Study of Modified Docetaxel, Cisplatin, and Fluorouracil (mDCF) in Unresectable or Metastatic Gastric and Gastroesophageal Junction Adenocarcinoma

Drug Dose (mg/m2) Schedule Docetaxel 40 Day 1 IVPB (60 min) Leucovorin 400 Day 1 IVPB (30 min) Fluorouracil 400 IVP day 1 Fluorouracil 1000 IVCI x 48 hours Cisplatin 40 Day 2 OR 3 IVPB (30 min)

"Drug Dose (mg/m2) Schedule Docetaxel 75 Day 1 IVPB (60 min) Cisplatin 75 Day 1 IVPB (60 min) Fluorouracil 750 IVCI daily x 5 days Neulasta 6 mg subcut on d 8, 9, or 10 or Neupogen 300 or 480 mcg\* subcut x 7 d 10-17~\* 300 mcg for weight \< 60 kg, 480 mcg for weight \> 60 kg~Arm B is repeated every 3 weeks, and a cycle will be considered every 6 weeks (eg 2 treatments). Tumor assessments will be performed following the completion of every cycle for the first 6 cycles, and then every 2 cycles thereafter."

"Treatment for Her2 Positive Participants~Docetaxel 40 Day 1 IVPB (60 min) Leucovorin 400 Day 1 IVPB (30 min) Fluorouracil 400 IVP day 1 Fluorouracil 1000 mg/m2/d daily x 2 days Cisplatin 40 Day 2 OR 3 IVPB (30 min) Trastuzumab Administered on an every 2 week dosing schedule. Initial loading dose of 6 mg/kg over 90 minutes, followed by trastuzumab 4 mg/kg every 2 weeks over 30 minutes."