Real‐world Longitudinal Data on the Impact of Hydroxychloroquine Blood Level Monitoring on Lupus Outcomes: Results of a Prospective Longitudinal Cohort Study

Key Points

• This research aims to evaluate how monitoring hydroxychloroquine levels affects lupus outcomes in patients.
• Conducted a prospective longitudinal cohort study.
• Monitored hydroxychloroquine blood levels in patients with systemic lupus erythematosus.
• Focused on patients with estimated glomerular filtration rate (eGFR) ≤75.
• Improved control of systemic lupus erythematosus (SLE) was observed with blood level monitoring.
• Patients with eGFR ≤75 benefited the most from hydroxychloroquine monitoring.