This is an exploratory Phase 2, single site, open-label, direct-to-family, adherence and exposure-response study of hydroxychloroquine (HCQ) in pediatric systemic lupus. The study will measure a participant's adherence to HCQ self-administration using an electronic pill bottle cap that records date/time of bottle opening and provides participants with a reminder when a dosage is due and/or missed. All participants will be provided with the electronic pill bottle cap to use with their regular HCQ prescription at the start of the study. For the first 2 weeks of the trial, the electronic notifications will be disabled to determine a baseline measure of adherence. Within 1 day after Visit 2, the electronic notifications will be turned on for all participants, resulting in a series of alerts (via electronic pill bottle cap alerts and smartphone push notifications, text message, and/or automated phone calls). Participants will continue to receive notifications via the electronic pill bottle cap through Visit 4. Throughout the study, participants will undergo a series of blood draws and urinalysis collections, and be asked to complete various questionnaires.
