Pilot Trial of Intravenous Vitamin C in Refractory Non-Hodgkin Lymphoma (NHL)
Condition: Non-Hodgkin Lymphoma
MeSH terms: Lymphoma; Lymphoma, Non-Hodgkin
Intervention: Intravenous vitamin C
Intervention description: Up to 100 gms of intravenous vitamin C, three times per week for 10 weeks.
Phase: Phase 2
Study type: Interventional
Primary purpose: Treatment
Intervention model: Single Group Assignment
Masking: None (Open Label)
Enrollment: 2.0
Sex: All
Minimum age: 18 Years
Healthy volunteers: No

Summary:

      Eligible candidates will be adults with aggressive or very aggressive NHL (WHO classification
      diagnosis confirmed by histological tumor examination). Patients must have failed one or more
      prior NHL chemotherapy or antibody therapy with curative intent, and the disease must not
      have progressed within 60 days of last therapy. In addition, patients must not be candidates
      for potentially curative therapy, such as HSCT, or they must have refused these alternative
      therapies. Full inclusion/exclusion criteria are available. History and physical examination,
      and laboratory and imaging analyses will be done within 14 days prior to registration.
      Intravenous ascorbic acid will be given in a dose based on the plasma vitamin C level to
      reach a level in the range of 300 to 350 mg/dL. Vitamin C infusions will be given three times
      a week on a schedule that allows at least 24 hours between each infusion, for a total of ten
      weeks (30 infusions). If disease progression occurs before or at the ten week assessment,
      then we discontinue protocol, based on futility. Toxicity and adverse events also will result
      in immediate discontinuation (details available in full protocol). If there is lack of
      disease progression or disease improvement, proceed and reassess again at 10 week intervals,
      for a total of three 10 week intervals. Initial criteria are based upon the criteria from the
      International Workshop to Standardize Criteria for Non-Hodgkin's Lymphoma (Cheson et al.,
      Report of an international workshop to standardize response criteria for non-Hodgkin's
      lymphoma, Journal of Clinical Oncology, 1999, Vol. 17, No4, 1244-1253); response for this
      study will utilize PET in accordance with revised criteria (Cheson et al. Revised response
      criteria for malignant lymphoma. J of Clin Oncol 2007; 25(5): 579-586). We select 20 patients
      as an appropriate study size to evaluate a true response rate to therapy, compared to just
      the observed response.
    

Eligibility criteria:

        Inclusion Criteria:

          -  Age greater than 18 years old

          -  Aggressive or very aggressive NHL

          -  Failed one or more therapies

          -  Patients must not have progressed within 60 days of last therapy

          -  Not received allogeneic stem cell transplant

          -  No reasonable standard therapeutic options available

          -  Glucose 6 phosphate dehydrogenase status normal

          -  ECOG performance status 0-2

          -  Normal creatinine and transaminase

          -  Women of child-bearing potential confirm negative pregnancy test

        Exclusion Criteria:

          -  Significant co-morbid disorders

          -  Significant psychiatric symptoms

          -  Smoking

          -  Excessive alcohol or drug use

          -  Enrollment in other experimental therapy

          -  Active infection

          -  Patients experiencing ongoing response to recent treatments

          -  Patients who have received chemotherapy within 30 days or biological therapy within 6
             weeks