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A Study of Ranolazine Acute Administration and Short Term Administration in Pulmonary Arterial Hypertension

This study is currently recruiting participants. (see Contacts and Locations)
Verified August 2014 by University of Chicago
Information provided by (Responsible Party):
University of Chicago Identifier:
First received: April 26, 2012
Last updated: August 4, 2014
Last verified: August 2014

The purpose of this study is to assess the safety of ranolazine in people with pulmonary arterial hypertension (PAH) and who are receiving 1 or more background PAH therapies: ambrisentan, sildenafil,tadalafil, epoprostenol, treprostinil (IV, SC, inhaled), or iloprost. The primary objective is:

  • To estimate the effect of ranolazine administration on acute hemodynamics.
  • To assess safety of ranolazine acutely over 6 hrs in the catheterization lab and after 12 weeks of therapy
  • To assess changes in right ventricular function after 12 weeks of therapy.

Condition Intervention Phase
Pulmonary Arterial Hypertension
Drug: Ranolazine
Drug: Placebo
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: A Phase I Study of Ranolazine Acute Administration and Short Term Administration in Pulmonary Arterial Hypertension

Resource links provided by NLM:

Further study details as provided by University of Chicago:

Primary Outcome Measures:
  • Change in pulmonary vascular resistance (PVR) [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • Change in CPET (VE/VCO2, PETCO2, peak VO2, peak HR, peak RER, work max (MET or Watt), sub maximum exercise time [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]
  • Change in RV echo parameters: 2D, 3D [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]
  • Change in 6MWD [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]
  • Safety/SAE [ Time Frame: 12 weeks ] [ Designated as safety issue: Yes ]
    AE and SAE on study drug and acutely changes in blood pressure and PAP

Estimated Enrollment: 16
Study Start Date: August 2011
Estimated Study Completion Date: December 2015
Estimated Primary Completion Date: December 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Ranolazine Drug: Ranolazine
ranolazine sustained release at a dose of 500mg for one month followed by a dose of 1000mg.
Other Name: GS-9668
Placebo Comparator: Placebo Drug: Placebo
placebo at a dose of 500mg for one month followed by a dose of 1000mg.
Other Name: sugar pill

Detailed Description:

Pulmonary arterial hypertension is a medical disorder in which pressure in the blood vessels going from the right side of the heart to the lungs is higher than normal. The increased blood pressure in the lungs places a strain on the heart. This strain causes the heart to pump less blood into the lungs, causing physical symptoms of shortness of breath and tiredness. The added strain to the heart can cause physical symptoms of swelling in the feet and abdomen. These symptoms can get worse over time due to the decreased pumping ability of the heart.

This study will use a drug called ranolazine. This drug has been approved by the Food and Drug Administration (FDA) to treat chronic angina (chest pain). However, since it has not been approved for use in PAH its use in this study is considered experimental.


Ages Eligible for Study:   18 Years to 72 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • All subjects age 18-72 yrs will have a diagnosis of PAH. PAH as defined as idiopathic PAH, heritable PAH or PAH associated with collagen vascular disease, congenital heart disease (repaired), or anorexigen use. A history of PAH as defined by hemodynamics at diagnosis by right heart catheterization defined as: mean PAP >25 mmHg with a normal PCWP < 15 mm Hg at rest and a PVR >3 Wood units.
  • Baseline 6MW >150 meters
  • Patients will be receiving FDA approved PAH monotherapy or dual therapy medications: including, ambrisentan (5,10mg), sildenafil (60-240mg), tadalafil (40mg), epoprostenol, treprostinil, or iloprost at stable doses for >90days.
  • Receiving conventional therapy as clinically indicated (oxygen, calcium channel blockers, digoxin) with dose that is unchanged in the preceding 30 days prior to enrollment. This is excluding anticoagulants (warfarin) as the patient's dose may not be stable if the patient is having a cardiac catheterization at baseline within 30 days of enrollment and warfarin is being held.

Exclusion Criteria:

  • PAH Category II-IV and Category I associated with all other etiologies: HIV, portopulmonary disease
  • All subjects on monotherapy calcium blockers as "calcium blocker responders" irrespective of therapy
  • All subjects receiving CY3P4 inducer (i.e. bosentan)
  • Subjects with pulmonary hypertension due to significant interstitial lung disease, chronic obstructive pulmonary disease, congestive heart failure, valvular heart disease
  • Subjects with (World Health Organization (WHO) functional Class I or Class IV
  • Subjects with total lung capacity (TLC) < 60% of predicted
  • Subjects with significant obstructive lung disease with FEV1/FVC ratio < 70% of predicted
  • Subjects with hypotension defined as systolic arterial pressure < 90 mmHg at baseline
  • Subjects with hypertension defined as systolic arterial pressure >140 mmHg at baseline and a diastolic arterial pressure > 90 mmHg despite adequate medical therapy.
  • Subjects with impaired renal function as defined as estimated glomerular filtration rate (eGFR) less than 45 mL/min/BSA (where BSA=1.73m2) as calculated by the Modification of Diet in Renal Disease (MDRD) equation:

Patients with eGFR 45-50 mL/min/BSA may be enrolled only after discussion with data safety monitoring board. Patients with eGFR ≥ 50 mL/min/BSA may be enrolled without such a discussion.

  • Subjects with liver function tests (transaminases (AST/ALT), total bilirubin, and alkaline phosphatase) >2X normal values
  • Subjects with acutely decompensated heart failure requiring hospitalization or medication adjustment or hospitalization for any cause within the previous 30 days prior to screening
  • Subjects may not be receiving any other investigational agents
  • Subjects with left ventricular ejection fraction <45% or left ventricular shortening fraction <0.2
  • Subjects with acute myocardial infarction within 90 days prior to screening
  • Subjects taking nitrates for any medical problem
  • Subjects with a recent (<180 days) history of pulmonary embolism verified by ventilation/perfusion scan, angiogram or spiral CT scan
  • Pregnant or lactating women
  • Subjects with a history of current drug abuse including alcohol
  • History of gastric bypass surgery
  • History of sinus or atrioventricular nodal disease ie. sick sinus syndrome, or second or third degree heart block.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01757808

Contact: Mardi Gomberg-Maitland, MD 773-702-5589

United States, Illinois
University of Chicago Recruiting
Chicago, Illinois, United States, 60637
Principal Investigator: Mardi Gomberg-Maitland, MD         
Sponsors and Collaborators
University of Chicago
Principal Investigator: Mardi Gomberg-Maitland, MD University of Chicago
  More Information

No publications provided

Responsible Party: University of Chicago Identifier: NCT01757808     History of Changes
Other Study ID Numbers: 11-0301
Study First Received: April 26, 2012
Last Updated: August 4, 2014
Health Authority: United States: Institutional Review Board

Keywords provided by University of Chicago:
right ventricle
cardiopulmonary exercise testing

Additional relevant MeSH terms:
Cardiovascular Diseases
Vascular Diseases
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions processed this record on February 27, 2015