Safety of Antioxidants During GYN Cancer Care

February 9, 2016 updated by: Jeanne Drisko, MD, CNS, FACN

Safety of Oral Antioxidants and Intravenous Vitamin C During GYN Cancer Care

It is known that people with cancer are using antioxidant vitamins at high rates. It is not known if these vitamins are safe to use during cancer treatment. It is not known if common vitamins and minerals used by many cancer patients will interfere with cancer treatments by reducing the effectiveness of the cancer therapy. Preliminary studies that look at the addition of antioxidants during cancer therapy show us that antioxidants could play a significant role in the management of cancer.

Antioxidants are vitamins and other nutrients that help to decrease inflammation in the body by stopping free radicals or oxidants. Common antioxidants include vitamins E, C, and A, beta-carotene, and glutathione. Some doctors who treat cancer are now using antioxidants with chemotherapy while others believe they should not be used with cancer treatment.

The purpose of this study is to try and understand if it is safe efficacious to add antioxidant nutritional supplements to traditional chemotherapy and/or radiation therapy during the treatment of cancer.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

It is known that cancer patients use antioxidants at greater rates than their healthy peers and these patients generally do not tell their physicians. This use has not been adequately evaluated. This pilot trial is a Phase II study designed to assess safety of high-dose antioxidants in gynecologic malignancies. Secondarily, we will evaluate efficacy of antioxidant use. These goals will be accomplished by monitoring adverse events by clinical evaluation, metabolic functions such as but not limited to tumor markers, blood counts, hepatic, and renal enzymes, and tumor response rates secondarily. The study will be conducted at the University of Kansas Medical Center. Oversight partnership is established with the FDA-CDER, Kansas Masonic Cancer Research Institute, and the University of Kansas Medical Center - IRB.

The study is an open label prospective investigational study in 50 gynecologic cancer patients with a Primary Hypothesis: To assess safety of adding high-dose antioxidants to chemotherapy in the treatment of gynecologic malignancies (uterine, cervical, or epithelial ovarian). Qualitative and quantitative toxicities will be assessed by monitoring clinical status by National Cancer Institute common toxicity criteria version 3.0, quality of life measures (FACT-G), and evaluating metabolic functions including but not limited to hepatic and renal function.

Secondary Hypothesis: To assess efficacy by tumor response rates in patients with gynecologic malignancies treated with antioxidants to include intravenous and oral ascorbic acid, intravenous glutathione, oral mixed carotenoids, mixed tocopherols, and vitamin A. Secondary endpoints will be time to progression and survival.

Patients with newly diagnosed or recurrent gynecologic cancer will be invited to participate and these subjects will be limited to those who present with cervical, uterine, or ovarian of epithelial origin. Fifty patients will be enrolled. The study subjects will be treated with antioxidants added to their usual oncologic care for 12 months. This population was chosen because of anecdotal and case report evidence for benefit when high-dose antioxidants are added to their care.

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Phase 2

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Patients must have histologically or cytologically diagnosed adenocarcinoma and/or sarcoma or squamous cell carcinoma of gynecologic origin (uterine, ovary, cervical) that is newly diagnosed or relapsed. Tumors of the ovary are restricted to epithelial origin. There must be evidence for advanced stage neoplasms and/or patients in need of chemotherapy for metastatic disease.
  • The patient must screened for eligibility and have care approved by treating oncologist; the oncology care is to be dictated by the oncology team.
  • Patients must be of ambulatory status without evidence of active brain metastasis or spinal cord compression.
  • ECOG Performance Status 0-2. (Grade 0 = Fully active, able to carry on all pre-disease activities without restriction Grade 1= Restricted in physical strenuous activity but ambulatory and able to carry out work of a light or sedentary nature e.g. light housework, office work Grade 2 = Ambulatory and capable of all self care but unable to carry out any work activities. Up and about more than 50% of waking hours.
  • Laboratory: ANC =1,500/mm3, Hemoglobin > 8g/dL, platelet = 1000,000/mm3, total bilirubin = 1.5 mg/dL, creatinine =2.0 mg/dL, transaminase (AST/ALT) =2.5X upper limit, urine uric acid < 1,000mg/d, urine pH <6, urine oxalate <60 mg/d.
  • Willingness to take oral nutrients and answer FACT-G QOL questionnaires
  • Patients who have no language barrier, are cooperative, and can give informed consent before entering the study after being informed of the medications and procedures to be used in this study may participate.

Exclusion Criteria:

  • G-6PD deficient
  • Ovarian tumors: sarcomas, germ cell, or any atypical cell line other than epithelial
  • History of oxalate renal calculi; urine oxalate level > 60 mg/d at baseline
  • History of bleeding disorder or hemochromatosis
  • Patients undergoing radiation therapy
  • Patients enrolled in other trials currently or in the preceding 3 months.
  • Patients with evidence of a significant psychiatric disorder by history/examination that would prevent completion of the study will not be allowed to participate.
  • ECOG Performance Status of 3-4. (Grade 3 = Capable of only limited self care, confined to bed or chair more than 50% of waking hours. Grade 4 = Completely disabled. Cannot carry on any self care. Totally confined to bed or chair.)
  • Co-morbid condition that would affect survival: end stage congestive heart failure, unstable angina, myocardial infarction within 6 weeks of study, uncontrolled blood sugars = 300 mg/dL, patients with known chronic active hepatitis or cirrhosis.
  • Patients who consume an excess of alcohol or abuse drugs (an excess of alcohol is defined as more than four of any one of the following per day: 30mL distilled spirits, 340mL beer, or 120mL wine) will not be allowed.
  • Patients who smoke tobacco products will not be allowed to participate. Of note, patients who continue or begin to smoke are not allowed to continue with the protocol because we are unable to achieve elevation of the plasma vitamin C level to the desired 400 mg/dL. (Unless 400 mg/dL plasma level is achieved, there is no (presumed) chemotherapeutic action of the high-dose intravenous ascorbate). The inability to achieve the desired plasma level of ascorbate is presumably related to increased oxidative stress from the smoking itself. Patients will be clearly made aware of the possibility of coming off of protocol if they smoke. We will monitor cotinine levels (nicotine metabolite) in suspected smokers.
  • Patients who are unwilling to take the oral antioxidants will not be allowed to participate.

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
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Vitamin C
Drug: vitamin C
IV Vitamin C given 2-3 times a week
Other Names:
  • Ascorbic Acid

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Laboratory analysis, NCI Common Criteria for Toxicity version 3
Time Frame: Completion of study
Completion of study

Secondary Outcome Measures

Outcome Measure
Time Frame
Quality of life - FACT-G at
Time Frame: Baseline, 6 months and Completion of study
Baseline, 6 months and Completion of study

Collaborators and Investigators

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

Sponsor

Jeanne Drisko, MD, CNS, FACN

Collaborators

University of Kansas Medical Center

Investigators

  • Principal Investigator: Jeanne Drisko, MD, University of Kansas Medical Center

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

September 1, 2005

Primary Completion (Actual)

December 1, 2006

Study Completion (Actual)

December 1, 2006

Study Registration Dates

First Submitted

January 27, 2006

First Submitted That Met QC Criteria

January 27, 2006

First Posted (Estimate)

January 31, 2006

Study Record Updates

Last Update Posted (Estimate)

February 10, 2016

Last Update Submitted That Met QC Criteria

February 9, 2016

Last Verified

February 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 10006 (REGISTRY: DAIDS ES)

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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