Research Article

Population Pharmacokinetic Analysis of Selumetinib and Its N-desmethyl Metabolite in Japanese and Non-Japanese Pediatric Patients with Neurofibromatosis Type 1 and Inoperable Plexiform Neurofibromas

Table 2

Summary of patient demographics and other baseline characteristics.

ItemD1346C00013SPRINTTotal
N = 12N = 68N = 80

Age (years)13.25 (7.5–18.2)10.20 (3.0–18.5)10.55 (3.0–18.5)
Weight (kg)34.00 (20.7–58.9)29.55 (15.7–88.7)30.09 (15.7–88.7)
BSA (m2)1.185 (0.82–1.57)1.040 (0.67–2.01)1.059 (0.67–2.01)
CrCL (mL/min/1.73 m2)188.55 (126.6–275.7)194.43 (128.4–363.4)192.01 (126.6–363.4)
Bilirubin (mg/dL)0.605 (0.31–1.33)0.410 (0.21–1.23)0.492 (0.21–1.33)
AST (µkat/L)0.300 (0.19–0.39)0.342 (0.12–1.90)0.333 (0.12–1.90)
ALT (µkat/L)0.156 (0.10–0.30)0.275 (0.10–0.77)0.233 (0.10–0.77)
Albumin (g/L)44.0 (42–47)42.0 (35–49)42.0 (35–49)
Sex
 Female9 (75.0%)30 (44.1%)39 (48.8%)
 Male3 (25.0%)38 (55.9%)41 (51.2%)
Race
 Japanese12 (100.0%)0 (0.0%)12 (15.0%)
 White0 (0.0%)56 (82.4%)56 (70.0%)
 Black0 (0.0%)5 (7.4%)5 (6.2%)
 Asian-Other0 (0.0%)3 (4.4%)3 (3.8%)
 Missing0 (0.0%)4 (5.9%)4 (5.0%)

Data are presented as the median (range) for continuous items and as n (%) for categorical items. Asian-Other represents Asian Other than Japanese, Chinese, and Indian. ALT, alanine aminotransferase; AST, aspartate aminotransferase; BSA, body surface area; CrCL, creatinine clearance.