Metastatic Prostate Cancer Men's Attitudes Towards Treatment of the Local Tumour and Metastasis Evaluative Research

Patients' Preferences in the Treatment of Hormone-sensitive Metastatic Prostate Cancer: a Discrete Choice Experiment

Systemic therapy (i.e Androgen Deprivation Therapy with Docetaxel, Enzalutamide, Apalutamide or Abiraterone Acetate) has increased overall survival in men with hormone-sensitive metastatic prostate cancer.

Novel local cytoreductive treatments and metastasis directed therapy are being evaluated, these can confer additional harm, but might improve survival.

We aim to elicit men's preferences for and willingness to accept trade-offs between potential improved survival and cytoreductive treatment risks using a 'discrete choice experiment'.

OBJECTIVES: To determine the attributes associated with treatment that are most important to men with hormone-sensitive metastatic prostate cancer (mPCa). To determine men's preferences for, and trade-offs between, the attributes (survival and side-effects) of different treatment options in metastatic prostate cancer including systemic therapy, local and metastases-directed physical therapies.

PHASE: Prospective multi-centre observational cohort

DESIGN: Discrete choice experiment, single-visit, electronic questionnaire design

SAMPLE SIZE: Multi-centre Stage (Stage 3) n = 300 patients

POPULATION: Men with newly-diagnosed metastatic prostate cancer who have not consented to a form of local cytoreductive or metastasis directed therapy.

Inclusion Criteria:

1. Diagnosed with prostate cancer within 4 months of screening visit
2. Performance status 0-2

Exclusion Criteria:

1. Castrate-resistant metastatic prostate cancer
2. Patient has consented to a form of local cytoreductive treatment to prostate
3. Patient has consented to a form of metastasis directed therapy