Use of Adjuvant Chemotherapy in Patients with Advanced Bladder Cancer after Neoadjuvant Chemotherapy.
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ABSTRACT:
SUBMITTER: Sui W
PROVIDER: S-EPMC5545911 | biostudies-other | 2017 Jul
REPOSITORIES: biostudies-other
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Project description:BackgroundBreast cancer is one of the most common challenges for women's health. Until now, neoadjuvant chemotherapy is a standard approach in locally advanced breast cancer (LABC), as it increases the probability of breast-conserving surgery (BCS). This study aimed to compare the survival rate in neoadjuvant and adjuvant groups to suggest a better treatment strategy for locally advanced breast cancer.MethodsThe study was conducted between 2009 and 2019 on 845 LABC patients at the Cancer Research Center of Shahid Beheshti University of Medical Sciences in Iran. All patients with LABC at stages 3A, 3B, and two were evaluated for treatment with adjuvants (n = 520 female patients) and neoadjuvant (n = 320 female patients) treatment strategies. Patients were followed up for at least 120 months. The Kaplan-Meier method calculated the survival rate using SPSS version 23 software.ResultThe 5 and 10 years survival rates of neoadjuvant and adjuvant groups were 87 ± 0.04, 80 ± 0.07% and 87 ± 0.02, 83 ± 0.03%, respectively. Statistical analysis results with the mentioned treatment strategies did not show any significant difference in overall survival.ConclusionThe result of this study on LABC patients demonstrated that compared to surgery first following adjuvant chemotherapy, the neoadjuvant chemotherapy has several benefits, including downstaging and more BCS, with no statistically significant difference in the overall survival rate of the patients.
| S-EPMC9758373 | biostudies-literature
Project description:BackgroundThere is currently no consensus regarding the optimal number of chemotherapy cycles to be administered before and after interval debulking surgery (IDS) in patients with advanced ovarian cancer. This study aimed to evaluate the impact of the number of neoadjuvant chemotherapy (NAC) and postoperative adjuvant chemotherapy (POAC) cycles on the survival of patients with advanced ovarian cancer undergoing NAC/IDS/POAC.MethodsWe retrospectively reviewed data from 203 patients who underwent NAC/IDS/POAC at Yonsei Cancer Hospital between 2006 and 2016. All patients underwent taxane plus carboplatin chemotherapy for NAC and POAC. The patient outcomes were analyzed according to the number of NAC, POAC, and total chemotherapy (NAC+POAC) cycles.ResultsPatients who received fewer than 6 cycles of total chemotherapy (n = 8) had poorer progression-free survival (PFS) and overall survival (OS) than those completing at least 6 cycles (p = 0.005 and p<0.001, respectively). Among patients who completed at least 6 cycles of total chemotherapy (n = 189), Kaplan-Meier analysis revealed no significant difference in either PFS or OS according to the number of NAC cycles (1-3 vs. ≥4; p = 0.136 and p = 0.267, respectively). Among patients who experienced complete remission after 3 cycles of POAC (n = 98), the addition of further POAC cycles did not improve the PFS or OS (3 vs. ≥4; p = 0.641 and p = 0.104, respectively).ConclusionIDS after 4 cycles of NAC may be a safe and effective option when completing 6 cycles of total chemotherapy. Furthermore, the addition of more than 3 cycles of POAC does not appear to influence the survival of patients achieving completion remission after 3 cycles of POAC.
| S-EPMC5584794 | biostudies-literature
Project description:PurposePrevious studies have noted increased utilization of perioperative chemotherapy over time. The goal of this study was to determine trends in perioperative chemotherapy use within a contemporary population.Materials and methodsThe National Cancer Database was queried for patients diagnosed with cT2-4N0M0 urothelial muscle invasive bladder cancer from 2011 to 2015 and underwent subsequent radical cystectomy. We retrospectively analyzed factors associated with perioperative chemotherapy and evaluated overall treatment trends in the use of neoadjuvant and adjuvant chemotherapy. Linear regression, logistic regression, Cox regression, and Kaplan-Meier analysis were performed.ResultsIn total, 7,101 patients met inclusion criteria for analysis. The use of perioperative chemotherapy increased from 46.4% in 2011 to 57.2% in 2015 (p=0.003). Neoadjuvant chemotherapy use increased from 22.9% to 32.3% (p=0.007) over the time period analyzed, while adjuvant chemotherapy use experienced no significant change (23.5% to 24.9%, p=0.182). Logistic regression demonstrated that increased age and Charlson Comorbidity Index were predictors of not receiving chemotherapy (p<0.05), while those with increasing T stage, income above $48,000, and insurance other than Medicaid or Medicare were more likely to receive perioperative chemotherapy (p<0.05). Kaplan-Meier analysis revealed patients receiving neoadjuvant chemotherapy had the best 5-year overall survival at 48.3% compared to adjuvant chemotherapy (42.6%) or no chemotherapy (37.8%) (p<0.001).ConclusionsThe increasing use of perioperative chemotherapy noted in prior studies has continued through 2015. Neoadjuvant chemotherapy appears to drive this increase while adjuvant chemotherapy utilization remains unchanged. Clinical and socioeconomic factors affect utilization of perioperative chemotherapy.
