Last updated on October 2018

Radiation Therapy and Cisplatin With or Without Triapine in Treating Patients With Newly Diagnosed Stage IB2 II or IIIB-IVA Cervical Cancer or Stage II-IVA Vaginal Cancer


Brief description of study

This randomized phase II trial studies radiation therapy and cisplatin with triapine to see how well they work compared to the standard radiation therapy and cisplatin alone in treating patients with newly diagnosed stage IB2, II, or IIIB-IVA cervical cancer or stage II-IVA vaginal cancer. Radiation therapy uses high energy protons to kill tumor cells and shrink tumors. Drugs used in chemotherapy, such as cisplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Triapine may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet known whether radiation therapy and cisplatin are more effective with triapine in treating cervical or vaginal cancer.

Detailed Study Description

PRIMARY OBJECTIVES:

I. To evaluate the efficacy of the experimental regimen of triapine (3AP), cisplatin, and radiation to increase progression-free survival relative to the standard/control regimen of cisplatin and radiation in women with uterine cervix and vaginal cancer.

SECONDARY OBJECTIVES:

I. To determine the post-therapy 3-month fludeoxyglucose F-18 (18F-FDG) positron emission tomography (PET)/computed tomography (CT) metabolic complete rate of response rate in the cervix and vaginal by treatment arm.

II. To determine overall survival after triapine-cisplatin radio-chemotherapy and cisplatin radio-chemotherapy.

III. To evaluate incidence and severity of hematologic and gastrointestinal (GI) adverse events by radiation modality; image guided intensity modulated radiation therapy (IG-IMRT) versus conventional pelvic radiotherapy.

IV. To summarize and compare differences in acute adverse events (Common Terminology Criteria for Adverse Events [CTCAE], version [v]4.0) by treatment arm and radiation modality.

V. To summarize and compare differences in chronic or late (>= 30-days from off study treatment date) adverse events (CTCAE, v4.0) by treatment arm and by radiation modality.

TERTIARY OBJECTIVES:

I. To determine peripheral blood methemoglobin proportion before and after triapine infusion (optional for Arm 2 patients).

II. To explore whether knowledge-based planning (KBP) can improve IG-IMRT plans compared to plans that would have been delivered without KBP, estimate the resulting toxicity reduction using normal tissue complication probability (NTCP) models, and determine whether KBP should be a requirement for future IG-IMRT protocols.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive cisplatin intravenously (IV) over 90 minutes on days 2, 9, 16, 23, 30, (and day 36 or 37 at the treating physician's discretion). Patients then undergo external beam radiation therapy (EBRT) (either conventional radiation therapy [RT] or intensity modulated radiation therapy [IMRT]) once daily (QD) 5 days a week for 25 fractions followed by low dose rate (LDR) or high dose rate (HDR) brachytherapy according to institution's standards. Treatment continues in the absence of disease progression or unacceptable toxicity.

ARM II: Patients receive cisplatin and undergo EBRT followed by brachytherapy as in Arm I. Patients also receive triapine IV over 2 hours on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, 26, 29, 31, and 33. Treatment continues in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up at 1 and 3 months, every 3 months for 2 years, and then every 6 months for 3 years.

The patient data from NCI #9434 will be merged with NRG-GY006 per the Protocol Analysis Plan.

Clinical Study Identifier: NCT02466971

Contact Investigators or Research Sites near you

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San Juan Community Oncology Group

San Juan, Puerto Rico
2.27miles
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San Juan City Hospital

San Juan, Puerto Rico
6.82miles
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Recruitment Status: Open


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