Project

General

Profile

Wiki » History » Revision 60

Revision 59 (Jason Bobe, 03/04/2010 02:39 PM) → Revision 60/88 (Jason Bobe, 03/04/2010 03:14 PM)

 = Genotype + Environment = Trait Evidence (GET-E) Database =  

 The '''GET-E''' project was started by Abraham Rosenbaum, Joe Thakuria, Xiaodi Wu and Alexander Wait Zaranek to help the [http://personalgenomes.org Personal Genome Project], the clinical genetics community, and, the general public interpret individual genomes.    The database is closely integrated with [wiki:Trait-o-matic]. 

 You can find the PGP production server at: 
  * http://evidence.personalgenomes.org 

 A development sandbox can be found at:  
  * http://evidence-dev.personalgenomes.org 

 Many contributors helped make '''GET-E''' possible. You can find specific contributions at:  
  * http://evidence.personalgenomes.org/editors 

 Please help the project by editing the database, writing software tools that use the database (eg. Trait-o-matic/AETAS) or by making suggestions on the wiki!   

  == Field Descriptions and Editing Guidelines == 
  === Short Summary ===  
  * free text providing a one line summary of clinical action to be undertaken given this variant (possibly modified by known phenotypes).  

  === Variant Quality Data ===  
 Each of these fields is a sliding scale of 0-5 where 0 represents no evidence and 5 strong evidence that the Impact is correct. Where the data is not entered the default is N/A. When Genetests and/or the literature correlate this variant with a number of phenotypes the impact should be reported for the most extreme condition 
  a. Computational: One star for each consistent prediction and one star subtracted for conflicting results from: 
   i. evolutionary conservation (minimum of three species) 
   i. presence in active domain  
   i. SIFT  
   i. !PolyPhen  
   i. NBLOSUM >= 2 
   i. GVGD 
   i. Other variants in this gene cause similar disease  
   i. etc...  
  a. Functional: One star for each experiment supporting the result, and penalize one star for conflicting results from:  
   i. enzyme extracts  
   i. cell lines   
   i. animal models 
   i. etc...  
  a. Case/Control: A combination of odds ratio and significance test (currently using Fisher's Exact Test). For protective alleles, use inverse OR = 1 / OR. Do not count related individuals, count probands -- ie. one per family 
   i. 0 stars if no higher ranking is allowed 
   i. 1 star if OR>1 and significance <= 0.1 
   i. 2 stars if OR>=1.5 and significance <= 0.05 
   i. 3 stars if OR>=2 and significance <= 0.025 
   i. 4 stars if OR>=3 and significance <= 0.01 
   i. 5 stars if OR>=5 and significance <= 0.0001 
  a. Familial Disease Segregation 
   i. 0 stars for no segregation (LOD < -2) 
   i. 1 star if segregation exists in one family pedigree 
   i. 2 stars for segregation in more than one family with some conflicting information (e.g. asymptomatic carrier of young age or possibility of second causative mutation) 
   i. 3 stars for more than one family no conflicting information 
   i. 4 stars for LOD > 2 
   i. 5 stars for LOD > 3 
  a. Disease severity: downgraded according to disease penetrance (eg. Crohn's disease would be moderate or severe, but "increased susceptibility" is only increased the chances by ~.15% and so is called mild)  
   i. 0 stars for benign 
   i. 1 star for very low expectation of having symptoms for this genotype, very low penetrance mild effect (eg. Susceptibility increased susceptibility to crohn's with OR = 4.5, causing a ~.2% risk of Crohn's) Crohn's disease) 
   i. 2 stars for mild effect on quality of life or unlikely to be symptomatic (Cystinuria) (eg. Alpha-1-antitrypsin deficiency) 
   i. 3 stars for moderate effect on quality of life (eg. Familial mediterranean fever) Cystineria) 
   i. 4 stars for severe effect: causes serious disability or reduces life expectancy potentially lethal (eg. Sickle-cell, Stargardt's disease) sickle-cell) 
   i. 5 stars for very severe effect: early lethal or severe damage (eg. Familial adenomatous polypopsis, adrenoleukodystrophy) Bardet-Biedl, PKU) 
  a. Treatability: 
   i. 0 stars for no clinical evidence supporting intervention (eg. PAF acetylhydrolase deficiency) 
   i. 1 star for uncurable: treatment only to alleviate symptoms (eg. adrenoleukodystrophy) 
   i. 2 stars for potentially treatable: Treatment is in development or controversial 
   i. 3 stars for treatable but a significant fraction do not require treatment (Cystinuria) 
   i. 4 stars for treatable: Standard treatment reduces the amount of mortality/morbidity but does not eliminate it (eg. Sickle-cell disease) 
   i. 5 stars for extremely treatable: Well-established treatment essentially eliminates the effect of the disease (eg. PKU) 

