The Longitudinal Impact of Respiratory Viruses on Bronchiolitis Obliterans Syndrome After Allogeneic Hematopoietic Cell Transplantation (The RV-BOS Study) (RV-BOS)

May 7, 2026 updated by: Fred Hutchinson Cancer Center
This observational trial studies whether respiratory viruses are the cause of lung disease (bronchiolitis obliterans syndrome [BOS] or graft-versus-host disease of the lung) and changes in lung function in patients who have received a donor stem cell transplant. Patients with chronic graft-versus-host disease (cGVHD) are at higher risk of developing BOS. Studies have also shown that patients who had a respiratory viral illness early after their transplant are at higher risk of developing lung problems later on. Patients who are at risk and who already have BOS might benefit from being monitored more closely. Spirometry is a way of assessing a patient's lung function and is often used to diagnose lung disease. Spirometry measured at home with a simple handheld device may reduce the burden of performing pulmonary function testing at a facility and potentially help patients get their lung disease diagnosed and treated sooner.

Study Overview

Detailed Description

OUTLINE:

This is an observational study.

Patients undergo home spirometry measurements with a portable handheld spirometer and complete questionnaires weekly, a nasal swab for viral polymerase chain reaction (PCR) surveillance every 4 weeks, and undergo blood collection and nasal swabs every 3 months for up to 2 years. (The minimum required follow-up is 1 year, but there is an optional 1 year extension period.)

Study Type

Observational

Enrollment (Estimated)

250

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

    • California
      • Palo Alto, California, United States, 94304
        • Recruiting
        • Stanford Cancer Institute
        • Contact:
        • Principal Investigator:
          • Joe Hsu, MD, MPH
        • Principal Investigator:
          • Husham Sharifi, MD
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • Recruiting
        • University of Michigan Cancer Center
        • Principal Investigator:
          • Greg Yanik, MD
        • Contact:
    • Texas
      • Houston, Texas, United States, 77030
        • Recruiting
        • MD Anderson Cancer Center
        • Principal Investigator:
          • Amin Alousi, MD
        • Principal Investigator:
          • Ajay Sheshadri, MD
        • Contact:
    • Washington
      • Seattle, Washington, United States, 98109
        • Recruiting
        • Fred Hutch/University of Washington Cancer Consortium
        • Contact:
        • Principal Investigator:
          • Guang-Shing Cheng, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

8 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Allogeneic hematopoietic cell transplant recipients, age 8 and up.

Description

Inclusion Criteria:

  • Allogeneic HCT recipients with any indication, graft source, donor type, or conditioning regimen
  • Age 8 and older
  • COHORT 1 Inclusion criteria: One or more of the following clinical scenarios that encompass increased risk for BOS:

    1. A diagnosis of cGVHD as per NIH criteria through 5 years of diagnosis.

      i. New diagnosis of cGVHD within 3 months. This window may be extended by 30 days on a case-by-case basis.

      ii. A diagnosis of cGVHD ≥ 3 months and ≤ 5 years, with a new FEV1 decline of ≥10% in absolute value within 6 weeks compared with PFT done within the prior 2 years.

      iii. A recent documented respiratory infection of any etiology that has been clinically managed and stabilized or improving as determined by a clinician, within 8 weeks.

      iv. Progression of flare of chronic GVHD requiring an alteration in therapy as determined by a clinician, within 3 months.

    2. At 'Day 80' evaluation. D80 designates a posttransplant landmark, usually between 70-120 days, in which patients are evaluated for discharge back to community care. Patients with the following occurrences can be enrolled with 3 months of the Day 80 post-transplant evaluation.

      i. FEV1 decline of 10% in absolute values compared with pretransplant baseline. ii. Documented posttransplant RVI. iii. Lower respiratory tract disease (LRTD) of any etiology.

  • COHORT 2 inclusion criteria: Newly diagnosed BOS within 6 weeks of clinical recognition. This may include the following scenarios:

    1. "Early BOS", ie patients with new airflow decline and obstruction, not yet meeting the FEV1 cut-off of < 75% predicted by FEV1, in the absence of other etiologies as determined by clinical investigations including chest imaging and microbiologic studies.
    2. NIH-defined BOS:

      i. FEV1 < 75% predicted, with a decline in absolute FEV1 > 10% compared to pretransplant baseline or within the prior 2 years. Absolute decline in FEV1 should remain >10% after bronchodilator response.

      ii. FEV1/FVC or FEV1/VC <0.7, or Lower Limit of Normal as per accepted reference standards. Reference standards may include National Health and Nutrition Examination Survey III or Global Lung Initiative.

