A Study to Investigate Effectiveness of Tirzepatide Following Initiation of Ixekizumab in Participants With Active Psoriatic Arthritis and Overweight or Obesity in Clinical Practice (TOGETHER AMPLIFY-PsA)

Eligibility Criteria

• * Have a diagnosis of active psoriatic arthritis (PsA) as defined by a rheumatologist or other healthcare professional (HCP) experienced in treating PsA.
• * Body Mass Index (BMI) of 30 kilograms per meter squared (kg/m²) or greater (obesity) or 27 kg/m2 to \<30 kg/m² (overweight) in the presence of at least 1 weight-related comorbid condition (hypertension, dyslipidemia, type 2 diabetes, obstructive sleep apnea, or cardiovascular disease).
• * Who have been treated with ixekizumab for approximately 3 months (±1 month) prior to decision to add tirzepatide.
• * Must be able to initiate tirzepatide (Day 0) within 30 days of treatment decision (baseline or screening).
• * Have currently received ixekizumab for more than 4 months or less than 2 months.
• * Had any exposure to tirzepatide or other glucagon-like peptide-1 (GLP-1) receptor agonist (for example, dulaglutide, liraglutide, or semaglutide).
• * Are currently enrolled in any other clinical study.
• * Have a known hypersensitivity to any component of tirzepatide.
• * Have a personal or family history of medullary thyroid cancer.
• * Have multiple endocrine neoplasia type 2.
• * Have type 1 diabetes mellitus.
• * Have a history of chronic or acute pancreatitis at any time before screening.
• * Have a history of proliferative diabetic retinopathy, diabetic maculopathy, or nonproliferative diabetic retinopathy that requires acute treatment.
• * Have a history of ketoacidosis or hyperosmolar state/coma.
• * Have a history of severe hypoglycemia unawareness within the 6 months before screening.
• * Have a history of severe gastrointestinal complications, including gastroparesis, gastroesophageal reflux disease, dyspepsia, chronic nausea/vomiting.