What is the evidence for fuzapladib in acute pancreatitis in dogs and how is it used?

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Fuzapladib sodium (Panoquell-CA1, Ceva Santé Animale) is conditionally approved by the FDA for management of clinical signs associated with acute onset pancreatitis in dogs, administered at 0.4 mg/kg IV once daily for 3 consecutive days. All treated dogs also receive standard of care — fluid therapy, antiemetics, pain management (excluding NSAIDs), and nutritional support.123 The conditional approval rests on a pilot field study requiring dogs to have a canine pancreatic lipase immunoreactivity (cPLI) concentration ≥ 400 μg/L at Day 0, confirmed by abdominal imaging to exclude gastrointestinal obstruction, foreign body, and abdominal masses, and excluding dogs with severe concurrent life-threatening illness other than acute pancreatitis. The primary outcome was change in the Modified Clinical Activity Index (MCAI) — a 7-item score evaluating activity, appetite, vomiting, cranial abdominal pain, dehydration, stool consistency, and blood in stool.13 Fuzapladib-treated dogs achieved a mean MCAI reduction of -7.7 to -7.75 points from Day 0 to Day 3, compared to -5.68 to -5.7 points in the placebo group. Day 0 mean MCAI scores were 8.53 (fuzapladib) and 7.68 (placebo), confirming comparable baseline severity between groups. The difference in clinical improvement was statistically significant (p = 0.02).13 No significant differences were detected between groups in any secondary variables, including cPLI, cytokines, or C-reactive protein concentrations.3 Fuzapladib was well tolerated, with no safety concerns identified in treated dogs.23 The conditional approval status reflects that full demonstration of effectiveness is still pending; additional clinical studies are ongoing and expected to conclude within a few years of the 2024 publication date. The FDA conditional approval pathway requires only a reasonable expectation of effectiveness, not the full evidentiary standard.12 Published criticism of the pivotal study raises methodological concerns, including insufficient de