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  string(103) "Association of Quality of Life Measures with Outcome in Metastatic Castration-resistant Prostate Cancer"
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  string(691) "There is growing interest in the impact that treatments have on the quality of life (QoL) of advanced prostate cancer patients. QoL, measured through the FACT-P or BPI-SF questionnaires, has been consistently improved in recently reported trials. In enzalutamide-treated patients, a prognostic value of baseline FACT-P scores has been shown, highlighting its clinical significance. We aim to evaluate the association of baseline QoL with survival in abiraterone-treated patients, and to evaluate if the efficacy of abiraterone over placebo is equivalent in patients with different baseline QoL scores. We envision this may help the design of trials with specific QoL endpoints in the future."
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      string(233) "NCT00638690 - A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of Abiraterone Acetate (CB7630) Plus Prednisone in Patients With Metastatic Castration-Resistant Prostate Cancer Who Have Failed Docetaxel-Based Chemotherapy"
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      string(223) "NCT00887198 - A Phase 3, Randomized, Double-blind, Placebo-Controlled Study of Abiraterone Acetate (CB7630) Plus Prednisone in Asymptomatic or Mildly Symptomatic Patients With Metastatic Castration-Resistant Prostate Cancer"
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  ["property_scientific_abstract"]=>
  string(1599) "Background: improvement and preservation of quality of life (HRQoL) is an important goal in advanced prostate cancer treatment. FACT-P and BPI-SF are the most frequent patient reported outcomes (PROs) used in clinical trials. In both COU-AA-301 and COU-AA-302 trials, abiraterone improved QoL and delayed the time to QoL deterioration. However, the prognostic and predictive value of QoL PROs has not been studied in patients treated with novel hormonal agents.

Objective: to evaluate the prognostic and predictive impact of HRQoL PROs in advanced prostate cancer patients treated with abiraterone or placebo.

Study Design: retrospective cohort study.

Participants: mCRPC patients treated in the COU-AA-301 and COU-AA-302 trials, with PRO (FACT-P and/or BPI-SF) data.

Main Outcome Measures: Overall survival (OS), progression-free survival (PFS).

Statistical Analysis: The association of baseline PRO scores (FACT-P, BPI-SF) with other baseline known prognostic factors will be evaluated through linear o logistic regression models. We will evaluate the association of baseline PROs, as well as changes in PRO scores after treatment initiation with OS/PFS will be evaluated with uni- and multivariable (MV) Cox Proportional Hazards (PH) models. The prognostic value of each of the FACT-P subscales will be determined by calculating the c-indices. The predictive value will be evaluated through an interaction test between treatment arm and baseline HRQoL (high vs low). Known prognostic clinical factors will be included as covariates in each of the Cox-PH models."
  ["project_brief_bg"]=>
  string(3231) "Metastatic castration-resistant prostate cancer is a deadly disease. Despite recent advances in the systemic treatment of the disease, prolongation of survival and palliation of symptoms are still the main goals of therapy. There has been an increased interest in the impact of novel agents on the quality of life (HRQoL) of prostate cancer patients, with specific reports of the impact on HRQoL for most of the recently reported phase III clinical trials.1?5

HRQoL is measured through patient reported outcomes (PROs). The most frequently used PROs in prostate cancer are the Functional Assessment of Cancer Therapy-Prostate (FACT-P) questionnaire and the Brief Pain Inventory Short Form (BPI-SF). Additionally, fatigue has also been specifically assessed in the COU-AA-301 trial through the Brief Fatigue Inventory (BFI).

Abiraterone acetate has shown a significant benefit in overall survival in two large randomized trials in mCRPC, both of which included HRQoL outcomes as secondary objectives. COU-AA-301 patients had overall worse baseline quality of life (median BPI-SF of 3, mean baseline FACT-P 108) compared to COU-AA-302 participants (mean FACTP of 122, 65-69% of patients with BPI-SF score 0-1).6 Despite these differences, a consistent improvement of quality of life of abiraterone over placebo has been reported in all analysed endpoints of both trials. In COU-AA-301, abiraterone conferred an improved rate of pain palliation (44 vs. 27%; P = 0.002),7 faster time to palliation (5.6 vs. 13.7 mos; p = 0.0018) and more durable pain palliation (4.2 vs. 2.1 mos; p = 0.0056) as well as improved fatigue8  and FACT-P score improvement compared to placebo.9 In the COU-AA-302, abiraterone significantly improved the median time to a decline in the FACT-P score,10 as well as a median time to total HRQoL deterioration score.6

Data on the clinical significance of HRQoL measures in patients treated with abiraterone is scarce. On the other hand, in patients treated with docetaxel in the TAX-327 trial, an association of baseline pain with a significantly worse overall survival has been reported. A decrease in pain with treatment, but not an increase in QoL, was independently associated with survival.11 Similarly, data reported with enzalutamide on the AFFIRM and PREVAIL trials showed a significant association between baseline FACT-P scores and an increased survival, as well as significantly improved survival in patients that experienced a 10-point increase in FACT-P scores after starting on treatment.12

We aim to:

(a)	Validate the association between QoL and survival previously reported in docetaxel and enzalutamide-treated patients

(b)	Evaluate whether the benefit of abiraterone over placebo is different in patients with baseline good vs worsened quality of life.

(c)	To compare the prognostic value of each of the specific QoL scales.

We anticipate our results will contribute to the growing body of evidence that emphasizes the prognostic value of baseline QoL measures, which may lead potentially to stratification by baseline QoL in clinical trials in the future and to the design of  specific clinical trials addressing validated QoL endpoints."
  ["project_specific_aims"]=>
  string(1397) "Overall Aims:

To determine :

-	Association between baseline HRQoL and outcome in metastatic castration-resistant prostate cancer treated with abiraterone.

-	Value of changes in HRQoL in metastatic castration-resistant prostate cancer after treatment with abiraterone and their association with outcome. 

Specific Endpoints:

Primary Endpoint:

-	Association of baseline FACT-P and BPI-SF scores and overall survival.

-	Association of a decline in FACT-P and BPI-SF scores and overall survival.

Secondary Endpoints:

-	Association of baseline FACT-P and BPI-SF scores with:

    o	Radiographic, PSA, clinical progression-free survival (rPFS, PSA-PFS, cPFS).

    o	Other baseline prognostic clinical variables.

    o	Treatment-related adverse events, skeletal-related events.

-	Association of %changes in FACT-P and BPI-SF scores with PSA  or RECIST response.

Exploratory Endpoints:

-	To evaluate the efficacy of abiraterone over placebo in patients with high vs low baseline FACT-P or BPI-SF scores.

-	Correlation between time to FACT-P and BPI-SF deterioration and PSA-PFS, rPFS and OS.

-	Patterns of progression (PSA, Rx, clinical) in patients with high vs low baseline FACT-P or BPI-SF scores.

-	To evaluate alternative cut-off points for QoL and pain response/progression."
  ["project_study_design"]=>
  string(0) ""
  ["project_study_design_exp"]=>
  string(0) ""
  ["project_purposes"]=>
  array(0) {
  }
  ["project_purposes_exp"]=>
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  ["project_software_used"]=>
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  ["project_software_used_exp"]=>
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  ["project_research_methods"]=>
  string(283) "Data Source: COU-AA-301 and COU-AA-302 datasets.

Inclusion Criteria:

Patients treated with abiraterone + prednisone or placebo + prednisone in the COU-AA-301 and COU-AA-302 trials.

Survival >= 12 weeks.

Baseline PRO (FACT-P, BPI-SF or BFI) data available."
  ["project_main_outcome_measure"]=>
  string(825) "Main Outcome Measure

-	Overall survival will be defined as the time from treatment initiation to death. 

Secondary Outcome Measures

-	Radiographic PFS: time from treatment initiation to radiographic progression or death.

-	PSA PFS: time from treatment initiation to PSA progression or death.

-	Clinical PFS: time from treatment initiation to clinical progression or death.

-	PSA response: 30% decline in PSA from baseline at 12 weeks from treatment initiation, and at any time-point.

-	Radiographic response: response as defined by RECIST criteria,13 only for patients with measurable disease at baseline.

Radiographic PFS, PSA-PFS and clinical PFS will be defined as per definitions on the COU-AA-301 and COU-AA-302 trials (Prostate Cancer Working Group 2 criteria).14"
  ["project_main_predictor_indep"]=>
  string(955) "The FACT-P questionnaire comprises a general function status scale and a prostate cancer-specific (PCS) subscale, ranging from 0 to 156 (higher scores indicating better QoL).15 The BPI-SF measures individual items on a scale of 0?10, with lower scores representing lower levels of pain intensity or less interference of pain with activities of daily living.16

FACT-P and BPI-SF scores will be assessed as continuous variables, and as categorical variables, with ?high? (good QoL) defined as values above the median, and ?low? (worse QoL) values represented as values below the median in each of the datasets. Alternative cut-off points will also be assessed (exploratory endpoints)

A post-treatment ?improvement? in FACT-P (QoL ?response?) scores will be defined as an increase in 10 points from baseline scores. An increase in BPI-SF will be defined as a ?pain? response. Alternative cut-off points will be assessed (exploratory endpoints)."
  ["project_other_variables_interest"]=>
  string(708) "Baseline variables:

- Treatment arm: categorical

- Ethnicity: categorical

- Age, height, weight: continuous

- Type of disease progression at baseline: categorical

- Time from LHRH treatment to trial treatment initiation

- Presence of bone, node, liver, other visceral metastases: yes/no - Gleason Score: ordinal

- Prior surgery or radiation therapy to primary: yes/no

Baseline and at post-baseline time-points:

- Hemoglobin, albumin, alkaline phosphatase, LDH, PSA: continuous. - ECOG PS: ordinal (0-4)

- Post-baseline radiographic evaluation (BS/CT scan): categorical

- Treatment related adverse events (graded according to CTCAE)"
  ["project_stat_analysis_plan"]=>
  string(1203) "- A descriptive analysis of endpoints and baseline covariates will be performed. Results will be presented as the median and interquartile range (IQR) for continuous variables and as number and percentage frequency for categorical variables.

- The Kaplan-Meier method will be used to estimate median survival times (OS, rPFS, cPFS) and 95% confidence intervals, in months.

- Linear regression models will be used to determine the association between baseline PRO scores (FACT-P, BPI-SF) when determined as a continuous variable with other baseline categorial prognostic factors.

- Logistic regression models will be used to determine the association between baseline PRO scores (FACT-P, BPI-SF) when defined as a categorical (?high? vs ?low?) with other baseline categorial prognostic factors. Odds ratio estimates and 95% confidence intervals will be calculated.

- Cox proportional-hazards (Cox-PH) models will be used to test the association of baseline PROs (FACT-P, BPI-SF) as well as post-treatment changes in PROs with overall survival and progression-free survival (radiographic, PSA and clinical progression-free survival). Other covariates that show a significant (p"
  ["project_timeline"]=>
  string(245) "- Project submission: November 2018

- Contract: December 2018

- Analysis: January - March 2019

- Abstract Submission (ASCO 2019): February 2019 - Paper Draft circulation: June-July 2019

- Paper Submission: August 2019"
  ["project_dissemination_plan"]=>
  string(167) "- Abstract presentation in ASCO 2019

- Submission of manuscript first-quartile oncology journals: Annals of Oncology, European Urology, Clinical Cancer Research"
  ["project_bibliography"]=>
  string(4442) "
1. Patrick-Miller LJ, Chen YH, Carducci MA, et al. Quality of life (QOL) analysis from E3805, chemohormonal androgen ablation randomized trial (CHAARTED) in prostate cancer (PrCa). J Clin Oncol. 2016;34(2):3-4.

2. Cella D, Ivanescu C, Holmstrom S, Bui CN, Spalding J, Fizazi K. Impact of enzalutamide on quality of life in men with metastatic castration-resistant prostate cancer after chemotherapy: additional analyses from the AFFIRM randomized clinical trial. Ann Oncol. 2014;(October 2014):179-185. doi:10.1093/annonc/mdu510.

3. de Bono JSS, Hardy-Bessard A-C, Kim CSS, et al. PROSELICA: Health-related quality of life (HRQL) and post-hoc analyses for the phase 3 study assessing cabazitaxel 20 (C20) vs 25 (C25) mg/m2 post-docetaxel (D) in patients (pts) with metastatic castration-resistant prostate cancer (mCRPC). Ann Oncol. 2016;27(suppl_6):722PD. doi:10.1093/annonc/mdw372.06.

4. Loriot Y, Miller K, Sternberg CN, et al. Effect of enzalutamide on health-related quality of life, pain, and skeletal-related events in asymptomatic and minimally symptomatic, chemotherapy-naive patients with metastatic castration-resistant prostate cancer (PREVAIL): Results from a randomised, p. Lancet Oncol. 2015;16(5):509-521. doi:10.1016/S1470-2045(15)70113-0.

5. Harland S, Staffurth J, Molina A, et al. Effect of abiraterone acetate treatment on the quality of life of patients with metastatic castration-resistant prostate cancer after failure of docetaxel chemotherapy. Eur J Cancer. 2013;49(17):3648-3657. doi:10.1016/j.ejca.2013.07.144.

6. Basch E, Autio K, Ryan CJ, et al. Abiraterone acetate plus prednisone versus prednisone alone in chemotherapy-naive men with metastatic castration-resistant prostate cancer: patient-reported outcome results of a randomised phase 3 trial. Lancet Oncol. 2013;14(12):1193-1199. doi:10.1016/S1470-2045(13)70424-8.

7. de Bono JS, Logothetis CJ, Molina A, et al. Abiraterone and increased survival in metastatic prostate cancer. N Engl J Med. 2011;364(21):1995-2005. doi:10.1056/NEJMoa1014618.

8. Sternberg CN, Molina A, North S, et al. Effect of abiraterone acetate on fatigue in patients with metastatic castration-resistant prostate cancer after docetaxel chemotherapy. Ann Oncol. 2013;24(4):1017-1025. doi:10.1093/annonc/mds585.

9. Logothetis CJ, Basch E, Molina A, et al. Effect of abiraterone acetate and prednisone compared with placebo and prednisone on pain control and skeletal-related events in patients with metastatic castration-resistant prostate cancer: exploratory analysis of data from the COU-AA-301 randomised tri. Lancet Oncol. 2012;13(12):1210-1217. doi:10.1016/S1470-2045(12)70473-4.

10. Ryan CJ, Smith MR, de Bono JS, et al. Abiraterone in metastatic prostate cancer without previous chemotherapy. N Engl J Med. 2013;368(2):138-148. doi:10.1056/NEJMoa1209096.

11. Berthold DR, Pond GR, Roessner M, et al. Treatment of hormone-refractory prostate cancer with docetaxel or mitoxantrone: relationships between prostate-specific antigen, pain, and quality of life response and survival in the TAX-327 study. Clin cancer Res. 2008;14(9):2763-2767. doi:10.1158/1078-0432.CCR-07-0944.

12. Beer TM, Miller K, Tombal B, et al. The association between health-related quality-of-life scores and clinical outcomes in metastatic castration-resistant prostate cancer patients: Exploratory analyses of AFFIRM and PREVAIL studies. Eur J Cancer. 2017;87:21-29. doi:10.1016/j.ejca.2017.09.035.

13. Eisenhauer E a, Therasse P, Bogaerts J, et al. New response evaluation criteria in solid tumours: revised RECIST guideline (version 1.1). Eur J Cancer. 2009;45(2):228-247. doi:10.1016/j.ejca.2008.10.026.

14. Scher HI, Halabi S, Tannock I, et al. Design and end points of clinical trials for patients with progressive prostate cancer and castrate levels of testosterone: recommendations of the Prostate Cancer Clinical Trials Working Group. J Clin Oncol. 2008;26(7):1148-1159. doi:10.1200/JCO.2007.12.4487.

15. Jeong HH, Seong SJ, Hyun ML, Choi YH, Kim S, Han YC. The functional assessment of cancer therapy-prostate (FACT-P) scales in men with prostate cancer: Reliability and validity of the Korean version. J Korean Med Sci. 2006;21(2):295-299. doi:10.3346/jkms.2006.21.2.295.

16. Cleeland CS, Ryan KM. Pain assessment: global use of the Brief Pain Inventory. Ann Acad Med Singapore. 1994;23(2):129-138.
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products
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