Donor-derived cell-free DNA is becoming more available but is not as helpful as in the other solid organ transplant recipient, so there is no clear consensus at this time to guide surveillance bronchoscopies in lung transplant recipients.

I believe there's a fair bit of practice variation by center. Our program does not perform routine surveillance bronchoscopies. We do have a low threshold in patients with clinical symptoms or concerning findings on radiograph/spirometry, and we are currently checking dd-cfDNA at the time of these "...