A Phase 3 Study of Tanezumab for Chronic Low Back Pain

Inclusion Criteria: -Chronic low back pain ≥3 months in duration, Quebec Task Force in Spinal Disorders class 1 or 2, with documented history of previous inadequate treatment response to at least 3 different categories of agents commonly used and generally considered effective for the treatment of chronic low back pain. Exclusion Criteria: --Diagnosis of osteoarthritis of the knee or hip as defined by the American College of Rheumatology (ACR) criteria. * Subjects who have Kellgren Lawrence Grade \> or =2 radiographic evidence of hip or Grade \> or=3 radiographic evidence of knee osteoarthritis will be excluded; * History or radiographic evidence of other diseases that could confound efficacy or safety assessments (e.g., rheumatoid arthritis). * History or radiographic evidence of orthopedic conditions that may increase the risk of, or confound assessment of joint safety conditions during the study. * Signs and symptoms of clinically significant cardiac disease within 6 months of the study (e.g., unstable angina, myocardial infarction, resting bradycardia, poorly controlled or untreated hypertension) as defined in the protocol or subjects with any other cardiovascular illness that in the opinion of the Investigator would render a subject unsuitable to participate in the study * History, diagnosis, or signs and symptoms of clinically significant neurological disease (e.g., transient ischemic attack, stroke, peripheral or autonomic neuropathy) as specified in the protocol * Subjects with evidence or symptoms consistent with autonomic dysfunction (e.g., orthostatic hypotension and/or autonomic symptoms) as defined in the protocol.