A Two Part Study (306A/306B) to Assess Droxidopa in Treatment of NOH in Patients With Parkinson's Disease
- Conditions
- Orthostatic HypotensionParkinson's Disease
- Interventions
- Other: Placebo
- Registration Number
- NCT01176240
- Lead Sponsor
- Chelsea Therapeutics
- Brief Summary
This is a study to evaluate the effects of an investigational drug, Droxidopa, in participants with neurogenic orthostatic hypotension (NOH), associated with Parkinson's disease. Droxidopa is being studied to determine the effects on blood pressure changes upon standing up (orthostatic challenge). Symptoms and activity measurements, including patient reported falls, will be evaluated to determine the effectiveness of the study drug.
Symptoms of NOH may include any of the following:
* Dizziness, light-headedness, feeling faint or feeling like you may blackout
* Problems with vision (blurring, seeing spots, tunnel vision, etc.)
* Weakness
* Fatigue
* Trouble concentrating
* Head \& neck discomfort (the coat hanger syndrome)
* Difficulty standing for a short time or a long time
* Trouble walking for a short time or a long time
The study duration is a maximum of approximately 14 weeks including up to 2 weeks for screening, up to 2 weeks for proper dose finding, followed by an 8 week treatment period and a follow-up visit after 2 weeks. A sufficient number of patients will be screened to allow approximately 211 randomized patients. An extension study is also available to continue treatment if determined appropriate by the study doctor. This Study is NCT01132326 sponsored by Chelsea Therapeutics and is enrolling by invitation only.
- Detailed Description
Systolic blood pressure is transiently and minimally decreased in healthy individuals upon standing. Normal physiologic feedback mechanisms work through neurally-mediated pathways to maintain the standing blood pressure, and thus maintain adequate cerebral perfusion. The compensatory mechanisms that regulate blood pressure upon standing are dysfunctional in subjects with orthostatic hypotension (OH), a condition that may lead to inadequate cerebral perfusion with accompanying symptoms of syncope, dizziness or lightheadedness, unsteadiness and blurred or impaired vision, among other symptoms.
Orthostatic hypotension may be a severely disabling condition which can seriously interfere with the quality of life of afflicted subjects. Currently available therapeutic options provide some symptomatic relief in a subset of subjects, but are relatively ineffective and are often accompanied by severe side effects that limit their usefulness. Support garments (tight-fitting leotard) may prove useful in some subjects, but is difficult to don without family or nursing assistance, especially for older subjects. Midodrine, fludrocortisone, methylphenidate, ephedrine, indomethacin and dihydroergotamine are among some of the pharmacological interventions that have been used to treat orthostatic hypotension, although only midodrine is specifically approved for this indication. The limitations of these currently available therapeutic options, and the incapacitating nature and often progressive downhill course of disease, point to the need for an improved therapeutic alternative.
Symptomatic OH in patients with Parkinson's disease is thought to be a consequence of norepinephrine depletion leading to low systolic blood pressure (SBP) and cerebral-hypoperfusion (reduced blood flow to the brain). Therapy with droxidopa results in increased levels of norepinephrine which should lead to improved SBP and cerebral perfusion thereby reducing the signs and symptoms of NOH. The present study will evaluate the clinical benefit in NOH patients with PD treated with droxidopa compared to those treated with placebo.
Participation in the study will last a maximum of 14 weeks consisting of a 2 week (maximum) screening/baseline period; a 2 week (maximum) double-blind dose titration; an 8 week double-blind placebo-controlled treatment period; and a 2 week follow-up period. An extension study is also available to continue treatment if determined appropriate by the study doctor. This Study is NCT01132326 sponsored by Chelsea Therapeutics and is enrolling by invitation only.
