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Every explanation is grounded in trusted National Cancer Institute resources.

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Learning paths, quizzes, flashcards, and a glossary — free for everyone.

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National Cancer Information Foundation has applied for recognition as a tax-exempt organization under Section 501(c)(3). IRS determination is pending. If approved by the IRS, exemption is generally recognized back to the organization's formation date. Until approval, donors do not have advance assurance that contributions will be tax-deductible.

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Common Questions

Is my donation tax deductible?

National Cancer Information Foundation has applied for recognition as a tax-exempt organization under Section 501(c)(3). IRS determination is pending. If approved by the IRS, exemption is generally recognized back to the organization’s formation date. Until approval, donors do not have advance assurance that contributions will be tax-deductible.

How will my gift be used?

Donations support the creation and maintenance of free educational content — plain-language explanations, learning tools, and the hosting that keeps them online with no ads.

Cancer Explained is an independent educational project. It is not affiliated with or endorsed by the National Cancer Institute. Donations support the creation and maintenance of free educational content.

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