Summary
Background
Solid organ recipients have a substantial risk of developing bladder cancer, with high-risk non-muscle-invasive bladder cancer (NMIBC) being the most frequent diagnosis. Theoretically, adjuvant bacillus Calmette–Guérin (BCG) therapy is contraindicated, but limited data indicate its feasibility. The objective of this study was to evaluate the safety and efficacy of BCG following solid organ transplantation.
Materials and methods
We reviewed the data of four solid organ recipients who received adjuvant BCG for high-risk NMIBC at our institution. Additionally, individual data of 12 patients were extracted from case series and case reports, which were identified through a systematic review of the literature. A meta-analysis was performed.
Results
Fourteen patients (88 %) had received a kidney, one a heart, and one a liver transplant. The median time from transplantation to bladder cancer was 60.5 months. The regimen of immunosuppression was not modified in 12 patients (75 %). Forty-two percent of patients did not receive prophylactic antibiotics, and 70 % had no side effects. Ten patients (63 %) experienced recurrence after a median of 14 months. Progression to muscle-invasive or metastatic disease was observed in two patients (13 %). Four patients (25 %) underwent radical cystectomy, and two patients died of the disease.
Conclusions
BCG therapy is a safe option for patients with high-risk NMIBC following solid organ transplantation. However, there is a substantial risk of recurrence and progression. Urologists and patients considering BCG therapy should be aware of this and may consider early cystectomy. There is no evidence to support the need for prophylactic antibiotics.
Zusammenfassung
Hintergrund
Organtransplantierte Patienten haben ein signifikantes Risiko, ein Urothelkarzinom der Harnblase (HCA) zu entwickeln. Dabei sind oberflächliche HCA mit hohem Rezidiv- und Progressionsrisiko der häufigste Befund. Die adjuvante Instillationstherapie mit Bacillus Calmette-Guérin (BCG) ist kontraindiziert, obwohl einige Autoren diese Therapie beschrieben haben. Ziel dieser Arbeit ist die Evaluation der Sicherheit und Effektivität von BCG bei organtransplantierten Patienten.
Material und Methoden
Es wurden die unizentrischen Daten von vier transplantierten Patienten erhoben, welche sich aufgrund eines HCA einer adjuvanten BCG-Instillationstherapie unterzogen. Eine systematische Literaturrecherche mit Meta-Analyse von insgesamt 16 Patienten wurde durchgeführt.
Ergebnisse
Bei 14 Patienten (88 %) bestand ein Zustand nach Nierentransplantation und bei jeweils einem nach Herz- bzw. Lebertransplantation. Das mediane Intervall vom Zeitpunkt der Transplantation bis zum HCA betrug 60,5 Monate. Die Immunsuppression wurde bei 12/16 Patienten (75 %) nicht modifiziert. Insgesamt erhielten 42 % keine begleitende Antibiotikatherapie und 70 % hatten keine therapie-assoziierten Nebenwirkungen. Zehn Patienten (63 %) entwickelten ein Tumorrezidiv nach einem medianen Zeitraum von 14 Monaten. Eine HCA-Progression in ein muskelinvasives oder metastasiertes Stadium wurde bei zwei Patienten (13 %) beobachtet. Vier Patienten (25 %) unterzogen sich letztlich einer radikalen Zystektomie und zwei Patienten verstarben am HCA.
Schlussfolgerungen
BCG-Instillationen sind eine sichere Therapieoption bei organtransplantierten Patienten mit HCA, wobei ein signifikantes Risiko für Tumorrezidiv und Progress vorliegt. Eine frühe Zystektomie sollte daher in Erwägung gezogen werden. Für eine begleitende Antibiotikatherapie gibt es keine Evidenz.
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Abbreviations
- BCG:
-
Bacillus Calmette–Guérin
- NMIBC:
-
Non-muscle-invasive bladder cancer
- UBC:
-
Urothelial bladder cancer
- TURBT:
-
Transurethral resection of bladder tumor
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The authors declare that there are no actual or potential conflicts of interest in relation to this article.
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Swietek, N., Waldert, M., Susani, M. et al. Intravesical bacillus Calmette-Guérin instillation therapy for non-muscle-invasive bladder cancer following solid organ transplantation. Wien Klin Wochenschr 125, 189–195 (2013). https://doi.org/10.1007/s00508-013-0343-1
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DOI: https://doi.org/10.1007/s00508-013-0343-1