Safety and Efficacy Study of ADL5859 in Participants With Neuropathic Pain Associated With Diabetic Peripheral Neuropathy

NCT ID: NCT00603265

Last Updated: 2015-07-01

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

226 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-11-30

Study Completion Date

2008-08-31

Brief Summary

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The purpose of this study is to evaluate the effectiveness of ADL5859 in relieving the pain associated with diabetic peripheral neuropathy (DPN) compared with placebo and duloxetine (a marketed drug approved for the treatment of painful DPN). The pain symptoms of DPN are thought to be due to damage to nerves caused by the diabetes.

Detailed Description

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Participants were permitted to take acetaminophen 650 to 975 mg every 4 to 6 hours (up to a total of 4 grams in 24 hours) as needed for pain relief.

Conditions

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Peripheral Neuropathy Neuropathic Pain

Keywords

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Diabetic Peripheral Neuropathy Neuropathic Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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ADL5859

2 x 50 milligrams (mg) ADL5859 capsules administered orally once in the morning and once in the evening for 28 days

Group Type EXPERIMENTAL

ADL5859

Intervention Type DRUG

Duloxetine

2 x 30 mg duloxetine capsules administered orally once in the morning and 2 placebo capsules filled with lactose administered orally once in the evening for 28 days

Group Type ACTIVE_COMPARATOR

Duloxetine

Intervention Type DRUG

Placebo

Intervention Type DRUG

Placebo

2 placebo capsules filled with lactose administered orally once in the morning and once in the evening for 28 days

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Interventions

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ADL5859

Intervention Type DRUG

Duloxetine

Intervention Type DRUG

Placebo

Intervention Type DRUG

Other Intervention Names

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Cymbalta

Eligibility Criteria

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Inclusion Criteria

* Male and female participants between 18 and 75 years of age, inclusive
* Body weight of at least 45 kilograms (kg)
* Diabetes mellitus (type I or II) that is documented to be under stable glycemic control over a period of at least 3 months, as indicated by a glycosylated hemoglobin (HbgAIC) of less than or equal to 12% and a stable dose of insulin or oral diabetic medication for 90 days prior to starting study medication
* No change in diabetic medications is planned for the duration of the study
* Evidence of symmetrical, bilateral pain in the lower extremities due to diabetic peripheral neuropathy (DPN)
* Presence of daily pain due to DPN for at least 3 months
* Score greater than or equal to 3 on the physical examination portion of the Michigan Neuropathy Screening Instrument (MNSI)
* Average weekly pain score of greater than or equal to 4 on the numeric pain rating scale (NPRS) for symmetrical neuropathic pain in the feet and legs
* For male participants, be surgically sterile or agree to use an appropriate method of contraception
* For female participants of childbearing potential, be surgically sterile or using an intrauterine device, or injectable, transdermal, or combination oral contraceptive deemed highly effective by the Food and Drug Administration (FDA)
* Be willing and able to comply with the protocol requirements
* Be able to understand and willing to provide written informed consent in English

Exclusion Criteria

* Presence of pain conditions that cannot be distinguished from DPN
* Presence of significant renal disease, as indicated by a serum creatinine greater than or equal to 2.0 milligrams per deciliter (mg/dL), or presence of significant hepatic disease
* Have a history of a seizure disorder
* Presence of serious or unstable cardiovascular disease, respiratory disease, hematologic illness, or a psychiatric condition
* History of evidence of symptomatic orthostatic hypotension
* History of a major depressive disorder, generalized anxiety disorder, eating disorder, or substance abuse (including alcohol) within the past year
* History or evidence of mania, bipolar disorder, or psychosis
* History of allergy to acetaminophen or duloxetine
* Score of greater than or equal to 18 on the Beck Depression Inventory II (BDI-II) or score of greater than zero on Item 9 of the BDI-II
* Use of any of the following concomitant medications: fluvoxamine; quinolone antimicrobials (ciprofloxacin and enoxacin); selective serotonin reuptake inhibitors (SSRIs); serotonin norepinephrine reuptake inhibitors (SNRIs); tricyclic antidepressants; opioids; nonsteroidal anti-inflammatory drugs (NSAIDS); anticonvulsants; aspirin (with the exception of low-dose aspirin as cardiovascular prophylaxis); or cytochrome P4503A (CYP3A) and P-glycoprotein transporter inhibitors
* Pregnant, lactating, or plans to become pregnant during the study
* Presence of foot or toe amputation
* Participation in another study with an investigational compound within the previous 30 days prior to study medication administration, or concurrent participation in another clinical study
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Bruce Berger, MD

Role: STUDY_DIRECTOR

Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)

Locations

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Integrated Research Group

Riverside, California, United States

Site Status

Torrance Clinical Research

Torrance, California, United States

Site Status

FPA Clinical Research

Kissimmee, Florida, United States

Site Status

Innovative Research of West Florida, Inc.

Largo, Florida, United States

Site Status

Panhandle Family Care Associates & Emerald Coast Research Grp, Inc.

Marianna, Florida, United States

Site Status

Renstar Medical Research

Ocala, Florida, United States

Site Status

Radiant Research-St.Petersburg

Pinellas Park, Florida, United States

Site Status

Doctor's Research Network

South Miami, Florida, United States

Site Status

Metabolic Research Institute, Inc.

West Palm Beach, Florida, United States

Site Status

Laszlo J. Mate, MD

West Palm Beach, Florida, United States

Site Status

The Pain Treatment Center of the Bluegrass

Lexington, Kentucky, United States

Site Status

Beacon Clinical Research

Brockton, Massachusetts, United States

Site Status

Healthcare Research

Florissant, Missouri, United States

Site Status

Creighton Diabetes Center, Creighton Univ. Sch. of Medicine

Omaha, Nebraska, United States

Site Status

Advanced Biomedical Research of America

Las Vegas, Nevada, United States

Site Status

Clnical Study Center of Asheville

Asheville, North Carolina, United States

Site Status

Radiant Research-Akron

Mogadore, Ohio, United States

Site Status

Neurology & Neuroscience Center of Ohio

Toledo, Ohio, United States

Site Status

Aquilo Research

Yukon, Oklahoma, United States

Site Status

Clinical Research Consultants, Research Department

Medford, Oregon, United States

Site Status

Advanced Regional Center for Clinical Research (Ankle & Foot Care)

Altoona, Pennsylvania, United States

Site Status

Altoona Center for Clinical Research

Duncansville, Pennsylvania, United States

Site Status

Nerve & Muscle Center of Texas

Houston, Texas, United States

Site Status

Invisions Consultants LLC

San Antonio, Texas, United States

Site Status

Diabetes & Glandular Disease Research Associates

San Antonio, Texas, United States

Site Status

S.A.M. Clinical Research Center

San Antonio, Texas, United States

Site Status

Tidewater Integrated Medical Research

Virginia Beach, Virginia, United States

Site Status

Countries

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United States

Other Identifiers

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33CL231

Identifier Type: -

Identifier Source: org_study_id