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Phase 2 Study of S-1 in Advanced or Metastatic Pancreatic Cancer

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ClinicalTrials.gov Identifier: NCT00651742
Recruitment Status : Completed
First Posted : April 3, 2008
Last Update Posted : June 12, 2013
Information provided by (Responsible Party):

March 31, 2008
April 3, 2008
June 12, 2013
February 2006
July 2008   (Final data collection date for primary outcome measure)
Overall tumor response rate (ORR - the proportion of patients with objective evidence of PR or CR) [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) for 1 year, unless patient is still on treatment, or at the time of death, whichever occurs first. Tumor assessments will be obtained at baseline and at the end of every even cycle. ]
Same as current
Complete list of historical versions of study NCT00651742 on ClinicalTrials.gov Archive Site
  • To evaluate the disease control rate (DCR), duration of response (DR), time to tumor progression (TTP), and survival rate [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) for 1 yr, unless pt is still on treatment, or at the time of death. Pts will be followed for survival status every 2 mos following PD for up to 1 yr ]
  • To investigate the effect of S-1 on Karnofsky Performance Status (KPS) and pain assessments, including pain intensity and analgesic consumption [ Time Frame: Each cycle will last 21 days for up to 1 yr. KPS measured at baseline; w/in 24 hrs prior to drug (Day 1) for cycles after Cycle 1; end of treatment. Pts complete pain diary at 7 days prior to Day 1 of Cycle 1 and cont'ing through end of treatment. ]
  • To evaluate the safety profile of S-1 [ Time Frame: AEs will be reported through f/up ; blood/urine will be collected at baseline, Days 8&15, w/in 24 hrs of study drug on Day 1 of each cycle after Cycle 1; at end of study treatment ]
  • To investigate the relationship of S-1 plasma levels (components and metabolites) with safety and efficacy parameters [ Time Frame: Each cycle will last 21 days (14 days reatment, 7 days recovery). Blood samples to be obtained 1.5 ± 0.5 h, 5 ± 1 h, 7 ± 1 h postdose on Day 1 of Cycle 1 only ]
Same as current
Not Provided
Not Provided
Phase 2 Study of S-1 in Advanced or Metastatic Pancreatic Cancer
An Open-Label, Non-Randomized, Multicenter, Two-Stage, Phase 2 Study of S-1 in Chemotherapy-Naïve Patients With Locally Advanced or Metastatic Pancreatic Cancer
The purpose of this study is to determine whether S-1 is effective in slowing tumor activity in patients with locally advanced or metastatic pancreatic cancer who have not had chemotherapy. The study is also looking at the safety of S-1.
Locally advanced or metastatic pancreatic cancer is relatively unresponsive to chemotherapy. This is true for the nucleoside analogue gemcitabine, with a response rate of approximately 10%, as well as for 5-fluorouracil (5-FU). Even when gemcitabine is combined with other chemotherapeutic drugs or biological agents, the overall tumor response rate remains basically unchanged. S-1 is a new generation oral fluoropyrimidine that combines Tegafur (5-fluoro-1-(tetrahydro-2-furanyl)-2,4(1H,3H)-pyrimidinedione [FT]), an oral prodrug of 5-FU, with two modulators, Gimeracil (5-chloro-2,4-dihydroxypyridine [CDHP]), which inhibits 5-FU degradation by dihydropyrimidine dehydrogenase (DPD) inhibition, and Oteracil potassium (Oxo), which inhibits 5-FU phosphorylation in the digestive tract. This combination of 3 compounds is designed to achieve enhanced antitumor activity while decreasing gastrointestinal toxicity.
Phase 2
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Locally Advanced or Metastatic Pancreatic Cancer
Drug: S-1
All patients will receive S-1 orally at a dose of 30 mg/m2 twice daily (BID) for 14 days followed by a 1-week recovery period, repeated every 3 weeks. The trial will proceed to the second stage only if sufficient efficacy is demonstrated in Stage 1.
Experimental: 1
All patients will receive S-1 orally at a dose of 30 mg/m2 twice daily (BID) for 14 days followed by a 1-week recovery period, repeated every 3 weeks.
Intervention: Drug: S-1
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
October 2008
July 2008   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • 1. Has provided written informed consent. 2. Has histologically or cytologically confirmed locally advanced, unresectable or metastatic adenocarcinoma of the pancreas not amenable to curative radiotherapy or surgery.

