Dott. G. Di Lorenzo
Metastatic hormone-sensitive
prostate cancer
JCO 2019
mHSPC 2018: Radiotherapy in oligometastatic disease mHSPC 2019: Addition of Enzalutamide to ADT
mHSPC 2019: Addition of Apalutamide to ADT
CRPC M0 2019: Darolutamide, Enzalutamide, Apalutamide
8 YEARS OF PROGRESS IN PROSTATE CANCER
Clinical decision making
in a rapidly evolving landscape of life-prolonging therapy…
JCO 2019
2015
TAX327 (DOC/P ‒ mCRPC): 2.7 mo2 TROPIC (DOC/P CAB/P ‒ mCRPC): 2.4 mo3-4 COU-AA-301 (DOC/P ABI/P ‒ mCRPC): 4.6 mo5 COU-AA-302 (ABI/P pre-DOC ‒ mCRPC): 4.4 mo6 PREVAIL (ENZA pre-DOC ‒ mCRPC): 4.0 mo7
STAMPEDE ‒ M1 (DOC/P + ADT ‒ mHSPC): 15.0 mo8
CHAARTED – M1 De Novo (DOC/P + ADT – mHSPC): 16.8 mo9 LATITUDE De Novo (ABI/P+ADT-mHSPC) 16.8 mo10
STAMPEDE (ABI/P +ADT –mHSPC): not yet reached
PROSPER – M0 CRPC (ENZA) not yet reached
SPARTAN –M0 CRPC (ABI/P) not yet reached TITAN: HSPC: APALUTAMIDE
HR: 0.67
ENZAMET: HSPC: ENZALUTAMIDE HR: 0.67
1. Kantoff PW. J Clin Oncol. 1999;7:2506–13; 2. Tannock IF. N Engl J Med. 2004;351:1502–12; 3. de Bono JS et al. Lancet.
2010;376:1147–54; 4. Sartor O. J Clin Oncol. 2011;29(S15):abstract 4525 (podium presentation); 5. Fizazi K . Lancet Oncol.
2012;13:983–92 (supplementary appendix); 6. Ryan CJ. Lancet Oncol. 2015;16:152–60; 7. Beer TM. Eur Urol. 2017;71:151–54; 8.
James ND et al. Lancet. 2016;387:1163–77; 9. Sweeney C et al. Ann Oncol. 2016;27(suppl 6):10 .Final Analysis of atitude ASCO GU 2019 Fizazi et al.Abstr. 141
2004 2010
2013 2011
2014 2015 2016 2017 2018
2019
History:
OS gain in prostate cancer
6
years
Local therapy
Androgen deprivation therapy (ADT)
Therapies after ADT
Death
ADT
mCRPC post- docetaxel
mCRPC
Asymptomatic or mildly symptomatic
M+
Hormone sensitive
ADT + Abiraterone
Enzalutamide
Abiraterone Abiraterone
Docetaxel Cabazitaxel
Enzalutamide
ADT + Docetaxel
tempo
Carico di malattia
Ca prostatico: uno scenario in evoluzione
RT+
OT/Docetaxel
CRPC M0
RADIUM 223
enzalutamide
Apalutamide
Darolutamide
RADIUM 223
ADT + Enza
ADT + Apalutam
.
Topics to discuss
Hormone-sensitive disease
-High volume/high risk
-Low volume/low risk
-Future perspectives
Abiraterone or Docetaxel:
this is the question... .
Overall Efficacy comparison
Subgroup Efficacy comparison
-Tumor burden
-Disease presentation
Toxicity
Quality of life
Costs and treatment duration
Vale et Al. Lancet Oncol 2016
Overall Survival in M1
Failure-free Survival in M1
Rydzewska et Al. Eur J Canc 2017
Overall Survival in M1
Progression-free survival in M1 (clin/radiol)
Kyriakoupulos et Al. JCO 2018
Overall Survival High-volume Overall Survival Low-volume
Kyriakoupulos et Al. JCO 2018 OS High-volume De novo M OS Low-volume De novo M
OS High-volume prior local Ther OS Low-volume prior local Ther
Clear Benefit
Likely to Benefit
No
Benefit
Hormone Sensitive Prostate Cancer
17
Latitude study
N Engl J Med. 2017 June 4 [Epub ahead of print]
Stampede study
N Engl J Med. 2017 June 3
[Epub ahead of print]
Internal Use Only
18
High risk – definition from LATITUDE
High-risk prognosis is defined as having at least 2 of the
following 3 risk factors : (1) Gleason score of ≥8
(2) Presence of 3 or more lesions on bone scan (3) Presence of visceral metastasis
The high-risk prognostic factor of Gleason score ≥8 was selected based on data from the SWOG 9346 study – Gleason score ≥8: strong predictor for risk of death (HR=1.58 and p <0.0001)
The second and third high-risk prognostic factors are both related to high volume disease (defined as 3 or more lesions by bone scan or involvement of viscera).
– A single-center study of 286 patients: OS was 3.1 years in those with high volume disease compared with 7.8 years in those with low volume disease
Clinicaltrials.gov: NCT01715285; Hussain M, et al. J Clin Oncol 2006;24:3984-3990;
Millikan RE, et al. J Clin Oncol 2008;26:5936-5942.
Statistically significant 38% risk reduction of death
0
0 6 12 18 24 30 36 42
20 40 60 80 100
Months
Overall Survival (%)
No. at risk
ADT + AA + P 597 565 529 479 388 233 93 9
602 564 504 432 332 172 57 2
Hazard ratio, 0.62 (95% CI, 0.51-0.76) P<0.0001
ADT + AA + P, not reached
ADT + placebo 34.7 mo
ADT + placebos
19 No. of events: 406 (48% of 852)
ADT + AA + P: 169 ADT + placebos: 237
Presented by: Karim Fizazi
Median follow-up:
30.4 months
Events
262 Control | 184 abiraterone plus prednisone
HR 0.63 95% CI 0.52 to 0.76 P-value 0.00000115
SOC SOC+AA P
OS – STAMPEDE “abiraterone plus prednisone comparison”
James N, et al. ASCO 2017. LBA5003 and Oral Abstract Session
It represents a 37%
improvement in
survival
Kyriakoupulos et Al. JCO 2018 Fizazi et Al. NEJM 2017
High volume Disease CHAARTED
High risk Disease LATITUDE
vs
Patients selection according to Tumor Burden in phase III trials of mHSPC
Docetaxel Abiraterone
High Volume vs Low Volume mHSPC (prospectively stratified)
CHAARTED Criteria
• Visceral metastases
• ≥4 Bone lesions with ≥1 beyond the vertebral bodies and pelvis
High Risk de novo mHSPC (all randomized) LATITUDE Criteria
At least two of the following:
• Gleason Score ≥8
• ≥3 Bone lesions
•Visceral metastases
NEWS FROM ESMO 2018
Abiraterone : improved OS also stratifing for High volume
POST -HOC-ANALYSIS FROM STAMPEDE
Sydes et ESMO 2017
Sydes et ESMO 2017
Aim: The objective of this study was to
compare ITCs with AAP + ADT vs Doc + ADT on HRQoL and pain PROs in patients with mCNPC.
Mean Change in PRO Scores from Baseline for FACT-P (A) and BPI (B) from LATITUDE and CHAARTED
ASCO GU 2018
Indirect comparison showed that patients receiving AAP + ADT had improvements in HRQoL after 3 months, compared with Doc + ADT; these
effects were sustained up to 1 year after treatment.
Feyerabend S, et al. Poster presented at ASCO-GU 2018; abstract 200.
Indirect treatment comparison (ITC) of
AA + P and Doc on PROs in mCNPC
Docetaxel or Abiraterone Summary
Docetaxel Abiraterone
Efficacy FFS Probably better
Efficacy OS Equally appropiate Equally appropiate High Volume Dis.
Low Volume Dis.
Tollerability Preferred Often preferred
Duration 4 months 2 years
Costs More affordable Less affordable
Despite early Docetaxel or Abiraterone 20% of patients die to 24 months
Kyriakoupulos et Al. JCO 2018
CHAARTED
Overall Survival High-volume
LATITUDE
Overall Survival High-risk
James et Al. NEJM 2017
29
Evidence network
After ASCO 2019????????
NSAA+ADT
ENZAMET9
Apa+ADT
TITAN10
Enza+ADT ARCHES8
ADT alone
AA+P+ADT Doce+ADT
LATITUDE1 STAMPEDE2 (Arm G vs A)
CHAARTED4 GETUG-AFU155
STAMPEDE (Arm C vs A)6 STAMPEDE3
(Arm C vs G)
Radiotherapy +ADT
STAMPEDE7 (Arm H vs A)
1. Fizazi K, et al. N Engl J Med. 2017 Jul 27;377(4):352-360; 2. James N, et al. N Engl J Med. 2017 Jul 27;377(4):338-351; 3. Sydes MR, et al. Ann Oncol. 2018 May 1;29(5):1235-1248; 4. Sweeney et al. N Eng J Med 2015; 378(8): 737-746; 5. Gravis G, et al. Eur Urol. 2016 Aug;70(2):256-62; 6.
