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PURPOSE To evaluate the safety and efficacy of gemcitabine and cisplatin in combination with the immune checkpoint inhibitor pembrolizumab as neoadjuvant therapy before radical cystectomy (RC) in muscle-invasive bladder cancer. METHODS Patients with clinical T2-4aN0/XM0 muscle-invasive bladder cancer eligible for RC were enrolled. The initial six patients received lead-in pembrolizumab 200 mg once 2 weeks prior to pembrolizumab 200 mg once on day 1, cisplatin 70 mg/m2 once on day 1, and gemcitabine 1,000 mg/m2 once on days 1 and 8 every 21 days for four cycles. This schedule was discontinued for toxicity and subsequent patients received cisplatin 35 mg/m2 once on days 1 and 8 without lead-in pembrolizumab. The primary end point was pathologic downstaging (< pT2N0) with null and alternative hypothesis rates of 35% and 55%, respectively. Secondary end points were toxicity including patient-reported outcomes, complete pathologic response (pT0N0), event-free survival, and overall survival. Association of pathologic downstaging with programmed cell death ligand 1 staining was explored. RESULTS Thirty-nine patients were enrolled between June 2016 and March 2020 (72% cT2, 23% cT3, and 5% cT4a). Patients received a median of four cycles of therapy. All patients underwent RC except one who declined. Twenty-two of 39 patients (56% [95% CI, 40 to 72]) achieved < pT2N0 and 14 of 39 (36% [95% CI, 21 to 53]) achieved pT0N0. Most common adverse events (AEs) of any grade were thrombocytopenia (74%), anemia (69%), neutropenia (67%), and hypomagnesemia (67%). One patient had new-onset type 1 diabetes mellitus with ketoacidosis related to pembrolizumab and no patients required steroids for immune-related AEs. Clinicians consistently under-reported AEs when compared with patients. CONCLUSION Neoadjuvant gemcitabine and cisplatin plus pembrolizumab met its primary end point for improved pathologic downstaging and was generally safe. A global study of perioperative chemotherapy plus pembrolizumab or placebo is ongoing.

Introduction Radium-223, abiraterone, and enzalutamide have each been shown to significantly improve survival as monotherapy in patients with metastatic castration-resistant prostate cancer. However, effects of combination radium-223 plus abiraterone or enzalutamide on survival and safety remain unclear. Patients and methods This single-center retrospective cohort study used electronic health record data of patients with metastatic castration-resistant prostate cancer and bone metastases who were treated with radium-223 between April 1, 2014 and February 19, 2019. Patients who received radium-223 monotherapy were compared to patients who received a combination of radium-223 plus either abiraterone or enzalutamide. The primary endpoint was overall survival. Secondary endpoints included progression-free survival, time to symptomatic skeletal event, symptomatic skeletal event-free survival, and incidence of drug-related adverse events. Time-to-event analyses were estimated by log rank tests using Kaplan-Meier curves. Hazard ratios and 95% confidence intervals were derived from Cox proportional hazards models. Chi-square tests evaluated difference in serious adverse events between the two arms. Results A total of 60 patients met inclusion criteria (n = 41 in the monotherapy arm, n = 19 in the combination arm). Differences in median overall survival were not observed (12.7 vs. 12.8 months; HR 1.15, 95% CI 0.59–2.23; P = 0.68), but median progression-free survival was significantly longer in the combination arm (7.6 vs. 4.9 months; HR 1.94, 95% CI 1.11–3.40; P = 0.02). Significant differences were not observed in time to first SSE (P = 0.97), SSE-free survival (P = 0.16), or in the overall incidence of serious adverse events (P = 0.45). Conclusion Combination radium-223 plus abiraterone or enzalutamide did not improve overall survival, but prolonged progression-free survival without increasing the incidence of serious adverse events in metastatic castration-resistant prostate cancer patients with bone metastases. However, these results are limited by small numbers and patient selection inherent in retrospective analysis.

Objectives We propose a bladder cancer patient-centered, interdisciplinary collaboration model of care adapted from an earlier model by Black, Dornan, and Allegrante (1986). The Bladder Patient-Centered Interdisciplinary Team (BPIT) model provides a conceptual foundation for assembling interdisciplinary teams and emphasizes the patient as an active participant in treatment and member of the care team, along with oncology nurses, wound ostomy and continence nurses, and oncology social workers. Data Sources This model integrates scopes of practice and practice standards from nursing and social work professional organizations, findings from peer-reviewed articles, and expert clinical opinion in conceptualizing interdisciplinary bladder cancer care. Conclusion BPIT is not meant to be an exhaustive or proscriptive catalog of roles and responsibilities. Future research is needed in this area to further refine and delineate the oncology social worker and nursing scopes of practice and standards for collaborative teamwork. Implications for Nursing Practice The unmet supportive care needs of patients with bladder cancer across all phases of the cancer continuum are well documented. Oncology and wound ostomy and continence nurses are of critical importance to holistically addressing these needs and enhancing the health-related quality of life. The BPIT model provides a broad overview of the discipline-specific and interdisciplinary team-specific roles and responsibilities for bladder cancer care.

