Study to Determine the Safety and the Efficacy of Fasinumab Compared to Placebo and Nonsteroidal Anti-inflammatory Drugs (NSAIDs) for Treatment of Adults With Pain From Osteoarthritis of the Knee or Hip

WOMAC pain subscale was a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in the index knee during past 48 hours. It was calculated as mean of the scores from 5 individual questions scored on a NRS of 0 (minimum pain) to 10 (maximum pain), where higher scores indicate more pain.

The PGA was a patient-rated assessment of current disease state on 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 were intolerable and inability to carry out all normal activities). Higher score indicated severe condition.

WOMAC pain subscale is a 5-item questionnaire used to assess the amount of pain experienced due to osteoarthritis in the index joint (knee or hip) in the past 48 hours. It is calculated as the mean of the scores from the 5 individual questions scored on a NRS of 0 (no pain) to 10 (higher pain), where higher scores indicated higher pain.

Physical function referred to participant's ability to move around and perform usual activities of daily living. The WOMAC physical function subscale was a 17-item questionnaire used to assess the degree of difficulty experienced due to osteoarthritis in index joint (knee or hip) during past 48 hours. It was calculated as mean of the scores from 17 individual questions scored on a NRS of 0 (minimum difficulty) to 10 (maximum difficulty), where higher scores indicated maximum difficulty.

The PGA was a patient-rated assessment of current disease state on 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 were intolerable and inability to carry out all normal activities). Higher score indicated severe condition.

Participants reported weekly average walking index joint pain based on NRS. The NRS was nationally recognized numeric scale from 0 to 10, where 0 would demonstrate no pain, 1 to 3 would demonstrate mild pain, 4 to 6 would be moderate pain, 7 to 9 would be severe pain and 10 would be the worst pain possible. Higher score indicated greater pain.

AA was a composite term that encompasses the following conditions: Rapidly progressive Osteoarthritis (OA) type 1 and 2, Subchondral insufficiency fractures, and Primary Osteonecrosis confirmed by an arthropathy adjudication committee. AAs were also evaluated to determine if they met Destructive Arthropathy criteria.

DA is a unique clinical form of rapidly destructive arthropathy over and above that seen in the normal progression of OA. DA criteria can be associated with Rapidly Progressive OA type 2, Subchondral Insufficiency fracture, and Primary Osteonecrosis confirmed by an arthropathy adjudication committee.

An adverse event (AE) was defined as any untoward medical occurrence in a participant administered a study drug which may or may not have a causal relationship with the study drug. TEAE was defined as an AE with an onset that occurs after receiving study drug. A serious adverse event (SAE) was defined as any untoward medical occurrence that resulted in any of the following outcomes: death, life-threatening, required initial or prolonged in-patient hospitalization, persistent or significant disability/incapacity, congenital anomaly/birth defect, or considered as medically important event. Any TEAE included participants with both serious and non-serious TEAEs.

Potential events of SNS dysfunction were monitored throughout the study through physical examination, AE reporting, assessment of orthostatic hypotension, and the Survey of Autonomic Symptoms. Sympathetic nervous system dysfunction was diagnosed after consultation with an appropriate specialist, such as a neurologist and/or cardiologist.

Any participants with a peripheral sensory event that persisted for 2 months was referred for a neurology or other specialty consultation and reported as an Adverse Events of Special Interest (AESI).

Number of participants who underwent a JR surgery from baseline up to Week 24 were reported.

Number of participants who underwent a JR surgery from baseline up to follow-up period (Week 44) were reported.

An EOS phone contact was conducted at Week 72 following the last dose of study drug (Week 24) to evaluate the number of participants who had undergone or were scheduled for JR surgery.

Immunogenicity was characterized by ADA responses \& titers. Responses categories: Pre-existing immunoreactivity - ADA positive response at baseline with all post first dose negative results or positive response at baseline with all post first dose ADA responses < 9-fold over baseline titer levels; Treatment-boosted response - positive response in the assay post first dose, >= 9-fold over baseline titer levels, when baseline results are positive; Treatment-emergent response - ADA positive response post first dose when baseline results = negative or missing.