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Table 1 Trial flowchart

From: SPARKLE: a new spark in treating oligorecurrent prostate cancer: adding systemic treatment to stereotactic body radiotherapy or metastasectomy: key to long-lasting event-free survival?

Preliminary investigations

Radiotherapy:

 

‐ CT-simulation

‐ MRI for radiotherapy planning

Completing the questionnaire

Surgery:

‐ Pre-operative consultation anesthesia

Completing the questionnaire

Start hormone therapy (14 days before the metastasis-directed therapy)

Group A

/

Group B

start hormone therapy for 1 month

Group C

start first-line hormone therapy + second-line hormone therapy for 6 months

Metastasis-directed therapy

- Surgery

- Radiotherapy: 3–7 irradiation treatments, max 3x/week

End of Radiotherapy

- Standard follow-up + blood sample + completing the questionnaire

Month 1

- Standard follow-up + blood sample + completing the questionnaire

Month 3

Month 6

Month 9 and every 3 months thereafter

- Standard follow-up + blood sample + completing the questionnaire at month 12 and 24

  1. Summary of study visits and procedures