Metastatic Castration-Resistant Prostate CancerPhase 2InavoPCNCT07287150
A Study to Test Inavolisib Treatment in Participants With Metastatic Castration-Resistant Prostate Cancer
A Phase 2 study testing Inavolisib, Enzalutamide and Abiraterone in people with Metastatic Castration-Resistant Prostate Cancer, run by Hoffmann-La Roche at 50 sites in 12 countries.
Trial summary
This study will evaluate the efficacy and safety of the combination of inavolisib plus enzalutamide compared with physician's choice of alternative androgen receptor pathway inhibitor (ARPi) or docetaxel in biomarker-selected participants with metastatic castrate-resistant prostate cancer (mCRPC) who have received one… Read more about this study
- Who is it for?
- Ages 18 years and older, men only
- Conditions the study is for
- Metastatic Castration-Resistant Prostate Cancer
- What is being tested?
- Inavolisib, Enzalutamide and Abiraterone
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 50 sitesin 12 countries
- Study dates
- 11 Mar 2026to 30 Jul 2029
- Phase
- Phase 2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Men only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically or cytologically confirmed adenocarcinoma of the prostate without small-cell or neuroendocrine features
- Progressive metastatic CRPC, defined as any of the following: PSA progression, defined by a minimum of two rising PSA values from three consecutive assessments with an interval of at least 7 days between assessments and with a minimal starting value of PSA >=1 ng/mL; The most recent qualifying PSA value must be determined within 14 days of enrollment; Soft tissue disease progression, defined by Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1); Bone disease progression, defined by PCWG3 criteria, with two or more new metastatic bone lesions on a whole-body radionuclide bone scan
- Treatment with at least one, but no more than one, prior second-generation ARPi (abiraterone, apalutamide, enzalutamide, darolutamide) for at least 12 weeks for HSPC or CRPC
- Availability of a tumor tissue specimen that is suitable (e.g., adequate quality and quantity) for use in determining biomarker status
- Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
- Fasting glucose <126 mg/dL and HbA1c < 6%
Who cannot join
- Presence of liver metastasis
- Prior treatment with any phosphatidylinositol-3-kinase (PI3K), protein kinase B (AKT), or mammalian target of rapamycin (mTOR) inhibitor, or with any agent with a mechanism of action of inhibiting the PI3K/AKT/mTOR pathway
- Type 1 or Type 2 diabetes mellitus
- Prior treatment for mCRPC with cytotoxic chemotherapy or novel hormonal treatments (e.g., androgen receptor degraders, CYP11 inhibitors), with the following treatments permitted: Prior docetaxel in mHSPC, providing no evidence of disease progression occurred during treatment or within 6 months of treatment completion; Prior docetaxel in the adjuvant or neoadjuvant setting providing no evidence of disease progression occurred during treatment or within 12 months of treatment completion; Prior treatment with sipuleucel-T, with the last dose administered >28 days prior to start of treatment; Prior PARPi therapy, as per local prescribing information, with the last dose administered >14 days prior to start of treatment; One prior RLT or radiotherapeutic agent (e.g., PSMA-targeted RLT, Radium 223) with the last dose administered >8 weeks prior to start of treatment
- Other concurrent anti-cancer therapy except for androgen deprivation therapy
- Treatment with strong CYP2C8 inhibitors, strong or moderate CYP2C8 inducers, or strong CYP3A4 inducers within 1 week or 5 drug-elimination half-lives, whichever is longer, prior to initiation of study treatment
- Transfusion of any blood product for the sole purpose of making a potential participant eligible for study inclusion or within 28 days of enrollment
Trial locations and contacts
50 sites in 12 countries. Contact the study team or a site near you to ask about taking part.
Reference Study ID Number: CO45813 https://forpatients.roche.com/ No attachments to email below. contact
Fastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry contact
50 sites in 12 countries
United States7 sites, 7 recruiting
- Recruiting
University of Colorado Cancer Center
Aurora, Colorado, 80124-5316
- Recruiting
Holden Comprehensive Cancer Center
Iowa City, Iowa, 52242-1009
- Recruiting
VA West Los Angeles Medical Center - (CRS) - NAVREF - PPDS
Los Angeles, California, 90073-1003
- Recruiting
Grand Strand Regional Medical Center
Myrtle Beach, South Carolina, 29572
- Recruiting
Lifespan Cancer Institute
Providence, Rhode Island, 02903-4923
- Recruiting
UCSF
San Francisco, California, 94115
- Recruiting
Montefiore Einstein Cancer Center
The Bronx, New York, 10461
Brazil5 sites, 5 recruiting
- Recruiting
Irmandade Da Santa Casa de Misericordia de Porto Alegre
Porto Alegre, Rio Grande do Sul, 90035-074
- Recruiting
Instituto Nacional de Cancer - INCa
Rio de Janeiro, 20230-130
- Recruiting
CEPHO - Centro de Estudos e Pesquisas em Hematologia e Oncologia
Santo André, São Paulo, 09060-650
- Recruiting
Fundacao Faculdade Regional de Medicina de Sao Jose Do Rio Preto Hospital de Base - PPDS
São José do Rio Preto, São Paulo, 15090-000
- Recruiting
Instituto Do Câncer Do Estado de São Paulo Octávio Frias de Oliveira - ICESP
São Paulo, 01246-000
South Korea5 sites, 5 recruiting
- Recruiting
Seoul National University Bundang Hospital
Seongnam-si, Gyeonggido, 13620
- Recruiting
Seoul National University Hospital
Seoul, 03080
- Recruiting
Severance Hospital, Yonsei University Health System
Seoul, 03722
- Recruiting
Asan Medical Center.
Seoul, 05505
- Recruiting
Samsung Medical Center
Seoul, 06351
Turkey (Türkiye)5 sites, 5 recruiting
- Recruiting
Ankara Universitesi Tip Fakultesi Hastaneleri - Cebeci Hastanesi
Ankara, 6590
- Recruiting
VM Medical Park Samsun Hastanesi
Atakum, 55200
- Recruiting
Koc Universitesi Hastanesi
Istanbul, 41380
- Recruiting
Izmir Medical Point Hospital
Izmir, 35101
- Recruiting
Medical Park Seyhan Hospital
Seyhan, 1140
Australia4 sites, 4 recruiting
- Recruiting
Sunshine Coast University Hospital
Birtinya, Queensland, 4575
- Recruiting
Box Hill Hospital
Box Hill, Victoria, 3128
- Recruiting
Royal Brisbane & Women's Hospital
Herston, Queensland, 4029
- Recruiting
Royal North Shore Hospital-Pacific Hwy
St Leonards, New South Wales, 2065
France4 sites, 4 recruiting
- Recruiting
EDOG - Institut Bergonie - PPDS
Bordeaux, Gironde, 33000
- Recruiting
Centre Léon Bérard
Lyon, 69008
- Recruiting
Institut Paoli Calmettes
Marseille, 13009
- Recruiting
Gustave Roussy
Villejuif, Val-de-Marne, 94805
Germany4 sites, 4 recruiting
- Recruiting
Universitätsklinikum Freiburg
Freiburg im Breisgau, Baden-Wurttemberg, 79106
- Recruiting
Universitätsklinikum Hamburg-Eppendorf
Hamburg, 20246
- Recruiting
Universitätsklinikum Münster
Münster, 48149
- Recruiting
Studienpraxis Urologie
Nürtingen, 72622
Italy4 sites, 4 recruiting
- Recruiting
Istituto Oncologico Veneto - Sede di Castelfranco Veneto c/o Ospedale San Giacomo Apostolo
Castelfranco Veneto, Veneto, 31033
- Recruiting
Ospedale San Raffaele S.r.l. - PPDS
Milan, Lombardy, 20132
- Recruiting
Fondazione IRCCS Istituto Nazionale dei Tumori
Milan, Lombardy, 20133
- Recruiting
Istituti Fisioterapici Ospitalieri
Rome, Lazio, 00144
Spain4 sites, 4 recruiting
- Recruiting
Hospital Universitario Cruces
Barakaldo, Vizcaya, 48903
- Recruiting
C.H. Regional Reina Sofia - PPDS
Córdoba, 14004
- Recruiting
Hospital Universitario 12 de Octubre
Madrid, 28041
- Recruiting
Fundacion Instituto Valenciano de Oncologia (IVO)
Valencia, 46009
Canada3 sites, 3 recruiting
- Recruiting
Centre de recherche du Centre Hospitalier de l'Universite de Montreal
Montreal, Quebec, H2X 0A9
- Recruiting
Jewish General Hospital
Montreal, Quebec, H3T 1E2
- Recruiting
Princess Margaret Cancer Centre
Toronto, Ontario, M5G 2M9
Mexico3 sites, 3 recruiting
- Recruiting
Productos y Servicios Oncologicos Acacias SA de CV
Benito Juárez, Mexico CITY (federal District), 3240
- Recruiting
Hospital MAC León
León, Guanajuato, 37530
- Recruiting
Health Pharma Professional Research S.A de C.V.
