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

Primary Purpose

Diabetic Peripheral Neuropathy

Status
Terminated
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Tanezumab
placebo
Sponsored by
Pfizer
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Diabetic Peripheral Neuropathy focused on measuring diabetic peripheral neuropathy, tanezumab, diabetic neuropathies, diabetic polyneuropathy, diabetic neuropathy painful

Eligibility Criteria

18 Years - 99 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

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 bipoar 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.

Sites / Locations

  • Alabama Orthopaedic Clinic
  • Coastal Clinical Research, Inc.
  • Dedicated Clinical Research
  • Valley Radiology, Ltd.
  • Dedicated Clinical Research
  • Clinical Trials, Inc.
  • Anaheim Hills MRI Holdings, Inc
  • Fullerton Neurology and Headache Center
  • NervePro Medical Corporation
  • United Medical Imaging Healthcare (X-Ray Only)
  • Coordinated Clinical Research
  • LabCorp (Draw blood only)
  • Alpine Clinical Research Center, Inc
  • JEM Research Institute
  • Medical Specialists of the Palm Beaches
  • Bradenton Research Center, Inc.
  • Innovative Research of West Florida, Inc.
  • SJS Clinical Research, Inc.
  • White Wilson Medical Center
  • MD Clinical
  • Laszlo J. Mate, MD
  • Palm Beach Neurological Center, Advanced Research Consultants, Inc.
  • Neurology Clinical Research, Inc.
  • Neurology Specialists of Decatur Research Center
  • Neurology Specialists of Decatur
  • Allied Physicians Inc d/b/a Fort Wayne Neurology
  • American Health Network of IN, LLC
  • Radiology Department, American Health Network
  • Lee Research Institute
  • Mid-Atlantic Medical Research Centers
  • Michigan Head Pain and Neurological Institute
  • Ozarks Community Hospital Christian County Clinic
  • Clinvest/A Division of Banyan Group, Inc.
  • Montana Neuroscience Institute Foundation
  • Asheville Neurology Specialists, PA
  • Joel Vandersluis, MD
  • Hometown Urgent Care and Research
  • Neurology and Neuroscience Center of Ohio
  • Lynn Health Science Institute
  • Mark A. Fisher M.D. -Private Practice
  • Westmoreland Neurology Associates, Inc
  • The Neurology and Pain Clinic
  • Centex Research/Pineloch Medical Center
  • Paragon Research Center, LLC
  • Innovative Clinical Trials
  • Daniel B. Vine, MD
  • Wasatch Clinical Research
  • RGL Medical Services

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

Tanezumab

Placebo

Arm Description

Outcomes

Primary Outcome Measures

Change From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 16
Participants assessed their DPN pain during the past 24 hours using 11-point Numeric Rating Scale (NRS) with score range of 0 (no pain) to 10 ( worst possible pain). Baseline score was calculated as the mean of the average pain scores over the 3 days in the initial pain assessment period. The Week 16 value was the average DPN Pain score calculated for the 7 days prior to and including Day 113 (Week 16).