| S-EPMC7606117 | biostudies-literature
Project description:BackgroundNeoadjuvant chemotherapy is underutilized in bladder cancer patients who undergo radical cystectomy. However, the quality of regimens used in this setting remains largely unknown.ObjectiveTo determine utilization treatment patterns and survival outcomes according to regimens administered.Design, setting, and patientsWe used the Surveillance, Epidemiology and End Results (SEER)-Medicare linked database to identify patients diagnosed with clinical stage TII-IV bladder cancer from January 1, 2001 to December 31, 2011.Outcome measurements and statistical analysisTemporal trends were assessed using the Cochran-Armitage test. Multivariable logistic regression models were used to identify predictors for neoadjuvant chemotherapy use. Cox proportional hazards models were used to compare overall survival according to regimens administered.Results and limitationsOf 2738 patients treated with radical cystectomy, 344 (12.6%) received neoadjuvant chemotherapy. The agents most commonly used were gemcitabine (72.3%), cisplatin (55.2%), and carboplatin (31.1%). The regimens most commonly used were gemcitabine-cisplatin (45.3%), gemcitabine-carboplatin (24.1%), and methotrexate, vinblastine, doxorubicin, and cisplatin (M-VAC; 6.7%). Use of neoadjuvant chemotherapy more than tripled during the study period, from 5.7% in 2001 to 17.3% in 2011 (p<0.001). The quality of the regimen administered impacted survival outcomes, as M-VAC use was significantly associated with better overall survival among patients diagnosed with stage II bladder cancer (hazard ratio 0.24, 95% confidence interval 0.07-0.86; p=0.030]. Limitations include the limited ability of retrospective analysis to control for selection bias.ConclusionsNeoadjuvant chemotherapy was underused, and the quality of neoadjuvant chemotherapy regimens administered for bladder cancer was inconsistent with guideline recommendations. These findings are important when interpreting population-based data on the use of chemotherapy and extrapolating survival outcomes.Patient summaryIn a large population-based study, 12.6% of patients undergoing radical cystectomy for bladder cancer received neoadjuvant chemotherapy, half of whom received guideline-recommended regimens. The quality of the regimen impacted survival outcomes, as use of cisplatin-based chemotherapy was significantly associated with better overall survival among patients diagnosed with stage II bladder cancer. However, <1% of radical cystectomy patients received this regimen.
| S-EPMC8362849 | biostudies-literature
Project description:BackgroundSurvival with locally advanced bladder cancer (LABC) following radical cystectomy (RC) remains poor. Although adjuvant chemotherapy (AC) is standard of care, one small, randomized trial has suggested a potential survival benefit when combined with post-operative radiotherapy (PORT).ObjectiveWe examined the association of AC + PORT with overall survival (OS) in patients with LABC after RC.MethodsUsing a prior phase 2 trial to inform design, we conducted observational analyses to emulate a hypothetical target trial of patients aged 18-79 years with pT3-4 Nany M0 or pTany N1-3 M0 urothelial bladder carcinoma following RC who were treated with AC (multiagent chemotherapy within 3 months of RC) with or without PORT (≥45 Gy to the pelvis) from 2006-2015 in the NCDB. Patients who received preoperative chemotherapy or radiotherapy were excluded. The associations of treatment with OS were evaluated using multivariable Cox regression.Results1,684 patients were included, with 66 receiving AC + PORT and 1,618 AC alone. Compared to patients treated with AC alone, those treated with AC + PORT were more likely to have pT4 disease (52% vs 26%; p < 0.01), positive surgical margins (44% vs 17%; p < 0.01), and be treated at a non-academic facility (75% vs 53%; p < 0.01). Crude 5-year OS was 19% for AC + PORT versus 36% for AC alone (p = 0.01). Adjusted 5-year OS was 33% for AC + PORT versus 36% for AC alone (p = 0.49). After adjusting for baseline characteristics including pathologic features, AC + PORT was not associated with improved OS compared to AC alone (HR 1.11; 95% CI 0.82-1.51).ConclusionsAlthough infrequently utilized, the addition of radiotherapy to AC is not associated with improved OS in LABC. These results highlight the need for prospective trials to better define the potential benefits from PORT with regard to symptomatic progression and oncologic outcomes.