Background The majority of urothelial cancers (UC) harbor alterations in retinoblastoma (Rb) pathway genes that can lead to loss of Rb tumour suppressor function. Palbociclib is an oral, selective inhibitor of CDK 4/6 that restores Rb function and promotes cell cycle arrest. Methods In this phase II trial, patients with metastatic platinum-refractory UC molecularly selected for p16 loss and intact Rb by tumour immunohistochemistry received palbociclib 125 mg p.o. daily for 21 days of a 28-day cycle. Primary endpoint was progression-free survival at 4 months (PFS4) using a Simon’s two-stage design. Next-generation sequencing including Rb pathway alterations was conducted. Results Twelve patients were enrolled and two patients (17%) achieved PFS4 with insufficient activity to advance to stage 2. No responses were seen. Median PFS was 1.9 months (95% CI 1.8–3.7 months) and median overall survival was 6.3 months (95% CI 2.2–12.6 months). Fifty-eight percent of patients had grade ≥3 hematologic toxicity. There were no CDKN2A alterations found and no correlation of Rb pathway alterations with clinical outcome. Conclusions Palbociclib did not demonstrate meaningful activity in selected patients with platinum-refractory metastatic UC. Further development of palbociclib should only be considered with improved integral biomarker selection or in rational combination with other therapies.

Objective To review the current state of prostate cancer screening and future directions. Data Sources Nursing, medical and scientific literature related to prostate cancer screening, and national and international professional recommendations. Conclusion Prostate cancer screening has been a topic of robust discussion for a number of years. Research continues to examine novel options for prostate cancer screening to either replace or compliment the prostate specific antigen test, but require additional validation before they will be widely accepted into clinical practice. Implications for Nursing Practice As new data emerges and professional organizations update their recommendations, it is important for oncology nurses to keep abreast of the latest developments to educate patients.

Men with clinically localized prostate cancer face an archetypal "preference sensitive" treatment decision. A shared decision making process incorporating patient values and preferences is paramount. We evaluated the benefit of a novel decision making application, and investigated associations between patient preferences and treatment choice.We used a novel, web based application that provides education, preference measurement and personalized decision analysis for patients with newly diagnosed prostate cancer. Preferences are measured using conjoint analysis. The application ranks treatment options according to their "fit" (expected value) based on clinical factors and personal preferences, and serves as the basis for shared decision making during the consultation. We administered the decisional conflict scale before and after completion of the application. Additionally, we compared post-visit perceptions of shared decision making between a baseline "usual care" cohort and a cohort seen after the application was integrated into clinical practice.A total of 109 men completed the application before their consultation, and had decisional conflict measured before and after use. Overall decisional conflict decreased by 37% (p0.0001). Analysis of the decisional conflict subscales revealed statistically significant improvements in all 5 domains. Patients completing the decision making application (33) felt more included in (88% vs 57%, p=0.01) and jointly responsible for (94% vs 52%, p0.0001) the decision about further treatment compared to those receiving usual care (24). More patients who completed the application strongly agreed that different treatment options were discussed (94% vs 74%, p=0.02).Implementation of this web based intervention was associated with decreased decisional conflict and enhanced elements of shared decision making.

305 Background: The Strata trial (NCT03061305) is a multi-institutional precision oncology collaboration structured as an observational protocol that aims to match patients to genomically-guided therapies. Methods: Selected University of North Carolina (UNC) metastatic prostate cancer (mPC) patients were enrolled on this IRB-approved study. Formalin fixed paraffin-embedded primary tumor specimens, without matched germline controls, were sent for targeted next generation sequencing (NGS) to detect actionable variants, including: mutations in 87 genes, copy number variations in 31 genes, and gene fusions in 46 gene drivers. mPC-related genes of particular interest included: AR, ATM, BRCA1/2, ERG, MSH2, MSH6, PTEN, RB1, and TP53. Results: Of the 92 cases sequenced, 5 [5%] failed testing. Of the 87 mPC patients (median age 69 years [47-86]) enrolled: 53 [61%] were white, 28 [32%] were black, 1 [1%] was Asian, and 5 [6%] declined to be identified. NGS data revealed 106 variants in 27 genes: 62 patients (71%) had at least one variant, 21 (24%) had 2 variants, 7 (8%) had 3 variants, and 4 (3%) had 4 variants. Among the 62 patients with at least 1 identified variant, TMPRSS2-ERG fusion occurred most frequently (50%), followed by TP53 (40%), and PTEN (16%). 6% of all sequenced patients had variants in DNA damage repair genes including ATM (3%), BRCA2 (2%) and MSH2 (1%). One patient had a SLC45A3-ERG fusion combined with PTEN deep deletion, which has been associated with a more aggressive phenotype. One patient with a microsatellite-instability high tumor was treated with pembrolizumab. Conclusions: The UNC experience shows that a high proportion of primary prostate cancer tumors from mPC patients have genomic variants, and one patient was treated based on these data. Limited actionability may reflect the landscape of currently FDA approved mPC treatments, and available clinical trials. It may also be due to a short follow-up, and these data could inform treatment planning upon progression.

Objectives To review prostate anatomy, epidemiology and risk factors, presentation and diagnosis, staging and treatment, emerging therapies, and patient education. Data Sources Review of current and classic literature. Conclusion Patients must be educated regarding screening recommendations and offered evidence-based guidance regarding the risks, benefits, and alternatives to treatment. Adverse effects of treatment may impact quality of life. Implications for Nursing Practice As the incidence of prostate cancer continues to rise, nurses will play an essential role in the treatment and counseling of men facing this malignancy. Nursing research will also be necessary to further investigate quality-of-life concerns and evidence-based practice regarding symptom management.

Neoadjuvant chemotherapy (NAC) before radical cystectomy is the standard of care for muscle-invasive bladder cancer (MIBC). Many patients are referred to an academic medical center (AMC) for cystectomy but receive NAC in the community setting. This study examines if administration of NAC in the community is associated with differences in type of NAC received, pathologic response rate (pT0), and time to cystectomy as compared to NAC administered at an AMC.We performed a retrospective study of patients with MIBC (cT2a-T4-Nx-M0) referred to a single AMC between 1/2012 and 1/2014 who received NAC. We analyzed chemotherapy received, time to cystectomy, pT0, and survival in patients who received NAC in our AMC compared to those treated in the community.In all, 47 patients were analyzed. A similar total dose of cisplatin (median: 280 mg/m(2) for both groups, P = 0.82) and pT0 rate (25% vs. 29%, P = 0.72) were seen in patients treated in our AMC and the community. However, administration of NAC in the community was associated with a prolonged time to cystectomy compared with that in our AMC (median number of days 162 vs. 128, P0.01). This remained significant after adjusting for stage, comorbidity status, and distance to the AMC (P = 0.02). Disease-free survival and overall survival did not differ.Patients with MIBC treated with NAC in the community as compared to an AMC received similar chemotherapy and achieved comparable pT0 rates, indicating effective implementation of NAC in the community. However, NAC in the community was associated with longer time to cystectomy, suggesting a delay in the transition of care between settings.

359 Background: Neoadjuvant cisplatin-based chemotherapy prior to radical cystectomy is the standard of care for MIBC. Many patients are referred to an academic medical center (AMC) for cystectomy but receive NAC in the community setting. It is unknown if administration of NAC in the community is associated with differences in type of NAC received, pathologic response rate (pT0), and time to cystectomy as compared to NAC administered at an AMC. Methods: This is a retrospective study of 135 patients referred to a single AMC with MIBC (cT2a-T4-Nx-M0) between 1/2012 and 1/2014. We analyzed patient demographics, clinical stage, treatment, pT0 and time to cystectomy in patients who received NAC at our AMC compared to those referred to the community setting. Comparisons were made using Wilcoxon rank-sum, Fisher’s exact test, and multivariable linear regression. Results: Median age was 70, 73% were male, and 83% Caucasian. Most patients (73.3%) had clinical stage II disease. 94 (69.6%) underwent cystectomy and of those, 47 (50%) received NAC. 34% received NAC at our AMC and 66% in the community. Age, sex, clinical stage, and renal function did not differ significantly between those who received NAC in the community and those at our AMC. Those who received NAC in the community had a similar total dose of cisplatin (median 280 mg/m2 for both groups, p=0.89) and pT0 rate (25% vs. 30%, p=0.72) compared to those who received NAC at our AMC. However, community administration of NAC was associated with a significantly prolonged time from initial visit to cystectomy (median number of days 128 vs. 162, p