Secondary Outcome Measures

Change From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 1, 2, 4, 6, 8, and 12
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain. Change: score at observation minus score at baseline.
Number of Participants With Cumulative Reduction From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 16
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain.
Number of Participants With at Least 30 Percent (%), 50%, 70% and 90% Reduction From Baseline in Average DPN Pain Score: Last Observation Carried Forward (LOCF)
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain. Change: score at observation minus score at baseline.
Change From Baseline in Brief Pain Inventory-Short Form (BPI-sf) Worst and Average Pain Score at Week 8 and 16
BPI-sf (Brief Pain Inventory-short form) is a participant-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consists of 5 questions. Questions 1-4 measure the magnitude of pain at its worst and least (in the last 24 hours), average, and right now. Responses are provided by the participant on an 11-point numeric rating scale with anchors at 0 (No Pain) and 10 (Pain as bad as you can imagine). Question 5 consists of 7 item subsets (A to G) which measure the level of interference of pain on daily functions. Responses are given on an 11-point numeric rating scale with anchors at 0 (Does not interfere) and 10 (Completely interferes). The instrument is scored by item and by dimension, with lower scores indicating less pain or pain interference.
Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Total Score at Week 8 and 16: Last Observation Carried Forward (LOCF)
Participant rated questionnaire to evaluate different symptoms of neuropathic pain (burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) during past 24-hour period and included 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generated a score in each of the relevant dimensions and a total score of 0-100. Higher score indicated a greater intensity of pain.
Change From Baseline in BPI-sf Pain Interference Index and Pain Interference Score for General Activity, Walking Ability, Sleep and Normal Work at Week 8 and Week 16
BPI-sf (Brief Pain Inventory-short form) is a participant-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions 1-4 measure the magnitude of pain at its worst and least (in the last 24 hours), average, and right now. Responses were provided by the participant on an 11-point numeric rating scale with anchors at 0 (No Pain) and 10 (Pain as bad as you can imagine). Question 5 consisted of 7 item subsets (A to G) as being pain interference with general activity; mood; walking ability; normal work (outside home and housework); relations with other people; sleep and enjoyment of life. Responses were given on an 11-point numeric rating scale with anchors at 0 (Does not interfere) and 10 (Completely interferes). The instrument was scored by item and by dimension, with lower scores indicated less pain or pain interference.
Change From Baseline in Patient's Global Assessment (PGA) of Diabetic Peripheral Neuropathy (DPN) at Week 4, 8, 12 and 16
The PGA is a global evaluation that utilizes a 5-point Likert scale with a score of 1 being the best (very good: Asymptomatic and no limitation of normal activities) and a score of 5 being the worst (very poor: Very severe symptoms which are intolerable and inability to carry out all normal activities).
Number of Participants With Improvement of at Least 2 Points in Patient's Global Assessment (PGA) of Diabetic Peripheral Neuropathy
The PGA is a global evaluation that utilizes a 5-point Likert scale with a score of 1 being the best (very good: Asymptomatic and no limitation of normal activities) and a score of 5 being the worst (very poor: Very severe symptoms which are intolerable and inability to carry out all normal activities).
Change From Baseline in Euro Quality of Life (EQ-5D)- Health State Profile Utility at Week 16
EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single utility score. Health State Profile component assesses level of current health for 5 domains: mobility, self-care, usual activities, pain or discomfort, and anxiety or depression; 1 indicates better health state (no problems); 3 indicates worst health state (extreme problems). Scoring formula developed by Euro Quality of life group assigns a utility value for each domain in the profile. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicated a better health state.
Time to Discontinuation Due to Lack of Efficacy
Number of Participants Who Used Rescue Medication
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Days Per Week of Rescue Medication Usage
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Amount of Rescue Medication Taken
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Number of Participants With Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 112 days after last dose that were absent before treatment or that worsened relative to pretreatment state.
Number of Participants With Clinically Significant Laboratory Values
