We have a vision to end cancer as we know it, for everyone. Learn more at cancer.org or by calling us at 1-800-227-2345 anytime. The American Cancer Society is the leading cancer-fighting organization with a vision to end cancer as we know it, for everyone. We are the only organization improving the lives of people with cancer and their families through advocacy, research, and patient support, to ensure that everyone has an opportunity to prevent, detect, treat, and survive cancer.