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Gabapentin and Oxcarbazepine for Chronic Neuropathic Pain in Children and Adolescents: A Clinical Effectiveness Study

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Boston Children's Hospital

Status and phase

Begins enrollment this month
Phase 3

Conditions

Pediatric Chronic Neuropathic Pain

Treatments

Other: Placebo
Drug: Oxcarbazepine
Drug: Gabapentin

Study type

Interventional

Funder types

Other

Identifiers

NCT02219373
P00008001

Details and patient eligibility

About

Given the widespread use of anticonvulsants in the pediatric chronic pain population and the absence of scientific data supporting their use, the investigators propose a randomized, double blind, two group parallel design in which a broad group of children and adolescents with chronic neuropathic pain would be randomized to receive either Gabapentin or Oxcarbazepine.

The Primary Aim of the Study is to assess the frequencies of successful treatment of pediatric patients with neuropathic pain treated with either Gabapentin or Oxcarbazepine.

The Primary Hypotheses are as follows:

Hypothesis I: Both Gabapentin and Oxcarbazepine will result in significant reduction in pain scores when compared to each patient's baseline.

Hypothesis II: Patients who continue on active drug (Gabapentin or Oxcarbazepine) during the second phase of the trial will report greater pain reduction relative to baseline than patients who are randomized onto placebo at this randomization point.

Secondary Aims of the Study are to compare groups treated initially with Gabapentin or Oxcarbazepine with regard to reduction in pain scores (both at rest and with evoked maneuvers), functional disability scores, tolerability, and measures of mood and cognitive functioning.

Secondary Hypotheses are that Gabapentin and Oxcarbazepine differ in their effects on:

  1. Pain scores at rest and with evoked maneuvers
  2. Functional disability scores
  3. Tolerability (frequencies of side-effects)
  4. Depression and anxiety scales
  5. Neuropsychological measures of cognitive processing speed, working memory, and attention.

Enrollment

60 estimated patients

Sex

All

Ages

8 to 18 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Patients between the ages of 8 and 18 at the time of the study with history of chronic (lasting ≥ 4 weeks) neuropathic pain that includes a known injury to a peripheral nerve and/or a pattern of pain responses that includes allodynia, burning, paresthesias or dysesthesias will be included in this study, provided that informed consent has been given by parents.
  2. Patient's whose pain rates between moderate to severe at the time of inclusion (ranging from 4-10 in a numeric pain rating scale)
  3. Eligible diagnoses include Complex Regional Pain Syndrome, Fibromyalgia, Lumbar Radiculopathy, Spinal Cord Injury, Erythromelalgia, Small Fiber Neuropathies, Traumatic or Post-surgical Peripheral Nerve or Plexus Injuries, and Extremity Pain with severe pain to light touch (allodynia).
  4. Child has age-appropriate spoken and written knowledge of English.
  5. Parent may be able to utilize an interpreter if need be.

Exclusion criteria

  1. Unstable psychiatric illness (suicidal ideation, disorganized behavior)
  2. Uncontrolled Seizure disorder
  3. Chronic Headaches only
  4. Abdominal Pain only
  5. Prior experience with anticonvulsants for pain treatment.
  6. Patients with Syndrome of Inappropriate Secretion of Antidiuretic Hormone

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Crossover Assignment

Masking

Quadruple Blind

60 participants in 3 patient groups, including a placebo group

Gabapentin
Experimental group
Treatment:
Drug: Gabapentin
Other: Placebo
Oxcarbazepine
Experimental group
Treatment:
Drug: Oxcarbazepine
Other: Placebo
Placebo
Placebo Comparator group
Description:
Patients taking placebo will have placebo dose escalated using similar frequency, periods of time, and volumes as those for the active drugs.
Treatment:
Drug: Gabapentin
Drug: Oxcarbazepine
Other: Placebo

Trial contacts and locations

1

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Central trial contact

Kimberly Lobo, MPH; Monique Ribeiro, MD

Data sourced from clinicaltrials.gov

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