  === Impact ===  
  a. Pathogenic: Causative for disease.  
  a. Benign: No clinically significant phenotype.  
  a. Protective: Protective from disease. 
  a. Pharmacogenetic: Clinically significant phenotype in the presence of a pharmacological agent.     
  a. NR: Not reviewed. 

 In addition to these impacts, qualifiers will be added according to the variant quality information (ie. the stars).  

 For pathogenic, pharmacogenetic, and protective variants: 
  a. (no qualifier given): at least 4 stars in one of the human evidence categories (case/control or familial), at least 4 stars in one of the clinical categories (severity or treatability), and at least 14 stars total. 
  a. "likely": at least 3 stars in one of the human evidence categories, at least 3 stars in one of the clinical categories, and at least 10 stars total. 
  a. "uncertain": all the rest. 

 For benign: 
  a. (no qualifier given): at least 4 stars in one of the human evidence categories, and at least 10 stars total. 
  a. "likely": at least 3 stars in one of the human evidence categories, and at least 6 stars total. 
  a. "uncertain": all the rest. 

 When Genetests and/or the literature give multiple phenotypes for a variant, the impact should be reported for the most extreme condition and annotated as such in the ''short summary''. In the future we hope to list different phenotypes separately. 

  === Inheritance Pattern ===  
  a. Dominant 
  a. Recessive 
  a. Other: A defined form of inheritance that is neither dominant or recessive (e.g. modifier, co-dominant, incomplete penetrance). These variants will get prioritized due to their potential phenotypic affect should the additional factors be present. 
  a. Undefined: Undefined in the literature. 
  a. Unknown: The default value for all variants and all variants without literature. 

  === Summary of published research, and additional commentary ===  
  * Free text providing a comprehensive review of the variant including youngest age of onset, oldest age of onset and oldest asymptomatic individual.  

  === Allele Frequency ===  
  * Automatically generated frequencies for the !HapMap Project, 1000 Genomes Project and the weighted average of the two.    Sub-population frequencies and homozygous/heterozygous break-downs are currently not shown.  

  === Publications ===  

  * User-entered publications and user entered synopses of the relevant details from the publication. A short summary is also entered for each paper (as above). 
 
  === Genomes ===   

  * Automatically generated list of all genomes from Trait-o-matic in which this variant is seen. Additionally, specific actions taken by each individual harboring the variant can be reported. 
 
  === Other External References ===  
 These are automatically generated by web "robots":   
    a. dbSNP: The link to the dbSNP entry for this nucleotide position (for this nucleotide change?) 
    a. Genetests: Link to all clinical laboratories performing diagnostic tests on this gene and the list of diseases that the labs are looking for. 
    a. Web Search Results: A web search for this exact variant using the Yahoo search engine 

  === Edit History === 
  * Automatically generated history of all page edits with the contributor's name. 

  == To Do == 
  * [wiki:GET-Evidence/23andWe] 

  == Suggestions ==  

  * your suggestion here.