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Exploratory Study on the Safety, Tolerability, and Pharmacodynamics of IMB-1018972 in Subjects With Angina Due to Obstructive Coronary Artery Disease (IMPROVE-Ischemia)

A Randomized, Double-Blind, Placebo-Controlled, Exploratory Study on the Safety, Tolerability, and Pharmacodynamics of IMB-1018972 in Subjects With Angina Due to Obstructive Coronary Artery Disease

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04826172
Enrollment
58
Registered
2021-04-01
Start date
2021-04-23
Completion date
2023-09-21
Last updated
2024-04-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Coronary Artery Disease, Ischemia

Brief summary

The purpose of this study is to assess the safety and tolerability of IMB-1018972 in subjects with obstructive CAD and inducible ischemia.

Interventions

Modified release (MR) oral tablet

DRUGPlacebo

Matching oral tablet

Sponsors

Imbria Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
35 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Documented history of stable angina (CCS grading I-III) or anginal equivalent for ≥1 month prior to screening * Ability to safely abstain from beta blockers for 48 hours prior to echo examinations in the opinion of the Investigator * Preserved LV systolic function, defined as LVEF≥50% by any imaging modality * Obstructive CAD and recent evidence of stress-induced myocardial ischemia

Exclusion criteria

* Women of childbearing potential or who are currently pregnant or breast-feeding * Clinically indicated for coronary revascularization (PCI/CABG) at time of screening or clinically significant LMS or proximal LAD stenosis likely to warrant revascularization during the study period in the opinion of the investigator. * Type 1 insulin dependent diabetes mellitus (IDDM) * Presence of pacemaker, cardiac resynchronization therapy and/or implantable cardioverter defibrillator * Severe or clinically significant valvular heart disease * Clinically significant concurrent condition which could prevent the patient from performing any of the protocol-specified assessments, represent a safety concern if the patient participates in the trial or could confound trial assessments of safety or tolerability

Design outcomes

Primary

MeasureTime frame
Safety and tolerability of IMB-1018972 as measured by incidence and severity of treatment emergent AEs (including AEs leading to study drug discontinuation and AEs leading to death), as well as incidence of treatment emergent SAEsRandomization through Week 10 Safety Follow-up

Secondary

MeasureTime frameDescription
Change in number of ischemic segments during hyperemia (ischemia defined as absolute MBF ≤2.0 ml/kg/min) as measured by adenosine stress 15O-H2O PETBaseline through Week 8Ischemia score defined on the basis of absolute hyperemic MBF as: (1) MBF 2.0-2.3 ml/g/min; (2) 1.7- 2.0 ml/g/min; (3) MBF \<1.7 ml/g/min
Change in total ischemia burden measured as ischemia score summed across all segments as measured by adenosine stress 15O-H2O PETBaseline through Week 8
Change in inducible perfusion defect expressed as % of myocardium as measured by adenosine stress 15O-H2O PETBaseline through Week 8

Countries

Denmark, Finland, Sweden

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026