PREACT Study: Locally Advanced Gastric Cancer, Chemoradiotherapy vs. Chemotherapy Followed by D2 Surgery and Adjuvant Chemotherapy (PREACT)

A Randomized, Controlled, Multicenter Study to Compare Preoperative Radiochemotherapy With Preoperative Chemotherapy in Patients With Locally Advanced Gastric or Esophagogastric Junction Adenocarcinoma (PREACT Study)

Although the incidence of gastric cancer has been substantially declining for several decades, it is still the sixth most common cancer and the fourth most frequent cause of cancer death worldwide. Surgery is still the only curative option for gastric cancer. However, most patients are unable to undergo surgery because of late stage, unresectable disease. The prognosis for these patients is very poor. Although the Magic trial showed that perioperative chemotherapy can increase the rate of curative surgery and significantly improve overall survival in patients with operable gastric or lower esophageal adenocarcinomas, no pCR events were reported in this trial. The intervention arm in PREACT consists of pre-operative chemotherapy, pre-operative radiochemotherapy, surgery and post-operative chemotherapy. The control arm consists of pre-operative chemotherapy, surgery, and post-operative chemotherapy. The primary purpose of PREACT is to investigate whether the addition of radiochemotherapy to chemotherapy is superior to chemotherapy alone in the pre-operative setting in improving disease free survival in patients with locally advanced gastric or esophagogastric junction adenocarcinoma.

Study Overview

• Status: Completed
• Conditions: Adenocarcinoma; Chemoradiation; GastroEsophageal Cancer; Stomach Neoplasm; Locally Advanced Cancer
• Intervention / Treatment: Drug: Tegafur-Gimeracil-Oteracil Potassium; Radiation: Chemoradiotherapy; Procedure: Gastric resection; Drug: Oxaliplatin

• Study Type: Interventional
• Enrollment (Actual): 204
• Phase: Phase 3

Contacts and Locations

Study Locations

• China
  • Shanghai Municipality
    • Shanghai, Shanghai Municipality, China, 200032
      • Fudan University Shanghai Cancer Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Age >=18 years
• Female and male
• Eastern Cooperative Oncology Group (ECOG) performance status 0-1
• Life expectancy >=6 months
• Histologically proven adenocarcinoma of the stomach or gastroesophageal junction (GEJ) (excluding Siewert I) that is: Stage IIB (T3N1 only), IIIA (T2N3 not eligible), IIIB, and IIIC, i.e. T3 - T4a and node positive, or T4b and/ or node positive, according to American Joint Committee on Cancer (AJCC) 7th edition
• Considered operable following initial staging investigations or after pre-operative therapy Disease which can be radically treated with radiotherapy to 45 Gy with standard fractionation
• Adequate organ function defined as follows:
• Bone marrow: Haemoglobin >=90 g/L, Absolute neutrophil count (ANC) >=1.5 x 109 /L, Platelet count >=100 x 109 /L; Hepatic: Serum bilirubin <=1.5 x upper limit of normal, aspartate aminotransferase (AST) and/or alanine transaminase (ALT) <=2.5 x upper limit of normal; Renal: Serum creatinine <=1.0 x upper limit of normal
• Patients are willing to obey the treatment and provide blood and tissue specimens
• Written informed consent obtained before randomization

Exclusion Criteria:

• Pregnant or lactating females or female patients of childbearing potential who have not been surgically sterilized or are without adequate contraceptive measures
• Sexually active males or females refuse to practice contraception during the study until 30 days after end of study
• Evidence of metastatic disease
• Prior chemotherapy or radiotherapy
• Patients with a past history of cancer in the 5 years before randomization except for the squamous or basal cell carcinoma of the skin that has been effectively treated, and carcinoma in situ of the cervix that has been treated by operation
• Patients with other significant underlying medical conditions that may be aggravated by the study treatment or are not controlled
• Patients with central nervous system(CNS) disorder or peripheral nervous system disorder or psychiatric disease
• Known history of uncontrolled or symptomatic angina, uncontrolled arrhythmias and hypertension, or congestive heart failure, or cardiac infarction within 6 months prior to study enrollment, or cardiac insufficiency
• Concurrent severe infection
• Severe gastrointestinal bleeding, gastrointestinal perforation
• Unable to swallow
• Concurrent disease or condition that would make the subject inappropriate for study participation or any serious medical disorder that would interfere with the subject's safety
• Known hypersensitivity reaction or metabolic disorder to S-1or oxaliplatin
• Renal impairment (GFR <=50ml/min)
• Linitis plastica

