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Safety of Antioxidants During GYN Cancer Care

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00284427
Recruitment Status : Completed
First Posted : January 31, 2006
Last Update Posted : February 10, 2016
University of Kansas Medical Center
Information provided by (Responsible Party):
Jeanne Drisko, MD, CNS, FACN, University of Kansas Medical Center

Brief Summary:

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.

Condition or disease Intervention/treatment Phase
Ovarian Cancer Cervical Cancer Uterine Cancer Drug: vitamin C Phase 2

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.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 25 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Safety of Oral Antioxidants and Intravenous Vitamin C During GYN Cancer Care
Study Start Date : September 2005
Actual Primary Completion Date : December 2006
Actual Study Completion Date : December 2006

Arm Intervention/treatment
Experimental: 1
Vitamin C
Drug: vitamin C
IV Vitamin C given 2-3 times a week
Other Name: Ascorbic Acid

Primary Outcome Measures :
  1. Laboratory analysis, NCI Common Criteria for Toxicity version 3 [ Time Frame: Completion of study ]

Secondary Outcome Measures :
  1. Quality of life - FACT-G at [ Time Frame: Baseline, 6 months and Completion of study ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

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.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00284427

Sponsors and Collaborators
Jeanne Drisko, MD, CNS, FACN
University of Kansas Medical Center
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Principal Investigator: Jeanne Drisko, MD University of Kansas Medical Center
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Responsible Party: Jeanne Drisko, MD, CNS, FACN, Director Integrative Medicine, University of Kansas Medical Center Identifier: NCT00284427    
Other Study ID Numbers: 10006
First Posted: January 31, 2006    Key Record Dates
Last Update Posted: February 10, 2016
Last Verified: February 2016
Additional relevant MeSH terms:
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Uterine Neoplasms
Neoplasms by Site
Genital Diseases, Female
Female Urogenital Diseases
Female Urogenital Diseases and Pregnancy Complications
Urogenital Diseases
Genital Neoplasms, Female
Urogenital Neoplasms
Genital Diseases
Uterine Diseases
Ascorbic Acid
Physiological Effects of Drugs
Molecular Mechanisms of Pharmacological Action
Protective Agents