Dose Response to the Norepinephrine Precursor Droxidopa in Hypotensive Individuals With Spinal Cord Injury

NCT ID: NCT03602014

Last Updated: 2025-03-07

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Total Enrollment: 22 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2018-06-01
• Study Completion Date: 2021-12-31

Brief Summary

The goal of this study is to determine the efficacy of the drug Droxidopa (Northera) in increasing blood pressure in subject with hypotension, low blood pressure, which is classified as blood pressure less than 110/70 in males and 100/70 in females. The first aim is to determine the proportion of subject with Spinal Cord Injury (SCI) who have a normotensive response to Droxidopa. The second is to determine the proportion of subject with SCI who express a hypertensive response to Droxidopa. A Normal blood pressure ranges from 111-139 in males and 101-139 in females and a hypertensive blood pressure is anything higher than 140 in males and females.

The study would take place in James J. Peters VA Medical Center (JJPVAMC) and The Icahn School of Medicine at Mount Sinai (ISMMS) in Manhattan, New York.

Detailed Description

Interruption of sympathetic cardiovascular autonomic regulation following spinal cord injury (SCI) is associated with significantly reduced plasma norepinephrine (NE) levels, hypotension and orthostatic hypotension (OH), particularly in individuals with high cord lesions. Although the incidence of hypotension is reported to be as high as 70% in persons with cervical lesions (i.e., tetraplegia), the vast majority of these individuals remains asymptomatic and, therefore, does not raise clinical concern, or prompt intervention. While it is appreciated that clinicians are faced with substantial challenges in managing blood pressure (BP) in persons with SCI, contrary to the prevailing belief, asymptomatic hypotension and OH are not benign conditions. Reports suggest that asymptomatic hypotensive individuals with SCI may have subclinical cognitive dysfunction affecting memory and attention processing and increased incidence of fatigue and depression compared to normotensive individuals with SCI. It must be appreciated that to date, there are no FDA approved pharmaceutical options proven to be safe and effective for treatment of hypotension and OH in the SCI population. Until 2014, midodrine hydrochloride was the only agent with FDA approval for treatment of symptomatic neurogenic OH (NOH). Midodrine, an alpha-agonist, is the most commonly prescribed agent used to treat symptomatic hypotension in the SCI population despite a lack of convincing evidence of safety or efficacy. In 2014 droxidopa (L-threo-3,4-dihydroxyphenylserine - NORTHERA; Chelsea Therapeutics, Charlotte, NC) was approved by the FDA for treatment of symptomatic NOH based on data collected in conditions of autonomic dysfunction. Droxidopa is a NE precursor that is stored in neuronal and non-neuronal tissue and has been shown to increase standing BP and reduce symptoms of orthostatic intolerance in individuals with symptomatic NOH. We recently reported preliminary evidence of a mean increase in seated BP in individuals with SCI following oral administration of 400 mg of droxidopa; however, this dose was effective in only 5 of the 10 subjects tested and the BP effect waned over a 4-hour observation. Because of its unique pharmacokinetic profile, droxidopa is a highly promising agent to treat hypotension in persons with SCI. As such; there exists a pressing imperative to determine the clinical value and safety of droxidopa in hypotensive individuals with SCI.

Conditions

Hypotension, Orthostatic; Hypotension; Spinal Cord Injuries

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Study 1: Dose Optimization of Northera

Subjects will be administered oral droxidopa in a dose escalation, open-label manner beginning with 200 mg. The dose will be adjusted upwards by 100 mg on subsequent visits until average Systolic Blood Pressure (SBP) recorded 60-120 minutes after dose administration is 111-139 mmHg in males and 101-139 mmHg in females, sustained elevation (≥ 30 consecutive minutes) in seated SBP ≥ 140/100 mmHg, maximum dose of 800 mg is reached without adequate SBP response. Subjects will visit the testing laboratory on as few as 1 (200 mg) and as many as 7 (800 mg) days. Seated cardiovascular assessments will be monitored and recorded at 15-minute intervals for 4-hours, and the side effects questionnaire will be administered hourly during the 4-hour study. Each study visit will take about 5 hours.

Group Type: EXPERIMENTAL

Northera

Intervention Type: DRUG

Study 1 is a dose optimization, open-label trial of Northera from a dose range of 200mg up to 800mg.

