Multicenter assessment of neoadjuvant chemotherapy for muscle-invasive bladder cancer.
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Zargar Homayoun, Espiritu Patrick N, Fairey Adrian S, Mertens Laura S, Dinney Colin P, Mir Maria C, Krabbe Laura-Maria, Cookson Michael S, Jacobsen Niels-Erik, Gandhi Nilay M, Griffin Joshua, Montgomery Jeffrey S, Vasdev Nikhil, Yu Evan Y, Youssef David, Xylinas Evanguelos, Campain Nicholas J, Kassouf Wassim, Dall'Era Marc A, Seah Jo-An, Ercole Cesar E, Horenblas Simon, Sridhar Srikala S, McGrath John S, Aning Jonathan, Shariat Shahrokh F, Wright Jonathan L, Thorpe Andrew C, Morgan Todd M, Holzbeierlein Jeff M, Bivalacqua Trinity J, North Scott, Barocas Daniel A, Lotan Yair, Garcia Jorge A, Stephenson Andrew J, Shah Jay B, van Rhijn Bas W, Daneshmand Siamak, Spiess Philippe E, Black Peter C
Аннотация
OBJECTIVE: We aimed to assess real-world pathologic response rates to NAC with different regimens in a large, multicenter cohort.
DESIGN, SETTING, AND PARTICIPANTS: Data were collected retrospectively at 19 centers on patients with clinical cT2-4aN0M0 urothelial carcinoma of the bladder who received at least three cycles of NAC, followed by radical cystectomy (RC), between 2000 and 2013.
INTERVENTION: NAC and RC.
OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: The primary outcome was pathologic stage at cystectomy. Univariable and multivariable analyses were used to determine factors predictive of pT0N0 and ≤pT1N0 stages.
RESULTS AND LIMITATIONS: Data were collected on 935 patients who met inclusion criteria. GC was used in the majority of the patients (n=602; 64.4%), followed by MVAC (n=183; 19.6%) and other regimens (n=144; 15.4%). The rates of pT0N0 and ≤pT1N0 pathologic response were 22.7% and 40.8%, respectively. The rate of pT0N0 disease for patients receiving GC was 23.9%, compared with 24.5% for MVAC (p=0.2). There was no difference between MVAC and GC in pT0N0 on multivariable analysis (odds ratio: 0.89 [95% confidence interval, 0.61-1.34]; p=0.6).
CONCLUSIONS: Response rates to NAC were lower than those reported in prospective randomized trials, and we did not discern a difference between MVAC and GC. Without any evidence from randomized prospective trials, the best NAC regimen for invasive BCa remains to be determined.
PATIENT SUMMARY: There was no apparent difference in the response rates to the two most common presurgical chemotherapy regimens for patients with bladder cancer.