Ignite Creation Date:
2025-12-24 @ 12:48 PM
Ignite Modification Date:
2025-12-29 @ 3:28 AM
Study NCT ID:
NCT02381561
Status:
ACTIVE_NOT_RECRUITING
Last Update Posted:
2025-09-17
First Post:
2015-03-05
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Ropidoxuridine in Treating Patients With Advanced Gastrointestinal Cancer Undergoing Radiation Therapy
Sponsor:
National Cancer Institute (NCI)
Organization:
Study Overview
Official Title:
Phase I and Pharmacology Study of Oral 5-Iodo-2-Pyrimidinone-2'- Deoxyribose (IPdR) as a Prodrug for IUdR-Mediated Tumor Radiosensitization in Gastrointestinal Cancers
Status:
ACTIVE_NOT_RECRUITING
Status Verified Date:
2025-09
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This phase I trial studies the side effects and best dose of ropidoxuridine in treating patients with gastrointestinal cancer that has spread to other places in the body and usually cannot be cured or controlled with treatment undergoing radiation therapy. Ropidoxuridine may help radiation therapy work better by making tumor cells more sensitive to the radiation therapy.
Detailed Description:
PRIMARY OBJECTIVES:
I. To conduct a phase I dose escalation trial, to determine the safety and the maximum tolerated dose (MTD), of oral (po) IPdR (ropidoxuridine) given daily for 28 consecutive days with concurrent intensity-modulated radiation therapy (IMRT) in patients with advanced gastrointestinal cancers treated with palliative radiation.
SECONDARY OBJECTIVES:
I. To observe and record anti-tumor activity. II. To establish the pharmacokinetics of daily po dosing of IPdR x 28 days. III. To assess, for patients treated at the MTD, for biochemical evidence of IPdR effect in normal tissue (circulating granulocytes) and tumor tissue (in patients with accessible tumor tissue) by measuring %iododeoxyuridine (IUdR)-deoxyribonucleic acid (DNA) cellular incorporation by flow cytometry and high-pressure liquid chromatography (HPLC) analyses.
IV. To assess the use of %IUdR-DNA cellular incorporation (measured by the investigational laboratory assays of flow cytometry and HPLC) as an exploratory biomarker of IPdR for the following effects: the %IUdR-DNA tumor cell incorporation from day 8 tumor biopsies in gastrointestinal (GI) cancer patients receiving MTD doses of IPdR as an exploratory biomarker of tumor radiosensitization using Response Evaluation Criteria in Solid Tumors (RECIST) criteria.
V. To assess the use of %IUdR-DNA cellular incorporation (measured by the investigational laboratory assays of flow cytometry and HPLC) as an exploratory biomarker of IPdR for the following effects: the %IUdR-DNA cellular incorporation in patients' circulating granulocytes taken weekly during the 28-day IPdR MTD dose, on day 29, and week 8 as an exploratory biomarker of IPdR systemic toxicities to bone marrow as measured by complete blood count (CBC)/differential values.
OUTLINE: This is a dose-escalation study of ropidoxuridine.
Beginning 30 minutes to 2 hours before radiation therapy, patients receive ropidoxuridine PO once daily (QD) on days 1-28 in the absence of disease progression or unacceptable toxicity. Beginning on day 8, patients undergo IMRT 5 days a week for 3 weeks in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up for 4 weeks.
I. To conduct a phase I dose escalation trial, to determine the safety and the maximum tolerated dose (MTD), of oral (po) IPdR (ropidoxuridine) given daily for 28 consecutive days with concurrent intensity-modulated radiation therapy (IMRT) in patients with advanced gastrointestinal cancers treated with palliative radiation.
SECONDARY OBJECTIVES:
I. To observe and record anti-tumor activity. II. To establish the pharmacokinetics of daily po dosing of IPdR x 28 days. III. To assess, for patients treated at the MTD, for biochemical evidence of IPdR effect in normal tissue (circulating granulocytes) and tumor tissue (in patients with accessible tumor tissue) by measuring %iododeoxyuridine (IUdR)-deoxyribonucleic acid (DNA) cellular incorporation by flow cytometry and high-pressure liquid chromatography (HPLC) analyses.
IV. To assess the use of %IUdR-DNA cellular incorporation (measured by the investigational laboratory assays of flow cytometry and HPLC) as an exploratory biomarker of IPdR for the following effects: the %IUdR-DNA tumor cell incorporation from day 8 tumor biopsies in gastrointestinal (GI) cancer patients receiving MTD doses of IPdR as an exploratory biomarker of tumor radiosensitization using Response Evaluation Criteria in Solid Tumors (RECIST) criteria.
V. To assess the use of %IUdR-DNA cellular incorporation (measured by the investigational laboratory assays of flow cytometry and HPLC) as an exploratory biomarker of IPdR for the following effects: the %IUdR-DNA cellular incorporation in patients' circulating granulocytes taken weekly during the 28-day IPdR MTD dose, on day 29, and week 8 as an exploratory biomarker of IPdR systemic toxicities to bone marrow as measured by complete blood count (CBC)/differential values.
OUTLINE: This is a dose-escalation study of ropidoxuridine.
Beginning 30 minutes to 2 hours before radiation therapy, patients receive ropidoxuridine PO once daily (QD) on days 1-28 in the absence of disease progression or unacceptable toxicity. Beginning on day 8, patients undergo IMRT 5 days a week for 3 weeks in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up for 4 weeks.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: