Papaverine

This phase I trial studies the side effects and best dose of papaverine (PPV) when given together with radiation therapy (RT) and tests how well it works in treating patients with rectal cancer that has spread to nearby tissue or lymph nodes (locally advanced). PPV is an enzyme inhibitor, and it may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. RT uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. Giving PPV with RT may be safe, tolerable, and/or effective in treating patients with locally advanced rectal cancer.

This phase I trial finds out the best dose, possible benefits and/or side effects of papaverine when given together with chemoradiation intreating patients with stage II-III non-small cell lung cancer. Papaverine targets mitochondrial metabolism to decrease the cancer growth process. Giving papaverine with chemoradiation may work best to treat patients with non-small cell lung cancer.