Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study In Subjects With Osteoarthritic Pain Of The Knee

WOMAC: self-administered, disease-specific 24 item questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness, and physical function in participants with osteoarthritis (OA) of the hip and/or knee. It consists of 3 domains: pain, stiffness and physical function. WOMAC pain domain consists of 5 questions scored on 5 point Likert scale (0=minimum pain to 4=maximum pain) where higher score indicates higher pain. It assesses amount of pain experienced due to OA in the study joint in past 48 hours. Total possible pain domain score calculated by addition of scores of each 5 questions ranged from: 0 (minimum) - 20 (maximum), higher scores indicate higher pain.

WOMAC: self-administered, disease-specific 24 item questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness, and physical function in participants with OA of the hip and/or knee. It consists of 3 domains: pain, stiffness and physical function. WOMAC pain domain consists of 5 questions scored on 5 point Likert scale (0=minimum pain to 4=maximum pain) where higher score indicates higher pain. It assesses amount of pain experienced due to OA in the study joint in past 48 hours. Total possible pain domain score calculated by addition of scores of each 5 questions ranged from: 0 (minimum) - 20 (maximum), higher scores indicate higher pain.

WOMAC: self-administered, disease-specific 24 item questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness, and physical function in participants with OA of the hip and/or knee. It consists of 3 domains: pain, stiffness and physical function. WOMAC stiffness domain consist of 2 questions scored on 5 point Likert scale (0=minimum stiffness to 4= maximum stiffness), higher score indicates higher stiffness. It assesses stiffness (sensation of decreased ease) due to OA in study joint in past 48 hours. Total possible stiffness domain score calculated by addition of scores of each 2 questions ranged from: 0 (minimum) to 8 (maximum), higher scores indicate higher stiffness.

WOMAC: self-administered, disease-specific 24 item questionnaire which assesses clinically important, participant-relevant symptoms for pain, stiffness, and physical function in participants with OA of the hip and/or knee. It consists of 3 domains: pain, stiffness and physical function. WOMAC physical function consists of 17 questions scored on 5 point Likert scale (0=minimum physical impairment to 4=maximum physical impairment), higher score indicates worse function. It assesses worse function (ability to move/perform activity) due to OA in study joint in past 48 hours. Total possible score calculated by addition of scores of each 17 questions ranged from: 0 (minimum) to 68 (maximum), higher scores indicate worse function.

WOMAC: self-administered, disease-specific instrument assessing clinically important, participant-relevant symptoms for pain, stiffness, physical function in participants with OA of the hip and/or knee. Index consists of 24 questions: 5 (pain), 2 (stiffness), 17 (physical function). Each question was assessed on a 5-point Likert scale (0= none to 4=extreme), higher score indicates worse function. Total WOMAC Score: summation of 24 component item scores, without any correction for relative importance of different subscales. Total score range 0 (minimum) to 96 (maximum), higher score indicate higher symptoms.

WOMAC: self-administered, disease-specific instrument assessing clinically important, participant-relevant symptoms for pain, stiffness, physical function in participants with OA of hip or knee. Index consists of 24 questions: 5 (pain), 2 (stiffness), 17 (physical function). Each question was assessed on a 5-point Likert scale; score range: 0 (none) to 4 (extreme) where higher score indicates worse function. Importance-weighted total WOMAC score weighs 3 subscales of pain, stiffness, physical function using factors of 0.42, 0.21, and 0.37 to account for relative importance. Total score calculated by applying factors and summing all domains ranged from 0 (minimum) to 35.24 (maximum), higher score indicate higher symptoms.

NRS: participant rated their daily pain on 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain.

NRS: participant rated their daily pain on 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain.

Participant rated their daily pain on 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. In this outcome measure number of participants with at least 30% and 50% reduction in average weekly pain score at Week 2 from Baseline are reported. Average weekly score at Week 2 was average of daily pain scores from Day 8 to Day 14 and at Baseline it was average of daily pain scores from Day -6 to Day 0.

Participants answered the following question: "Considering all the ways your arthritis affects you, how are you doing today?" Participants rated their condition using the scale assessing the symptoms and limitations to carry out normal daily activities. Score ranged from 1 to 5; where 1= very good (No symptoms and limitations); 2= good (mild symptoms and no limitations); 3= fair (moderate symptoms and some limitations); 4= poor (severe symptoms and inability to carry out most activities); and 5= very Poor (very severe, intolerable symptoms and inability to carry out all activities). Higher scores indicated more limitations in carrying out normal activities.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. SAE was defined as any untoward medical occurrence at any dose that: was fatal or life-threatening; resulted in persistent or significant disability/incapacity; constituted a congenital anomaly/birth defect; was medically significant; required inpatient hospitalization or prolongation of existing hospitalization. Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. Treatment emergent AEs included both SAEs and all non-SAEs.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. A treatment-related AE was any untoward medical occurrence attributed to the study drug in a participant who received study drug. Treatment emergent AEs included both SAEs and all non-SAEs. A treatment-related SAE was a treatment-related AE and was defined as any untoward medical occurrence at any dose that: was fatal or life-threatening; resulted in persistent or significant disability/incapacity; constituted a congenital anomaly/birth defect; was medically significant; required inpatient hospitalization or prolongation of existing hospitalization. Relatedness to study drug was assessed by the investigator.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. A treatment-related AE was any untoward medical occurrence attributed to the study drug in a participant who received study drug.

Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. The severity grades (mild, moderate and severe) were defined as - Mild: did not interfere with participant's usual function, Moderate: Interfered to some extent with participant's usual function and Severe: Interfered significantly with participant's usual function.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. A treatment-related AE was any untoward medical occurrence attributed to the study drug in a participant who received study drug. The severity grades (mild, moderate and severe) were defined as - Mild: did not interfere with participant's usual function, Moderate: Interfered to some extent with participant's usual function and Severe: Interfered significantly with participant's usual function.

Treatment-emergent AEs were events that occurred between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. The severity grades (mild, moderate and severe) were defined as - Mild: did not interfere with participant's usual function, Moderate: Interfered to some extent with participant's usual function and Severe: Interfered significantly with participant's usual function.

Criteria for clinical significance: sitting, standing or supine pulse rate <40 beats per minute (bpm) or >120 bpm; sitting, standing or supine diastolic blood pressure < 50 millimeter of mercury (mmHg); sitting, standing or supine systolic blood pressure < 90 mmHg. Clinical significance was judged by the investigator.

Change (increase) from baseline of greater than or equal to (>=) 25% in maximum PR Interval and maximum QRS complex in milliseconds (msec). Change (increase) from baseline of >= 30 msec and less than (<) 60 msec or change >= 60 msec in maximum QTc and maximum QT interval with Fridericia's Correction (QTcF).

In this outcome measure data for reporting arm PF-04136309 was collected and reported as planned.

Monocytes (percent) were derived as monocyte absolute counts per white blood cell absolute counts*100.