Rapid Switch From Flolan to Remodulin in the Outpatient Clinic

Rapid Switch From Intravenous Epoprostenol to Intravenous Remodulin® (Treprostinil Sodium) in Patients With Stable Pulmonary Arterial Hypertension in the Outpatient Clinic: Safety, Efficacy and Treatment Satisfaction

The purpose of this 8-week study is to compare the effects of switching from therapy with epoprostenol or Flolan to IV Remodulin. This study will also assess the effect that changing to Remodulin will have on patient satisfaction with their treatment and impact on quality of life.

Study Overview

• Status: Terminated
• Conditions: Hypertension, Pulmonary
• Intervention / Treatment: Drug: treprostinil sodium

Detailed Description

Pulmonary arterial hypertension (PAH), which is defined as an elevation in pulmonary arterial pressure and pulmonary vascular resistance, is a severe hemodynamic abnormality common to a variety of diseases and syndromes. Elevation in pulmonary arterial pressure causes an increase in right ventricular afterload, impairing right ventricular function and ultimately leading to inactivity and death. The goal of PAH treatment is to lengthen survival time, to ameliorate symptoms of PAH and to improve health related quality of life (HRQOL).

Remodulin® (treprostinil sodium), a stable analogue of prostacyclin, possesses potent pulmonary and systemic vasodilatory and platelet anti-aggregatory actions in vitro and in vivo. Recently, Remodulin received FDA approval for intravenous therapy based upon bioequivalence of the IV and SC routes of administration. Remodulin is more chemically stable than epoprostenol and may offer potential safety and convenience advantages compared to intravenous epoprostenol that may impact Health Related Quality of Life (HRQOL) and/or patient satisfaction. Unlike epoprostenol, Remodulin does not need to be mixed daily and is stable at room temperature eliminating the need for ice packs. Furthermore, since Remodulin remains in the body longer than epoprostenol (4 hrs instead of less than 5 minutes) there is less risk of cardiovascular collapse from a sudden interruption of infusion, such as a line clog. In an open-label study in Europe, patients who were using a type of portable medication pump called the CADD Legacy pump were rapidly switched from Flolan to Remodulin with no serious side effects. This study will examine effects of switching from therapy with epoprostenol or Flolan to IV Remodulin and compare changes in HRQOL and treatment satisfaction before and after rapid switch from epoprostenol to Remodulin in patients with pulmonary hypertension using the CADD legacy pump.

• Study Type: Interventional
• Enrollment (Actual): 7
• Phase: Phase 4

Contacts and Locations

Study Locations

• United States
  • North Carolina
    • Durham, North Carolina, United States, 27705
      • Duke University Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Be between 18 years and 70 years of age
• Be male or if female, be physiologically incapable of childbearing or practicing an acceptable method of birth control (women of childbearing potential must have a negative pregnancy test).
• Have a current World Health Organization (WHO) functional classification of II-III status
• Diagnosis of one of the following WHO Classifications of pulmonary hypertension: Group 1 pulmonary arterial hypertension (IPAH, FPAH, APAH);Group 3 pulmonary hypertension associated with lung disease (Mild interstitial lung disease associated with predominant features of right heart failure as seen in Group 1 PAH patients); Group 4 pulmonary hypertension due to chronic thromboembolic pulmonary hypertension (CTEPH)
• In the opinion of the investigator, be hemodynamically stable with no signs or symptoms of disease progression
• Be receiving intravenous epoprostenol therapy for at least three months and a stable dose for at least one month prior to Baseline.
• Have a central intravenous catheter in place.
• Have a baseline six-minute walk distance of at least 150 meters.
• Be optimally treated with conventional pulmonary hypertension therapy and clinically stable for at least one month prior to baseline assessments.
• Be mentally and physically capable of learning to administer Remodulin using an intravenous infusion pump.

Exclusion Criteria:

• Be a nursing or pregnant woman
• Have had a new type of chronic therapy (including but not limited to oxygen, a different category of vasodilator, a diuretic, digoxin, bosentan, sildenafil) for pulmonary hypertension added within the last month.
• Have any PAH medication discontinued within the week prior to study entry.
• Received any prostacyclin or prostacyclin analog except epoprostenol in the past 3 months.
• Have an on-going central venous line infection within the past 30 days.
• Have evidence of predominant left-sided heart disease
• Have any other disease that is associated with pulmonary hypertension (e.g. sickle cell anemia, schistosomiasis).
• Have a musculoskeletal disorder (e.g. arthritis, artificial leg, etc.) or any other disease, which is thought to limit ambulation, or be connected to a machine, which is not portable.
• Have uncontrolled systemic hypertension as evidenced by a systolic blood pressure greater than 160 mmHg or diastolic blood pressure greater than 100 mmHg.
• Be receiving an investigational drug, have in place an investigational device, or have participated in an investigational drug study within the past 30 days.
• Have the presence of any physiological or psychological condition that contraindicates the administration of Remodulin.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: treprostinil sodium; all subjects had switched from IV epoprostenol to IV treprostinil sodium	Drug: treprostinil sodium; rapid switch from intravenous epoprostenol on CADD ambulatory pump to intravenous treprostinil sodium; Other Names: Remodulin; Flolan

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Change in Six Minute Walk Distance	Baseline and Week 8

