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Table 1 Oncologic outcomes of grade group 2 Prostate Cancer (PCa) patients enrolled in active surveillance (AS) protocols

From: Active surveillance should not be routinely considered in ISUP grade group 2 prostate cancer

Cohort

Type

Years

Total nr.

IR (GG2)

Median follow-up, yrs (IQR)

TFS

MFS

CSS

Toronto Sunnybrook

(Musunuru et al., 2016, Yamamoto et al., 2016)

Prospective

1995–2013

945

213 (102)

7 (4–10)

15y, IR vs. LR: 47.8% vs. 58.2%

15y, IR vs. LR: 82.2% vs. 94.6%

15y, IR vs. LR: 88.5% vs. 96.7%

Royal Marsden

(Selvadurai et al., 2013)

Prospective

2002–2011

471

88 (33)

6 (NR)

5y: 70% (entire cohort)

Metastases reported in two patients, one of which had Gleason 3 + 4 at diagnosis

5y: 96% (entire cohort)

UCSF (Maggi et al., 2020)

Prospective

1990–2018

1450

216 (147)

6 (4–10)

7y, GG2: 46%

7y, GG2: 96%

7y: >99% (entire cohort)

Multicenter Canary PASS

(Weismann Malaret et al., 2022)

Prospective

2008–2020

1728

NR (154)

6 (3–9)

5y, GG2 vs. GG1: 42% vs. 66%

Six pts with GG1 developed metastases, none with GG2.

NR

MSKCC (Carlsson et al., 2020)

Retrospective

2000–2017

219

219 (219)

3 (2–5)

5y: 61%

5y: 100%

5y: 100%

UCLH (Stavrinides et al., 2020)

Retrospective

2004–2017

672

NR (148)

5 (3–7)

5y: MRI visible GG2 34%; non-visible GG2 63%

Lower in MRI visible GG2 (p = 0.01)

Lower in MRI visible GG2 (p = 0.001)

  1. Abbreviations: IR: intermediate risk; LR: low risk; GG2: grade group 2; TFS: treatment free survival; MFS: metastases free survival; CSS: cancer specific survival; NR: not reported; UCSF: University of California San Francisco; PASS: Prostate Active Surveillance Study; MSKCC: Memorial Sloan Kettering Cancer Center; UCLH: University College London Hospital; MRI: magnetic resonance imaging.