Criteria:Hemoglobin(Hgb),hematocrit,red blood cell(RBC)count:less than(<)0.8*lower limit of normal(LLN), mean cell Hgb,mean corpuscular volume,mean corpuscular Hgb concentration,mean platelet volume:<0.9*LLNor>1.1*upper limit of normal(ULN),platelet:<0.5*LLN >1.75* ULN, lymphocyte,neutrophil:<0.8*LLN or>1.2*ULN,basophil, eosinophil,monocyte:>1.2*ULN;bilirubin(total, direct,)>1.5*ULN, aspartate and alanine aminotransferase,alkaline phosphatase:> 3.0*ULN;gamma GT>3.0;cholestrol,triglycerides:>1.3*ULN; total protein, albumin:<0.8*LLN or>1.2*ULN ;blood urea nitrogen,creatinine:>1.3*ULN,uric acid>1.2*ULN;sodium <0.95*LLNor>1.05*ULN,potassium,chloride,calcium,bicarbonate, magnesium:<0.9*LLN or >1.1*ULN;phosphate<0.8*LLN or>1.2*ULN;glucose <0.6*LLNor>1.5*ULN,glycosylated Hgb>1.3*ULN,creatine kinase >2.0*ULN;urine(specific gravity<1.003or>1.030;pH <4.8or>8;glucose,ketone,proteins,blood/Hgb,bilirubin,nitrite>=1;WBC, RBC≥20/HPF;hyaline cast≥1;epithelial cell>=6;bacteria >1);serum pregnancy >=1.
Number of Participants With Clinically Significant Electrocardiogram (ECG) Abnormalities
Following parameters were analyzed for ECG abnormality: PR interval, QRS interval, QT interval, QT interval corrected using the Fridericia's formula (QTcF), QT interval corrected using the Bazett's formula (QTcB), RR interval and heart rate (HR). Number of participants with clinically significant abnormal ECG findings reported as adverse events were presented.
Number of Participants With Clinically Significant Change From Baseline Physical Examination
Physical examination included examination of following sites in addition to general examination: abdomen, ears, extremities, eyes, head, heart, musculoskeletal, neck, nose, skin, throat, lungs and thyroid.
Number of Participants With Clinically Significant Vital Signs Abnormalities
Following parameters were analyzed for examination of vital signs: body temperature, blood pressure, pulse rate and respiratory rate. Number of participants with clinically significant abnormality in vital signs reported as adverse events were presented.
Number of Participants With Anti Drug Antibody (ADA) for Tanezumab
Human serum ADA samples were analyzed for the presence or absence of anti-tanezumab antibodies by using the semi-quantitative enzyme-linked immunosorbent assay (ELISA).
Change From Baseline in Neuropathy Impairment Score (NIS) at Weeks 2, 4, 8, 12, 16 and 24: Last Observation Carried Forward (LOCF)
Neurologic examination assessed strength of groups of muscles of the head and neck, upper limbs and lower limbs, deep tendon reflexes and sensation (tactile, vibration, joint position sense and pin prick) of index fingers and great toes in order to complete the NIS. The NIS consists of 74 items (37 items assessed on the right side and 37 items assessed on the left side). Each item was rated on a scale of either 0 to 4 or 0 to 2 points, which were summed to calculate a total score. The NIS total score ranges from 0 to 244, where higher scores represent greater impairment.
Change From Baseline Neuropathy Symptoms and Change (NSC) Score at Week 16: Last Observation Carried Forward (LOCF)
The NSC (Neuropathy symptoms and change) is a standardized instrument and has been used to evaluate participants for number of symptoms of peripheral neuropathy. The NSC score included 38 (muscle weakness, Q1-19; sensation, Q20-29; and autonomic symptoms, Q30-38) symptom questions where the participants indicated experiencing the number of symptoms (to any severity). The score ranged from 0 to 38, with higher scores indicated more symptoms. The change score is the participant's comparison of the symptoms at last evaluation to the symptoms at onset. A change from baseline > 0 indicated increased neuropathy.
Change From Baseline in Quantitative Sensory Testing (QST) at Week 16
QST was performed on dorsum of foot and anterior thigh (at midpoint of a line from inguinal crease to midpoint of patella) to assess and quantify sensory function in lower extremity. Parameters were selected to assess small fiber function such as cooling detection threshold (mainly small diameter myelinated fibers, A delta), heat pain detection threshold (A delta and C fiber functions), and large fiber function via vibration detection threshold. normal deviate scores derived from a normal distribution of a reference population. A standard deviate score of 0 corresponds to 50th percentile of control population. Standard deviate score 1.96 corresponds to 95th percentile of normal distribution and -1.96 corresponds to 5th percentile of normal distribution. A normal deviate score indicated how many standard deviations higher (in case of positive normal deviate score) or lower (in case of negative normal deviate score) participant's value was relative to mean of reference population.
Change From Baseline in the Average Density of Protein Gene Product (PGP) 9.5-Positive Intraepidermal Nerve Fiber (IENF) at Week 16: LOCF
IENF density was quantified in 3 millimeter (mm) immunostained skin punch biopsies containing epidermis and superficial dermis to evaluate the amount and morphological appearance of small diameter nerve fibers, both somatic and autonomic, in sensory neuropathies. IENF density was assessed from skin biopsies taken from the distal calves and distal thigh.
Plasma Tanezumab Concentration
Serum Nerve Growth Factor (NGF)
Serum samples were analyzed for determining total NGF concentration. Total NGF was analyzed using a validated, sensitive and specific immunoaffinity enrichment liquid chromatography tandem mass spectrometric (IA/LC/MS/MS) method.

