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HPS2-THRIVE Legacy Study Protocol

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HPS2-THRIVE Legacy Study Protocol Study Title: HPS2-THRIVE trials legacy study: long-term follow-up of participants using electronic health records Short title: HPS2-THRIVE Trial Legacy Study Ethics Ref: 19/WS/0116 IRAS number: 268340 Date and Version No: 15th May 2019 v1.0 Chief Investigator: Professor Jane Armitage, Professor of Clinical Trials and Epidemiology, Nuffield Department of Population Health, University of Oxford Richard Doll Building, Old Road Campus, Oxford OX3 7LF Tel: +44 (0) 1865 857240. Email: [email protected] Investigators: Dr Will Whiteley, Centre for Clinical Brain Sciences, University of Edinburgh and Clinical Trial Service Unit, NDPH, University of Oxford Professor Sarah Parish, MRC Population Health Research Unit and Clinical Trial Service Unit, Nuffield Department of Population Health, University of Oxford, University of Oxford Professor Louise Bowman, Nuffield Department of Population Health, University of Oxford, University of Oxford Associate Professor Richard Haynes, Nuffield Department of Population Health, University of Oxford, University of Oxford Sponsor: University of Oxford Funder: Population Health Research Unit, University of Oxford funding confirmed. Chief Scientist’s Office to W. Whiteley Chief Investigator Signature: Page 1 of 20 HPS2-THRIVE Legacy Protocol v1.0 TABLE OF CONTENTS 1. SYNOPSIS ................................................................................................................................ 3 2. ABBREVIATIONS ..................................................................................................................... 4 3. BACKGROUND AND RATIONALE ............................................................................................ 5 3.1. HPS2-THRIVE .................................................................................................................... 5 3.2. Cholesterol levels and dementia ..................................................................................... 5 3.3. Vascular risk and dementia ............................................................................................. 6 3.4. Legacy effects of LDL-cholesterol lowering ..................................................................... 6 3.5. Genetic and biomarker analysis of the HPS2-THRIVE cohort ......................................... 7 4. STUDY DESIGN ........................................................................................................................ 7 4.1. Extended follow up of a randomised controlled trial using electronic health records and within trial data ..................................................................................................................... 7 5. STUDY OBJECTIVES ................................................................................................................. 8 6. STUDY POPULATION............................................................................................................... 8 7. INTERVENTION ....................................................................................................................... 8 8. OUTCOME ASCERTAINMENT ................................................................................................. 8 9. DISSENT .................................................................................................................................. 9 10. GENETIC AND PROTEIN BIOMARKER ANALYSES .................................................................. 10 10.1. Methods ........................................................................................................................ 10 11. STATISTICAL ANALYSES ........................................................................................................ 11 12. DATA MANAGEMENT ........................................................................................................... 11 12.1. Access to Data ............................................................................................................... 11 12.2. Data Recording and Record Keeping (see appendix b for data flow) ........................... 11 13. ETHICAL AND REGULATORY CONSIDERATIONS ................................................................... 12 14. FUNDING .............................................................................................................................. 12 15. PUBLICATION POLICY ........................................................................................................... 12 16. REFERENCES ......................................................................................................................... 13 17. Appendix A: Comments from 6 PPI panels .......................................................................... 15 17.1. Study participant feedback ........................................................................................... 15 17.2. NIHR, CTSU and UCL groups .......................................................................................... 15 17.3. ASCOT trial participants ................................................................................................. 16 Page 2 of 20 HPS2-THRIVE Legacy Protocol v1.0 17.4. OCDEM PPI Group ......................................................................................................... 17 18. Appendix B: Data flow diagram ........................................................................................... 20 1. SYNOPSIS Study Title HPS2-THRIVE trial legacy study: long-term follow-up of participants with electronic health records Internal ref. no. / short HPS2-THRIVE Trial Legacy Study title Study Design Extended follow up of randomised controlled trials using electronic health records and other routinely collected data. Study Participants UK participants in HPS2-THRIVE trial Planned Sample Size HPS2-THRIVE UK = 8,035 Planned period of Planned analyses based on at least 20 years’ follow-up from trial research initiation (2007) with continued data linkage to allow for future analyses. Objectives Outcome Measures 1 To determine whether Dementia measured in trial participants randomly allocated records, hospital episode, death to treatments leading to lower and other health records up to levels of LDL cholesterol during data linkage date the scheduled treatment period have a lower risk of dementia 2 To determine whether Vascular diseases measured in participants randomly allocated trial records, hospital episode, to treatments leading to lower death and other health records levels of LDL cholesterol during up to data linkage date the scheduled treatment period have a lower long-term risk of major vascular and other diseases 3 To measure the association Dementia measured in trial between baseline and in-trial records, hospital episode, death vascular risk measures with and other health records up to future dementia data linkage date 4 To measure the association Vascular diseases, dementia, between baseline genetic and neurological disease and other blood biomarkers and the outcomes occurrence of later disease Page 3 of 20 HPS2-THRIVE Legacy Protocol v1.0 2. ABBREVIATIONS AHA American Heart Association ASCEND A Study of Cardiovascular Events iN Diabetes ASCOT The Anglo-Scandinavian Cardiovascular Outcomes Trial BHF British Heart Foundation CRUK Cancer Research UK CTSU Clinical Trial Service Unit EHR Electronic health record ELISA Enzyme-Linked Immunosorbent Assay FDA US Food and Drug Administration HBS HSC Honest Broker Service (HBS) for Health and Social Care (HSC) HES Hospital Episode Statistics HDL High-density lipoprotein HR Hazard ratio HPS2 Heart Protection Study 2 HRA Health Research Authority ICF Informed Consent Form ISD Information Services Division Scotland K-M Kaplan Meier MI myocardial infarction MRC Medical Research Council NDPH Nuffield Department of Population Health, University of Oxford NIH National Institutes of Health ONS Office for National Statistics PPI Patient and Public Involvement PPV Positive Predictive Value R&D NHS Trust Research & Development Department REC Research Ethics Committee RR Risk ratio SEARCH Study of the Effectiveness of Additional Reduction in Cholesterol and Homocysteine UKPDS United Kingdom Prospective Diabetes Study Page 4 of 20 HPS2-THRIVE Legacy Protocol v1.0 3. BACKGROUND AND RATIONALE 3.1. HPS2-THRIVE HPS2-THRIVE was a randomised, international multi-centre trial of 2 g of extended-release niacin and 40 mg of laropiprant or a matching placebo daily in 25,673 participants with a history of vascular disease that ran in 245 sites in six countries (89 UK clinical centres).1 This study showed that participants allocated to niacin–laropiprant did not have a lower risk of major vascular events than those allocated to placebo, but the niacin/laropiprant did increase the risk of serious adverse events, particularly diabetes diagnosis and control, bleeding and infection.2 Assignment to niacin–laropiprant, as compared with assignment to placebo, was not associated with a significant reduction in the incidence of major vascular events (1696 participants with events [13.2%] and 1758 participants with events [13.7%], respectively; RR, 0.96; 95% CI, 0.90- 1.03; P=0.29) with no effect on fatal or nonfatal stroke (198 vs 199, RR 1.00, 95%CI: 0.88-1.13, p=0.56). Assignment to treatment with niacin–laropiprant was associated with an average reduction in the LDL cholesterol level of 0.25 mmol/L (as measured in the central laboratory), an average increase in the HDL cholesterol level of 0.16 mmol/L, and an average reduction in the
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