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Government Funding Lapse

Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit  cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

Learn About NLST

Information linked here describes the trial, explaining how and what data were collected. Links to main trial publications, protocol documents, and external web resources can also be found here.

  • Trial Summary
    This provides an overview of the study's protocol.
  • Data Collected
    This includes details about protocols for questionnaires, screening, and ascertainment of cancer and mortality data.
  • Biospecimens Collected
    This page describes biospecimens collected during the trial and how to apply for them.
  • Main Findings
    This page provides links to publications and web sites that summarize the main findings and the design of the study.