clinical Significance
Conservation
PhyloP100: 9.32
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM1
?
In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_001184880.2
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PCDH19 | NM_001184880.2 | c.691T>G | p.Ser231Ala | missense_variant | 1/6 | ENST00000373034.8 | |
PCDH19 | NM_001105243.2 | c.691T>G | p.Ser231Ala | missense_variant | 1/5 | ||
PCDH19 | NM_020766.3 | c.691T>G | p.Ser231Ala | missense_variant | 1/5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PCDH19 | ENST00000373034.8 | c.691T>G | p.Ser231Ala | missense_variant | 1/6 | 1 | NM_001184880.2 | A1 | |
PCDH19 | ENST00000255531.8 | c.691T>G | p.Ser231Ala | missense_variant | 1/5 | 1 | P5 | ||
PCDH19 | ENST00000420881.6 | c.691T>G | p.Ser231Ala | missense_variant | 1/5 | 1 | A1 |
Frequencies
GnomAD3 genomes ? Cov.: 24
GnomAD3 genomes
?
Cov.:
24
GnomAD4 exome Cov.: 33
GnomAD4 exome
Cov.:
33
GnomAD4 genome ? Cov.: 24
GnomAD4 genome
?
Cov.:
24
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Developmental and epileptic encephalopathy, 9 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 31, 2017 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with PCDH19-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces serine with alanine at codon 231 of the PCDH19 protein (p.Ser231Ala). The serine residue is highly conserved and there is a moderate physicochemical difference between serine and alanine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Benign
T;T;T
M_CAP
Uncertain
D
MetaRNN
Uncertain
T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;N;N
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N
REVEL
Uncertain
Sift
Benign
T;T;T
Sift4G
Uncertain
D;D;D
Polyphen
0.98, 1.0
.;D;D
Vest4
MutPred
Loss of disorder (P = 0.0452);Loss of disorder (P = 0.0452);Loss of disorder (P = 0.0452);
MVP
MPC
2.2
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at