Study 2: Blinded Placebo & Northera

Participants will then be administered either oral optimal dose of Northera (Droxidopa) or matching placebo in a double-blinded manner and will remain in the supine position for 60 minutes. Subjects will remain in their wheelchair for instrumentation, which will include: 1) ECG, 2) brachial BP, 3) finger arteriolar BP and 4) Cerebral Blood Flow velocity (CBFv).

Group Type: PLACEBO_COMPARATOR

Northera

Intervention Type: DRUG

Study 1 is a dose optimization, open-label trial of Northera from a dose range of 200mg up to 800mg.

Placebo

Intervention Type: OTHER

Study 2 is blinded placebo controlled trial using the individualized optimal dose of droxidopa determined by study 1.

Interventions

Northera

Study 1 is a dose optimization, open-label trial of Northera from a dose range of 200mg up to 800mg.

Intervention Type: DRUG

Placebo

Study 2 is blinded placebo controlled trial using the individualized optimal dose of droxidopa determined by study 1.

Intervention Type: OTHER

Other Intervention Names

Droxidopa

Eligibility Criteria

Inclusion Criteria

Study 1:

1. Male or Female, age 18 to 89 with traumatic SCI.

2. SCI Subjects (n=40):

1. Any level of injury;

2. Any American Spinal Injury Association Impairment Scale (AIS) grade of SCI;

3. Non-ventilator dependent

4. Primarily wheelchair dependent for mobility;

5. Duration of injury < 1 year

3. Low Blood Pressure:

1. Systolic BP less than 110 mmHg and/or diastolic BP less than 70 mmHg for males.

2. Systolic BP less than 100 mmHg and/or diastolic BP less than 70 mmHg for females.

4. Primary Language is English.

5. Able to provide informed consent

Study 2:

6. Male or Female, age 18 to 89 with traumatic SCI.

7. SCI Subjects (n=40):

1. Any level of injury;

2. Any AIS grade of SCI;

3. Non-ventilator dependent

4. Primarily wheelchair dependent for mobility

5. Duration of injury < 1 year

8. Low Blood Pressure:

1. Systolic BP less than 110 mmHg and/or diastolic BP less than 70 mmHg for males.

2. Systolic BP less than 100 mmHg and/or diastolic BP less than 70 mmHg for females.

9. Primary Language is English.

10. Able to provide informed consent

11. Showed a normotensive blood pressure in response to Droxidopa during study 1.

Exclusion Criteria

• Current illness or infection
• Individuals with frequent or severe autonomic dysreflexia:

1. More than 3 symptomatic events per week

2. BP ≥140/90 mmHg

3. Significant adverse subjective symptoms reporting

• Hypertension
• Any neurological condition other than SCI (Alzheimer's disease, dementia, stroke, multiple sclerosis, Parkinson's disease, etc.)
• History of epilepsy or other seizure disorder
• History of traumatic brain injury (TBI)
• Liver or kidney disease
• Bladder problems including blockage of the urine and/or weak urine stream.
• Diagnosis of a psychiatric disorder such as schizophrenia or bipolar disorder
• Known artery disease, heart failure, Atrio-ventricular block, and irregular heartbeat
• Any allergies to droxidopa, asprin, polyethylene oxide, polyethylene glycol, hydroxypropyl cellulose, butylated hydroxytoluene, magnesium stearate, hypromellose, yellow ferric oxide, and red ferric oxide
• Major surgery in the last 30 days
• Illicit drug abuse in the past 6 months
• Pregnant
• Your prescription medications will be reviewed by the study investigators and research staff. If you are currently taking medications to treat any of the following please make the investigators aware:

d. Depression, Schizophrenia, Attention Deficit Hyperactivity Disorder (ADHD) e. Pain (opioids) f. Infection or illness (antibiotics) g. Erectile dysfunction (Viagra, Cialis, etc.) h. Overactive bladder i. High or low blood pressure j. Migraine headaches k. Malaria l. asthma

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 89 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

New York State Department of Health

OTHER_GOV

Sponsor Role: collaborator

James J. Peters Veterans Affairs Medical Center

FED

Sponsor Role: lead

Responsible Party

Jill M. Wecht, Ed.D.

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Jill M Wecht, Ed.D

Role: PRINCIPAL_INVESTIGATOR

James J. Peter's VAMC

Locations

The Icahn School of Medicine at Mount Sinai

New York, New York, United States

James J. Peters Veteran's Affair Medical Center

The Bronx, New York, United States

Countries

United States

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Document Type: Study Protocol, Statistical Analysis Plan, and Informed Consent Form

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Other Identifiers

WEC-17-042

Identifier Type: -

Identifier Source: org_study_id