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BEST Papers 2014 on Prostate Cancer – Oncologia -

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1 BEST Papers 2014 on Prostate Cancer – Oncologia -
Elena Verzoni Oncologia Medica Fondazione IRCCS Istituto Nazionale Tumori Milano

2 Outline CHAARTED Abiraterone and Enzalutamide in mCRPC chemo-naive
Androgen receptor splice variant 7 (AR-V7)

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4 Trial design Primary endpoint: OS

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8 ABIRATERONE –ENZALUTAMIDE PRE-DOCETAXEL

9 Pazienti mCRPC chemo- naïve
PREVAIL Enzalutamide 160 mg QD (n=872) Co-Primari: rPFS (central review) OS Secondari: Tempo all’uso di oppiacei (dolore correlato al tumore) Tempo all’inizio della chemioterapia Tempo al primo evento scheletrico Tempo alla progressione PSA End points di efficacia Placebo QD (n =845) R A N D O M I Z A T O N 1:1 Progressione del PSA in accordo con i criteri PCWG2 o progressione radiologica Terapia di deprivazione androgenica in corso ECOG PS di grado 0 o 1 Asintomatici o lievemente sintomatici, in accordo con BPI-SF (scores da 0 a 1 [asintomatico] o da 2 a 3 [paucisintomatico]) Pazienti mCRPC chemo- naïve in progressione (N = 1717)

10 Abiraterone acetato 1000 mg QD Pazienti mCRPC chemo-naïve
COU-AA-302 Abiraterone acetato 1000 mg QD Prednisone 5 mg BID (n = 546) Co-Primari: rPFS (central review) OS Secondari: Tempo all’uso di oppiacei (dolore correlato al tumore) Tempo all’inizio della chemioterapia Tempo al deterioramento dell’ECOG PS TTPP End points di efficacia Placebo QD (n = 542) R A N D O M I Z A T O N 1:1 Progressione del PSA in accordo con i criteri PCWG2 o progressione radiologica Terapia di deprivazione androgenica in corso ECOG PS di grado 0 o 1 Asintomatici o lievemente sintomatici, in accordo con BPI- SF (scores da 0 a 1 [asintomatico] o da 2 a 3 [paucisintomatico]) Pazienti mCRPC chemo-naïve in progressione (N = 1088) Ryan et al, N Engl J Med 2013

11 Caratteristiche dei pazienti dello studio PREVAIL
Characteristics Enzalutamide (n=872) Placebo (n=845) Median age ≥75-84 ≥85 72 (43-93) 31.4% 4.9% 71 (42-93) 28.4% 6.2% Gleason score ≥8 at initial diagnosis 50.6% 52.4% Distribution of disease at screening Bone Lymph node Visceral disease (lung or liver) Visceral liver Visceral lung Visceral lung or liver Other soft tissue† 85.0% 50.1% 11.2% 4.6% 7.3% 0.7% 13.0% 81.7% 51.4% 12.5% 4.0% 8.9% 0.4% 12.4% No. of bone metastases at screening >10 32.7% 32.2% Baseline pain 0-1 on BPI SF-Q3 66.2% 67.5% BPI-SF, Brief Pain Inventory-Short Form (scale 0-10). Beer T et al. N Engl J Med 2014; epub (Supplementary Data)

12 Caratteristiche dei pazienti dello studio COUAA302
Abiraterone (n = 546) Prednisone (n = 542) Median age, years (range) 71 (44-95) 70 (44-90) Median time from initial diagnosis to first dose (years) 5.5 5.1 Median PSA (ng/mL) 42.0 37.7 Gleason score (≥ 8) at initial diagnosis 54% 50% Extent of disease Bone metastases 83% 80% > 10 bone metastases 49% 47% Soft tissuea Pain (BPI-SF) 0-1 66% 64% 2-3 32% 33% aExcludes visceral metastases. BPI-SF, Brief Pain Inventory-Short Form (scale 0-10). Ryan C et al. ESMO 2014; Abstract 7530 (oral presentation)

13 Enzalutamide: Analisi OS
OS 32.4 mos OS 30.2 mos Stopped at first interim rPFS 12 mo: 65% vs 14% Beer T et al. N Engl J Med 2014;

14 Abiraterone: Analisi OS
Median follow-up of 49.2 months Abiraterone treatment effect more pronounced when adjusting for 44% of prednisone patients who received subsequent abiraterone (HR = 0.74) Ryan C et al. ESMO 2014; Abstract 7530 (oral presentation)

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18 PFS

19 Grazie dell’attenzione!


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