James et al. Lancet 2016; 387(10024):1163-77; 7. Parker CC, et al. Ann Oncol 2018;29(Suppl 8):LBA5_PR; 8. Armstrong AJ, et al. ASCO-GU 2019.
Poster and oral presentation (Abstract 687); 9. NCT02446405; 10. NCT02489318
June, 2019
TITAN Study Design
3 1
mCSPC Patient Eligibility
Distant metastatic disease by ≥ 1 lesion on bone scan
Castration sensitive ECOG PS 0 or 1
On-Study Requirement Continuous ADT
Stratifications
Gleason score at diagnosis (≤ 7 vs ≥ 8) Region (North America and EU vs all other countries
Prior docetaxel (yes vs no)
Permitted Prior docetaxel
ADT ≤ 6 mo for mCSPC or ≤ 3 yr for local disease Local treatment completed ≥ 1 yr prior
Apalutamide 240 mg daily + ADT
(n = 525)
Placebo + ADT (n = 527)
Dual primary end points
•OS
•rPFS
Secondary end points
• Time to cytotoxic chemotherapy
• Time to pain progression
• Time to chronic opioid use
• Time to skeletal-related event
1:1 RANDOMIZATION
N = 1052
“All-comer” patient population
Exploratory end points
• Time to PSA progression
• Second progression-free survival (PFS2)
• Time to symptomatic progression
ECOG, Eastern Cooperative Oncology Group performance status;
PSA, prostate-specific antigen; rPFS, radiographic progression-free survival.
Kim N. Chi, MD
Dec 2015 – Jul 2017
TITAN OS: Apalutamide Significantly Reduced the Risk of Death by 33%
33
Kim N. Chi, MD
CI, confidence interval; NE, not evaluable.
Patients Who Were Alive (%)
100
75
50
25
0
No. at risk Apalutamide Placebo
525 527
513 509
490 473
410 387
165 142
14 16
0 0
0 6 12 18 24 30 36
Months
Apalutamide + ADT
Placebo + ADT
Apalutamide
(n = 525)
Placebo (n = 527) Median, mo (95%
CI)
NE (NE-NE) NE (NE-NE)
HR (95% CI) 0.67 (0.51-0.89)
P value 0.0053
82%
74%
First Subsequent Therapy for Prostate Cancer
34
Proportion of Patients receiving subsequent therapy Apalutamide + ADT Placebo + ADT
Patients who discontinued treatment for any reasona and remained alive, n 170 271
Patients receiving subsequent systemic prostate cancer therapy at data cutoff,c n (%) 87 (51.2) 190 (70.1)
Distribution of reported subsequent therapy n = 87 n = 190
Hormonal therapy, n (%) 44 (50.6) 98 (51.6)
Abiraterone acetate plus prednisone 21 (24.1) 45 (23.7)
Bicalutamide 16 (18.4) 31 (16.3)
Enzalutamide 3 (3.4) 17 (8.9)
Chemotherapy, n (%) 35 (40.2) 73 (38.4)
Docetaxel 29 (33.3) 67 (35.3)
Cabazitaxel 1 (0.4) 2 (1.1)
Other therapy, n (%) 8 (9.2) 19 (0.1)
Radium-223 2 (2.3) 4 (2.1)
Sipuleucel-T 2 (2.3) 5 (2.6)
aReasons for discontinuation were disease progression, adverse event, withdrawal by patient, death, physician decision, and protocol violation.
