# NCI Cancer Information Service

Source: https://onco.cc/collections/nci-cancer-information-service/  
OnCo record `nci-cancer-information-service` (Collection). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Call 1-800-4-CANCER and a trained NCI specialist answers your questions about any cancer, free, in English or Spanish.

## Summary

The Cancer Information Service is the National Cancer Institute's public help line. Information specialists answer questions about diagnosis, treatment, side effects, trials and NCI's own PDQ summaries, and can search for trials that match a caller's situation. It is free, confidential and open to anyone anywhere, though the trial search focuses on the US. OnCo's plain-language records draw on the same PDQ source the specialists use.

## Fields

- Kind: Collection
- Last checked: 2026-09-17
- Tags: free; helpline
- URL: https://www.cancer.gov/contact
- Holds: Free, confidential answers about cancer from NCI information specialists by phone (1-800-4-CANCER), live chat and email, in English and Spanish, including help finding clinical trials.

## Sources

- NCI Cancer Information Service: https://www.cancer.gov/contact

## Connected records

- collections: [American Cancer Society helpline](https://onco.cc/collections/acs-cancer-helpline/), [Breast Cancer Now helpline](https://onco.cc/collections/breast-cancer-now-helpline/), [Cancer Research UK nurse helpline](https://onco.cc/collections/cruk-nurse-helpline/), [Cancer Support Community](https://onco.cc/collections/cancer-support-community/), [CancerCare](https://onco.cc/collections/cancercare/), [Krebsinformationsdienst (KID)](https://onco.cc/collections/krebsinformationsdienst/), [Macmillan Support Line](https://onco.cc/collections/macmillan-support-line/), [NCI PDQ Cancer Information Summaries](https://onco.cc/collections/cancer-gov-pdq/)
- institutions: [National Cancer Institute (NIH)](https://onco.cc/institutions/nci/)

---
JSON: https://onco.cc/api/v1/entities/nci-cancer-information-service.json