      iii. Absence of an alternative diagnosis, including COPD exacerbation, asthma, and active respiratory tract infection, as determined by appropriate clinical investigations that may include chest imaging, microbiologic cultures, and/or bronchoscopy.

      iv. One of two supportive features of BOS:

      • a. Evidence of air trapping by PFTs: RV>120%, or elevated RV/TLC (>20% of predicted value)
      • b. High resolution chest CT with inspiratory and expiratory cuts that show findings that are consistent with small airways disease including (but not exclusive of) air trapping, bronchial wall thickening, or bronchiectasis.
    3. BOS with atypical spirometric pattern

      i. FEV1 <80%, with a preserved FEV1/FVC ratio (≥0.7) and TLC ≥80% in the absence of other clinically determined lung disease.

    4. Clinical or suspected diagnosis of BOS not otherwise meeting above criteria.
  • Patient should have an Android or iOS-based smartphone with reliable access to Wi-Fi for data to be transmitted electronically. Android smartphones should have a software version of 4.0 or higher; iOS phones should have a version of 8.0 or higher.
  • Patient should be willing and able to communicate electronically in English or Spanish.

Exclusion Criteria:

  • Diagnosis of BOS at time of enrollment (Cohort 1 only)
  • Life expectancy < 2 years.
  • Diagnosis of active hematologic relapse or malignancy requiring active treatment that will affect that patient's ability to comply with study procedures.
  • Patient should not have a clinically acute active lower respiratory tract infection or a clinically acute active noninfectious respiratory condition (i.e. COPD exacerbation, pleural effusion) at the time of enrollment. However, patient may become eligible once these conditions have stabilized or resolved as noted above.
  • Inability or unwillingness to perform the study procedures, most of which are performed at home.
  • Lack of a personal iOS or Android smartphone.
  • Inability or unwillingness to communicate electronically.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Screening (spirometry measurements)
Patients undergo home spirometry measurements with a portable handheld spirometer and complete questionnaires weekly, a nasal swab for viral polymerase chain reaction (PCR) surveillance every 4 weeks, and undergo blood collection and nasal swabs every 3 months for up to 2 years.
Complete questionnaires
Undergo spirometry measurements
Other Names:
  • SPIROMETRY
Undergo nasal and/or oral swabs, and blood collection
Other Names:
  • Biological Sample Collection
  • Biospecimen Collected
  • Specimen Collection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence of bronchiolitis obliterans syndrome (BOS)
Time Frame: Up to 2 years
Diagnosed by National Institute of Health criteria or clinical diagnosis in the absence of alternative diagnosis.
Up to 2 years
Pulmonary impairment
Time Frame: Up to 2 years
Defined by temporal decline in forced expiratory volume in the first second (FEV1) determined by assessment of spirometry data.
Up to 2 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time from respiratory viral infection and chronic graft-versus-host disease to FEV1 decline
Time Frame: Up to 2 years
Up to 2 years
FEV1 (percent predicted) at clinical recognition of BOS
Time Frame: Up to 2 years
Up to 2 years
Incidence of asymptomatic and symptomatic viral infections
Time Frame: Up to 2 years
Will be determined by the longitudinal follow-up of this observational study.
Up to 2 years
Incidence of late onset noninfectious pulmonary complications
Time Frame: Up to 2 years
Will be determined by the longitudinal follow-up of this observational study. Follow-up of clinical encounters will provide an epidemiology of the incidence of noninfectious and infectious pulmonary complications.
Up to 2 years
Incidence of non-viral infectious pulmonary complications
Time Frame: Up to 2 years
Will be determined by the longitudinal follow-up of this observational study. Follow-up of clinical encounters will provide an epidemiology of the incidence of noninfectious and infectious pulmonary complications.
Up to 2 years
Establishment of a biorepository that includes blood samples, respiratory viral samples, and nasal microbiome samples from patients with clinically recognized BOS
Time Frame: Up to 2 years
The biorepository including self-collected samples will be catalogued and organized in a central location that can be easily accessed through a gatekeeper system.
Up to 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Guang-Shing Cheng, MD, Fred Hutch/University of Washington Cancer Consortium

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 30, 2022

Primary Completion (Estimated)

December 31, 2027

Study Completion (Estimated)

June 30, 2028

Study Registration Dates

First Submitted

January 20, 2022

First Submitted That Met QC Criteria

February 16, 2022

First Posted (Actual)

February 22, 2022

Study Record Updates

Last Update Posted (Actual)

May 11, 2026

Last Update Submitted That Met QC Criteria

May 7, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Hematopoietic and Lymphoid Cell Neoplasm

Clinical Trials on Questionnaire Administration

Subscribe