| S-EPMC11181795 | biostudies-literature
Project description:Background: MIBC is an aggressive disease, with 5-year survival rates ranging from 36 to 48% for p T3/p T4/p N+tumors. Perioperative treatment can improve overall survival, with more robust evidence in favor of neoadjuvant chemotherapy. Few randomized studies have compared neoadjuvant and adjuvant therapy in bladder cancer. Consequently, it has been difficult to establish the benefit of adjuvant chemotherapy (AC) in MIBC. Methods: Data from patients with muscle invasive bladder cancer (>pT2) collected from 2005 to 2012 within the RISC data base (Retrospective International Study of Cancers of the Urothelial Tract) were evaluated. Overall survival (OS), cancer specific survival (CSS), and disease-free survival (DFS) between NC and AC generated using the Kaplan-Meier method were compared for MIBC by log-rank test. All patients in this analysis received either NC or AC. Results: A total of 656 patients with MIBC (325 treated with AC and 331 with NC) were analyzed. The median DFS was 34.6 months (95% CI:25.3-43.9) for NC vs. 24.9 months (95% CI: 19.4-30.5) with AC, with a reduction in the risk of disease progression of 21% in favor of NC (HR: 0.78, 95% CI: 0.63-0.96, P = 0.02). There were no significant differences in terms of CSS (HR: 1.06, 95% CI: 0.79-1.43, P: 0.70), and OS (HR: 1.08, 95% CI: 0.83-1.39, P = 0.57). Conclusions: This study demonstrates superiority in DFS for NC compared to AC. The positive prognostic impact of complete pathological response to NC was confirmed.
| S-EPMC6252384 | biostudies-literature
Project description:BackgroundGuidelines recommend neoadjuvant chemotherapy (NAC) for the treatment of nonmetastatic muscle-invasive bladder cancer (MIBC). NAC is, however, underutilized in practice because of its associated limited overall survival (OS) benefit and significant treatment-related toxicity. We hypothesized that the absence of circulating tumour cells (CTCs) identifies MIBC patients with such a favourable prognosis that NAC may be withheld.Patients and methodsThe CirGuidance study was an open-label, multicentre trial that included patients with clinical stage T2-T4aN0-N1M0 MIBC, scheduled for radical cystectomy. CTC-negative patients (no CTCs detectable using the CELLSEARCH system) underwent radical surgery without NAC; CTC-positive patients (≥1 detectable CTCs) were advised to receive NAC, followed by radical surgery. The primary endpoint was the 2-year OS in the CTC-negative group with a prespecified criterion for trial success of ≥75% (95% confidence interval (CI) ±5%).ResultsA total of 273 patients were enrolled. Median age was 69 years; median follow-up was 36 months. The primary endpoint of 2-year OS in the CTC-negative group was 69.5% (N = 203; 95% CI 62.6%-75.5%). Two-year OS was 58.2% in the CTC-positive group (N = 70; 95% CI 45.5%-68.9%). CTC-positive patients had a higher rate of cancer-related mortality [hazard ratio (HR) 1.61, 95% CI 1.05-2.45, P = 0.03] and disease relapse (HR 1.87, 95% CI 1.28-2.73, P = 0.001) than CTC-negative patients. Explorative analyses suggested that CTC-positive patients who had received NAC (n = 22) survived longer than CTC-positive patients who had not (n = 48).ConclusionThe absence of CTCs in MIBC patients was associated with improved cancer-related mortality and a lower risk of disease relapse after cystectomy; however, their absence alone does not justify to withhold NAC. Exploratory analyses suggested that CTC-positive MIBC patients might derive more benefit from NAC.Trial registrationNetherlands Trial Register NL3954; https://www.trialregister.nl/trial/3954.
| S-EPMC9058916 | biostudies-literature
Project description:Objectives. Level 1 evidence supports the use of neoadjuvant chemotherapy (NAC) to improve overall survival in muscle invasive bladder cancer; however utilization rates remain low. The aims of our study were to determine factors associated with NAC use, to more clearly define reasons for low utilization, and to determine the current rate of NAC use among urologic oncologists. Materials and Methods. Active members of the Society for Urologic Oncology were provided a 20-question survey. Descriptive statistical analysis was conducted for each question and univariate analysis was performed. Results. We achieved a response rate of 21%. Clinical T3/T4 disease was the most often selected reason for recommending NAC (87%). Concerns with recommending NAC were age and comorbidities (54%) followed by delay in surgery (35%). An association was identified between urologic oncologists who discussed NAC with >90% of their patients and medical oncologists "always" recommending NAC (P = 0.0009). NAC utilization rate was between 30 and 57%. Conclusions. Amongst this highly specialized group of respondents, clinical T3-T4 disease was the most common reason for implementation of NAC. Respondents who frequently discussed NAC were more likely to report their medical oncologist always recommending NAC. Reported NAC use was higher in this surveyed group (30-57%) compared with recently published rates.
