Clinical trial Recruiting at 1 site Observational

Investigating abnormal cells in patients with bronchiolitis obliterans syndrome

Official title: Evaluating Clonogenic Epithelial Cell Populations in Patients With Bronchiolitis Obliterans Syndrome

Run by M.D. Anderson Cancer Center · NCT04604522 · Data updated 2026-11-12

This study is testing whether looking at certain abnormal cells in the blood and lungs of patients with bronchiolitis obliterans syndrome after a transplant can help doctors find this condition earlier.

More Bronchiolitis Obliterans trials

Quick facts

Study typeObservational
SexAll
Enrollment15 (estimated)
SponsorM.D. Anderson Cancer Center
Academic / other
Locations1 site (Houston, Texas)
StatusRecruiting
StartedAugust 27, 2020
Main results expectedMarch 31, 2028
Study endsMarch 31, 2028
Registry record updatedOctober 9, 2026
Trial IDNCT04604522 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients who have received allogeneic hematopoietic cell transplants or lung transplants and are undergoing bronchoscopy.

Probably not a fit

Patients without a history of bronchiolitis obliterans syndrome or those not undergoing bronchoscopy may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates abnormal clonogenic epithelial cells in patients with bronchiolitis obliterans syndrome who have undergone donor stem cell or lung transplants. It aims to characterize the phenotypes of these cells in patients at MD Anderson Cancer Center and Houston Methodist. Participants will provide blood samples and undergo airway brushings during standard bronchoscopy procedures, with medical records reviewed for additional data. The study will follow patients for up to one year to gather insights on early detection of bronchiolitis obliterans syndrome.

Why it matters

Potential benefit: If successful, this study could lead to earlier detection of bronchiolitis obliterans syndrome in transplant patients.

How similar studies have gone: While this approach is novel in the context of bronchiolitis obliterans syndrome, similar studies have shown promise in understanding cell populations in transplant patients.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Allo-HCT recipients undergoing a bronchoscopy at MDACC who consent to undergoing study airway brushings in addition to clinically indicated bronchoscopic procedures (e.g. bronchoalveolar lavage)

  * 5 patients with advanced BOS - forced expiratory volume in one second (FEV1) =\< 75% predicted and meeting other National Institutes of Health (NIH) criteria (FEV1/forced vital capacity \[FVC\] ratio 0.7, presence of air trapping or graft versus host disease \[GVHD\] of another organ)
  * 5 patient with early BOS - at least 10% decline in FEV1 from baseline values, with FEV1 \>= 75% predicted, and 1 high-risk feature:

    * Active systemic chronic GVHD with new early airflow obstruction OR
    * Respiratory viral infection in last three months with resolution of viral symptoms but new airflow obstruction
  * 3 patients with no pulmonary impairment (FEV1 within 5% of baseline values)
* Lung allograft recipients undergoing a bronchoscopy at Houston Methodist who consent to undergoing study airway brushing sin addition to clinically indicated bronchoscopy procedures

  * 5 patients with BOS Stage 2 or higher (\>= 35% decline in FEV1 from baseline values)
  * 5 patient with BOS Stage 0p or 1 (10-35% decline in FEV1 from baseline values)
  * 3 patients undergoing screening bronchoscopy without decline in FEV1
  * patients with undiagnosed lung cancer and chronic obstructive pulmonary disease diagnosed by pulmonary function testing (FEV1/FVC less than the lower limit of normal with \>20 pack-year history of smoking)

Exclusion Criteria:

* Bronchoscopy performed on emergency basis for life-threatening issues as opposed to routine diagnostic testing
* Patient unwilling to give consent for study airway brushings

Where it's running

  • M D Anderson Cancer Center
    Houston, Texas, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.