Mexico City, Mexico CITY (federal District), 3100
United Kingdom2 sites, 2 recruiting
- Recruiting
Velindre Cancer Centre
Cardiff, CF14 2TL
- Recruiting
The Royal Marsden in Sutton, Surrey - Downs Rd
Sutton, Surrey, SM2 5PT
About this study
Official title: A Phase II, Randomized, Multicenter, Open-Label Study Evaluating the Efficacy and Safety of the Combination of Inavolisib Plus Enzalutamide Versus Physician's Choice of ARPI or Docetaxel in Patients With Metastatic Castration-Resistant Prostate Cancer
This study will evaluate the efficacy and safety of the combination of inavolisib plus enzalutamide compared with physician's choice of alternative androgen receptor pathway inhibitor (ARPi) or docetaxel in biomarker-selected participants with metastatic castrate-resistant prostate cancer (mCRPC) who have received one prior second-generation ARPi.
- Being tested
- Inavolisib, Enzalutamide, Abiraterone, Docetaxel
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
InavolisibDrug
Inavolisib will be administered orally as per the schedule specified in the protocol.
EnzalutamideDrug
Enzalutamide will be administered orally as per the schedule specified in the protocol.
AbirateroneDrug
Abiraterone will be administered orally as per the schedule specified in the protocol.
DocetaxelDrug
Docetaxel will be administered intravenously as per the schedule specified in the protocol.
| Study group | Role | What they receive |
|---|---|---|
| Arm 1 | Experimental | Participants will receive Inavolisib plus enzalutamide Receives: Drug: Inavolisib; Drug: Enzalutamide |
| Arm 2 | Active comparator | Participants will receive either ARPi switch (enzalutamide or abiraterone) or docetaxel Receives: Drug: Enzalutamide; Drug: Abiraterone; Drug: Docetaxel |
What is being measured
The primary outcome is the main question the study is designed to answer.
Radiographic Progression-free Survival (rPFS)
Measured: Up to approximately 5 years
Secondary outcomes (7)
Percentage of Participants with Confirmed Composite Response Rate (RR)
Measured: Up to approximately 5 years
Percentage of Participants with Confirmed Prostate-Specific Antigen 90 (PSA90)
Measured: Up to approximately 5 years
Percentage of Participants with Confirmed Prostate-Specific Antigen 50 (PSA50)
Measured: Up to approximately 5 years
Objective Response Rate (ORR)
Measured: Up to approximately 5 years
Duration of Response (DOR)
Measured: Up to approximately 5 years
Overall Survival (OS)
Measured: Up to approximately 5 years
Percentage of Participants With Adverse Events (AEs)
Measured: Up to approximately 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Dec 2025
- Study start11 Mar 2026
- Primary completion31 Mar 2028 (estimated)
- Study completion30 Jul 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Metastatic Castration-Resistant Prostate CancerStudies of the same condition, open and under way.
- More trials run by Hoffmann-La RocheThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hoffmann-La Roche
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Clinical Trials, Study director, Hoffmann-La Roche
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07287150
- Sponsor's protocol ID
- CO45813
- Other IDs
- 2025-521327-67-00, 2025
- Acronym
- InavoPC
- Status last verified
- Nov 2026
- First submitted
- 11 Dec 2025
- Last updated
- 6 Nov 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data\_sharing
Study at a glance
From the registry record, last updated by the sponsor on 6 Nov 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase II, Randomized, Multicenter, Open-Label Study Evaluating the Efficacy and Safety of the Combination of Inavolisib Plus Enzalutamide Versus Physician's Choice of ARPI or Docetaxel in Patients With Metastatic Castration-Resistant Prostate Cancer
- ClinicalTrials.gov ID
- NCT07287150
- Acronym / sponsor ID
- InavoPC / CO45813
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Hoffmann-La RocheIndustry (pharma, biotech, devices)
- Study start
- 11 Mar 2026 (actual)
- Primary completion
- 31 Mar 2028 (estimated)
- Study completion
- 30 Jul 2029 (estimated)
- First posted
- 17 Dec 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will evaluate the efficacy and safety of the combination of inavolisib plus enzalutamide compared with physician's choice of alternative androgen receptor pathway inhibitor (ARPi) or docetaxel in biomarker-selected participants with metastatic castrate-resistant prostate cancer (mCRPC) who have received one prior second-generation ARPi.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Arm 1 | Experimental | Drug: Inavolisib, Drug: EnzalutamideParticipants will receive Inavolisib plus enzalutamide |
| Arm 2 | Active comparator | Drug: Enzalutamide, Drug: Abiraterone, Drug: DocetaxelParticipants will receive either ARPi switch (enzalutamide or abiraterone) or docetaxel |
Who may qualify
- Ages
- 18 years and older
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Histologically or cytologically confirmed adenocarcinoma of the prostate without small-cell or neuroendocrine features
