A Study to Evaluate the Efficacy and Safety of ZILRETTA in Subjects With Glenohumeral Osteoarthritis
Objective: To assess the efficacy of ZILRETTA on pain following an intra-articular (IA) injection in subjects with glenohumeral osteoarthritis (OA) relative to normal saline placebo Secondary Objective: * To assess the efficacy of ZILRETTA on pain following an IA injection in subjects with glenohumeral OA relative to triamcinolone acetonide injectable suspension, and normal saline placebo * To assess the safety of ZILRETTA in subjects with glenohumeral OA relative to normal saline placebo
‣ To be included in the trial, participants must fulfill the following criteria:
• Written informed consent has been obtained prior to initiating any study-specific procedures.
• Willingness and ability to comply with the study procedures and visit schedules and ability to follow verbal and written instructions, including eDiary questionnaire completion requirements.
• Participants 50 to 80 years of age, inclusive, on the day of consent.
• Body mass index (BMI) does not prohibit proper identification of bony landmarks and/or otherwise prohibit the ability to properly inject into the shoulder joint per Principal Investigator's (PI's) judgment.
• Participants with shoulder pain and glenohumeral arthritis with or without rotator cuff pathology (eg, rotator cuff inflammation, partial rotator cuff tear \[non-to-mild superior subluxation of the humeral head on X-ray\] may be included). Participants with positive Neer and Hawkins-Kennedy tests on index shoulder exam should be excluded. Participants who have complete or irreparable rotator cuff tear should not be included.
• Grade 1, 2, or 3 OA in the index glenohumeral joint based on the Samilson-Prieto classification system as confirmed by X-ray (axillary view and true anterior-posterior view) taken at, or within 6 months of, the Screening Visit and read by the central reader.
• Average daily mean pain score ≥4.0 and ≤9.0 in index shoulder (0-10 numeric rating scale \[NRS\]) using the average daily ratings for at least 4 out of the 7 days prior to Baseline/Day 1.
• Average Shoulder Pain and Disability Index (SPADI) pain score ≥4.0 and ≤9.0 in index shoulder during the Screening and Pretreatment Phase (average score) as calculated and reported in the electronic Clinical Outcomes Assessment (eCOA).
• Willingness to abstain from use of protocol-specified restricted medications and therapies during the study.
⁃ Sexually active males or females of childbearing potential must agree to use a highly effective method of contraception throughout the duration of the study. Females of childbearing potential are defined as females who are not surgically sterile or postmenopausal (defined as 12 consecutive months with no menses without an alternative medical cause) as documented in medical history. Highly effective methods of contraception include abstinence; oral, injected, or implanted hormonal methods of contraception; intrauterine device or intrauterine system; condom or occlusive cap (diaphragm or cervical/vault caps) with spermicidal foam/gel/film/cream/suppository; or monogamous intercourse with a partner who is surgically sterile (post-vasectomy, -hysterectomy, or -tubal ligation).