Droxidopa:
Droxidopa \[also, known as L-threo-3,4-dihydroxyphenylserine, L-threo-DOPS, or L-DOPS\] is the International non-proprietary name (INN) for a synthetic amino acid precursor of norepinephrine (NE), which was originally developed by Sumitomo Pharmaceuticals Co., Limited, Japan. It has been approved for use in Japan since 1989. Droxidopa has been shown to improve symptoms of orthostatic hypotension that result from a variety of conditions including Shy Drager syndrome (Multiple System Atrophy), Pure Autonomic Failure, and Parkinson's disease. There are four stereoisomers of DOPS; however, only the L-threo-enantiomer (droxidopa) is biologically active. Stereoisomers and enantiomers are compounds that have the same chemical elements; however, they may react differently as the elements are positioned in different locations.
The exact mechanism of action of droxidopa in the treatment of symptomatic NOH has not been precisely defined; however, its NE replenishing properties with concomitant recovery of decreased noradrenergic activity are considered to be of major importance.
Droxidopa has been marketed in Japan since 1989. Data from clinical studies and post-marketing surveillance programs conducted in Japan show that the most commonly reported adverse drug reactions with droxidopa are increased blood pressure, nausea, and headache. In clinical studies, the prevalence and severity of droxidopa adverse effects appear to be similar to those reported by the placebo control arm.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 225
Not provided
-
Score of 23 or lower on the mini-mental state examination (MMSE)
-
Concomitant use of vasoconstricting agents for the purpose of increasing blood pressure;
- Patients taking vasoconstricting agents such as ephedrine, dihydroergotamine, or midodrine must stop taking these drugs at least 2 days or 5 half-lives (whichever is longer) prior to their baseline visit (Visit 2) and throughout the duration of the study
-
Concomitant use of anti-hypertensive medication for the treatment of essential hypertension
-
Have changed dose, frequency or type of prescribed medication, within two weeks of baseline visit (Visit 2) with the following exceptions:
- Vasoconstricting agents such a ephedrine, dihydroergotamine, or midodrine
- Short courses (less than 2 weeks) of medications or treatments that do not interfere with, or exacerbate the patient's condition under study (e.g. antibiotics)
-
Known or suspected alcohol or substance abuse within the past 12 months (DSM-IV definition of alcohol or substance abuse)
-
Women who are pregnant or breastfeeding
-
Women of child bearing potential (WOCP) who are not using at least one method of contraception with their partner
-
Male patients who are sexually active with a woman of child bearing potential (WOCP) and not using at least one method of contraception
-
Untreated closed angle glaucoma, or treated closed angle glaucoma that, in the opinion of an ophthalmologist, might result in an increased risk to the patient
-
Sustained severe hypertension (BP ≥ 180 mmHg systolic or ≥ 110 mmHg diastolic in the seated or supine position which is observed in 3 consecutive measurements over an hour)
-
Any significant uncontrolled cardiac arrhythmia
-
History of myocardial infarction, within the past 2 years
-
Current unstable angina
-
Congestive heart failure (NYHA Class 3 or 4)
-
Diabetic autonomic neuropathy
-
History of cancer within the past 2 years other than a successfully treated, non-metastatic cutaneous squamous cell or basal cell carcinoma or cervical cancer in situ
-
Gastrointestinal condition, which in the Investigator's judgment, may affect the absorption of study drug (e.g. ulcerative colitis, gastric bypass)
-
Any major surgical procedure within 30 days of the baseline visit (Visit 2)
-
Previously treated with droxidopa
-
Currently receiving any investigational drug or have received an investigational drug within 30 days of the baseline visit (Visit 2)
-
Any condition or laboratory test result, which in the Investigator's judgment, might result in an increased risk to the patient, or would affect their participation in the study. Additionally the Investigator has the ability to exclude a patient if for any reason they feel the subject is not a good candidate for the study or will not be able to follow study procedures.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Placebo Placebo Placebo matched control Droxidopa Droxidopa droxidopa active drug
- Primary Outcome Measures
Name Time Method 306A Efficacy: Change in Orthostatic Hypotension Questionnaire Score (OHQ) Baseline, Week 8 The primary efficacy endpoint for 306A is the relative mean change in Orthostatic Hypotension Questionnaire (OHQ) composite score from baseline to end of study. The OHQ is the average of two sub-scales, the Orthostatic Hypotension Symptom Assessment Scale (OHSA) and the Orthostatic Hypotension Daily Activities Scale (OHDAS). Each asks the patient to rate their symptoms or disease impact over the past week. The OHSA sub-scale is the average of six items: 1) Dizziness, lightheadedness, feeling faint or feeling like you might black out; 2) Problems with vision; 3) Weakness; 4) Fatigue; 5) Trouble concentrating; and 6) Head/neck discomfort. The OHDAS sub-scale is the average of four items: 1) Standing for a short time; 2) Standing for a long time; 3) Walking for a short time; and 4) Walking for a long time. Each item is scored on a Likert scale from 0 to 10, with 10 being the most severe.
