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Pharmacokinetic and Pharmacodynamic Study of S-1 in Patients With Digestive Organ Cancer

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2003 by Hamamatsu University.
Recruitment status was:  Recruiting
Information provided by:
Hamamatsu University Identifier:
First received: September 12, 2005
Last updated: March 21, 2006
Last verified: December 2003
S-1 is a novel oral fluorouracil antitumor drug that consists of tegafur which is a prodrug of 5-fluorouracil (5-FU); 5-chloro-2,4-dihydropyridine (CDHP), which inhibits dihydropyrimidine dehydrogenase (DPD) activity; and potassium oxonate (Oxo), which reduces gastrointestinal toxicity. 5-FU is metabolized by CYP2A6 and DPD. In this study, the researchers investigate the influences of differences in activities of CYP2A6 and DPD on pharmacokinetics and pharmacodynamics of S-1 and clinical outcomes in digestive organ cancer patients treated with S-1.

Condition Intervention Phase
Gastric Cancer
Esophageal Cancer
Pancreatic Cancer
Colon Cancer
Drug: S-1
Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Pharmacokinetic and Pharmacodynamic Study of S-1 and Its Effects in Patients With the Digestive Organ Cancer With Reference to Genetic Polymorphism and Activity of CYP2A6 and DPD

Resource links provided by NLM:

Further study details as provided by Hamamatsu University:

Primary Outcome Measures:
  • Whether the differences in activities of CYP2A6 and DPD affect pharmacokinetics and pharmacodynamics of S-1 and clinical outcomes

Secondary Outcome Measures:
  • Side effect and motility of patients treated with S-1

Study Start Date: January 2004

Ages Eligible for Study:   20 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All

Inclusion Criteria:

  • Patients with digestive organ cancer

Exclusion Criteria:

  • Patients without digestive organ cancer
  Contacts and Locations
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Please refer to this study by its identifier: NCT00197431

Contact: Naohito Shirai, MD., PhD 81-534-2788

Hamamatsu University School of Medicine Recruiting
Hamamatsu, Shizuoka, Japan, 431-3192
Contact: Naohito Shirai, MD., PhD    81-534-2870   
Principal Investigator: Takahisa Furuta, MD., PhD         
Sponsors and Collaborators
Hamamatsu University
Study Chair: Naohito Shirai, MD., PhD Department Laboratory Medicine, Hamamatsu University School of Medicine
  More Information Identifier: NCT00197431     History of Changes
Other Study ID Numbers: S-12005
Study First Received: September 12, 2005
Last Updated: March 21, 2006

Additional relevant MeSH terms:
Stomach Neoplasms
Pancreatic Neoplasms
Esophageal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Stomach Diseases
Endocrine Gland Neoplasms
Pancreatic Diseases
Endocrine System Diseases
Head and Neck Neoplasms
Esophageal Diseases processed this record on May 25, 2017