- Progressive metastatic CRPC, defined as any of the following: PSA progression, defined by a minimum of two rising PSA values from three consecutive assessments with an interval of at least 7 days between assessments and with a minimal starting value of PSA >=1 ng/mL; The most recent qualifying PSA value must be determined within 14 days of enrollment; Soft tissue disease progression, defined by Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1); Bone disease progression, defined by PCWG3 criteria, with two or more new metastatic bone lesions on a whole-body radionuclide bone scan
- Treatment with at least one, but no more than one, prior second-generation ARPi (abiraterone, apalutamide, enzalutamide, darolutamide) for at least 12 weeks for HSPC or CRPC
- Availability of a tumor tissue specimen that is suitable (e.g., adequate quality and quantity) for use in determining biomarker status
- Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
Key exclusion criteria (7 listed)
- Presence of liver metastasis
- Prior treatment with any phosphatidylinositol-3-kinase (PI3K), protein kinase B (AKT), or mammalian target of rapamycin (mTOR) inhibitor, or with any agent with a mechanism of action of inhibiting the PI3K/AKT/mTOR pathway
- Type 1 or Type 2 diabetes mellitus
- Prior treatment for mCRPC with cytotoxic chemotherapy or novel hormonal treatments (e.g., androgen receptor degraders, CYP11 inhibitors), with the following treatments permitted: Prior docetaxel in mHSPC, providing no evidence of disease progression occurred during treatment or within 6 months of treatment completion; Prior docetaxel in the adjuvant or neoadjuvant setting providing no evidence of disease progression occurred during treatment or within 12 months of treatment completion; Prior treatment with sipuleucel-T, with the last dose administered >28 days prior to start of treatment; Prior PARPi therapy, as per local prescribing information, with the last dose administered >14 days prior to start of treatment; One prior RLT or radiotherapeutic agent (e.g., PSMA-targeted RLT, Radium 223) with the last dose administered >8 weeks prior to start of treatment
- Other concurrent anti-cancer therapy except for androgen deprivation therapy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| InavolisibInavolisib will be administered orally as per the schedule specified in the protocol. | Drug | Arm 1 |
| EnzalutamideEnzalutamide will be administered orally as per the schedule specified in the protocol. | Drug | Arm 1, Arm 2 |
| AbirateroneAbiraterone will be administered orally as per the schedule specified in the protocol. | Drug | Arm 2 |
| DocetaxelDocetaxel will be administered intravenously as per the schedule specified in the protocol. | Drug | Arm 2 |
Primary outcome
Radiographic Progression-free Survival (rPFS)
Time frame: Up to approximately 5 years
7 secondary outcomes
Percentage of Participants with Confirmed Composite Response Rate (RR)
Time frame: Up to approximately 5 years
Percentage of Participants with Confirmed Prostate-Specific Antigen 90 (PSA90)
Time frame: Up to approximately 5 years
Percentage of Participants with Confirmed Prostate-Specific Antigen 50 (PSA50)
Time frame: Up to approximately 5 years
Objective Response Rate (ORR)
Time frame: Up to approximately 5 years
Duration of Response (DOR)
Time frame: Up to approximately 5 years
Overall Survival (OS)
Time frame: Up to approximately 5 years
Percentage of Participants With Adverse Events (AEs)
Time frame: Up to approximately 5 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Nov 2026.
- Please use this form to submit your questions for a faster response: https://www.gene.com/contact-us/submit-medical-inquiry. Do not include or attach any medical records when emailing or completing the form. A nurse will respond within 24 business hours.Link provided by the sponsor.
- Individual participant dataSharing planned: Yes. For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data_sharing
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Reference Study ID Number: CO45813 https://forpatients.roche.com/ No attachments to email below. contact
Fastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry contact
Clinical Trials study director
Hoffmann-La Roche
50 sites in 12 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Inavolisib, Enzalutamide and Abiraterone in people with Metastatic Castration-Resistant Prostate Cancer, run by Hoffmann-La Roche at 50 sites in 12 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 6 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 50 sites in United States, Brazil, South Korea, Turkey (Türkiye), Australia and 7 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Reference Study ID Number: CO45813 https://forpatients.roche.com/ No attachments to email below. (888-662-6728 (U.S. and Canada), global-roche-genentech-trials@gene.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Radiographic Progression-free Survival (rPFS) (time frame: Up to approximately 5 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Nov 2026.