Full Information

First Posted
March 11, 2010
Last Updated
February 22, 2021
Sponsor
Pfizer
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1. Study Identification

Unique Protocol Identification Number
NCT01087203
Brief Title
A Study Of The Analgesic (Pain-Relief) Effects Of Tanezumab In Adult Patients With Diabetic Peripheral Neuropathy
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
Study Type
Interventional

2. Study Status

Record Verification Date
February 2021
Overall Recruitment Status
Terminated
Why Stopped
See termination reason in detailed description.
Study Start Date
March 30, 2010 (Actual)
Primary Completion Date
November 18, 2010 (Actual)
Study Completion Date
July 6, 2011 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Pfizer

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
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.
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.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Diabetic Peripheral Neuropathy
Keywords
diabetic peripheral neuropathy, tanezumab, diabetic neuropathies, diabetic polyneuropathy, diabetic neuropathy painful

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantInvestigator
Allocation
Randomized
Enrollment
73 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Tanezumab
Arm Type
Experimental
Arm Title
Placebo
Arm Type
Placebo Comparator
Intervention Type
Biological
Intervention Name(s)
Tanezumab
Other Intervention Name(s)
PF-04383119
Intervention Description
20 mg subcutaneous injection every 8 weeks x 2 doses (at Baseline and week 8)
Intervention Type
Biological
Intervention Name(s)
placebo
Intervention Description
Placebo to match tanezumab 20 mg subcutaneous injection every 8 weeks x 2 doses (at Baseline and week 8)
Primary Outcome Measure Information:
Title
Change From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 16
Description
Participants assessed their DPN pain during the past 24 hours using 11-point Numeric Rating Scale (NRS) with score range of 0 (no pain) to 10 ( worst possible pain). Baseline score was calculated as the mean of the average pain scores over the 3 days in the initial pain assessment period. The Week 16 value was the average DPN Pain score calculated for the 7 days prior to and including Day 113 (Week 16).
Time Frame
Baseline, Week 16
Secondary Outcome Measure Information:
Title
Change From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 1, 2, 4, 6, 8, and 12
Description
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain. Change: score at observation minus score at baseline.
Time Frame
Baseline, Week 1, 2, 4, 6, 8, 12
Title
Number of Participants With Cumulative Reduction From Baseline in Average Diabetic Peripheral Neuropathy (DPN) Pain Score at Week 16
Description
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain.
Time Frame
Week 16
Title
Number of Participants With at Least 30 Percent (%), 50%, 70% and 90% Reduction From Baseline in Average DPN Pain Score: Last Observation Carried Forward (LOCF)
Description
Participant rated their DPN pain using 11-point NRS with score ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicated greater level of pain. Change: score at observation minus score at baseline.
Time Frame
Week 1, 2, 4, 6, 8, 12, 16
Title
Change From Baseline in Brief Pain Inventory-Short Form (BPI-sf) Worst and Average Pain Score at Week 8 and 16
Description
BPI-sf (Brief Pain Inventory-short form) is a participant-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consists of 5 questions. Questions 1-4 measure the magnitude of pain at its worst and least (in the last 24 hours), average, and right now. Responses are provided by the participant on an 11-point numeric rating scale with anchors at 0 (No Pain) and 10 (Pain as bad as you can imagine). Question 5 consists of 7 item subsets (A to G) which measure the level of interference of pain on daily functions. Responses are given on an 11-point numeric rating scale with anchors at 0 (Does not interfere) and 10 (Completely interferes). The instrument is scored by item and by dimension, with lower scores indicating less pain or pain interference.
Time Frame
Baseline, Week 8, 16
Title
Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Total Score at Week 8 and 16: Last Observation Carried Forward (LOCF)
Description
Participant rated questionnaire to evaluate different symptoms of neuropathic pain (burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) during past 24-hour period and included 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generated a score in each of the relevant dimensions and a total score of 0-100. Higher score indicated a greater intensity of pain.
Time Frame
Baseline, Week 8, 16
Title
Change From Baseline in BPI-sf Pain Interference Index and Pain Interference Score for General Activity, Walking Ability, Sleep and Normal Work at Week 8 and Week 16
Description
