Study to Evaluate Anti-emetic Effect of Aprepitant Versus Placebo in Children and Adolescent Receiving Chemotherapy

"The patient on study group with weight category of 15-40 kg will receive:~D1- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 80 mg; D2- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 80 mg; D3- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 80 mg and~The patient with weight category of 41-65 kg in study group will receive:~D1- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 125 mg; D2- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 80 mg; D3- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant 80 mg"

"Patient on control group with weight category of 15-40 kg will receive:~D1- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 80 mg; D2- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 80 mg; D3- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 80 mg; and~The patient on control group with weight category of 41-65 kg will receive:~D1- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 125 mg; D2- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 80 mg; D3- Dexamethasone 0.15 mg/kg, ondansetron (0.15 mg/kg, single dose), Aprepitant placebo 80 mg (all are injectable except Aprepitant oral capsule)."