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About this Website

This is the central website for the National Cancer Institute (NCI), the U.S. government’s principal agency for cancer research. NCI is mandated by U.S. law to disseminate information about cancer and cancer research.  This website serves as an important means to achieving that mission.

Information about Cancer
This website offers free, credible, current, comprehensive information about cancer prevention and screening, diagnosis and treatment, research across the cancer spectrum, clinical trials, and news and links to other NCI websites.

The information on this site is science-based, authoritative, and up-to-date. Medical experts, cancer researchers, and editors review the content before it is published to the website.

The Physician Data Query (PDQ®), NCI’s comprehensive cancer information database, forms the core of the information for patients and health professionals. It is regularly updated with the latest evidence-based information. The PDQ cancer information summaries are developed and maintained by the PDQ Editorial Boards.

NCI also provides cancer information in Spanish.

Information about NCI-Supported Research
This website also provides information about NCI-supported research and NCI’s grants and training programs. We report on ongoing progress in cancer research through news releases, research articles, and NCI’s Cancer Currents blog.

This information is reviewed by subject matter experts and updated regularly.

Links to other Websites
This website includes links to external websites. These links are for your convenience and to supplement NCI content. Selection of external links is at NCI discretion and does not imply endorsement of external organizations or their products and services. Our linking policy provides more information.

Usability of the Website
NCI regularly seeks input from users through the American Customer Satisfaction Index survey. We also conduct audience research and usability testing to enable us to present content in a way that meets the needs of our users.

Accessibility
NCI is committed to making this site itself accessible to all users, regardless of special need. The site is compatible with screen readers and other assistive devices. If you are using assistive devices and have difficulty accessing information on the site, please send an e-mail to cancergovstaff@mail.nih.gov and include the URL(s) of the page(s) you are having trouble with. See our Accessibility Policy page for more information.

Privacy and Security
This website's privacy and security policy is consistent with the website policies of other federal government agencies.

Content Reuse and Syndication
Most of the information on this website is in the public domain and is not subject to copyright restrictions. See our Copyright and Reuse of Graphics and Text page for more information.

Some of the information on the website is also available for use on other websites through our content dissemination program.

Feedback about the NCI Website
We welcome your feedback about the NCI website. If you have a question or comment about this site, please use our online contact form or write to us at cancergovstaff@mail.nih.gov.

  • Posted: April 10, 2015