    3. Has measurable disease as defined by Response Evaluation Criteria in Solid Tumors (RECIST) criteria (ie, lesions that can be accurately measured in at least one dimension with the longest diameter ≥ 20 mm using conventional techniques or ≥ 10 mm using spiral computed tomography [CT] scan).

    4. Is able to take medications orally. 5. Is 18 years of age or older. 6. Has a Karnofsky Performance Status (KPS) ≥ 70% (see Appendix A). 7. Has a life expectancy of ≥ 12 weeks. 8. Has adequate organ function as defined by the following criteria:

    1. Transaminases AST (SGOT) and ALT (SGPT) ≤ 2.5 times the upper limit of normal (ULN). If liver function abnormalities are due to underlying liver metastasis, then AST (SGOT) and ALT (SGPT) may be ≤ 5 times ULN.
    2. Total serum bilirubin ≤ 3.0 times ULN (if due to underlying liver metastasis, then total bilirubin may be ≤ 5 times ULN).
    3. Absolute granulocyte count ≥ 1,500/mm3 (ie, ≥ 1.5 x 109/L by International Units [IU]).
    4. Platelet count ≥ 100,000/mm3 (IU: ≥ 100 x 109/L).
    5. Hemoglobin value ≥ 9.0 g/dL.
    6. Calculated creatinine clearance ≥ 60 mL/min (based on serum creatinine) (Cockcroft-Gault85 formula) 9. Is willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.

      Exclusion Criteria:

  • 1. Has had treatment with any of the following within the specified time frame prior to study drug administration:

    1. Any prior anticancer chemotherapy.
    2. Radiation therapy to a target lesion unless there was evidence of PD after radiotherapy (and this target lesion must not be the only site of measurable disease).
    3. Any radiotherapy within the previous 3 weeks.
    4. Any investigational agent received either concurrently or within the last 30 days.
    5. Current enrollment in another clinical study with an investigational agent. Patients participating in surveys or observational studies are eligible to participate in this study.

      2. Major surgery within the previous 3 weeks. 3. Symptomatic brain metastasis not controlled by corticosteroids. 4. Leptomeningeal metastasis. 5. Previous or concurrent malignancy other than pancreatic cancer except adequately treated carcinoma in-situ of the cervix or non-melanoma skin cancer. 6. Uncontrolled ascites requiring drainage at least twice a week. 7. Other serious illness or medical condition(s) including, but not limited to, the following:

    1. Uncontrolled congestive heart failure (New York Heart Association [NYHA] Class III or IV), angina pectoris, arrhythmias, or hypertension.
    2. Active infection.
    3. Known (at time of entry) gastrointestinal disorder, including malabsorption, chronic nausea, vomiting, or diarrhea, present to the extent that it might interfere with oral intake and absorption of study medication.
    4. Poorly controlled diabetes mellitus.
    5. Psychiatric disorder that may interfere with consent and/or protocol compliance.
    6. Known human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS)-related illness.
    7. Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or study drug administration, or may interfere with the interpretation of study results, and in the judgment of the Investigator would make the patient inappropriate for entry into this study.

      8. Is receiving a concomitant treatment with drugs interacting with S-1. The following drugs are prohibited because there may be an interaction with S-1:

    1. Sorivudine, uracil, cimetidine, folinic acid, and dipyridamole (may enhance S-1 activity).
    2. Allopurinol (may diminish S-1 activity).
    3. Phenytoin (S-1 may enhance phenytoin activity).
    4. Flucytosine, a fluorinated pyrimidine antifungal agent (may enhance S-1 and flucytosine activity).

      9. Is a pregnant or lactating female. 10. Has known sensitivity to 5-FU. 11. Is a patient with reproductive potential who refuses to use an adequate means of contraception (including male patients).

Sexes Eligible for Study: All
18 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Not Provided
Not Provided
Not Provided
Taiho Oncology, Inc.
Taiho Oncology, Inc.
  • Quintiles, Inc.
  • United BioSource Corporation
Study Director: Fabio Benedetti, MD Taiho Oncology, Inc.
Taiho Oncology, Inc.
June 2013

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP