A Study Of The Analgesic (Pain-Relief) Effects Of Tanezumab In Adult Patients With Diabetic Peripheral Neuropathy - Full Text View

Purpose

The purpose of this study is to determine the effectiveness and safety of the investigational drug, tanezumab, in adult patients with painful diabetic peripheral neuropathy.

Condition	Intervention	Phase
Diabetic Peripheral Neuropathy	Biological: Tanezumab Biological: placebo	Phase 2


Study Type:	Interventional
Study Design:	Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Double Blind (Subject, Investigator) Primary Purpose: Treatment
Official Title:	A Phase 2 Randomized, Double-Blind, Placebo-Controlled, Multicenter, Parallel Group, Proof Of Concept Study Of The Analgesic Effects Of Tanezumab In Adult Patients With Diabetic Peripheral Neuropathy

Resource links provided by NLM:

MedlinePlus related topics: Peripheral Nerve Disorders

U.S. FDA Resources

Further study details as provided by Pfizer:

Primary Outcome Measures:

Change from Baseline to Week 16 in the average Diabetic Peripheral Neuropathy (DPN) pain as measured by an 11-point Numeric Rating Scale (NRS) for tanezumab vs. placebo treatment. [ Time Frame: Baseline, Wk 16 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:

Change from Baseline to Weeks 1, 2, 4, 6, 8, and 12 in the average DPN pain NRS score derived from the patient daily diary. [ Time Frame: Baseline, Wks 2, 4, 6, 8 & 12 ] [ Designated as safety issue: No ]
Cumulative distribution of percent change from Baseline in the average DPN pain NRS score to Week 16. [ Time Frame: Baseline & Wk 16 ] [ Designated as safety issue: No ]
Response as defined by a ≥30%, ≥50%, ≥70% and a ≥90% reduction from Baseline in the average DPN pain NRS score derived from the patient daily diary at Weeks 1, 2, 4, 6, 8,12 and 16. [ Time Frame: Baseline, Wks 1, 2, 4, 6, 8, 12, & 16 ] [ Designated as safety issue: No ]
Change from Baseline to Weeks 8 and 16 in the Brief Pain Inventory-short form (BPI-sf) scores. [ Time Frame: Baseline, Wks 8 & 16 ] [ Designated as safety issue: No ]
Change from Baseline to Weeks 8 and 16 in the Neuropathic Pain Symptom Inventory (NPSI). [ Time Frame: Baseline, Wks 8 & 16 ] [ Designated as safety issue: No ]
Change from Baseline to Weeks 4, 8, 12 and 16 in Patient's Global Assessment of Diabetic Peripheral Neuropathy. [ Time Frame: Baseline, Wks 8 & 16 ] [ Designated as safety issue: No ]
Treatment Response: Improvement of ≥2 points in Patient's Global Assessment of Diabetic Peripheral Neuropathy at Weeks 4, 8, 12 and 16. [ Time Frame: Baseline, Wks 4, 8, 12 & 16 ] [ Designated as safety issue: No ]
Change from Baseline to Week 16 in the EuroQol (EQ-5D) Health Questionnaire. [ Time Frame: Baseline & Wk 16 ] [ Designated as safety issue: No ]
Time to discontinuation due to lack of efficacy. [ Time Frame: Time to discontinuation ] [ Designated as safety issue: No ]
Usage of Rescue Medication. [ Time Frame: Wks 1, 2, 4, 6, 8, 12, & 16 ] [ Designated as safety issue: No ]
Adverse events. [ Time Frame: Baseline, Wks 2, 4, 6, 8, 12, 16 & 24 ] [ Designated as safety issue: Yes ]
Safety laboratory testing (chemistry, hematology, urinalysis). [ Time Frame: Baseline, Wks 4, 8, 16, & 24 ] [ Designated as safety issue: Yes ]
Single Electrocardiogram (ECG) 12-lead. [ Time Frame: Baseline, Wks 2, 4, 6, 8, 12, 16, & 24 ] [ Designated as safety issue: No ]
Physical examinations. [ Time Frame: Wks 16 & 24 ] [ Designated as safety issue: No ]
Vital signs. [ Time Frame: Baseline, Wks 2, 4, 6, 8, 12, 16 & 24 ] [ Designated as safety issue: Yes ]
Anti drug antibody (ADA): serum samples collected predose on Day 1 (Baseline), predose at Week 8 (trough sample), Weeks 16 and 24 for assessment of immunogenicity. [ Time Frame: Baseline, Wks 8, 16 & 24 ] [ Designated as safety issue: No ]
Neurological exam. [ Time Frame: Baseline, Wks 2, 4, 6, 8, 12, 16 & 24 ] [ Designated as safety issue: No ]
Change in the Neuropathy Symptoms and Change (NSC) score from Baseline to Week 16. [ Time Frame: Baseline & Wk 16 ] [ Designated as safety issue: No ]
Change in Quantitative Sensory Testing (QST) in leg from Baseline to Week 16. [ Time Frame: Baseline & Wk 16 ] [ Designated as safety issue: No ]
Change in density of nerve fibers in the leg from Baseline to Week 16. [ Time Frame: Baseline & Wk 16 ] [ Designated as safety issue: No ]
Plasma tanezumab samples predose on Day 1 (Baseline), Weeks 2, 4, predose at Week 8 (trough sample), Weeks 12, 16 and 24 to characterize tanezumab pharmacokinetics in patients with DPN. [ Time Frame: Baseline, Wks 2, 4, 8, 12, 16 & 24 ] [ Designated as safety issue: No ]
Serum nerve growth factor (NGF) samples predose on Day 1 Baseline), predose at Week 8 (trough sample), Weeks 16 and 24 for pharmacodynamic analysis. [ Time Frame: Baseline, Wks 8, 16, & 24 ] [ Designated as safety issue: No ]


Enrollment:	73
Study Start Date:	March 2010
Study Completion Date:	November 2010
Primary Completion Date:	November 2010 (Final data collection date for primary outcome measure)

Arms	Assigned Interventions
Experimental: Tanezumab	Biological: Tanezumab 20 mg subcutaneous injection every 8 weeks x 2 doses (at Baseline and week 8) Other Name: PF-04383119
Placebo Comparator: Placebo	Biological: placebo Placebo to match tanezumab 20 mg subcutaneous injection every 8 weeks x 2 doses (at Baseline and week 8)

Detailed Description:

This study was terminated on 18 November 2010 following a US FDA clinical hold for the tanezumab diabetic peripheral neuropathy clinical study which halted dosing and enrollment of patients on 19 July 2010 for potential safety issues.

Eligibility


Ages Eligible for Study:	18 Years and older (Adult, Senior)
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

Diagnosis of diabetes mellitus (high blood sugar) with HbA1c levels of ≤11% at Screening, and on a stable anti-diabetic medication regimen for the 30 days prior to randomization.
Diagnosis of diabetic peripheral neuropathy pain in the legs or feet with decreased sensation in the feet or decreased/absent ankle jerk/ reflexes.
Presence of ongoing pain due to diabetic peripheral neuropathy for at least 3 months.
A pain score of greater than or equal to (≥) 4 for from diabetic peripheral neuropathy on the Numerical Rating Scale (NRS), a 11-point scale with 0 meaning no pain and 10 meaning worst pain at Screening.
Be willing to stop all pain medications for diabetic peripheral neuropathy except for the limited use of acetaminophen (Tylenol) or ibuprofen-like (Motrin) medications between Screening and Baseline and not use prohibited pain medications throughout the duration of the study except as permitted by the study guidelines.

Exclusion Criteria:

Painful neuropathies other than diabetic peripheral neuropathy.
Other types of diabetic neuropathies.
Patients with a past history of carpal tunnel syndrome (CTS) with signs or symptoms of CTS in the one year prior to Screening are not eligible for participation.
Patients with fibromyalgia, regional pain caused by lumbar or cervical compression with radiculopathy or other moderate to severe pain.
Patients with a present (current) history of sciatica are not eligible for participation.
The presence of pain conditions that cannot be distinguished from diabetic peripheral neuropathy such as peripheral vascular disease.
Amputations dues to diabetes.
Patient with any clinically significant medical condition or laboratory abnormalities.
History, diagnosis, or signs and symptoms of clinically significant neurological diseases (such as Alzheimer's disease, head trauma, epilepsy or stroke).
History, diagnosis, or signs and symptoms of clinically significant psychiatric diseases (such as bipolar disorder or schizophrenia).
History of known alcohol, analgesic or drug abuse within 2 years of Screening.
Pregnant women, lactating mothers, women suspected of being pregnant, and women who wish to be pregnant during the course of clinical study.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01087203

Show 41 Study Locations

Sponsors and Collaborators

Pfizer

Investigators


Study Director:	Pfizer CT.gov Call Center	Pfizer

More Information

Additional Information:

To obtain contact information for a study center near you, click here. This link exits the ClinicalTrials.gov site


Responsible Party:	Pfizer
ClinicalTrials.gov Identifier:	NCT01087203 History of Changes
Other Study ID Numbers:	A4091031
Study First Received:	March 11, 2010
Last Updated:	August 23, 2012
Health Authority:	United States: Food and Drug Administration

Keywords provided by Pfizer:


diabetic peripheral neuropathy tanezumab diabetic neuropathies diabetic polyneuropathy diabetic neuropathy painful

Additional relevant MeSH terms:


Peripheral Nervous System Diseases Diabetic Neuropathies Neuromuscular Diseases Nervous System Diseases Diabetes Complications Diabetes Mellitus	Endocrine System Diseases Analgesics Sensory System Agents Peripheral Nervous System Agents Physiological Effects of Drugs

ClinicalTrials.gov processed this record on September 28, 2016