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Publication Detail
Conventional radical versus focal treatment for localised prostate cancer: a propensity score weighted comparison of 6-year tumour control.
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    van Son MJ, Peters M, Reddy D, Shah TT, Hosking-Jervis F, Robinson S, Lagendijk JJW, Mangar S, Dudderidge T, McCracken S, Hindley RG, Emara A, Nigam R, Persad R, Virdi J, Lewi H, Moore C, Orczyk C, Emberton M, Arya M, Ahmed HU, van der Voort van Zyp JRN, Winkler M, Falconer A
  • Publisher:
    Nature Publishing Group
  • Publication date:
  • Journal:
    Prostate Cancer and Prostatic Diseases
  • Status:
    Published online
  • Country:
  • Print ISSN:
  • PII:
  • Language:
BACKGROUND: For localised prostate cancer, focal therapy offers an organ-sparing alternative to radical treatments (radiotherapy or prostatectomy). Currently, there is no randomised comparative effectiveness data evaluating cancer control of both strategies. METHODS: Following the eligibility criteria PSA < 20 ng/mL, Gleason score ≤ 7 and T-stage ≤ T2c, we included 830 radical (440 radiotherapy, 390 prostatectomy) and 530 focal therapy (cryotherapy, high-intensity focused ultrasound or high-dose-rate brachytherapy) patients treated between 2005 and 2018 from multicentre registries in the Netherlands and the UK. A propensity score weighted (PSW) analysis was performed to compare failure-free survival (FFS), with failure defined as salvage treatment, metastatic disease, systemic treatment (androgen deprivation therapy or chemotherapy), or progression to watchful waiting. The secondary outcome was overall survival (OS). Median (IQR) follow-up in each cohort was 55 (28-83) and 62 (42-83) months, respectively. RESULTS: At baseline, radical patients had higher PSA (10.3 versus 7.9) and higher-grade disease (31% ISUP 3 versus 11%) compared to focal patients. After PSW, all covariates were balanced (SMD < 0.1). 6-year weighted FFS was higher after radical therapy (80.3%, 95% CI 73.9-87.3) than after focal therapy (72.8%, 95% CI 66.8-79.8) although not statistically significant (p = 0.1). 6-year weighted OS was significantly lower after radical therapy (93.4%, 95% CI 90.1-95.2 versus 97.5%, 95% CI 94-99.9; p = 0.02). When compared in a three-way analysis, focal and LRP patients had a higher risk of treatment failure than EBRT patients (p < 0.001), but EBRT patients had a higher risk of mortality than focal patients (p = 0.008). CONCLUSIONS: Within the limitations of a cohort-based analysis in which residual confounders are likely to exist, we found no clinically relevant difference in cancer control conferred by focal therapy compared to radical therapy at 6 years.
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