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Table 2 PK parameters of rivaroxaban derived via NCA (12–18 years and 6–12 years) or PopPK analysis (geometric mean/CV [range])

From: Pharmacokinetics of rivaroxaban in children using physiologically based and population pharmacokinetic modelling: an EINSTEIN-Jr phase I study

 

12–18 years

6–12 years

2–6 years

0.5–2 years

Tablet rivaroxaban 10 mg eq. (n = 4)

Table trivaroxaban 20 mg eq. (n = 5)

Tablet rivaroxaban 10 mg eq. (n = 4)

Suspension rivaroxaban 10 mg eq. (n = 11)

Tablet rivaroxaban 20 mg eq. (NCA n = 4, PopPK n = 5)

Suspension rivaroxaban 20 mg eq. (n = 5)

Suspension rivaroxaban 10 mg eq. (n = 11)

Suspension rivaroxaban 20 mg eq. (n = 5)

Suspension rivaroxaban 10 mg eq. (n = 6)

Suspension rivaroxaban 20 mg eq. (n = 4)

AUC0–24 (μg•h l−1)

PopPK

1320/13.1 (1090–1450)

1760/20.7 (1270–2090)

902/31.2 (645–1340)

720/24.1 (443–1120)

1540/52.0 (917–2390)

1070/37.5 (784–1700)

674/25.5 (433–976)

755/39.0 (476–1110)

503/20.6 (373–660)

672/29.4 (461–929)

NCA

1340/37.7 (788–1760)

1660/39.0 (968–2560)

866/36.0 (614–1410)

719/42.4 (293–1380)

1650/38.9 (1050–2410)

1060/48.0 (572–1890)

    

Cmax (μg l−1)

PopPK

129/11.4 (115–143)

180/12.0 (148–200)

118/11.0 (105–136)

82.5/37.4 (47.2–137)

172/25.9 (128–218)

85.1/15.7 (72.1–106)

84.2/36.0 (46.7–132)

60.1/33.4 (44.9–92.6)

94.9/28.3 (56.0–125)

143/14.7 (118–169)

NCA

161/45.6 (84.5–213)

206/41.3 (121–302)

115/72.6 (44.9–195)

89.2/59.3 (42.0–224)

244/21.1 (198–325)

113/42.9 (77.0–208)

    

C_24ha (μg l− 1)

PopPK

7.94/35.4 (5.25–12.2)

9.46/55.6 (4.42–16.5)

3.18/73.9 (1.71–7.52)

3.35/57.6 (0.873–5.69)

8.46/98.5 (3.45–19.0)

7.18/96.1 (3.27–18.0)

3.27/65.0 (1.11–7.61)

5.71/129 (1.25–18.2)

1.94/33.5 (1.19–2.87)

2.39/39.9 (1.56–3.95)

NCA

9.55/30.0 (7.10–13.3)

11.9/77.0 (4.47–24.3)

3.43/127 (1.27–11.2)

4.18/64.0 (0.952–8.20)

12.5/128 (3.87–35.4)

7.44/123 (2.81–19.2)

    
  1. aC_24h derived via NCA here indicates the concentration obtained in the last sampling interval, i.e. 20–24 h after rivaroxaban administration
  2. AUC0–24, area under the plasma concentration–time curve from time 0–24 h; Cmax, maximal plasma concentration; NCA, non-compartmental analysis; C_24h, plasma concentration 24 h after rivaroxaban administration; eq., equivalent; PopPK, population pharmacokinetic