For the change from baseline, negative numbers represent improvement from baseline in OHQ score.306B Efficacy: Change in Dizziness/Lightheadedness/Feeling Faint/Feeling Like You Might Black Out (OHSA Item 1) Baseline, Week1 OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 1 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline.
- Secondary Outcome Measures
Name Time Method 306B Efficacy: Change in OHSA Item 1 From Baseline to Week 2 (Visit 5) Baseline, Week2 OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 2 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline.
306B Efficacy: Change in OHSA Item 1 From Baseline to Week 4 (Visit 6) Baseline, Week4 OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 4 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline.
306B Efficacy: Change in Systolic Blood Pressure (SBP) Measurements Post Standing From Baseline to Week 1 Baseline, Week 1 Measure: Lowest standing systolic blood pressure reading of immediately post standing and 3 minutes post standing. Change: standing systolic blood pressure at Week 1 (Visit 4) minus standing systolic blood pressure at baseline. A positive score indicates an improvement in standing systolic blood pressure during the double-blind randomized phase relative to value at baseline.
306B Efficacy: Change in OHSA Item 1 From Baseline to Week 8 (Visit 7) Baseline, Week 8 OHSA item 1 scale range: 0 (none) -10 (worst), likert scale. Change: score at Week 8 minus score at baseline. A negative score indicates an improvement in symptoms during the double-blind randomized phase relative to value at baseline.
306B Efficacy: Rate of Patient Reported Falls up to 10 weeks The average number of patient reported falls per week.
306B Efficacy: Change in Orthostatic Hypotension Questionnaire Score (OHQ) Baseline, Week 8 The relative mean change in Orthostatic Hypotension Questionnaire (OHQ) composite score from baseline to end of study. The OHQ is the average of two sub-scales, the Orthostatic Hypotension Symptom Assessment Scale (OHSA) and the Orthostatic Hypotension Daily Activities Scale (OHDAS). Each asks the patient to rate their symptoms or disease impact over the past week. The OHSA sub-scale is the average of six items: 1) Dizziness, lightheadedness, feeling faint or feeling like you might black out; 2) Problems with vision; 3) Weakness; 4) Fatigue; 5) Trouble concentrating; and 6) Head/neck discomfort. The OHDAS sub-scale is the average of four items: 1) Standing for a short time; 2) Standing for a long time; 3) Walking for a short time; and 4) Walking for a long time. Each item is scored on a Likert scale from 0 to 10, with 10 being the most severe.
For the change from baseline, negative numbers represent improvement from baseline in OHQ score.
Trial Locations
- Locations (60)
Northwest Neuro Specialists P.L.L.C.
🇺🇸Tucson, Arizona, United States
Hartford Hospital
🇺🇸Hartford, Connecticut, United States
Eastern Connecticut Neurology Specialists
🇺🇸Manchester, Connecticut, United States
Shore Neurology
🇺🇸Toms River, New Jersey, United States
Caring Clinical Research Incorporated
🇺🇸Laguna Hills, California, United States
Sentara Neurology Specialists
🇺🇸Virginia Beach, Virginia, United States
Center for Neurosciences
🇺🇸Tucson, Arizona, United States
Neurosearch II, Inc.
🇺🇸Ventura, California, United States
Alliance Clinical Research, LLC
🇺🇸Poway, California, United States
Neurosearch, Inc.
