Please select the eligibility criteria that correspond to the clinical trial below.
Title: An Open-Label, Multicenter, Randomized, Phase 3 Study of S-1 and Cisplatin Compared With 5-FU and Cisplatin in Patients With Metastatic Diffuse Gastric Cancer Previously Untreated With Chemotherapy
Brief Summary: The purpose of this study is to evaluate the safety and efficacy of S-1 and Cisplatin compared to 5-FU and Cisplatin in treatment of patients with metastatic diffuse gastric and gastro-esophageal junction cancer previously untreated with chemotherapy.


Options:
A: Inclusion Criteria:

1. unresectable or recurrent histologically proved gastric cancer
2. adequate oral intake
3. age 20 or older and 75 or younger
4. Performance Status (ECOG):0, 1, 2
5. measurable or unmeasurable lesions
6. preserved organ functions
7. no severe medical condition
8. no prior chemotherapy for gastric cancer
9. written informed consent

Exclusion Criteria:

1. patient with marked infection or inflammation
2. patient with severe peritoneal metastasis
3. patient with massive pleural effusion
4. patient with metastasis to CNS
5. patient with diarrhea 4 or more times per day
6. patient severe medical condition
7. patient with other concurrent malignancy affecting on survival or adverse events
8. pregnant or nursing patient or with intent to bear baby
9. patient evaluated to be inadequate by a attending doctor
10. patient requiring nutritional support
B: Inclusion Criteria:

* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
* Life expectancy of at least 12 weeks from the first dose of study treatment
* Measurable and/or evaluable disease based on Response Evaluation Criteria in Solid Tumors (RECIST version 1.1)
* Adequate organ function as determined by the following laboratory results, within 28 days prior to randomization
* Participants must have a history of advanced gastric cancer (AGC), defined as unresectable and locally advanced or metastatic gastric cancer, including adenocarcinoma of the gastroesophageal junction (GEJ), and must have experienced disease progression during or after first-line therapy for their disease
* HER2-positive tumor (primary tumor or metastatic lesion) as confirmed by central laboratory HER2 testing (immunohistochemistry and/or in-situ hybridization)
* Participants must have received at least one prior chemotherapy regimen for AGC; prior therapy does not need to have included HER2-directed therapy.
* First-line therapy for AGC, including adenocarcinoma of the GEJ, must have included a combination of at least a platinum- and a fluoropyrimidine-based treatment given concurrently; prior therapy does not need to have included a HER2-directed therapy.
* Adjuvant or neoadjuvant therapy for AGC is allowed.

Exclusion Criteria:

* An interval shorter than 21 days from the last dose of chemotherapy or HER2-directed therapy until the time of randomization
* Prior treatment with trastuzumab emtansine, docetaxel, or paclitaxel either as single agents or as part of a treatment regimen.
* Treatment with any investigational anticancer drug within 21 days of the first study treatment administration
* More than one prior line of therapy for advanced gastric cancer
* History of other malignancy within the previous 5 years except for appropriately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, Stage I uterine cancer, or other malignancies with an expected curative outcome
* Brain metastases that are untreated or symptomatic or require any radiation, surgery, or steroid therapy to control symptoms from brain metastases within 1 month of randomization
* Peripheral neuropathy Grade \>/=2
* Uncontrolled cardiopulmonary dysfunction (e.g., high blood pressure, serious cardiac arrhythmia)
* Other current, severe, uncontrolled systemic disease (e.g., clinically significant metabolic disease, wound healing disorders, ulcers)
* Clinically significant bleeding within 30 days before enrollment
* For female participants, current pregnancy or lactation
* Major surgical procedure or significant traumatic injury within 28 days prior to randomization or anticipation of the need for major surgery during the course of study treatment
* Infection with Human immunodeficiency virus (HIV) or hepatitis B virus, hepatitis C virus
C: Inclusion Criteria:

* Has given written Informed Consent.
* Histologically confirmed, unresectable, metastatic diffuse gastric cancer including carcinoma of the gastro-esophageal junction.
* No prior chemotherapy for gastric cancer except adjuvant and/or neo-adjuvant chemotherapy more than 12 months ago.
* Life expectancy of at least 3 months.
* Able to take medications orally.
* Eastern Cooperative Oncology Group performance status 0 to 1.
* Adequate organ function (bone marrow, kidney and liver).

Exclusion Criteria:

* Certain type(s) of non-measurable lesion(s), if the only one(s).
* Certain serious illness or medical condition(s).
* Lost greater than or equal to 10% of body weight in the 3 months proceeding signing the Informed Consent Form.
* Treatment with drugs interacting with S-1, 5-FU, or cisplatin.
* Pregnant or lactating female.
* Known hypersensitivity to fluoropyrimidines or cisplatin.

