New hope against superbug in cystic fibrosis: early antibiotic combo shows promise

NCT ID NCT03489629

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested a two-week course of antibiotics (TMP/SMX or minocycline) given twice to people with cystic fibrosis who had early MRSA lung infections. The goal was to see if this approach could clear the bacteria better than standard care. The trial included 37 participants aged 2 to 45 and measured how many had negative MRSA cultures after treatment.

What this could mean

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

Active substance

Trimethoprim Sulfamethoxazole (TMP/SMX) or Minocycline

What this could lead to

If successful, this approach could help clear MRSA infections earlier in people with cystic fibrosis, potentially reducing lung damage and hospital stays.

What could go wrong

This was a small, early-phase trial with only 37 participants. The results may not apply to everyone, and the antibiotics can have side effects like allergic reactions or stomach upset.

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.

cystic fibrosis Infections

As listed by the trial registrant

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

Contacts and locations

Locations

  • Cook Children's Medical Center

    Fort Worth, Texas, 76104, United States

  • Indiana University

    Indianapolis, Indiana, 46202, United States

  • N.C. Memorial Hospital and N.C. Children's Hospital

    Chapel Hill, North Carolina, 27599, United States

  • National Jewish Health

    Denver, Colorado, 80206, United States

  • St. Louis Children's Hospital

    St Louis, Missouri, 63110, United States

  • Texas Children's Hospital, Baylor College of Medicine

    Houston, Texas, 77030, United States

  • University of Michigan Health System

    Ann Arbor, Michigan, 48109, United States

  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390, United States

  • University of Washington Medical Center and Seattle Children's

    Seattle, Washington, 98195, United States