Demographics and clinical characteristics
| Clinical characteristics n=25 subjects | n (%) or median (range) |
| Age (years) | 15 (9–17) |
| Female | 21 (84) |
| Race | |
| White | 6 (24) |
| Black | 2 (8) |
| Asian | 2 (8) |
| Other | 14 (56) |
| Unknown | 1 (4) |
| Ethnicity | |
| Hispanic | 9 (36) |
| Not Hispanic | 13 (52) |
| Unknown | 3 (12) |
| Weight (kg) | 66 (39–118) |
| Body mass index (kg/m2) % of the 95th percentile | 91 (9–184) |
| HCQ total daily dose (mg), per patient | 300 (87.5–400) |
| CYP2D6 phenotype (genotype) | |
| Normal (*1/*1, *1/*17, *1/*41, *1/*9) | 13 (52) |
| Intermediate (*1/*4, *1/*5, *5/*10) | 9 (36) |
| Poor (*4/*5) | 1 (4) |
| Missing | 2 (8) |
HCQ, hydroxychloroquine.