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Intellectual disability

Gene: PCDH19

Green List (high evidence)

PCDH19 (protocadherin 19)
EnsemblGeneIds (GRCh38): ENSG00000165194
EnsemblGeneIds (GRCh37): ENSG00000165194
OMIM: 300460, Gene2Phenotype
PCDH19 is in 4 panels

5 reviews

Louise Daugherty (Genomics England Curator)

added tags somatic mosaicism. Pathogenic variants in the PCDH19 gene are associated with epilepsy, intellectual disability (ID) and behavioural disturbances. Only heterozygous females and mosaic males are affected, likely due to a disease mechanism named cellular interference.
Created: 1 Dec 2017, 11:56 a.m.
Comment on publications: added recent papers PMID 28669061, 28462982
Created: 1 Dec 2017, 11:53 a.m.
Comment on publications: added publications suggested by reviewers
Created: 1 Dec 2017, 11:49 a.m.

Caroline Wright (Sanger)

Green List (high evidence)

Mode of inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

Phenotypes
EPILEPTIC ENCEPHALOPATHY EARLY INFANTILE TYPE 9 (EIEE9)

Publications

BRIDGE consortium (NIHRBR-RD)

Green List (high evidence)

This is a pertinent gene from the NIHR BioResource - Rare Diseases Study (NIHRBR-RD) BRIDGE Study : SPEED (Specialist Pathology: Evaluating Exomes in Diagnostics) which covers epilepsies, movement and microcephaly disorders, this gene is on the SPEED_NEURO_20170705 gene list. Evidences used for SPEED NEURO gene list: in_ddg2p_20141118_conf;in_ddg2p_20141118_conf;in_ddg2p_201507;in_ddg2p_201507_conf;in_ddg2p_2_4_2017;in_ddg2p_2_4_2017_conf;in_gilissen_2014_known;in_omim_20150205_epilepsies;in_UKGTN_v12 . Main mutation mechanism : Loss of function
Created: 27 Jul 2017, 7:57 p.m.
Evidences key, gene present in following gene lists and main mutation mechanism : ddg2p_20141118; ddg2p_20141118_conf; ddg2p_201507; ddg2p_201507_conf; find_uk10k; gilissen_2014_known; omim_20150205_epilepsies; sfari_20150206; UKGTN_v12; Nijmegen_ID_diagnostic; Nijmegen_ID_candidates; GEL_ID_green_20160217; neuro_20160418_strict; Loss of function. This is a pertinent gene from the BRIDGE Study : SPEED (Specialist Pathology: Evaluating Exomes in Diagnostics) which covers epilepsies, movement and microcephaly disorders, this gene comes from the SPEED_NEURO_v3.0_20170404 gene list. The following experts from the BRIDGE consortium NIHRBR-RD contributed to this panel: - Professor F. Lucy Raymond, Cambridge Institute for Medical Research, University of Cambridge - Manju Kurian, Paediatric neurologist, Great Ormond Street Hosptial - Keren Carss, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Alba Sanchis-Juan, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Marie Erwood NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Louise Daugherty, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust
Created: 19 Jul 2017, 1:02 p.m.

Mode of inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

Publications

Ellen McDonagh (Genomics England Curator)

Added tag to indicate x-linked over-dominance.
Created: 5 Apr 2017, 6:26 a.m.

Lu Raymond (university of cambridge )

Green List (high evidence)

Details

Mode of Inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Sources
  • Victorian Clinical Genetics Services
  • Expert Review Green
  • Radboud University Medical Center, Nijmegen
  • Emory Genetics Laboratory
Phenotypes
  • Epileptic encephalopathy, early infantile, 9, 300088
  • EPILEPTIC ENCEPHALOPATHY EARLY INFANTILE TYPE 9 (EIEE9)
Tags
mosaicism x-linked-over-dominance somatic
OMIM
300460
Clinvar variants
Variants in PCDH19
Penetrance
Complete
Publications
Panels with this gene

History Filter Activity

29 Sep 2018, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source Victorian Clinical Genetics Services was added to PCDH19.

12 Mar 2018, Gel status: 3

Panel promoted to version 2.0

Ellen McDonagh (Genomics England Curator)

12.03.2018: Due to major updates completed (Phase 1, 2 and 3), this panel was promoted to Version 2 in order to reflect the major updates since November 2017 which have resulted in reviews for 836 genes added by Genomics England Curators and the Clinical Team, 130 new Green genes added to the interpretation pipeline (from 751 to 881 Green genes), and the gene total has increased from 1879 to 1927.

1 Dec 2017, Gel status: 3

Set publications

Louise Daugherty (Genomics England Curator)

Publications for PCDH19 were set to 18469813; 5116697; 19752159; 19214208; 25529582; 24896178, 28669061; 28462982

1 Dec 2017, Gel status: 3

Set publications

Louise Daugherty (Genomics England Curator)

Publications for PCDH19 were set to 18469813; 5116697; 19752159; 19214208; 25529582; 24896178

13 Nov 2015, Gel status: 4

gel status update

GEL ()

The Gel status was updated for this whole panel

13 Nov 2015, Gel status: 4

gel status update

GEL ()

The Gel status was updated for this whole panel

13 Nov 2015, Gel status: 2

Added New Source

Ellen McDonagh (Genomics England Curator)

PCDH19 was added to Intellectual disabilitypanel. Source: Expert Review Green

24 Jun 2015, Gel status: 2

Set Mode of Inheritance

Ellen McDonagh (Genomics England Curator)

Model of inheritance for gene PCDH19 was changed to X-LINKED: hemizygous mutation in males, may be caused by monoallelic mutations in females

24 Jun 2015, Gel status: 2

Added New Source

Ellen McDonagh (Genomics England Curator)

PCDH19 was added to Intellectual disabilitypanel. Sources: Emory Genetics Laboratory,Radboud University Medical Center, Nijmegen

24 Jun 2015, Gel status: 1

Added New Source

Ellen McDonagh (Genomics England Curator)

PCDH19 was added to Intellectual disabilitypanel. Sources: Emory Genetics Laboratory,Radboud University Medical Center, Nijmegen