BPI-sf (Brief Pain Inventory-short form) is a participant-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions 1-4 measure the magnitude of pain at its worst and least (in the last 24 hours), average, and right now. Responses were provided by the participant on an 11-point numeric rating scale with anchors at 0 (No Pain) and 10 (Pain as bad as you can imagine). Question 5 consisted of 7 item subsets (A to G) as being pain interference with general activity; mood; walking ability; normal work (outside home and housework); relations with other people; sleep and enjoyment of life. Responses were given on an 11-point numeric rating scale with anchors at 0 (Does not interfere) and 10 (Completely interferes). The instrument was scored by item and by dimension, with lower scores indicated less pain or pain interference.
Time Frame
Baseline, Week 8, 16
Title
Change From Baseline in Patient's Global Assessment (PGA) of Diabetic Peripheral Neuropathy (DPN) at Week 4, 8, 12 and 16
Description
The PGA is a global evaluation that utilizes a 5-point Likert scale with a score of 1 being the best (very good: Asymptomatic and no limitation of normal activities) and a score of 5 being the worst (very poor: Very severe symptoms which are intolerable and inability to carry out all normal activities).
Time Frame
Baseline, Week 4, 8, 12, 16
Title
Number of Participants With Improvement of at Least 2 Points in Patient's Global Assessment (PGA) of Diabetic Peripheral Neuropathy
Description
The PGA is a global evaluation that utilizes a 5-point Likert scale with a score of 1 being the best (very good: Asymptomatic and no limitation of normal activities) and a score of 5 being the worst (very poor: Very severe symptoms which are intolerable and inability to carry out all normal activities).
Time Frame
Week 4, 8, 12, 16
Title
Change From Baseline in Euro Quality of Life (EQ-5D)- Health State Profile Utility at Week 16
Description
EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single utility score. Health State Profile component assesses level of current health for 5 domains: mobility, self-care, usual activities, pain or discomfort, and anxiety or depression; 1 indicates better health state (no problems); 3 indicates worst health state (extreme problems). Scoring formula developed by Euro Quality of life group assigns a utility value for each domain in the profile. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicated a better health state.
Time Frame
Baseline, Week 16
Title
Time to Discontinuation Due to Lack of Efficacy
Time Frame
Baseline up to Week 16
Title
Number of Participants Who Used Rescue Medication
Description
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Time Frame
Week 1, 2, 4, 6, 8, 12, 16
Title
Days Per Week of Rescue Medication Usage
Description
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Time Frame
Week 1, 2, 4, 6, 8, 12, 16
Title
Amount of Rescue Medication Taken
Description
Participants who did not experience adequate pain relief for DPN pain during the treatment period took acetaminophen 3000 mg/day up to 3 days/week as rescue medication.
Time Frame
Week 1, 2, 4, 6, 8, 12, 16
Title
Number of Participants With Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
Description
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 112 days after last dose that were absent before treatment or that worsened relative to pretreatment state.
Time Frame
Baseline up to 112 days after last dose of study treatment (up to 169 days)
Title
Number of Participants With Clinically Significant Laboratory Values
Description
Criteria:Hemoglobin(Hgb),hematocrit,red blood cell(RBC)count:less than(<)0.8*lower limit of normal(LLN), mean cell Hgb,mean corpuscular volume,mean corpuscular Hgb concentration,mean platelet volume:<0.9*LLNor>1.1*upper limit of normal(ULN),platelet:<0.5*LLN >1.75* ULN, lymphocyte,neutrophil:<0.8*LLN or>1.2*ULN,basophil, eosinophil,monocyte:>1.2*ULN;bilirubin(total, direct,)>1.5*ULN, aspartate and alanine aminotransferase,alkaline phosphatase:> 3.0*ULN;gamma GT>3.0;cholestrol,triglycerides:>1.3*ULN; total protein, albumin:<0.8*LLN or>1.2*ULN ;blood urea nitrogen,creatinine:>1.3*ULN,uric acid>1.2*ULN;sodium <0.95*LLNor>1.05*ULN,potassium,chloride,calcium,bicarbonate, magnesium:<0.9*LLN or >1.1*ULN;phosphate<0.8*LLN or>1.2*ULN;glucose <0.6*LLNor>1.5*ULN,glycosylated Hgb>1.3*ULN,creatine kinase >2.0*ULN;urine(specific gravity<1.003or>1.030;pH <4.8or>8;glucose,ketone,proteins,blood/Hgb,bilirubin,nitrite>=1;WBC, RBC≥20/HPF;hyaline cast≥1;epithelial cell>=6;bacteria >1);serum pregnancy >=1.
Time Frame
Baseline up to Week 24
Title
Number of Participants With Clinically Significant Electrocardiogram (ECG) Abnormalities
Description
Following parameters were analyzed for ECG abnormality: PR interval, QRS interval, QT interval, QT interval corrected using the Fridericia's formula (QTcF), QT interval corrected using the Bazett's formula (QTcB), RR interval and heart rate (HR). Number of participants with clinically significant abnormal ECG findings reported as adverse events were presented.