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in WHO Functional Classification	Class I: No limitation of physical activity. Class II: Slight limitation of physical activity. Class III: Marked limitation of physical activity. Class IV: Inability to carry out any physical activity without symptoms.	Baseline and Week 8
Change in Borg Dyspnea Score Immediately After Six Minute Walk	The Borg Dyspnea Score is a 10-point scale rating the maximum level of dyspnea experienced after the Six-Minute Walk Test. Scores range from 0 (for the best condition) to 10 (for the worst condition).	Baseline and Week 8
Change in Score on Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR)	The Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR), a validated PAH-specific instrument consisting of 65 items used to assess symptoms, functioning and quality of life. The questionnaire is divided into three sections; Symptoms (Scores 0-25; high scores indicate more symptoms), Activity (Score 0-30; low score indicates good functioning)and Quality of Life (0-25; high scores indicate poor QoL). The sum of these scores equates to the Total score (0-80). In the CAMPHOR scores, lower scores indicate improvements.	Baseline and Week 8
Change in Score on Treatment Satisfaction Questionnaire for Medication	The Treatment Satisfaction Questionnaire for Medication (TSQM), a validated generic measure of treatment satisfaction consisting of 14 Likert-response items comprising four domains: Effectiveness, Side Effects, Convenience, and Global Satisfaction. The TSQM was completed at baseline and at Week 8. The TSQM consists of 13 items that made up three specific scales (Effectiveness, Side effects, Convenience) and one global satisfaction scale. TSQM items are scaled using either a 5-point or 7-point scale. Five-point scales are used for unidimensional continua (e.g. extremely satisfied to not at all), while 7-point scales are used for bipolar continua(e.g., extremely positive to extremely negative. Non-neutral midpoints are used for 7-point scales, resulting in a greater range of positive response options than negative options for these items. Scale scores are transformed into scores ranging from 0 to 100, with a higher score indicating more satisfaction.	Baseline and Week 8
Change in Total Weekly Time Spent With the Specific Activities Associated With Intravenous Remodulin Therapy Compared to Same Activities With Intravenous Epoprostenol	A Drug Administration Activities Diary, used by subjects to record in detail the amount of time (in minutes) spent on specifically-defined drug preparation/administration activities (e.g. diluting drug, preparing reservoir, and changing tubing), was completed over a 7-day period during the Screening period while on epoprostenol and repeated at Week 7 following transition to Remodulin. Drug Administration Activities Diary results are reported as average time per week spent on drug administration activities	Baseline and Week 8
Change in PAH Signs and Symptoms- Fatigue	The presence or absence of fatigue was documented. If present, the intensity of fatigue was rated mild, moderate, or severe.	Baseline and Week 8
Change From in Signs and Symptoms of PAH- Edema	The presence or absence of edema was documented. If present, the intensity of edema was rated mild, moderate, or severe.	Baseline and Week 8
Change in Signs and Symptoms of PAH- Dyspnea	The presence or absence of dyspnea was documented. If present, the intensity of dyspnea was rated mild, moderate, or severe.	Baseline and Week 8
Change in Signs and Symptoms of PAH- Orthopnea	The presence or absence of orthopnea was documented. If present, the intensity of orthopnea was rated mild, moderate, or severe.	Baseline and Week 8
Change in Signs and Symptoms of PAH- Dizziness	The presence or absence of dizziness was documented. If present, the intensity of dizziness was rated mild, moderate, or severe.	Baseline and Week 8
Change in Signs and Symptoms of PAH- Syncope	The presence or absence of syncope was documented. If present, the intensity of syncope was rated mild, moderate, or severe.	Baseline and Week 8
Change in Signs and Symptoms of PAH- Chest Pain	The presence or absence of chest pain was documented. If present, the intensity of chest pain was rated mild, moderate, or severe.	Baseline and Week 8
Patient Impression of Change Questionnaire	A Patient Global Impression of Change Questionnaire, which consists of three items that ask the subject to rate changes (much better, somewhat better, about the same, somewhat worse, much worse) in their symptoms of PAH, the amount of time spent on activities associated with preparing and administering PAH therapy, and their satisfaction with their PAH therapy since transitioning from epoprostenol to intravenous Remodulin was conducted at Week 8 only and responses are reported as frequency distributions.	Week 8

Collaborators and Investigators

• Sponsor: United Therapeutics
• Investigators: Principal Investigator: Victor Tapson, MD, Duke Health

Study record dates

Study Major Dates

• Study Start: March 1, 2008
• Primary Completion (Actual): January 1, 2010
• Study Completion (Actual): February 1, 2012

Study Registration Dates

• First Submitted: March 20, 2008
• First Submitted That Met QC Criteria: March 25, 2008
• First Posted (Estimated): March 26, 2008

Study Record Updates

• Last Update Posted (Estimated): January 3, 2024
• Last Update Submitted That Met QC Criteria: December 12, 2023
• Last Verified: June 1, 2013

More Information

Terms related to this study

• Keywords: Quality of life; Pulmonary arterial hypertension; treatment satisfaction; rapid switch; remodulin
• Additional Relevant MeSH Terms: Cardiovascular Diseases; Vascular Diseases; Respiratory Tract Diseases; Lung Diseases; Hypertension; Pulmonary Arterial Hypertension; Hypertension, Pulmonary; Antihypertensive Agents; Treprostinil
• Other Study ID Numbers: RIV-PH-413