Can a cancer drug stop lung cancer before it starts?

NCT ID NCT03347838

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether the drug nivolumab (Opdivo) can reverse early, pre-cancerous changes in the lungs of current or former heavy smokers who are at high risk for lung cancer. Nineteen participants receive nivolumab to see if their lung tissue improves over six months. The goal is to prevent lung cancer from developing, but the trial is small and early-stage.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

nivolumab (Opdivo)

What this could lead to

If it works, this could point toward a way to reverse early lung changes before they become cancer, potentially preventing lung cancer in high-risk smokers.

What could go wrong

This is a very small early-phase trial with only 19 people. The drug may cause immune-related side effects, and it is not yet known if it will work or be safe long-term.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

head and neck cancer Head and Neck Neoplasms non-small cell lung carcinoma precancerous condition Tobacco Smoking lung cancer prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Denver VA Hospital

    Denver, Colorado, 80220, United States

  • University of Colorado Anschutz Medical Campus

    Aurora, Colorado, 80045, United States