PURPOSE: To identify predictors of biochemical tumor control and present an updated prognostic nomogram for patients with clinically localized prostate cancer treated withbrachytherapy. METHODS AND MATERIALS: One thousand four hundred sixty-six patients with clinically localized prostate cancer were treated with brachytherapy alone or along with supplemental conformal radiotherapy. Nine hundred one patients (61%) were treated with Iodine-125 ((125)I) monotherapy to a prescribed dose of 144Gy, and 41 (4.5%) were treated withPalladium-103 ((103)Pd) monotherapy to a prescribed dose of 125Gy. In patients with higher risk features (n=715), a combined modality approach was used, which comprised (125)I or (103)Pd seed implantation or Iridium-192 high-dose rate brachytherapy followed 1-2 months later by supplemental intensity-modulated image-guided radiotherapy to the prostate. RESULTS: The 5-year prostate-specific antigen relapse-free survival (PSA-RFS) outcomes for favorable-, intermediate-, and high-risk patients were 98%, 95%, and 80%, respectively (p<0.001). Multivariate Cox regression analysis identified Gleason score (p<0.001) and pretreatment PSA (p=0.04) as predictors for PSA tumor control. In this cohort of patients, the use of neoadjuvant and concurrent androgen deprivation therapy did not influence biochemical tumor control outcomes. In the subset of patients treated with (125)I monotherapy, D(90)>140Gy compared with lower doses was associated with improved PSA-RFS. A nomogram predicting PSA-RFS was developed based on these predictors and had a concordance index of 0.70. CONCLUSIONS: Results with brachytherapy for all treatment groups were excellent. D(90) higher than 140Gy was associated with improved biochemical tumor control compared with lower doses. Androgen deprivation therapy use did not impact on tumor control outcomes in these patients.
RCT Entities:
PURPOSE: To identify predictors of biochemical tumor control and present an updated prognostic nomogram for patients with clinically localized prostate cancer treated with brachytherapy. METHODS AND MATERIALS: One thousand four hundred sixty-six patients with clinically localized prostate cancer were treated with brachytherapy alone or along with supplemental conformal radiotherapy. Nine hundred one patients (61%) were treated with Iodine-125 ((125)I) monotherapy to a prescribed dose of 144Gy, and 41 (4.5%) were treated with Palladium-103 ((103)Pd) monotherapy to a prescribed dose of 125Gy. In patients with higher risk features (n=715), a combined modality approach was used, which comprised (125)I or (103)Pd seed implantation or Iridium-192 high-dose rate brachytherapy followed 1-2 months later by supplemental intensity-modulated image-guided radiotherapy to the prostate. RESULTS: The 5-year prostate-specific antigen relapse-free survival (PSA-RFS) outcomes for favorable-, intermediate-, and high-risk patients were 98%, 95%, and 80%, respectively (p<0.001). Multivariate Cox regression analysis identified Gleason score (p<0.001) and pretreatment PSA (p=0.04) as predictors for PSA tumor control. In this cohort of patients, the use of neoadjuvant and concurrent androgen deprivation therapy did not influence biochemical tumor control outcomes. In the subset of patients treated with (125)I monotherapy, D(90)>140Gy compared with lower doses was associated with improved PSA-RFS. A nomogram predicting PSA-RFS was developed based on these predictors and had a concordance index of 0.70. CONCLUSIONS: Results with brachytherapy for all treatment groups were excellent. D(90) higher than 140Gy was associated with improved biochemical tumor control compared with lower doses. Androgen deprivation therapy use did not impact on tumor control outcomes in these patients.
Authors: Michael J Zelefsky; Gil'ad N Cohen; Walter R Bosch; Lisa Morikawa; Najma Khalid; Cheryl L Crozier; W Robert Lee; Anthony Zietman; Jean Owen; J Frank Wilson; Phillip M Devlin Journal: Brachytherapy Date: 2012-07-21 Impact factor: 2.362
Authors: Martin T King; Nicola J Nasser; Nitin Mathur; Gil'ad N Cohen; Marisa A Kollmeier; Jasper Yuen; Hebert A Vargas; Xin Pei; Yoshiya Yamada; Kristen L Zakian; Marco Zaider; Michael J Zelefsky Journal: Brachytherapy Date: 2016-04-20 Impact factor: 2.362
Authors: Giovanni Fellin; Maria A Mirri; Luigi Santoro; Barbara A Jereczek-Fossa; Claudio Divan; Salvatore Mussari; Francesco Ziglio; Beniamino La Face; Fernando Barbera; Michela Buglione; Laura Bandera; Barbara Ghedi; Nadia G Di Muzio; Andrea Losa; Paola Mangili; Luciano Nava; Renato Chiarlone; Nunzia Ciscognetti; Emilio Gastaldi; Federica Cattani; Ruggero Spoto; Andrea Vavassori; Francesca R Giglioli; Alessia Guarneri; Valentina Cerboneschi; Marcello Mignogna; Mauro Paoluzzi; Valentina Ravaglia; Costanza Chiumento; Stefania Clemente; Vincenzo Fusco; Roberto Santini; Marco Stefanacci; Francesco P Mangiacotti; Marco Martini; Tiziana Palloni; Giuseppe Schinaia; Grazia Lazzari; Giovanni Silvano; Stefano Magrini; Umberto Ricardi; Riccardo Santoni; Roberto Orecchia Journal: Br J Radiol Date: 2016-07-07 Impact factor: 3.039
Authors: Andrew Warner; Tom Pickles; Juanita Crook; Andre-Guy Martin; Luis Souhami; Charles Catton; Himu Lukka; George Rodrigues Journal: Cureus Date: 2015-06-11
Authors: Jose Luis Guinot; Jose Vicente Ricós; Maria Isabel Tortajada; Miguel Angel Santos; Juan Casanova; Jose Clemente; Josefa Samper; Paula Santamaría; Leoncio Arribas Journal: J Contemp Brachytherapy Date: 2015-08-18