Clinical trial NCT02052011: Ranolazine and Microvascular Angina by PET in the Emergency Department
Official title: Ranolazine and Microvascular Angina by PET in the Emergency Department (RAMP-ED)
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Microvascular Angina
Keywords: Chest Pain
Microvascular Angina
Ranolazine
Emergency department
PET
Lead sponsor: Yale University
Sponsor class: OTHER
Collaborators: name: Gilead Sciences
First posted: 2014-01-31
Enrollment: 31
Sex: ALL
Minimum age (years): 30
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The purpose of this study is to determine the effectiveness of Ranolazine for the treatment chest pain from disease of small vessels of the heart also known as 'microvascular angina'.

Detailed description: The Yale Chest Pain Center (CPC) is a unique clinical lab that provides an integrated interdisciplinary research team, access to high volume of chest pain patients largely free of coronary disease (93%) as well state of the art diagnostics including cardiac PET and a sophisticated system for serum processing and banking facilities. The CPC cohort represents a unique population with unrecognized microvascular disease and is often only accessible through the ED. We propose a one-year pilot study to understand the mechanisms of angina relief by Ranolazine (n=20) in patients with microvessel disease in the ED population as compared to controls (n=10) at baseline and at 1-month. In addition, changes in pain scores and function as measured by Seattle Angina Questionnaire (SAQ), recidivism and costs will be measured and correlated with changes in coronary flow reserve (CFR). Serum samples will be obtained and banked for future marker analysis as intermediate surrogates of outcomes.

Primary aim: To compare changes in coronary flow reserve as measured by cardiac PET in patients receiving Ranolazine versus controls.

Secondary aim: To determine if Ranolazine changes Seattle Angina Questionnaire (SAQ) scores in association with changes in Coronary Flow Reserve (CFR) versus controls.

Exploratory aim: To compare composite rate of return visits (office, emergency department and hospitalization) for chest pain within 4-weeks of enrollment between patients with and without Ranolazine.

Eligibility criteria: Inclusion Criteria:

* Patients admitted to the Yale ED CPC
* ≥ 30 years age
* chest pain or angina equivalent as their chief complaint within 24 hours of enrollment
* Coronary Flow Reserve(CFR) \<2.5 on PET scan in the ED.

Exclusion Criteria:

* Acute coronary syndrome
* Prior evidence of obstructive heart disease (history of Percutaneous Transluminal Coronary Angioplasty (PTCA), Coronary Artery Bypass Grafting (CABG) or calcium score \> 10 on PET scan)
* Resting blood pressure of systolic \>180/110 mm Hg or \<100/40
* known cardiomyopathy or heart failure
* currently on dialysis
* creatinine clearance \<30 ml/min
* liver cirrhosis
* significant aortic stenosis (murmur on exam)
* active use of cocaine or amphetamine
* current use of potent CYP3A4 inducers or inhibitors (such as ketoconazole, clarithromycin, HIV protease inhibitors)
* baseline QTc \> 580 msec
* use of drugs that prolong QTc (Haldol, erythromycin)
* pregnancy
* inability to read or understand English
* suffering from a condition that precludes interview (i.e. cognitive or communication impairment).

Primary outcomes:
measure: Coronary Flow Reserve
timeFrame: 4 weeks
Secondary outcomes:
Other outcomes:
Locations:
city: New Haven
country: United States
facility: Yale New Haven Hospital
state: Connecticut
Study officials:
affiliation: Yale University
name: Basmah Safdar, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Safdar B, D'Onofrio G, Dziura J, Russell RR, Johnson C, Sinusas AJ. Ranolazine and Microvascular Angina by PET in the Emergency Department: Results From a Pilot Randomized Controlled Trial. Clin Ther. 2017 Jan;39(1):55-63. doi: 10.1016/j.clinthera.2016.12.002. Epub 2017 Jan 9.