“…In a previous study, we found that 7% of 203 patients with SLE were non-adherent,14 and this proportion increased to 30% when the analysis was restricted to patients with active SLE (SELENA-SLEDAI ≥12). Recently, Ting et al 15 found that 29% of adolescents and young adults with SLE were non-adherent, as defined by undetectable [HCQ], and that medication adherence estimates using [HCQ] correlated with adherence rates obtained from pharmacy refill information (Pearson correlation coefficient r=0.50, p<0.0001). One of the main causes of treatment failure in patients with chronic diseases, including SLE, is the lack of adherence to treatment, especially among younger patients 16.…”