A Trial of Carboxypeptidase-G2 (CPDG2) and Thymidine for the Management of Patients With Methotrexate Toxicity and Renal Dysfunction

March 3, 2008 updated by: National Cancer Institute (NCI)
High dose methotrexate with leucovorin rescue has demonstrated activity in numerous malignancies. Although high dose methotrexate is generally well tolerated, unpredictable life-threatening toxicity can occur. For patients who have markedly delayed clearance of methotrexate secondary to renal dysfunction, therapeutic options are few and are of limited efficacy. Carboxypeptidase-G2 inactivates methotrexate by hydrolyzing its C-terminal glutamate residue. Carboxypeptidase-G2 could be used to rescue patients with renal dysfunction and delayed methotrexate excretion, as it provides an alternative to renal clearance as a route of elimination.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

High dose methotrexate with leucovorin rescue has demonstrated activity in numerous malignancies. Although high dose methotrexate is generally well tolerated, unpredictable life-threatening toxicity can occur. For patients who have markedly delayed clearance of methotrexate secondary to renal dysfunction, therapeutic options are few and are of limited efficacy. Carboxypeptidase-G2 inactivates methotrexate by hydrolyzing its C-terminal glutamate residue. Carboxypeptidase-G2 could be used to rescue patients with renal dysfunction and delayed methotrexate excretion, as it provides an alternative to renal clearance as a route of elimination.

Study Type

Interventional

Enrollment

10

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Maryland
      • Bethesda, Maryland, United States, 20892
        • National Cancer Institute (NCI)

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • ADULT
  • OLDER_ADULT
  • CHILD

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Patients of any age at risk for life-threatening toxicity following MTX administration secondary to delayed drug excretion as defined by:

Plasma MTX concentration at least 10 micromoles/liter more than 42 hours after the start of the MTX infusion; OR

Creatinine at least 1.5 times the upper limit of normal or creatinine clearance less than 60 ml/sqm/min and delayed MTX excretion documented by plasma MTX concentration measurements (at least 2 standard deviations above the mean) at least 12 hours following MTX administration.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Cancer Institute (NCI)

Publications and helpful links

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General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 1992

Study Completion

January 1, 2001

Study Registration Dates

First Submitted

November 3, 1999

First Submitted That Met QC Criteria

December 9, 2002

First Posted (ESTIMATE)

December 10, 2002

Study Record Updates

Last Update Posted (ESTIMATE)

March 4, 2008

Last Update Submitted That Met QC Criteria

March 3, 2008

Last Verified

February 1, 2000

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 920134
  • 92-C-0134

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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