Trial Outcomes & Findings for Analgesic Efficacy And Safety of Tanezumab Added On To Diclofenac SR In Patients With Osteoarthritis Of The Knee Or Hip (NCT NCT00864097)

Participants with osteoarthritis of knee or hip who were receiving and tolerating stable dose of diclofenac 150 milligram (mg) per day but required additional pain relief were recruited in this study.

After screening, participants received study supplied diclofenac slow release (SR) 75 mg tablet twice daily for a minimum of 14 days prior to randomization.

Analgesic Efficacy And Safety of Tanezumab Added On To Diclofenac SR In Patients With Osteoarthritis Of The Knee Or Hip

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with osteoarthritis (OA). WOMAC pain subscale is a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 5 individual questions, each scored on a numerical rating scale (NRS) of 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Total score range for WOMAC pain subscale score is 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with OA. WOMAC physical function is a 17-item questionnaire used to assess the degree of difficulty experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 17 individual questions, each scored on a NRS of 0 (no difficulty) to 10 (extreme difficulty), where higher scores indicate worse function. Total score range for WOMAC physical function subscale score is 0 (no difficulty) to 10 (extreme difficulty), where higher scores indicate worse function. Physical function refers to participant's ability to move around and perform usual activities of daily living.

Participants answered: "Considering all the ways your osteoarthritis in your index joint (knee/hip) affects you, how are you doing today?" Participants responded by using a 5-point Likert scale, where 1 = very good (asymptomatic and no limitation of normal activities), 2 = good (mild symptoms and no limitation of normal activities), 3 = fair (moderate symptoms and limitation of some normal activities), 4 = poor (severe symptoms and inability to carry out most normal activities), and 5 = very poor (very severe symptoms which are intolerable and inability to carry out all normal activities). Higher score indicated worst condition.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with OA. WOMAC pain subscale is a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 5 individual questions, each scored on a numerical rating scale (NRS) of 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Total score range for WOMAC pain subscale score is 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with OA. WOMAC physical function is a 17-item questionnaire used to assess the degree of difficulty experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 17 individual questions, each scored on a NRS of 0 (no difficulty) to 10 (extreme difficulty), where higher scores indicate worse function. Total score range for WOMAC physical function subscale score is 0 (no difficulty) to 10 (extreme difficulty), where higher scores indicate worse function. Physical function refers to participant's ability to move around and perform usual activities of daily living.

Participants answered: "Considering all the ways your osteoarthritis in your index joint (knee/hip) affects you, how are you doing today?" Participants responded by using a 5-point Likert scale, where 1 = very good (asymptomatic and no limitation of normal activities), 2 = good (mild symptoms and no limitation of normal activities), 3 = fair (moderate symptoms and limitation of some normal activities), 4 = poor (severe symptoms and inability to carry out most normal activities), and 5 = very poor (very severe symptoms which are intolerable and inability to carry out all normal activities). Higher score indicated worst condition.

OMERACT-OARSI responder: participant has \>=50 percent (%) change and \>=2 absolute change from Baseline in either WOMAC pain or physical function subscale scores or at least 2 of the following being true: \>=20% change and \>=1 absolute change from Baseline in WOMAC pain subscale; \>=20% change and \>=1 absolute change from Baseline in the WOMAC physical function subscale; \>=20% change and \>=1 absolute change from Baseline in PGA of osteoarthritis. WOMAC pain and physical function score: 0 to 10 with higher score = worse response. PGA score: 1 = very good and 5 = very poor.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with osteoarthritis (OA). WOMAC pain subscale is a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 5 individual questions, each scored on a numerical rating scale (NRS) of 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Total score range for WOMAC pain subscale score is 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Greater percentage reduction indicates greater improvement. Percentage of participants with cumulative reduction (as percent) (greater than 0%; \>= 10, 20, 30, 40, 50, 60, 70, 80 and 90%; = 100 %) in WOMAC pain subscale from Baseline to Weeks 16 and 24 were reported.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with osteoarthritis (OA). WOMAC pain subscale is a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 5 individual questions, each scored on a numerical rating scale (NRS) of 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Total score range for WOMAC pain subscale score is 0 (no pain) to 10 (extreme pain), where higher scores indicate higher pain. Greater percentage reduction indicates greater improvement. Percentage of participants with reduction in WOMAC pain intensity of at least (\>=) 30%, 50%, 70% and 90% at Weeks 2, 4, 8, 12, 16, 24 and 32 compared to baseline were classified as responders to WOMAC pain subscale and are reported here.

Participants answered: "Considering all the ways your osteoarthritis in your index joint (knee/hip) affects you, how are you doing today?" Participants responded by using a 5-point Likert scale, where 1 = very good (asymptomatic and no limitation of normal activities), 2 = good (mild symptoms and no limitation of normal activities), 3 = fair (moderate symptoms and limitation of some normal activities), 4 = poor (severe symptoms and inability to carry out most normal activities), and 5 = very poor (very severe symptoms which are intolerable and inability to carry out all normal activities). Higher score indicated worst condition. A decrease of at least 2 points on the 5-point scale relative to baseline value indicated improvement.

Participants answered: "Considering all the ways your osteoarthritis in your index joint (knee/hip) affects you, how are you doing today?" Participants responded by using a 5-point Likert scale, where 1 = very good (asymptomatic and no limitation of normal activities), 2 = good (mild symptoms and no limitation of normal activities), 3 = fair (moderate symptoms and limitation of some normal activities), 4 = poor (severe symptoms and inability to carry out most normal activities), and 5 = very poor (very severe symptoms which are intolerable and inability to carry out all normal activities). Higher score indicated worst condition. A decrease of at least 2 points on the 5-point scale relative to baseline value indicates improvement.

Participants were asked to assess index joint (knee/hip) pain during the past 24 hours on an 0-10 point integer scale ranging from 0 (no pain) to 10 (worst possible pain). Baseline score was calculated as the mean of the scores in the index joint over the 3 days days in the initial pain assessment period and a weekly mean was calculated using the daily pain scores in the index joint within each study week. The change from Baseline was calculated using the difference between each post-baseline weekly mean and the baseline mean score, where negative change indicated an improvement.

WOMAC: Self-administered, disease-specific questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness and physical function in participants with OA. WOMAC stiffness subscale is a 2-item questionnaire used to assess the amount of stiffness experienced due to osteoarthritis in index knee or hip during past 48 hours. It is calculated as mean of the scores from 2 individual questions scored on NRS of (no stiffness) to 10 (extreme stiffness), with higher scores indicate higher stiffness. Total score range for WOMAC stiffness subscale score is (no stiffness) to 10 (extreme stiffness), where higher scores indicate higher stiffness. Stiffness is defined as a sensation of decreased ease in movement of knee/hip. Negative change indicated an improvement.

WOMAC Index: self-administered, disease-specific 24 item questionnaire which assesses clinically important, participant-relevant symptoms for pain (5 items), stiffness (2 items), and physical function (17 items) in participants with osteoarthritis of the hip and/or knee. WOMAC average score is the mean of the WOMAC pain, physical function and stiffness subscale scores and ranges from 0 to 10, with higher score indicating worse response. Greater reduction in WOMAC average score indicated greater improvement.

Participants answered the question: "How much pain have you had when walking on a flat surface?" Participants responded by using an 11-point scale where 0 = no pain and 10 = extreme pain. Where 0 is the best response and negative change indicated an improvement.

Participants answered the question: "How much pain have you had when going up or down the stairs?" Participants responded by using an 11-point scale, where 0 = no pain and 10 = extreme pain. Where 0 is the best response and negative change indicated an improvement.

SF-36v2 was a standardized survey evaluating 8 aspects of functional health and well-being: physical and social functioning, physical and role limitations due to emotional problems, bodily pain, general health, vitality, and mental health. The total score and the score for a section was an average of the individual question scores, which were scaled 0-100. Higher scores reflected better participant status and positive change indicated an improvement.

SF-36v2: standardized survey evaluating 8 aspects of functional health and wellbeing (physical and social functioning, role limitations due to physical and emotional problems, bodily pain, general health, vitality, mental health). Total score for each aspect were scaled 0-100. Higher scores reflect better participant status and positive change indicated an improvement. For obtaining physical and mental component scores, z-score for each scale=(observed score - mean score for general 1990 United States \[US\] population)/corresponding standard deviation. The 2 component scores were obtained by multiplying each aspect z-score by physical or mental factor score coefficient (1990 general US population) and summing the eight products. Component scores indicated how many standard deviations higher (in case of positive z-score \[better functioning\])/lower (in case of negative z-score \[worse functioning\]) participant's value was relative to the mean of the reference population.

EQ-5D was a standardized, participant-administered measure of health outcome. It provides a descriptive profile for 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression), using 3 levels (no, moderate, or extreme dysfunction) and a single index value characterizing current health status using a visual analog scale with score ranging from 0 (worst) to 100 (best). EQ-5D summary index was obtained with a formula that weights each level of the dimensions. The index-based score was interpreted along a continuum of 0 (death) to 1 (perfect health). Negative change from baseline represented worsening.

EQ-5D was a standardized, participant-administered measure of health outcome. It provides a descriptive profile for 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression), using 3 levels (no, moderate, or extreme dysfunction) and a single index value characterizing current health status using a visual analog scale with score ranging from 0 (worst) to 100 (best). Baseline EQ-5D individual health state profile was determined as number of participants "no dysfunction, moderate or some dysfunction and extreme dysfunction" and change from baseline in EQ-5D individual health state profile was determined as number of participants "improved, no change or worsened".

Number of participants who discontinued due to lack of efficacy were reported.

Median time to discontinuation due to lack of efficacy was estimated using Kaplan-Meier method.

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. AEs included SAEs as well as non-serious AEs which occurred during the trial.

Number of participants were reported based on the maximum number of intravenous (IV) doses of either tanezumab or placebo received.