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Preoperative radiochemotherapy; 1 cycle preoperative chemotherapy with S-1(Tegafur-Gimeracil-Oteracil Potassium)+ oxaliplatin. 5 weeks preoperative chemoradiotherapy. 1 cycle preoperative chemotherapy with S-1(Tegafur-Gimeracil-Oteracil Potassium)+ oxaliplatin. Gastric resection. 3 cycles adjuvant chemotherapy with S-1(Tegafur-Gimeracil-Oteracil Potassium)+ oxaliplatin.	Drug: Tegafur-Gimeracil-Oteracil Potassium; The dose of S-1 is according to body-surface area (BSA): patients with a BSA of less than 1.25 m2 received 80 mg daily; those with a BSA of 1.25 m2 or more but less than 1.5 m2 received 100 mg daily; and those with a BSA of 1.5 m2 or more received 120 mg daily. oxaliplatin 130mg/m2, intravenously, on day 1.; Other Names: S-1; Radiation: Chemoradiotherapy; Chemotherapy: S-1 40-60mg/m2 orally, oral tablet twice daily, days 1-5 of each week of radiotherapy. Radiotherapy: 45 Gy of radiation in 25 fractions, five days per week for five weeks.; Other Names: radiochemotherapy; Procedure: Gastric resection; A standard D2 gastrectomy was recommended. The type of gastrectomy performed depended on the location and extent of the primary lesion. For middle third tumors, the gastric margin was recommended to be more than 5 cm, and a total gastrectomy was performed. For lower third tumors, a 2 cm duodenal margin was recommended and a subtotal or total gastrectomy was considered. For upper third tumors, a 3 cm esophageal margin was recommended and a total gastrectomy or esophagogastrectomy was performed. Billroth I or Roux-en-y gastrojejunostomy was performed for distal gastrectomy patients, Roux-en-y esophagojejunostomy was performed for total gastrectomy patients.; Other Names: Gastrectomy; Drug: Oxaliplatin; The dose of oxaliplatin is according to body-surface area (BSA): 130mg/m2, intravenously, on day 1.
Active Comparator: Preoperative chemotherapy; 3 cycles preoperative chemotherapy with S-1(Tegafur-Gimeracil-Oteracil Potassium)+ oxaliplatin. Gastric resection. 3 cycles adjuvant chemotherapy with S-1(Tegafur-Gimeracil-Oteracil Potassium)+ oxaliplatin.	Drug: Tegafur-Gimeracil-Oteracil Potassium; The dose of S-1 is according to body-surface area (BSA): patients with a BSA of less than 1.25 m2 received 80 mg daily; those with a BSA of 1.25 m2 or more but less than 1.5 m2 received 100 mg daily; and those with a BSA of 1.5 m2 or more received 120 mg daily. oxaliplatin 130mg/m2, intravenously, on day 1.; Other Names: S-1; Procedure: Gastric resection; A standard D2 gastrectomy was recommended. The type of gastrectomy performed depended on the location and extent of the primary lesion. For middle third tumors, the gastric margin was recommended to be more than 5 cm, and a total gastrectomy was performed. For lower third tumors, a 2 cm duodenal margin was recommended and a subtotal or total gastrectomy was considered. For upper third tumors, a 3 cm esophageal margin was recommended and a total gastrectomy or esophagogastrectomy was performed. Billroth I or Roux-en-y gastrojejunostomy was performed for distal gastrectomy patients, Roux-en-y esophagojejunostomy was performed for total gastrectomy patients.; Other Names: Gastrectomy; Drug: Oxaliplatin; The dose of oxaliplatin is according to body-surface area (BSA): 130mg/m2, intravenously, on day 1.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Disease free survival	up to 3 years

Secondary Outcome Measures

Outcome Measure	Time Frame
Overall survival	up to 3 years
Surgical complete resection rate (R0)	at the time of surgery
Pathological response rate	at the time of surgery
Proportion of patients with toxicities	up to 3 years
Proportion of patients with surgery-related complication	at the time of surgery

Collaborators and Investigators

• Sponsor: Shanghai Cancer Hospital, China
• Collaborators: Fudan University; Ruijin Hospital; Xinhua Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine; Huadong Hospital
• Investigators: Principal Investigator: Ya-nong Wang, M.D., Fudan University; Principal Investigator: Zhen Zhang, M.D., Fudan University

Publications and helpful links

General Publications

• Liu X, Jin J, Cai H, Huang H, Zhao G, Zhou Y, Wu J, Du C, Long Z, Fang Y, Ma M, Li G, Zhou M, Yin J, Zhu X, Zhu J, Sheng W, Huang D, Zhu H, Zhang Z, Lu Q, Xie L, Zhang Z, Wang Y. Study protocol of a randomized phase III trial of comparing preoperative chemoradiation with preoperative chemotherapy in patients with locally advanced gastric cancer or esophagogastric junction adenocarcinoma: PREACT. BMC Cancer. 2019 Jun 20;19(1):606. doi: 10.1186/s12885-019-5728-8.
• Liu X, Cai H, Sheng W, Huang H, Long Z, Wang Y. microRNAs expression profile related with response to preoperative radiochemotherapy in patients with locally advanced gastric cancer. BMC Cancer. 2018 Oct 29;18(1):1048. doi: 10.1186/s12885-018-4967-4.

Study record dates

Study Major Dates

• Study Start (Actual): December 1, 2016
• Primary Completion (Actual): December 5, 2024
• Study Completion (Actual): December 5, 2024

Study Registration Dates

• First Submitted: January 4, 2017
• First Submitted That Met QC Criteria: January 4, 2017
• First Posted (Estimated): January 6, 2017

Study Record Updates

• Last Update Posted (Actual): December 8, 2025
• Last Update Submitted That Met QC Criteria: December 1, 2025
• Last Verified: December 1, 2025

More Information

Terms related to this study

• Keywords: Randomized; Multicenter; Open Label
• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Stomach Diseases; Neoplasms, Glandular and Epithelial; Carcinoma; Stomach Neoplasms; Adenocarcinoma; Organic Chemicals; Therapeutics; Surgical Procedures, Operative; Drug Therapy; Coordination Complexes; Digestive System Surgical Procedures; Radiotherapy; Combined Modality Therapy; Oxaliplatin; Chemoradiotherapy; S 1 (combination); Gastrectomy
• Other Study ID Numbers: FUSCC-LAGCCS002

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES