Harnessing the patient voice in prostate cancer research: Systematic review on the use of patient-reported outcomes in randomized controlled trials to support clinical decision-making

Health-Related Quality of Life Assessment in Prostate Cancer Patient Undergoing Androgen Deprivation Therapy: Real-World Experience in the READT Study

PURPOSE

To investigate the effect of androgen deprivation therapy (ADT) on health-related quality of life (HRQOL) in Asian men with all stages of prostate cancer.

MATERIALS AND METHODS

READT (real-life evaluation of the effect of ADT in prostate cancer patients in Asia) was a multi-center, prospective observational study involving six sites across four Asian populations. We enrolled eligible prostate cancer patients, who opted for ADT alone or in combination without prior neoadjuvant or adjuvant ADT within 12 months. The EuroQoL-5 dimensions, 5 level scale (EQ-5D-5L) utility index scores and visual analog scale (VAS) were evaluated at baseline, month 6 and month 12.

RESULTS

A total of 504 patients were recruited into READT between September 2016 and May 2020 with 52.9% diagnosed with metastatic prostate cancer. The EQ-5D-5L was evaluable in 442/504 (87.7%) of patients. Overall baseline EQ-5D-5L utility index score was 0.924 (interquartile range [IQR] 0.876-1.000). We observed a statistically significant difference in baseline EQ-5D-5L utility index score among different populations with a median EQ-5D-5L utility index score of 1 for Taiwan & Hong Kong, 0.897 for China and 0.838 for Malaysia. Similar trend was observed throughout multiple treatment time-points. Stage IV prostate cancer were significantly associated with a lower baseline EQ-5D-5L utility index score compared to stage I-III prostate cancer, producing a median disutility value of -0.080. Participants had a high median VAS (80, IQR 70-90), indicating good overall health on average during ADT initiation.

CONCLUSIONS

The study highlights the differences in health state utility index scores among various Asian prostate cancer patients receiving ADT at real-world setting. Our findings will be informative and useful in cost-effectiveness evaluation and policy decision making.

Development and validation of the patient-reported outcome scale for chronic kidney disease

PURPOSE

The patient-reported outcomes (PROs) measuring patient's experience and perception of disease are important components of approach to care. However, no tools are available to assess the PROs of chronic kidney disease (CKD). This study aims to develop and verify a PROs scale to evaluate clinical outcomes in CKD patients.

METHODS

The theoretical structure model and original item pool were formed through a literature review, patient interviews and references to relevant scales. The Delphi method, classical test theory methods and item response theory method were used to select items and adjust dimensions to form the final scale. Altogether 360 CKD patients were recruited through convenience sampling. CKD-PROs could be evaluated from four aspects, namely reliability, content validity, construct validity, responsibility, and feasibility.

RESULTS

The CKD-PROs scale covers 4 domains, including the physiological, psychological, social, and therapeutic domain, and 12 dimensions, 54 items. The Cronbach's α is 0.939, the split reliability coefficient is 0.945, and the correlation of the scores each item and domain's coefficients range from 0.413 to 0.669. The results of structure validity, content validity and reactivity showed that the multidimensional measurement of the scale met professional expectations. The recovery rate and effective rate of the scale were over 99%.

CONCLUSION

The CKD-PROs scale has great reliability, validity, reactivity, acceptability and is capable of being used as one of the evaluation tools for the clinical outcomes of CKD patients.

US Population Reference Values for Health-Related Quality of Life Questionnaires Based on Demographics of Patients with Prostate Cancer

Introduction

The patient experience with prostate cancer differs throughout the disease continuum, with health-related quality of life (HRQoL) and symptoms worsening as the disease progresses. To understand the prostate cancer experience, it is important to understand the experience of same-aged men without prostate cancer as a basis for comparison. This study provides the US population reference values for six patient-reported outcome (PRO) questionnaires.

Methods

A cross-sectional online survey, including several PRO questionnaires, was administered in 2019 to a representative sample of US adults. The male sample (N = 876) was raked by age to have similar characteristics of men in key advanced prostate cancer trials (mean/median age: 67.5/70.0 years), with the majority being white and non-Hispanic.

Results

Results from six PRO questionnaires (Brief Pain Inventory; Quality of Life in Neurological Disorders 2.0 Cognitive Short Form; PRO Measurement Information System Fatigue-Short Form; Functional Assessment of Cancer Therapy-General; European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30; and European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Prostate Cancer Module) indicated that the US representative sample of men have good role, physical, and emotional functioning but slightly impaired social, functional, and overall well-being. In addition, they have normal cognitive function, few financial problems, minimal pain and fatigue, minimal urinary and bowel symptoms, and limited use of incontinence aids.

Conclusions

The availability of the reference values for these PRO questionnaires will enable researchers to compare the HRQoL of patients with advanced prostate cancer in the US with that of the general US population and allow for a better interpretation of those scores. Registration numbers of advanced prostate cancer trials: NCT02677896, NCT02003924, NCT01212991, NCT00974311.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12325-022-02204-3.

Assessment of Health-Related Quality of Life in Patients with Advanced Prostate Cancer-Current State and Future Perspectives

Simple Summary

In recent years, evidence regarding survival outcomes of novel therapies has increased significantly. However, less is known regarding the impact of novel therapy combinations on quality of life aspects of the treated patients. In the current comprehensive review, we discuss the importance of quality of life for patients with advanced prostate cancer, and present the most frequently used tools to evaluate quality of life in recent randomized trials. Further, we discuss the ease of use of these validated questionnaires for clinicians and try to focus on the suggested appropriate use as well as potential strategies for improvement of quality of life evaluation in these clinical scenarios of advanced prostate cancer.

Abstract

With the therapeutic landscape of advanced prostate cancer rapidly evolving and oncological benefits being shown for a plethora of new agents and indications, health-related quality of life (HRQOL)-associated evidence is still subpar. In the current comprehensive review, we discuss the importance of HRQOL for patients with advanced PC (metastatic hormone-sensitive prostate cancer (mHSPC), metastatic castration-resistant prostate cancer (mCRPC) and non-metastatic castration-resistant prostate cancer (nmCRPC)), and present the most frequently used tools to evaluate HRQOL in recent randomized trials. Furthermore, we discuss the ease of use of these validated questionnaires for clinicians and try to focus on the suggested appropriate use in clinical practice, as well as potential strategies for improvement of HRQOL evaluation in these clinical scenarios of advanced prostate cancer.

Measuring Duchenne muscular dystrophy impact: development of a proxy-reported measure derived from PROMIS item banks

BACKGROUND

Person-reported outcomes measurement development for rare diseases has lagged behind that of more common diseases. In studies of caregivers of patients with rare diseases, one relies on proxy report to characterize this disability. It is important to measure the child's disability accurately and comprehensively because it affects caregiver burden. We aimed to create a condition-specific caregiver proxy-report measure for Duchenne Muscular Dystrophy (DMD) in order to understand the impact of DMD on the caregiver. Drawing on relevant item banks from the Patient-Reported Outcome Measurement Information System (PROMIS), we sought to confirm their reliability and validity in the target sample of DMD caregivers.

METHODS

This web-based study recruited DMD caregivers via Rare Patient Voice, patient-advocacy groups, and word of mouth. Recruitment was stratified by age of the caregiver's child with DMD, which broadly represents stages of DMD progression: 2-7, 8-12, 13-17, and > 18. Telephone interviews with DMD parent-caregivers pretested possible measures for content validity. The web-based study utilized an algorithm to categorize respondents' ambulatory status for tailored administration of PROMIS Parent-Proxy items as well as some new items developed based on caregiver interviews. Item response theory analyses were implemented.

RESULTS

The study sample included 521 DMD caregivers representing equally the four age strata. The proxy-report measure included the following domains: fatigue impact, strength impact, cognitive function, upper extremity function, positive affect, negative affect, sleep-device symptoms, and mobility. The first five domains had strong psychometric characteristics (unidimensionality; acceptable model fit; strong standardized factor loadings; high marginal reliability). Negative Affect, covering anger, anxiety, depressive symptoms, and psychological stress, fit a bifactor model with good model fit, high marginal reliability, and strong factor loadings. The Sleep-device symptoms domain was not unidimensional, and the mobility domain did not have a simple structure due to residual correlations among items at opposite end of the mobility-disability continuum. These two domain scores were retained as clinimetric indices (i.e., uncalibrated scales), to achieve the overall goal of having a content-valid DMD-specific measure across all stages of disease severity.

CONCLUSIONS

The present study derived a DMD-specific proxy-report measure from PROMIS item banks and supplemental items that could potentially be utilized in caregiver research across all stages of the care recipient's DMD. Future research will focus on assessing the responsiveness and validity of the measure over time and its comparison to DMD patient self-report.

Measuring quality of life in older people with cancer

PURPOSE OF REVIEW

The number of individuals aged 65+ with cancer will double in the next decade. Attention to quality of life (QOL) is imperative to identify relevant endpoints/outcomes in research and provide care that matches individual needs. This review summarizes recent publications regarding QOL measurement in older adults with cancer, considering implications for research and practice.

RECENT FINDINGS

QOL is a complex concept and its measurement can be challenging. A variety of measurement tools exist, but only one specific to older adults with cancer. QOL is frequently measured as functional health, adverse symptoms, and global QOL, thus only capturing a portion of this concept. Yet successful QOL intervention for older adults requires drawing from behavioral and social dimensions.Growing interest in comprehensive geriatric assessment (CGA) and patient-reported outcomes (PROs) provides important opportunities for measuring QOL. Recommendations for use of CGAs and PROs in clinical practice have been made but widespread uptake has not occurred.

SUMMARY

QOL is important to older adults and must be central in planning and discussing their care. It is modifiable but presents measurement challenges in this population. Various domains are associated with decline, survival, satisfaction with life, coping, and different interventions. Measurement approaches must fit with intention and capacity to act within given contexts.

Oncologic and patient-reported outcomes after robot-assisted radical prostatectomy in men aged ≥75 years

OBJECTIVE

The present study aimed to evaluate oncologic outcomes, patient-reported outcomes (PROs), and frailty in older adult patients aged ≥75 years who underwent robot-assisted radical prostatectomy (RARP).

MATERIALS AND METHODS

This retrospective study reviewed the medical records of 752 patients who underwent RARP from July 2011 to May 2020. The PROs were evaluated by Expanded Prostate Cancer Index Composite questionnaire at baseline and 1 year after RARP. Patients were divided into 3 groups according to age at RARP: <70, 70-74, and ≥75 years. Oncologic outcomes and PROs were compared between the ≥75 and 70-74 years groups and between the ≥75 and <70 years groups.

RESULTS

Median follow up was 47 months. Of the 752 patients, 469, 216, and 74 were classified into the <70, 70-74, and ≥75 years groups, respectively. No significant differences were observed in the biochemical recurrence-free survival, cancer-specific survival, and overall survival among the groups. No significant differences were observed in the PROs and pad-free rates at baseline and 1 year after RARP among the groups. The full satisfaction (Expanded Prostate Cancer Index Composite score = 100) at 12 months after RARP was significantly higher in the ≥75 years group (27%) than in the <70 years group (15%, P = 0.045).

CONCLUSION

The oncologic outcomes and PROs in select patients with prostate cancer aged ≥75 years were feasible and acceptable with RARP.

Association between the baseline frailty and quality of life in patients with prostate cancer (FRAQ-PC study)

BACKGROUND

The association between baseline frailty and health-related quality of life (HRQOL) in patients with prostate cancer (PC) remains unknown.

METHODS

We retrospectively evaluated the association of pretreatment frailty with HRQOL in 409 patients with PC from February 2017 to April 2020. Frailty and HRQOL were evaluated using the geriatric 8 (G8) screening tool and QLQ-C30 questionnaire, respectively. The primary objective was comparison of G8 and QOL scores between the localized diseases (M0 group) and metastatic castration-sensitive PC (mCSPC group). Secondary objectives were to study the association of G8 and QOL scores in each group and effect of frailty (G8 ≤ 14) on worse QOL.

RESULTS

The median age of patients was 70 years. There were 369 (surgery: 196, radiotherapy: 156, androgen deprivation therapy alone: 17) patients in the M0 and 40 patients in the mCSPC groups. There was a significant difference between the M0 and mCSPC groups in the G8 score (14.5 vs. 12.5), functioning QOL (94 vs. 87), global QOL (75 vs. 58), and 100-symptom QOL (94 vs. 85) scores. G8 scores were significantly associated with functioning, global, and 100-symptom QOL scores in both M0 and mCSPC groups. The multivariable logistic regression analyses showed that frailty (G8 ≤ 14) was significantly associated with worse global QOL, functioning QOL, and 100-symptom QOL scores.

CONCLUSION

The baseline frailty and HRQOL were significantly different between the localized and metastatic disease. The baseline frailty was significantly associated with worse HRQOL in patients with PC.

Harnessing the patient voice in prostate cancer research: Systematic review on the use of patient-reported outcomes in randomized controlled trials to support clinical decision-making

Background

Given the growing importance of patient‐reported outcomes (PROs) as part of “big data” in improving patient care, there is a need to provide a state‐of‐the‐art picture of the added value of using PROs in prostate cancer (PCa) randomized controlled trials (RCTs). We aimed to synthetize the most recent high‐quality PRO evidence‐based knowledge from PCa RCTs and to examine whether quality of PRO reporting in PCa research improved over time.

Methods

We conducted a systematic literature search using PubMed, from April 2012 until February 2019. For benchmarking purposes, we also included RCTs identified in our previously published review of RCTs (2004‐2012). Methodology for study identification and evaluation followed standardized criteria and a predefined data extraction form was used to abstract information. PRO quality of the studies was evaluated using the International Society of Quality of Life Research (ISOQOL) recommended criteria.

Results

A total of 55 new RCTs were published between April 2012 and February 2019. About 24 (43.6%) RCTs were found to be of high‐quality regarding PRO assessments. Of these, 13 (54.2%) have been reported in the most recent European Association of Urology (EAU) PCa Guidelines. Overall QoL and sexual, urinary, and bowel function were the most commonly reported PROs. FACT‐P, EPIC‐26, and EORTC QLQ‐C30 and/or its module PR25 were most frequently used as measurement tools. An overall improvement in the completeness of PRO reporting was noted over time.

Conclusion

Many PRO trials are currently not included in the EAU guidelines. Our findings suggest that there has to be a better consensus on the use of PRO data for PCa patients, which will then be reflected in the PCa Guidelines and future data collection. Homogeneity in PROs collection and measurement tools will in turn enable “big data” Consortia to increase the patients’ voice in clinical research.