The Cascade of Care in Management of Solid Organ Transplant Candidates With Latent Tuberculosis Infection

Author:

Chiu Chia-Yu1ORCID,Mahmood Maryam12,Brumble Lisa M.3,Vikram Holenarasipur R.4,Theel Elitza S.5,Beam Elena12

Affiliation:

1. Division of Public Health, Infectious Diseases, and Occupational Medicine, Department of Medicine, Mayo Clinic, Rochester, MN.

2. William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN.

3. Division of Infectious Diseases, Mayo Clinic, Jacksonville, FL.

4. Division of Infectious Diseases, Mayo Clinic, Phoenix, AZ.

5. Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.

Abstract

Background. Solid organ transplant (SOT) candidates should be screened and treated for latent tuberculosis infection (LTBI) to prevent tuberculosis (TB) reactivation after transplantation. We aimed to assess the steps from positive QuantiFERON (QFT) through LTBI treatment (cascade of care) in the SOT population. Methods. We conducted a retrospective study of SOT recipients older than 18 y with a positive QFT during pretransplant evaluation at the Mayo Clinic from January 2010 to June 2023. We analyzed each cascade step to determine associated drop-out factors for LTBI management. Results. Of 629 patients who had positive QFT results, 587 (93%) were evaluated by an infectious disease (ID) specialist, 478 (76%) were recommended to start LTBI treatment, 473 (75%) initiated LTBI treatment, and 457 (73%) completed LTBI treatment. LTBI treatment was not recommended in 109 patients evaluated by infectious disease, most of whom had previously received either LTBI (n = 72) or TB (n = 14) treatment. LTBI treatment was initiated before or after transplantation for 45% and 55% of patients, respectively. Isoniazid monotherapy was the most common regimen (92%), and adverse events were rare (7%). Seven patients developed active TB infection posttransplantation under various circumstances (3 without LTBI treatment, 1 during LTBI treatment, and 3 after completing LTBI treatment). Conclusions. Our findings demonstrate the variability of LTBI management in SOT recipients with positive QFT. When recommended, most patients completed LTBI treatment successfully. Nonetheless, active TB was noted regardless of whether patients received LTBI treatment. This study highlights the importance of optimizing LTBI management in this population.

Publisher

Ovid Technologies (Wolters Kluwer Health)

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