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Treatment of Complex Regional Pain Syndrome With Once Daily Gastric-Retentive Gabapentin (Gralise)

This study has been terminated.
(Due to limited population of research participants.)
Information provided by (Responsible Party):
Jianren Mao, MD, PhD, Massachusetts General Hospital Identifier:
First received: June 12, 2012
Last updated: February 15, 2017
Last verified: February 2017
The purpose of this study is to see if an FDA-approved drug (Gralise) can help people with certain types of neuropathic pain without causing too many side effects.

Condition Intervention
Complex Regional Pain Syndrome I (CRPS I)
Drug: Gabapentin

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: Treatment of Complex Regional Pain Syndrome With Once Daily Gastric-Retentive Gabapentin (Gralise)

Resource links provided by NLM:

Further study details as provided by Massachusetts General Hospital:

Primary Outcome Measures:
  • Visual Analog Scale (VAS) at Visit 3 [ Time Frame: At visit 3 ]
    Subjects rated their pain using the VAS at visit 3, which was the last day of their maintenance phase. After this visit, subjects begin to taper the gralise. The VAS is subject reported on a scale of 0-10 with 0 being no pain and 10 being the worst pain they can imagine. Results reported are an average of the 3 subjects who completed visit 3.

Enrollment: 5
Study Start Date: May 2013
Study Completion Date: June 2014
Primary Completion Date: June 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: CRPS I Pain Subjects

This is an open label study that involves taking Gralise pills (gastic-retentive gabapentin) for 8 weeks.

Day 1-15: Titration phase- titrate Gralise from 300 mg/day to 1800 mg/day Day 16-42: Maintenance phase- maintain the dose of 1800 mg/day Day 43-56: Taper phase- taper the Gralise from 100 mg/day to 300 mg/day

Drug: Gabapentin
Other Name: Gralise

Detailed Description:
This research is being conducted to see if the drug Gralise can help people with Complex Regional Pain Syndrom Type I (CRPS I) without causing too many side effects. CRPS I is one of the most common conditions of neuropathic pain (pain that results from damage to nerves in the peripheral nervous system). Gralise is approved by the U.S. Food and Drug Administration (FDA) to treat postherpetic neuralgia (a complication of the disease Shingles, which is caused by the chickenpox virus), but is not approved to treat CRPS I.

Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Subject will be between 18 to 80 years of age.
  2. Subject has not been on Gralise.
  3. Subject has not been on gabapentin for at least one month.
  4. Subject agrees to make no change in his/her current pain medications during the study period to ensure that comparisons can be made before and after the Gralise treatment.
  5. Subject has a VAS pain score of 5 or above at the beginning of the study.
  6. Subject has had CRPS I for at least three months to avoid clinical uncertainty and minimize the study variation.
  7. Female subjects of childbearing age must have a negative urine pregnancy test at the initial visit.

Exclusion Criteria:

  1. Subject has severe liver or renal disease that will affect the elimination of Gralise. (Renal dysfunction is defined as eGFR < 60. Hepatic dysfunction is defined as LFTs ≥ 3X ULN.)
  2. Subject has pending litigation related to his/her CRPS I condition.
  3. Subject is pregnant or lactating.
  4. Subject is allergic to gabapentin or Gralise.
  5. Subject has a positive urine (illicit) drug test.
  6. Subject has any history of suicidal thoughts or behaviors, as self reported or in documented medical history.
  7. Subjects with known seizure disorders (except febrile seizures) and/or taking antiepileptic drugs.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01623271

United States, Massachusetts
Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
Sponsors and Collaborators
Massachusetts General Hospital
Principal Investigator: Jianren Mao, M.D., Ph.D. Massachusetts General Hospital
  More Information

Responsible Party: Jianren Mao, MD, PhD, Principal Investigator, Massachusetts General Hospital Identifier: NCT01623271     History of Changes
Other Study ID Numbers: 2012P000466
Study First Received: June 12, 2012
Results First Received: December 22, 2016
Last Updated: February 15, 2017
Individual Participant Data  
Plan to Share IPD: No

Keywords provided by Massachusetts General Hospital:

Additional relevant MeSH terms:
Complex Regional Pain Syndromes
Reflex Sympathetic Dystrophy
Somatoform Disorders
Pathologic Processes
Mental Disorders
Autonomic Nervous System Diseases
Nervous System Diseases
Peripheral Nervous System Diseases
Neuromuscular Diseases
gamma-Aminobutyric Acid
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Antiparkinson Agents
Anti-Dyskinesia Agents
Calcium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Anti-Anxiety Agents
Tranquilizing Agents
Central Nervous System Depressants
Psychotropic Drugs
Excitatory Amino Acid Antagonists
Excitatory Amino Acid Agents
Neurotransmitter Agents processed this record on April 27, 2017