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Assessing the Efficacy and Safety of IV Vitamin C in Combination With Standard Chemotherapy for Pancreatic Ca

Phase II, Open Label Study of Intravenous Ascorbic Acid in Combination With Gemcitabine and Erlotinib in the Treatment of Metastatic Pancreatic Cancer

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01555489
Enrollment
11
Registered
2012-03-15
Start date
2011-10-31
Completion date
2016-01-31
Last updated
2025-05-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stage IV Pancreatic Cancer

Keywords

Pancreatic Neoplasms, Pancreatic Cancer cells, Digestive System Neoplasms, Neoplasms by Site, Neoplasms, Endocrine Gland Neoplasms, Digestive System Diseases, Pancreatic Diseases, Endocrine System Diseases, Ascorbic Acid, Gemcitabine Vitamins, Vitamin C, Antioxidants, Molecular Mechanisms of Pharmacological Action, Pharmacologic Actions, Protective Agents, Physiological Effects of Drugs, Micronutrients, Growth Substances, Erlotinib, Integrative Medicine, Alternative Medicine, Complementary Medicine

Brief summary

The investigators recently completed a phase I study of intravenous ascorbic acid (IV AA) plus standard chemotherapy (gemcitabine and erlotinib) in patients with metastatic pancreatic cancer. The investigators determined that the target ceiling dosage of 100 grams of ascorbic acid is safe when given with the chemotherapy. This Phase II trial is an initial test of efficacy of the 100 gram dose of ascorbic acid, which will be given with the same standard chemotherapy. This open label study will recruit up to 35 subjects with metastatic pancreatic cancer who will receive ascorbic acid combined with gemcitabine and erlotinib as front-line treatment. The phase I data suggests that ascorbic acid when given in combination with gemcitabine and erlotinib may result in some tumor response, and the goal of this study is to better evaluate the response and confirm initial safety data

Detailed description

Intravenous high dose ascorbic acid is a widely used alternative cancer treatment. Patients will receive standard care gemcitabine/erlotinib for treatment of their metastatic pancreatic adenocarcinoma. They will be closely monitored for disease response/ progression. If vitamin C has a beneficial effect on tumour cells, patients may experience a regression of tumor or tumor markers. Additional benefits include scans at no charge to the patient. This study requires several days of treatment per week and treatments are given in two different locations. The intravenous vitamin C treatments are given 3 times per week, these are given every week for an initial cycle of 15 weeks.

Interventions

DRUGAscorbic Acid

3x per week

Sponsors

Thomas Jefferson University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Males and females of age ≥ 18 * Histologically or cytologically confirmed pancreatic adenocarcinoma that has metastatic disease measurable by CT, MRI, or PET * Subjects with unresectable pancreatic cancer who have had surgery (exploratory laparotomy, biliary, gastrointestinal bypass) are eligible, if the subject has fully recovered from surgery and ≥ 14 days has passed since the operation. Patients with history of pancreatoduodenectomy are eligible provided that there is radiographically documented disease recurrence. * ECOG performance status 0-2 * Laboratory values that would not prevent the patient from receiving chemotherapy as determined by the PI or study oncologist * G6PD status ≥ lower limit of normal * Serum creatinine ≤ 2.0 mg/dL

Exclusion criteria

* Islet cell or acinar cell carcinoma or cystadenocarcinoma * History or known presence of central nervous system (CNS) metastases * History of another primary cancer, except: * Curatively treated cervical carcinoma in situ, or * Curatively resected non-melanomatous skin cancer, or * Other primary solid tumor curatively treated with no known active disease present and no treatment administered for ≥ 3 years prior to enrollment * Other concurrent anticancer chemotherapy * Prior radiotherapy ≤ 14 days, or if subjects have not recovered from radiotherapy * Uncontrolled seizure disorder or other serious neurological diseases * Any co-morbid disease that would increase risk of toxicity as determined by PI * Only locally advanced disease * Prior treatment with gemcitabine (for metastatic pancreatic cancer) * Subjects requiring chronic use of immunosuppressive agents (eg, methotrexate, cyclosporine, corticosteroids) * Recent infection requiring a course of systemic anti-infection that was completed ≤ 14 days prior to enrollment (exception can be made at the judgment of the PI for oral treatment of an uncomplicated urinary tract infection (\[UTI\]) * History of any medical or psychiatric condition or addictive disorder, or laboratory abnormality that, in the opinion of the PI, may increase the risks associated with study participation or study drug administration or may interfere with the conduct of the study or interpretation of study requirements * Subject unwilling or unable to comply with study requirements * Subject who is pregnant or breast feeding * Known positive test(s) for human immunodeficiency virus infection, hepatitis C virus, chronic active hepatitis B infection * Documented history of alcohol, cocaine or intravenous drug abuse ≤ 6 months of enrollment

Design outcomes

Primary

MeasureTime frameDescription
Safety of Ascorbic Acid in Combination With Gemcitabine and Erlotinib for Stage IV Pancreatic Cancer15 weeksSafety: to assess safety of IVAA in combination with gemcitabine and erlotinib by evaluating the number of adverse events and serious adverse events occurring among study participants.

Secondary

MeasureTime frameDescription
Evaluate Quality of Life Using Functional Assessment of Cancer Therapy-General (FACT-G) Quality Assessment Instrument15 weeks1\) To evaluate quality of life using Functional Assessment of Cancer Therapy-General (FACT-G) quality assessment instrument. The FACT-G questionnaire as well as the Patient Reported Outcomes Measurement Information System (PROMIS-29) will be used to assess quality-of-life longitudinally. Quality-of-life scores obtained from the FACT-G and PROMIS-29 will be summarized at multiple time points using means and standard deviations.

Countries

United States

Participant flow

Participants by arm

ArmCount
Ascorbic Acid, Gemcitabine & Erlotinib
Ascorbic Acid (50-100g, 3x weekly) Standard Chemotherapy of Gemcitabine and Erlotinib for Pancreatic Cancer Ascorbic Acid: 3x per week
11
Total11

Baseline characteristics

CharacteristicAscorbic Acid, Gemcitabine & Erlotinib
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
5 Participants
Age, Categorical
Between 18 and 65 years
6 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
11 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
10 Participants
Region of Enrollment
United States
11 participants
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
8 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 11
other
Total, other adverse events
11 / 11
serious
Total, serious adverse events
1 / 11

Outcome results

Primary

Safety of Ascorbic Acid in Combination With Gemcitabine and Erlotinib for Stage IV Pancreatic Cancer

Safety: to assess safety of IVAA in combination with gemcitabine and erlotinib by evaluating the number of adverse events and serious adverse events occurring among study participants.

Time frame: 15 weeks

Population: The trial was closed due to lack of accrual. The standard of care treatment that was part of the study as initially written changed to a different chemotherapy regimen thus not enabling the team to enroll additional patients. The data were not collected.

Secondary

Evaluate Quality of Life Using Functional Assessment of Cancer Therapy-General (FACT-G) Quality Assessment Instrument

1\) To evaluate quality of life using Functional Assessment of Cancer Therapy-General (FACT-G) quality assessment instrument. The FACT-G questionnaire as well as the Patient Reported Outcomes Measurement Information System (PROMIS-29) will be used to assess quality-of-life longitudinally. Quality-of-life scores obtained from the FACT-G and PROMIS-29 will be summarized at multiple time points using means and standard deviations.

Time frame: 15 weeks

Population: The trial was closed due to lack of accrual. The standard of care treatment that was part of the study as initially written changed to a different chemotherapy regimen thus not enabling the team to enroll additional patients. The data were not collected.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026