Time Frame
Baseline up to Week 24
Title
Number of Participants With Clinically Significant Change From Baseline Physical Examination
Description
Physical examination included examination of following sites in addition to general examination: abdomen, ears, extremities, eyes, head, heart, musculoskeletal, neck, nose, skin, throat, lungs and thyroid.
Time Frame
Baseline up to Week 24
Title
Number of Participants With Clinically Significant Vital Signs Abnormalities
Description
Following parameters were analyzed for examination of vital signs: body temperature, blood pressure, pulse rate and respiratory rate. Number of participants with clinically significant abnormality in vital signs reported as adverse events were presented.
Time Frame
Baseline up to Week 24
Title
Number of Participants With Anti Drug Antibody (ADA) for Tanezumab
Description
Human serum ADA samples were analyzed for the presence or absence of anti-tanezumab antibodies by using the semi-quantitative enzyme-linked immunosorbent assay (ELISA).
Time Frame
Baseline, Week 8, 16, 24
Title
Change From Baseline in Neuropathy Impairment Score (NIS) at Weeks 2, 4, 8, 12, 16 and 24: Last Observation Carried Forward (LOCF)
Description
Neurologic examination assessed strength of groups of muscles of the head and neck, upper limbs and lower limbs, deep tendon reflexes and sensation (tactile, vibration, joint position sense and pin prick) of index fingers and great toes in order to complete the NIS. The NIS consists of 74 items (37 items assessed on the right side and 37 items assessed on the left side). Each item was rated on a scale of either 0 to 4 or 0 to 2 points, which were summed to calculate a total score. The NIS total score ranges from 0 to 244, where higher scores represent greater impairment.
Time Frame
Baseline, Weeks 2, 4, 8, 12, 16 and 24
Title
Change From Baseline Neuropathy Symptoms and Change (NSC) Score at Week 16: Last Observation Carried Forward (LOCF)
Description
The NSC (Neuropathy symptoms and change) is a standardized instrument and has been used to evaluate participants for number of symptoms of peripheral neuropathy. The NSC score included 38 (muscle weakness, Q1-19; sensation, Q20-29; and autonomic symptoms, Q30-38) symptom questions where the participants indicated experiencing the number of symptoms (to any severity). The score ranged from 0 to 38, with higher scores indicated more symptoms. The change score is the participant's comparison of the symptoms at last evaluation to the symptoms at onset. A change from baseline > 0 indicated increased neuropathy.
Time Frame
Baseline, Week 16
Title
Change From Baseline in Quantitative Sensory Testing (QST) at Week 16
Description
QST was performed on dorsum of foot and anterior thigh (at midpoint of a line from inguinal crease to midpoint of patella) to assess and quantify sensory function in lower extremity. Parameters were selected to assess small fiber function such as cooling detection threshold (mainly small diameter myelinated fibers, A delta), heat pain detection threshold (A delta and C fiber functions), and large fiber function via vibration detection threshold. normal deviate scores derived from a normal distribution of a reference population. A standard deviate score of 0 corresponds to 50th percentile of control population. Standard deviate score 1.96 corresponds to 95th percentile of normal distribution and -1.96 corresponds to 5th percentile of normal distribution. A normal deviate score indicated how many standard deviations higher (in case of positive normal deviate score) or lower (in case of negative normal deviate score) participant's value was relative to mean of reference population.
Time Frame
Baseline, Week 16
Title
Change From Baseline in the Average Density of Protein Gene Product (PGP) 9.5-Positive Intraepidermal Nerve Fiber (IENF) at Week 16: LOCF
Description
IENF density was quantified in 3 millimeter (mm) immunostained skin punch biopsies containing epidermis and superficial dermis to evaluate the amount and morphological appearance of small diameter nerve fibers, both somatic and autonomic, in sensory neuropathies. IENF density was assessed from skin biopsies taken from the distal calves and distal thigh.
Time Frame
Baseline, Week 16
Title
Plasma Tanezumab Concentration
Time Frame
Baseline(Day 1), Week 2, 4, 8, 12, 16, 24
Title
Serum Nerve Growth Factor (NGF)
Description
Serum samples were analyzed for determining total NGF concentration. Total NGF was analyzed using a validated, sensitive and specific immunoaffinity enrichment liquid chromatography tandem mass spectrometric (IA/LC/MS/MS) method.
Time Frame
Day 1, Week 8, 16, 24
Other Pre-specified Outcome Measures:
Title
Number of Participants With Subcutaneous Doses of Study Medication
Description
Number of participants are reported based on the maximum number of Subcutaneous doses of either tanezumab or placebo received.
Time Frame
Day 1 up to Week 8

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
99 Years
Accepts Healthy Volunteers
No
Eligibility 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 bipoar 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.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Pfizer CT.gov Call Center
Organizational Affiliation
Pfizer
Official's Role
Study Director
Facility Information:
Facility Name
Alabama Orthopaedic Clinic
City
Mobile
State/Province
Alabama
ZIP/Postal Code
36608
Country
United States
Facility Name
Coastal Clinical Research, Inc.
City
Mobile
State/Province
Alabama
ZIP/Postal Code
36608
Country
United States
Facility Name
Dedicated Clinical Research
City
Goodyear
State/Province
Arizona
ZIP/Postal Code
85395
Country
United States
Facility Name
Valley Radiology, Ltd.
City
Goodyear
State/Province
Arizona
ZIP/Postal Code
85395
Country
United States
Facility Name
Dedicated Clinical Research
City
Litchfield Park
State/Province
Arizona
ZIP/Postal Code
85340
Country
United States
Facility Name
Clinical Trials, Inc.
City
Little Rock
State/Province
Arkansas
ZIP/Postal Code
72205
Country
United States
Facility Name
Anaheim Hills MRI Holdings, Inc
City
Anaheim Hills
State/Province
California
ZIP/Postal Code
92807
Country
United States
Facility Name
Fullerton Neurology and Headache Center
City
Fullerton
State/Province
California
ZIP/Postal Code
92835
Country
United States
Facility Name
NervePro Medical Corporation
City
Irvine
State/Province
California
ZIP/Postal Code
92618
Country
United States
Facility Name
United Medical Imaging Healthcare (X-Ray Only)
City
Irvine
State/Province
California
ZIP/Postal Code
92618
Country
United States
Facility Name
Coordinated Clinical Research
City
La Jolla
State/Province
California
ZIP/Postal Code
92037
Country
United States
Facility Name
LabCorp (Draw blood only)
City
La Jolla
State/Province
California
ZIP/Postal Code
92037
Country
United States
Facility Name
Alpine Clinical Research Center, Inc
City
Boulder
State/Province
Colorado
ZIP/Postal Code
80304
Country
United States
Facility Name
JEM Research Institute
City
Atlantis
State/Province
Florida
ZIP/Postal Code
33462
Country
United States
Facility Name
Medical Specialists of the Palm Beaches
City
Atlantis
State/Province
Florida
ZIP/Postal Code
33462
Country
United States
Facility Name
Bradenton Research Center, Inc.
City
Bradenton
State/Province
Florida
ZIP/Postal Code
34205
Country
United States
Facility Name
Innovative Research of West Florida, Inc.
City
Clearwater
State/Province
Florida
ZIP/Postal Code
33756
Country
United States
Facility Name
SJS Clinical Research, Inc.
City
Destin
State/Province
Florida
ZIP/Postal Code
32541
Country
United States
Facility Name
White Wilson Medical Center
City
Fort Walton Beach
State/Province
Florida
ZIP/Postal Code
32547
Country
United States
Facility Name
MD Clinical
City
Hallandale Beach
State/Province
Florida
ZIP/Postal Code
33009
Country
United States
Facility Name
Laszlo J. Mate, MD
City
North Palm Beach
State/Province
Florida
ZIP/Postal Code
33408
Country
United States
Facility Name
Palm Beach Neurological Center, Advanced Research Consultants, Inc.
City
Palm Beach Gardens
State/Province
Florida
ZIP/Postal Code
33418
Country
United States
Facility Name
Neurology Clinical Research, Inc.
City
Sunrise
State/Province
Florida
ZIP/Postal Code
33351
Country
United States
Facility Name
Neurology Specialists of Decatur Research Center
City
Decatur
State/Province
Georgia
ZIP/Postal Code
30033
Country
United States
Facility Name
Neurology Specialists of Decatur
City
Decatur
State/Province
Georgia
ZIP/Postal Code
30033
Country
United States
Facility Name
Allied Physicians Inc d/b/a Fort Wayne Neurology
City
Fort Wayne
State/Province
Indiana
ZIP/Postal Code
46805
Country
United States