Other protocol-defined inclusion/exclusion criteria may apply.
D: Inclusion Criteria:

* Patients must have histologically or cytologically confirmed metastatic or unresectable gastric or gastroesophageal junction (GEJ) adenocarcinoma. GEJ adenocarcinoma may be classified according to Siewert's classification type I, II, or III\[43\].
* Histological documentation of local recurrence or metastasis is strongly encouraged, unless the risk of such a procedure outweighs the potential benefit of confirming the metastatic disease.
* If no histologic confirmation, then the metastases or recurrence will require documentation by a 2nd radiographic procedure (eg. PET/CT scan or MRI in addition to the CT scan). If the imaging procedure does not confirm recurrent or metastatic disease, biopsy confirmation will be required.
* Patients must have disease that can be evaluated radiographically. This may be measurable disease or non-measurable disease. Measurable disease is defined as that which can be measured in at least one dimension as \> 20 mm with conventional techniques, or \>10 mm by high resolution imaging. Disease that is identified on radiology studies, but does not meet the criteria for measurable disease, is considered non-measurable.
* Patients may have received no prior chemotherapy for metastatic or unresectable disease. Patients may have received prior adjuvant therapy (chemotherapy and/or chemoradiation) if more than 6 months have elapsed between the end of adjuvant therapy and registration. Patients may not have received prior docetaxel or cisplatin.
* Age 18 years or older.
* Karnofsky performance status \> than or = to 70% (ECOG performance status 0-1).
* Peripheral neuropathy \< than or = to grade 1.
* Hematologic (minimal values):

  * White blood cell count \> than or = to 3000/mm3
  * Absolute neutrophil count \> than or = to 1500 cells/ mm3
  * Hemoglobin \> than or = to 9.0 g/dl
  * Platelet count \> than or = to 100,000 / mm3
* Hepatic (minimal values):
* Total bilirubin \< or = to 1.5

  \* \* AST and ALT and Alkaline phosphatase must be within the eligible range. In determining eligibility, the more abnormal of the two values (AST or ALT) should be used. Patients with alkaline phosphatase elevation secondary to the bony metastases rather than liver dysfunction may proceed with treatment on protocol after discussion with the principal investigator.
* Kidney function (minimal values):

  \* Serum creatinine \< than or = to 1.5 mg/dl - if serum creatinine is 1.2-1.5 mg/dl, the creatinine clearance (either measured or calculated) must be 50 ml/min or greater
* The patient has a PT (INR) \< than or = to 1.5 and an PTT \< than or = to 3 seconds above the upper limits of normal if the patient is not on anticoagulation. If a patient is on full-dose anticoagulants, the following criteria should be met for enrollment:

  * The patient must have an in-range INR (usually between 2 and 3) on a stable dose of warfarin or on stable dose of LMW heparin
  * The patient must not have active bleeding or pathological conditions that carry high risk of bleeding (e.g. tumor involving major vessels, known varices)
* Women of childbearing potential have a negative pregnancy test.
* Men and women of childbearing potential must be willing to consent to using effective contraception while on treatment and for at least 3 months thereafter.
* Ability to understand informed consent and signing of written informed consent document prior to initiation of protocol therapy.
* Patients must have HER2-positive (FISH+ or IHC 3+) metastatic or unresectable gastric or gastroesophageal junction (GEJ) adenocarcinoma to be eligible for trastuzumab. For the purposes of this protocol, FISH+ is defined as HER2:CEP17 ratio ≥ 2.0. Biopsy samples with cohesive IHC3+ or FISH+ clones are considered HER2 positive irrespective of size, i.e.\<10%. FISH+ defined as \>2 HER2:CEP17.
* Patients who are receiving trastuzumab must have a left ventricular ejection fraction of ≥ 50%.

Exclusion Criteria:

* Patients who have received previous chemotherapy for the treatment of metastatic or unresectable gastric or GEJ adenocarcinoma are ineligible.
* Patients who have received previous pre- or post-operative chemotherapy or chemoradiation are ineligible if therapy was completed less than 6 months prior to study registration. Patients must have recovered from adverse events from any previous therapy.
* Patients who have received previous docetaxel or cisplatin.
* Patients with a history of another neoplastic disease within the past three years, excluding basal cell carcinoma of the skin, cervical carcinoma in situ, or nonmetastatic prostate cancer.
* Patients with brain or central nervous system metastases, including leptomeningeal disease.
* Pregnant (positive pregnancy test) or breast feeding.
* Serious, non-healing wound, ulcer, or bone fracture.
* Significant cardiac disease as defined as:

unstable angina, New York Heart Association (NYHA) grade II or greater, congestive heart failure, history of myocardial infarction within 6 months

* Evidence of bleeding diathesis or coagulopathy.
* History of a stroke or CVA within 6 months
* Clinically significant peripheral vascular disease.
* Clinically significant hearing loss or ringing in the ears.
* Patients with a history of severe hypersensitivity reaction to Taxotere® or other drugs formulated with polysorbate 80.
* Inability to comply with study and/or follow-up procedures.
* Patients with any other medical condition or reason, in that investigator's opinion, makes the patient unstable to participate in a clinical trial.
* For patients who are Her2 positive and will be treated on the trastuzumab + mDCF cohort, prior trastuzumab treatment is not allowed.
* For patients who are Her2 positive and will be treated on the trastuzumab+mDCF cohort, left ventricular function \<50%

Answer: C