Asia-Pacific Extra-Corporeal Life Support Organisation (AP ELSO)
AP ELSO GenOMICC Team
- John Fraser (AP ELSO Chair, University of Queensland)
- Jacky Suen (University of Queensland)
- Kenneth Baillie (Roslin Insitute, University of Edinburgh)
GenOMICC (Genetics of Mortality in Critical Care) is a community-led, open-source research study that aims to discover genetic associations with susceptibility to, and outcome from, critical illness. The ultimate aim is to find new therapeutic targets to promote survival.1 To maximise the genetic effect sizes we see, and minimise the effect of random noise caused by comorbid illness, GenOMICC is restricted to people who were in good health (i.e. free from functionally-limiting comorbid illness, and age <= 70y) before developing the presenting acute problem.
In AP ELSO ECMO centres, we propose to recruit all previously-well patients who require veno-venous ECMO for respiratory failure of any aetiology. This corresponds to group 3 in the GenOMICC protocol entry criteria.
We anticipate that the case mix of patients requiring ECMO includes a large proportion of disease processes for which there is evidence of genetic predisposition, including ARDS,2 influenza,3 and other infections.4 Therefore we will recruit any previously-well patient requiring ECMO, and stratify the analysis by disease process. Cases will be compared with population controls, which can be obtained from existing studies in many populations.
In order to change a patient’s outcome, we need to alter the biological processes that are active after presentation to healthcare. Hence the genetic effects of the greatest interest are those that alter the probablity of mortality from critical illness. These are inevitably smaller genetic effects;6 detecting these will require large numbers of patients, and optimal use of existing data.7
Recruitment to GenOMICC requires:
- a single DNA sample (EDTA blood, sent by post at ambient temperature to a central lab within 7 days)
- clinical data (recorded in a secure RedCap database)
Case report form
A minimal case report form should be completed using an secure online interface (RedCap) to enter data about each patient into the study database. This will record only essential information relating to the study, including:
- confirmation that inclusion criteria were met
- confirmation that exclusion criteria did not apply
- details of presentation
- microbiology results
- key dates (date that criteria were first met in this illness, date of death)
- outcome at 60 days
At regular intervals an external quality check of data entered into the study should be performed.
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