Facility Name
American Health Network of IN, LLC
City
Greenfield
State/Province
Indiana
ZIP/Postal Code
46140-2834
Country
United States
Facility Name
Radiology Department, American Health Network
City
Greenfield
State/Province
Indiana
ZIP/Postal Code
46140-2834
Country
United States
Facility Name
Lee Research Institute
City
Lenexa
State/Province
Kansas
ZIP/Postal Code
66215
Country
United States
Facility Name
Mid-Atlantic Medical Research Centers
City
Hollywood
State/Province
Maryland
ZIP/Postal Code
20636
Country
United States
Facility Name
Michigan Head Pain and Neurological Institute
City
Ann Arbor
State/Province
Michigan
ZIP/Postal Code
48104
Country
United States
Facility Name
Ozarks Community Hospital Christian County Clinic
City
Nixa
State/Province
Missouri
ZIP/Postal Code
65714
Country
United States
Facility Name
Clinvest/A Division of Banyan Group, Inc.
City
Springfield
State/Province
Missouri
ZIP/Postal Code
65807
Country
United States
Facility Name
Montana Neuroscience Institute Foundation
City
Missoula
State/Province
Montana
ZIP/Postal Code
59802
Country
United States
Facility Name
Asheville Neurology Specialists, PA
City
Asheville
State/Province
North Carolina
ZIP/Postal Code
28806
Country
United States
Facility Name
Joel Vandersluis, MD
City
Dayton
State/Province
Ohio
ZIP/Postal Code
45417
Country
United States
Facility Name
Hometown Urgent Care and Research
City
Dayton
State/Province
Ohio
ZIP/Postal Code
45432
Country
United States
Facility Name
Neurology and Neuroscience Center of Ohio
City
Toledo
State/Province
Ohio
ZIP/Postal Code
43623
Country
United States
Facility Name
Lynn Health Science Institute
City
Oklahoma City
State/Province
Oklahoma
ZIP/Postal Code
73112
Country
United States
Facility Name
Mark A. Fisher M.D. -Private Practice
City
Oklahoma City
State/Province
Oklahoma
ZIP/Postal Code
73112
Country
United States
Facility Name
Westmoreland Neurology Associates, Inc
City
Greensburg
State/Province
Pennsylvania
ZIP/Postal Code
15601-2234
Country
United States
Facility Name
The Neurology and Pain Clinic
City
Orangeburg
State/Province
South Carolina
ZIP/Postal Code
29118
Country
United States
Facility Name
Centex Research/Pineloch Medical Center
City
Houston
State/Province
Texas
ZIP/Postal Code
77062
Country
United States
Facility Name
Paragon Research Center, LLC
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78205
Country
United States
Facility Name
Innovative Clinical Trials
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78229
Country
United States
Facility Name
Daniel B. Vine, MD
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84102
Country
United States
Facility Name
Wasatch Clinical Research
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84107
Country
United States
Facility Name
RGL Medical Services
City
West Jordan
State/Province
Utah
ZIP/Postal Code
84084
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.
IPD Sharing URL
https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests
Citations:
PubMed Identifier
25594611
Citation
Bramson C, Herrmann DN, Carey W, Keller D, Brown MT, West CR, Verburg KM, Dyck PJ. Exploring the role of tanezumab as a novel treatment for the relief of neuropathic pain. Pain Med. 2015 Jun;16(6):1163-76. doi: 10.1111/pme.12677. Epub 2015 Jan 16.
Results Reference
derived
Links:
URL
https://trialinfoemail.pfizer.com/pages/landing.aspx?StudyID=A4091031&StudyName=A%20Study%20Of%20The%20Analgesic%20%28Pain-Relief%29%20Effects%20Of%20Tanezumab%20In%20Adult%20Patients%20With%20Diabetic%20Peripheral%20Neuropathy%20
Description
To obtain contact information for a study center near you, click here.

Learn more about this trial

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

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