Open Label Extension to Assess the Safety of Long-Term Treatment With Ampion for Severe Osteoarthritis (OA) of the Knee

Exclusion Criteria

• •1. As a result of medical review and screening investigation, the Principal Investigator considers the patient unfit for the study
• •2. Known clinically significant liver abnormality (e.g., cirrhosis, transplant, etc.)
• •3. A history of allergic reactions to human albumin (reaction to non-human albumin such as egg albumin is not an exclusion criterion)
• •4. A history of allergic reactions to excipients in 5% human albumin (N-acetyltryptophan, sodium caprylate)
• •5. Presence of tense effusions
• •6. Inflammatory or crystal arthropathies, acute fractures, history of aseptic necrosis or joint replacement in the affected knee
• •7. Isolated patella femoral syndrome, also known as chondromalacia
• •8. Any other disease or condition interfering with the free use and evaluation of the index knee for the duration of the trial (e.g. cancer, congenital defects, spine osteoarthritis)
• •9. Major injury to the index knee within the last 12 months
• •10. Severe hip osteoarthritis ipsilateral to the index knee
• •11. Any pain that could interfere with the assessment of study knee pain (e.g. pain in any other part of the lower extremities, pain radiating to the knee)
• •12. Any pharmacological or non-pharmacological treatment targeting OA started or changed 4 weeks prior to entry into the OLE study, or likely to be changed during the duration of the OLE study
• •13. Pregnancy or planning to become pregnant during the study
• •14. Use of the following medications:
• •1. No IA injected pain medications in the study knee during the study. No Hyaluronic Acid (HA) or steroid injections in the study knee at least 12 weeks prior to Day 84 of the Extension Study. HA and steroid injections in the contralateral knee (non-study knee) are acceptable while on study except ± 14 days of an Ampion injection in the study knee.
• •2. No analgesics containing opioids
• •3. NSAIDs are not permitted ± 72 hours before/after injections at in-office visits; acetaminophen is available as a rescue medication during the study from the provided supply
• •4. No topical treatment on the study knee during the study
• •5. No significant anticoagulant therapy (e.g. Heparin or Lovenox) during the study (treatment such as Aspirin and Plavix are allowed)
• •6. No systemic treatments that may interfere with safety or efficacy assessments during the study
• •7. No immunosuppressants
• •8. No use of corticosteroids
• •9. No human albumin treatment in the 3 months prior to the AP-003-C Main Study or interim period prior to enrollment into the OLE study. No human albumin treatment throughout the duration of the OLE study