🇺🇸Reseda, California, United States
Neurological Physicians of Arizona
🇺🇸Gilbert, Arizona, United States
David L. Kreitzman, M.D., PC
🇺🇸Commack, New York, United States
Kingston Neurological Associates
🇺🇸Kingston, New York, United States
Premiere Research Institute
🇺🇸West Palm Beach, Florida, United States
Harvard Vanguard Medical Associates
🇺🇸Boston, Massachusetts, United States
Northern Michigan Neurology
🇺🇸Traverse City, Michigan, United States
Gulf Coast Neurology Center, PLLC
🇺🇸Ocean Springs, Mississippi, United States
Beth Israel Medical Center
🇺🇸New York, New York, United States
UT Southwestern Medical Center at Dallas
🇺🇸Dallas, Texas, United States
Neurological Associates, Inc.
🇺🇸Richmond, Virginia, United States
Precise Clinical Research
🇺🇸Topeka, Kansas, United States
Xenoscience
🇺🇸Phoenix, Arizona, United States
Tampa General University of South Florida
🇺🇸Tampa, Florida, United States
Neurology Neurodiagnostic Lab
🇺🇸Alabaster, Alabama, United States
Barrow Neurology Clinic
🇺🇸Phoenix, Arizona, United States
Banner Health
🇺🇸Sun City, Arizona, United States
Hoag Memorial Hospital, Presbyterian
🇺🇸Newport Beach, California, United States
Neurosearch - Pasadena
🇺🇸Pasadena, California, United States
Parkinson's Disease & Movement Disorder Disoder
🇺🇸Boca Raton, Florida, United States
Associated Neurologist of Southern Connecticut, PC
🇺🇸Fairfield, Connecticut, United States
Neurostudies Inc.
🇺🇸Port Charlotte, Florida, United States
Pharmax Research Clinic, LLC
🇺🇸Miami, Florida, United States
Neurology Associates of Ormond Beach
🇺🇸Ormond Beach, Florida, United States
Parkinson's Disease Treatment Center of Southwest Florida
🇺🇸Port Charlotte, Florida, United States
Lovelace Scientific Research
🇺🇸Sarasota, Florida, United States
Prism Research Group
🇺🇸Rome, Georgia, United States
Vero Neurology
🇺🇸Vero Beach, Florida, United States
Alexian Brothers Hospital Network
🇺🇸Elk Grove Village, Illinois, United States
North Oaks Health System
🇺🇸Hammond, Louisiana, United States
Detroit Clinical Research Center
🇺🇸Novi, Michigan, United States
Wellness and Research Center
🇺🇸Belvidere, New Jersey, United States
University of Nevada School of Medicine
🇺🇸Las Vegas, Nevada, United States
AdvanceMed Research
🇺🇸Lawrenceville, New Jersey, United States
Upstate Clinical Research, LLC
🇺🇸Albany, New York, United States
Parker Jewish Institute For Health Care and Rehabilitation Foundation
🇺🇸New Hyde Park, New York, United States
Asheville Neurology Specialists, PA
🇺🇸Asheville, North Carolina, United States
New York University
🇺🇸New York, New York, United States
Neurological Care of CNY
🇺🇸Syracuse, New York, United States
Guilford Neurologic Associates
🇺🇸Greensboro, North Carolina, United States
Ohio State University Medical Center
🇺🇸Columbus, Ohio, United States
Community Research
🇺🇸Cincinnati, Ohio, United States
Movement Disorder Clinic of Oklahoma PLLC
🇺🇸Tulsa, Oklahoma, United States
University of Toledo
🇺🇸Toledo, Ohio, United States
Clinical Trials Research Services LLC
🇺🇸Pittsburgh, Pennsylvania, United States
Ilumina Clinical Associates
🇺🇸Johnstown, Pennsylvania, United States
JM Neuroscience Research
🇺🇸Salt Lake City, Utah, United States
Emory University
🇺🇸Atlanta, Georgia, United States
Neurology Specialists of Decatur Research Center
🇺🇸Decatur, Georgia, United States
Clinical Trials of America Inc
🇺🇸Winston-Salem, North Carolina, United States
Neurology Consultants Medical Group
🇺🇸Whittier, California, United States