Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response
Simple Summary
Abstract
1. Introduction
2. Materials and Methods
Statistical Analysis
3. Results
3.1. Baseline Patients’ Characteristics
3.2. Decrease in PSA Levels
3.3. Decrease in Testosterone Levels
3.4. Safety
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
ADT | Androgen deprivation therapy |
GnRH | Gonadotropin-releasing hormone |
mHSPC | Metastatic hormone-sensitive prostate cancer |
PSA | Prostate-specific antigen |
LH | Luteinizing hormone |
FSH | Follicle-stimulating hormone |
EAU | European Association of Urology |
ARTA | Androgen-receptor-targeted agents |
AR | Androgen receptor |
CRPC | Castration-resistant prostate cancer |
ECOG PS | Eastern Cooperative Oncology Group performance status |
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All Patients (n = 27) n (%) | |
---|---|
Age at cancer diagnosis (years) | |
<65 | 9 (33.3) |
65–74 | 13 (48.2) |
≥75 | 5 (18.5) |
Mean age (SD) | 68.2 (6.9) |
Stage at cancer diagnosis | |
M0 | 12 (44.4) |
M1 | 15 (55.6) |
Gleason score (at cancer diagnosis) a | |
7 | 8 (30.8) |
8 | 12 (46.1) |
≥9 | 6 (23.1) |
Age at starting first line treatment (years) | |
<65 | 5 (18.5) |
65–74 | 13 (48.2) |
≥75 | 9 (33.3) |
Mean age (SD) | 71.1 (7.4) |
Performance Status (at starting first line treatment) | |
0 | 23 (85.2) |
1 | 4 (14.8) |
Disease volume (CHAARTED criteria) | |
Low-volume disease | 17 (63.0) |
High-volume disease | 10 (37.0) |
All Patients (n = 27) | Low Volume (n = 17) | High Volume (n = 10) | p-Value c | |
---|---|---|---|---|
PSA at baseline, Mean (SD) | 45.2 (63.1) | 33.4 (43.6) | 65.3 (86.1) | 0.38 |
PSA at day 14, Mean (SD) | 12.6 (23.4) | 11.7 (23.5) | 14.2 (24.4) | 0.50 |
PSA at day 28, Mean (SD) | 3.3 (6.0) | 2.9 (6.0) | 3.9 (6.4) | 0.37 |
Achieved a ≥50% PSA decrease at day 14 a | n (%) | |||
No | 6 (22.2) | 5 (29.4) | 1 (10.0) | |
Yes | 21 (77.8) | 12 (70.6) | 9 (90.0) | 0.36 |
Achieved a ≥90% PSA decrease at day 14 a | ||||
No | 23 (85.2) | 14 (82.3) | 9 (90.0) | |
Yes | 4 (14.8) | 3 (17.7) | 1 (10.0) | 0.99 |
Achieved a ≥50% PSA decrease at day 28 a | ||||
No | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
Yes | 27 (100.0) | 17 (100.0) | 10 (100.0) | - |
Achieved a ≥90% PSA decrease at day 28 a | ||||
No | 14 (51.8) | 10 (58.8) | 4 (40.0) | |
Yes | 13 (48.1) | 7 (41.2) | 6 (60.0) | 0.44 |
Patients with undetectable PSA at day 14 b | 1 (3.7) | 1 (5.9) | 0 (0.0) | 0.99 |
Patients with undetectable PSA at day 28 b | 2 (7.4) | 2 (11.8) | 0 (0.0) | 0.52 |
Patients with undetectable PSA at day 60 b | 9 (33.3) | 6 (35.3) | 3 (30.0) | 0.99 |
Patients with undetectable PSA (any time during follow-up) b | 20 (74.1) | 13 (76.5) | 7 (70.0) | 0.99 |
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Facchini, G.; D’Arienzo, A.; Nicastro, A.; Flauto, F.; Izzo, M.; Montella, L.; Riccardo, F.; Fusco, G.M.; Trama, F.; Lauro, G.D.; et al. Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response. Cancers 2025, 17, 2573. https://doi.org/10.3390/cancers17152573
Facchini G, D’Arienzo A, Nicastro A, Flauto F, Izzo M, Montella L, Riccardo F, Fusco GM, Trama F, Lauro GD, et al. Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response. Cancers. 2025; 17(15):2573. https://doi.org/10.3390/cancers17152573
Chicago/Turabian StyleFacchini, Gaetano, Andrea D’Arienzo, Antonella Nicastro, Fabiano Flauto, Michela Izzo, Liliana Montella, Filippo Riccardo, Giovanni Maria Fusco, Francesco Trama, Giovanni Di Lauro, and et al. 2025. "Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response" Cancers 17, no. 15: 2573. https://doi.org/10.3390/cancers17152573
APA StyleFacchini, G., D’Arienzo, A., Nicastro, A., Flauto, F., Izzo, M., Montella, L., Riccardo, F., Fusco, G. M., Trama, F., Lauro, G. D., Costanzo, G. D., Tucci, A. G., Iasiello, F., Di Lorenzo, L., Maddaluno, S., Liguori, C., Cupillo, R. A. d., Coppola, P., Minissale, A., ... Barraco, C. (2025). Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response. Cancers, 17(15), 2573. https://doi.org/10.3390/cancers17152573