Kim N. Chi, MD
35
TITAN & SPARTAN – safety profile
STUDY TITAN1 SPARTAN2
POPULATION mHSPC “all comers” High risk nmCRPC
Apalutamide + ADT
(n = 524) Placebo + ADT
(n = 527) Apalutamide + ADT
(n = 803) Placebo + ADT (n = 398)
Any AE 507 (96.8) 509 (96.6) 775 (96.5) 371 (93.2)
Grade 3 or 4 AEs 221 (42.2) 215 (40.8) 362 (45.1) 136 (34.2)
Any SAE 104 (19.8) 107 (20.3) 199 (24.8) 92 (23.1)
Any AE leading to
treatment discontinuation 42 (8.0) 28 (5.3) 85 (10.6) 28 (7.0)
AE leading to death 10 (1.9) 16 (3.0) 10 (1.2) 1 (0.3)
Adverse Event, n (%) All Grades Grade ≥ 3 All Grades Grade ≥ 3 All Grades Grade ≥ 3 All Grades Grade ≥ 3
Rash 142 (27.1) 33 (6.3) 45 (8.5) 3 (0.6) 191 (23.8) 42 (5.2) 22 (5.5) 1 (0.3)
Fatigue 103 (19.7) 8 (1.5) 88 (16.7) 6 (1.1) 244 (30.4) 7 (0.9) 84 (21.1) 1 (0.3)
Fall 39 (7.4) 4 (0.8) 37 (7.0) 4 (0.8) 125 (15.6) 14 (1.7) 36 (9.0) 3 (0.8)
Hypothyroidism 34 (6.5) 0 6 (1.1) 0 65 (8.1) 0 8 (2.0) 0
Fracture 33 (6.3) 7 (1.3) 24 (4.6) 4 (0.8) 94 (11.7) 22 (2.7) 26 (6.5) 3 (0.8)
Seizure 3 (0.6) 1 (0.2) 2 (0.4) 0 2 (0.2) 0 0 0
1. Chi K, et al. ASCO 2019. Oral presentation (abstract 5006); 2. Smith MR, et al. N Engl J Med. 2018 Apr 12;378(15):1408-1418
Not head-to-head trials
June, 2019
June, 2019
ENZAMET Treatment
STRATIFICATION
Volume of metastases*
-High vs Low
Planned Early Docetaxel Yes vs No
ECOG PS - 0-1 vs 2
Anti-resorptive therapy -Yes vs No
Comorbidities ACE-27**: 0-1 vs 2-3 Study Site
R A N D O M I Z E
ARM A:
Testosterone Suppression + standard NSAA
ARM B:
Testosterone Suppression + Enzalutamide (160 mg/d)
Evaluate every 12 weeks
Evaluate every 12 weeks
CRPC therapy at investigator’s discretion at progression Follow for time to progression and overall survival
• Prior to randomization testosterone suppression up to 12 weeks and 2 cycles of docetaxel was allowed.
• Intermittent ADT and cyproterone were not allowed
• NSAA: bicalutamide; nilutamide; flutamide
• *High volume: visceral metastases and/or 4 or more bone metastases (at least 1 beyond pelvis and vertebral column)
• **Adult Co-morbidity Evaluation-27
Primary endpoint: Overall survival
Proportion alive at 36 months (95% CI)
NSAA Enzalutamide
0.72 (0.68 to 0.76) 0.80 (0.75 to 0.83)
Concurrent Docetaxel: Prespecified Subgroup of Interest (Biology and Treatment Implications)
Presented by: Christopher J. Sweeney, MBBS
Clinical Progression-Free Survival Overall Survival Testosterone
Suppression +
Docetaxel N=503
(71% High Volume) Testosterone
Suppression +
No Docetaxel N=622
(37% High Volume)
JCO 2019
Radiotherapy to the primary tumour for newly diagnosed, metastatic prostate cancer
(STAMPEDE): a randomised controlled phase 3 trial
•Christopher C Parker, MD
•Prof Nicholas D James, PhD
•Christopher D Brawley, MSc
• Prof Noel W Clarke, ChM
•Alex P Hoyle, MRCS
• Adnan Ali, MBBS
Lancet 2018, Oct.
Charteed Criteria:
Low volume:
until 3 lesions
TAKE HOME MESSAGES (1)
● Several agents have improved OS in mHSPC;
●
Patient and study characteristics: differences among the studies…..
Not head-to-head comparison studies
Docetaxel AAP+ADT ENZA+ADT APA+ADT
GETUG-15 CHAARTED STAMPEDE
(Arm C) LATITUDE STAMPEDE
(Arm G) ARCHES ENZAMET TITAN Study population
Total sample size, n 385 790 1776 1199 1917 1150 1125 1052
Patients with
mHSPC 100% 100% 61% 100% 52% 100% 100% 100%
Patient subtypes M1 all comers M1 all comers M0 M1 all
comers M1 de-novo
high-risk M0 M1 all
comers M1 all comers M1 all comers M1 all comers
Patients with high-risk/high
volume mHSPC 47.5% (183) 65 % (513) NE HR: 100% For M1 pts:
HR: 52.5%
HV: 55.4% HV: 63% HV: 52% HV: 63%
Patients with de
novo M1 71% 72.8% 58% 100% 49% 67%
61%
(61.7% ENZA and 59.5%
NSAA)
81%
(78.3% APA and 83.7%
PBO) Treatment
Median follow up 83.9 months 53.7 months 43 months 51.8# 40 months 14.4 months 34 months 22.7 months Study arm treatment
duration, median 8 cycles 86% received 6 cycles
77% received 6
cycles 25.8 months# 33.2 months* 12.8 months NA 20.5 months
Prior docetaxel
for mHSPC Exclusion Exclusion Exclusion Exclusion Exclusion 18% 16% 10.7%
Concurrent docetaxel for
mHSPC Not allowed Not allowed Not allowed Not allowed Not allowed Not
allowed 45% Not allowed