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Completed

NCT Number: NCT02699645

Triple Therapy Prevention of Recurrent Intracerebral Disease EveNts Trial

An investigator initiated and conducted, multicentre, international, double-blinded, placebo-controlled, parallel-group, randomised controlled trial to determine the effect of more intensive blood pressure control provided by a fixed low-dose combination blood pressure lowering pill ("Triple Pill") strategy on top of standard of care, on time to first occurrence of recurrent stroke in patients with a history of stroke due to intracerebral haemorrhage.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Liverpool Hospital, Liverpool, New South Wales, Australia

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About this study

Intracerebral haemorrhage (ICH) is the most serious and least treatable form of stroke, accounting for at least 10% of the 20 million new strokes that occur globally each year. Survivors of ICH are at high risk of recurrent ICH and other serious cardiovascular events.

While there is strong evidence that this risk can be reduced by lowering the blood pressure (BP) of patients after ICH, many patients with ICH do not receive BP-lowering treatment long-term unless BP levels are particularly high, and many do not receive BP combination therapy.

The aim of this study is to assess the safety and efficacy of a combination of fixed low-dose generic BP lowering agents, as a "Triple Pill" strategy on top of standard of care for the prevention of recurrent stroke in patients with a history of ICH and high normal or low grade hypertension. The study is a large-scale, international, double-blind, placebo-controlled, randomised controlled trial.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adults (≥18 years) with a history of primary ICH that is confirmed by imaging (copy of the brain imaging report to be uploaded to the database, labelled with participant identification (ID) and with personal identifiers removed)
  • Clinically stable, as judged by investigator
  • Average of two resting SBP levels measured 5 minutes apart in the range 130-160mmHg recorded in a seated position (National Heart Foundation of Australia Guidelines). (Patients with higher SBP can be included if considered by attending clinician that management is consistent with local standards of clinical practice)
  • Geographical proximity to the recruiting hospital and/or follow-up medical clinic site to allow ready access for in-person clinic visits during follow-up
  • No clear contraindication to any of the study treatments
  • Provision of written informed consent

Exclusion criteria

  • Taking an ACE-I that cannot be switched to any of the following alternatives:
  • telmisartan 20 or 40mg, amlodipine 2.5 or 5mg, indapamide 1.25mg, or
  • an equivalent class (ARB, CCB or thiazide [TZ]-like diuretic), or
  • a BB
  • Contraindication to any of the study medications, in the context of currently prescribed BP-lowering medication
  • Unable to complete the study procedures and/or follow-up
  • Females of child-bearing age and capability, who are pregnant or breast-feeding, or those of child-bearing age and capability who are not using adequate birth control
  • Significant hyperkalaemia and/or hyponatremia, in the opinion of the responsible physician
  • Estimated glomerular filtration rate (eGFR) <30mL/min/1.73m2
  • Severe hepatic impairment (alanine aminotransferase [ALT] or aspartate aminotransferase [AST] >3x the upper limit of normal [ULN])
  • Any other condition that in the opinion of the responsible physician or investigator renders the patient unsuitable for the study (e.g. severe disability [i.e. simplified modified Rankin Scale (smRS) of 4-5] or significant memory or behavioural disorder)

Exclusion criteria

for MRI (as applies)

  • Any MRI contraindication (e.g. metallic implants, claustrophobia, etc) or participant refusal.

Treatment and study plan

telmisartan 20mg, amlodipine 2.5mg, and indapamide 1.25mg

Drug

1 pill taken orally once daily for average of 72 months

Other names: Triple Pill

Placebo

Drug

1 pill taken orally once daily for average of 72 months

Primary outcomes

  1. Recurrent Stroke

    Time frame: Average of 6 years

    Time to first occurrence of recurrent stroke, whether ischaemic or haemorrhagic.

Secondary outcomes

  1. Recurrent ICH

    Time frame: Average of 6 years

    Time to first occurrence of recurrent ICH

  2. Ischaemic Stroke

    Time frame: Average of 6 years

    Time to first occurrence of ischaemic stroke

  3. Fatal or disabling stroke

    Time frame: Average of 6 years

    Time to first occurrence of fatal or disabling stroke

  4. Mortality

    Time frame: Average of 6 years

    Mortality

  5. MACE

    Time frame: Average of 6 years

    Major adverse cardiovascular events - CV death, non-fatal MI or non-fatal stroke

  6. Physical function

    Time frame: Average of 6 years

    Physical function as assessed by smRS

  7. Change in SBP

    Time frame: Average of 6 years

    Change in SBP

  8. HRQoL according to the EQ-5D-3L

    Time frame: Average of 6 years

    Health-related quality of life according to the European Quality of Life 5-Dimensional Assessment, 3-Level version

  9. Cognitive Impairment

    Time frame: Average of 6 years

    Overall defined by standard cut-points on the Montreal Cognitive Assessment (MoCA)

  10. Cognitive Impairment Supplement

    Time frame: Average of 6 years

    Overall defined by standard cut-points with Brief Memory and Executive Test (BMET) together with assessments of functional impairment related to cognition defined by QDRS score and short form IQCODE, which will also allow subtyping of 'probable' or 'definite' dementia or mild cognitive impairment according to standard diagnostic criteria.

  11. Depression

    Time frame: Average of 6 years

    According to standard cut-point scores on the PHQ-9

  12. Cerebral small vessel disease

    Time frame: Average of 6 years

    Defined by various standard markers on routine MRI, measured by individual components and overall CSVD burden. The primary measure of CSVD is FLAIR WMH volume.

  13. Medication Adherence

    Time frame: Average of 6 years

    Self-reported measures, pill counts

  14. Safety in terms of Serious Adverse Events (SAEs)

    Time frame: Average of 6 years

    SAEs

  15. Tolerability in terms of Adverse Events of Special Interest (AESIs)

    Time frame: Average of 6 years

    AESIs: Headache, Syncope/collapse, Falls, Pedal oedema/ankle swelling, Hypo/hyperkalaemia, Hyponatraemia

Sponsors and collaborators

Lead sponsor

The George Institute

Other

Collaborators

  • The University of New South Wales

Registry information

Official study title

Triple Therapy Prevention of Recurrent Intracerebral Disease EveNts Trial (TRIDENT), Substudies: MRI, Cognitive

Acronym: TRIDENT

Important dates

Study start
2017
Primary completion
2025
Study completion
2025
First posted
Mar 4, 2016
Registry last updated
Sep 12, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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