Abstract
We read with great interest the article by Petri et al. describing the association between hydroxychloroquine (HCQ) blood level and HCQ retinopathy in systemic lupus erythematosus (SLE) (1). Retinopathy occurred in 4.3% of 537 SLE patients. Both mean (p=0.0124) and maximum (p=0.034) HCQ blood levels predicted HCQ retinopathy. By contrast, in a recent case-control study including 23 SLE patients with HCQ retinopathy and 547 controls, no association was found between HCQ blood levels and HCQ retinopathy (2) with a median HCQ blood level of 944ng/mL in the retinopathy group versus 849ng/mL in the control group (p=0.46).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