| S-EPMC4058463 | biostudies-literature
Project description:Presently, surgery is the only treatment approach for gastric cancer and improving the prognosis of locally advanced gastric cancer is one of the key factors in promoting gastric cancer survival benefit. The MAGIC study was the first to demonstrate the efficacy of neoadjuvant chemotherapy (NAC) in European countries. In recent years, several clinical trials have provided evidence for the use of NAC in Asian patients with locally advanced gastric cancer. However, clinical practice guidelines vary between Asian and non-Asian populations. Optimal NAC regimens, proper target populations, and predictors of NAC outcomes in Asian patients are still under investigation. Herein, we summarized the current progress in the administration of NAC in Asian patients with gastric cancer.
| S-EPMC9911622 | biostudies-literature
Project description:Importance:Locoregional failure for patients with locally advanced bladder cancer (LABC) after radical cystectomy (RC) is common even with chemotherapy and is associated with high morbidity and mortality. Adjuvant radiotherapy (RT) can decrease locoregional failure but has not been studied in the chemotherapy era. Objective:To investigate if adjuvant sequential RT plus chemotherapy can improve locoregional recurrence-free survival (LRFS) compared with adjuvant chemotherapy alone. Design, Setting, and Participants:A randomized phase 3 trial was opened to compare adjuvant RT vs sequential chemotherapy plus RT after RC for LABC, but a third arm was added later as a randomized phase 2 trial to compare chemotherapy plus RT vs adjuvant chemotherapy alone, an emerging standard. The intent-to-treat phase 2 trial reported herein enrolled patients from December 2002 to July 2008. Data were analyzed from August 3, 2015, to January 6, 2016. Routine follow-up and surveillance pelvic computed tomographic (CT) scans every 6 months during the first 2 years were performed. The setting was an academic center. Patients with bladder cancer 70 years or younger having 1 or more risk factors (≥pT3b, grade 3, or positive nodes) with negative margins after radical cystectomy plus pelvic lymph node dissection were eligible. Patients had Eastern Cooperative Oncology Group performance status of 0 to 2, no evidence of distant metastases on CT scan of the abdomen and pelvis or on chest imaging, and adequate renal, hepatic, and hematologic function. Ninety-one percent (109 of 120) had ≥ pT3 disease. Interventions:Chemotherapy plus RT included 2 cycles of gemcitabine (1000 mg/m2 intravenously on days 1, 8, and 15) and cisplatin (70 mg/m2 intravenously on day 2) before and after RT to 4500 cGy in 150 cGy twice-daily fractions over 3 weeks using 3-dimensional conformal techniques. Chemotherapy alone included 4 cycles of gemcitabine and cisplatin. Main Outcome and Measure:Locoregional recurrence-free survival. Results:The chemotherapy plus RT arm accrued 75 patients, and the chemotherapy-alone arm accrued 45 patients, with a weighted randomization to speed accrual. Fifty-three percent (64 of 120) had urothelial carcinoma, and 46.7% (56 of 120) had squamous cell carcinoma or other. The arms were balanced except for age (median, 52 vs 55 years; P = .04) and tumor size (mean, 4.9 vs 5.8 cm; P < .01), both favoring chemotherapy plus RT. Two-year outcomes and overall adjusted hazard ratios (HRs) for chemotherapy plus RT vs chemotherapy alone were 96% vs 69% (HR, 0.08; 95% CI, 0.02-0.39; P < .01) for LRFS, 68% vs 56% (HR, 0.53; 95% CI, 0.27-1.06; P = .07) for disease-free survival, and 71% vs 60% (HR, 0.61; 95% CI, 0.33-1.11; P = .11) for overall survival (OS). Five patients (7%) had RT-associated late grade 3 gastrointestinal tract adverse effects in the chemotherapy plus RT arm. Conclusions and Relevance:Adjuvant chemotherapy plus RT was reasonably well tolerated and was associated with significant improvements in LRFS and marginal improvements in disease-free survival vs chemotherapy alone in LABC. The addition of adjuvant RT should be considered for LABC. This regimen warrants further study in phase 3 trials. Trial Registration:clinicaltrials.gov Identifier: NCT01734798.
| S-EPMC5833621 | biostudies-literature