Episode 36: ACR Response Criteria in Rheumatoid Arthritis Trials

In this QCast episode, Jullia and Tom unpack ACR response criteria in rheumatoid arthritis clinical trials and why these endpoints are more operationally demanding than they look on paper. They explain what ACR20, ACR50, and ACR70 measure, how the responder definition depends on consistent joint counts, patient-reported assessments, and timely acute phase reactants, and why a clean-looking binary endpoint can still carry composite-style risks.Key TakeawaysProtect the core ACR components at site level, especially tender and swollen joint counts, visit windows, and lab turnaround, because missing or late elements can block endpoint classification.Build derivations and reporting to reflect the ACR hierarchy so ACR70 implies ACR50 and ACR20, avoiding avoidable inconsistencies in outputs.Plan early for how you will use repeated assessments, whether through repeated measures, curve-focused approaches, or overall summaries like weighted differences or GEE, and be clear on how results will be interpreted.🔗 Learn More & Get Support: Visit quanticate.com to explore our biometrics services and discover how we can support your next clinical trial. 📝 Episode Notes & Transcript: Find show notes, resources, and a full transcript at quanticate.com/podcast.🔔 Stay Connected: Subscribe to QCast on Apple Podcasts, Spotify, or your favourite platform to never miss an episode.About QuanticateFounded in 1994, Quanticate is a biometrics-focused CRO with over 30 years' experience delivering expert clinical and post-marketing data services worldwide. Specialising in the collection, management, standardisation, analysis, and reporting of data, we support pharma and biotech companies globally with high-quality solutions for clinical development. We specialise in:Clinical Data Capture & ManagementBiostatistics & Statistical ConsultancyStatistical Programming & PK/PD AnalysisMedical Writing & PharmacovigilanceRegulatory & Submission SupportAI & AutomationPost-Marketing Safety & Real-World DataQuanticate is committed to delivering expertise and solutions that drive the success of clinical development worldwide.