SAKK 08/23: Addition of Darolutamide to first line treatment of mCRPC: a randomized open label phase II trial

2024-512132-29-00 Protocol SAKK 08/23 Therapeutic exploratory (Phase II) Ongoing, recruiting

Start 6 Aug 2025 · Status Ongoing, recruiting · 1 EU/EEA countries · 20 sites · Protocol SAKK 08/23

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Ongoing, recruiting
Participants planned 162
Countries 1
Sites 20

Metastatic castration-resistant prostate cancer

The main objective is to assess the efficacy of darolutamide, used in addition to physician-choice standard of care and then in maintenance therapy, on radiographic progression-free survival (rPFS) for patients in the first line setting of mCRPC.

Key facts

Sponsor
Swiss Group for Clinical Cancer Research
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male
Therapeutic area
Diseases [C] - Male Urogenital Diseases [C12]
Trial duration
6 Aug 2025 → ongoing
Decision date (initial)
2025-05-22
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy

The main objective is to assess the efficacy of darolutamide, used in addition to physician-choice standard of care and then in maintenance therapy, on radiographic progression-free survival (rPFS) for patients in the first line setting of mCRPC.

Conditions and MedDRA coding

Metastatic castration-resistant prostate cancer

Regulatory references

Plan to share IPD
No
EU CT numberTitleSponsor
2022-502084-38-00 (20321) An open-label, single arm, roll-over study to provide continued treatment with darolutamide in participants who were enrolled in previous Bayer sponsored studies Bayer Consumer Care AG
2022-501343-33-00 (21492 ARASTEP) A randomized, double-blind, placebo-controlled Phase 3 study of darolutamide plus androgen deprivation therapy (ADT) compared with placebo plus ADT in patients with high-risk biochemical recurrence (BCR) of prostate cancer Bayer Consumer Care AG

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 6

  1. Histologically or cytologically confirmed diagnosis of adenocarcinoma of the prostate.
  2. Castration resistance: tumor progression after orchiectomy or during treatment with GnRH analogues (agonists or antagonists)
  3. Non-surgically castrated patient agrees on ongoing use of GnRH analogues (agonists or antagonists) during the trial
  4. Metastatic disease, documented by imaging according to PCWG3 criteria
  5. Prior response to ARPI for at least 12 months in the mHSPC setting.
  6. Adequate bone marrow, hepatic and renal functions.

Exclusion criteria 11

  1. Presence of a small cell component.
  2. Prior systemic therapy for metastatic castration-resistant disease.
  3. Prior chemotherapy for mHSPC, except docetaxel.
  4. Prior LuPSMA or radium 223 for prostate cancer.
  5. Concomitant use of other anti-cancer drugs or radiotherapy except for local pain control and GnRH analogues.
  6. Severe or uncontrolled cardiovascular disease.
  7. Acute exacerbations of chronic illnesses, serious infections, or major surgery before start of treatment.
  8. Clinical or radiological evidence of current spinal cord compression.
  9. Any concomitant drugs contraindicated for use with darolutamide or known hypersensitivity to darolutamide.
  10. Known gastrointestinal (GI) disease or GI procedure that could interfere with the GI absorption or tolerance of darolutamide.
  11. Any other serious underlying medical, psychiatric, psychological, familial or geographical condition, which may interfere with the planned staging, treatment and follow-up, affect patient compliance or place the patient at high risk from treatment-related complications.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Radiographic progression-free survival.

Secondary endpoints 8

  1. Overall survival.
  2. Time to symptomatic/clinical progression.
  3. Time to PSA progression (defined according to PCWG3).
  4. Event-free survival (EFS) – event being defined as one of the following: - death from any cause - presence of radiographic progression and symptomatic/clinical progression; - presence of radiographic progression and PSA progression; - presence of symptomatic/clinical progression and PSA progression
  5. Objective response rate according to RECIST.
  6. PSA response (30%, 50%, 90% and best).
  7. Duration of PSA response (50%).
  8. AEs.

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

BAY 1841788

PRD1849573 · Product

Active substance
Darolutamide
Other product name
ODM-201 300 mg film-coated tablet
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL
Max daily dose
1200 mg milligram(s)
Max total dose
1200 mg milligram(s)
Max treatment duration
1 Week(s)
Authorisation status
Not Authorised
MA holder
BAYER AG
Paediatric formulation
No
Orphan designation
No

Auxiliary 5

Lutathera 370 MBq/mL solution for infusion

PRD5434501 · Product

Active substance
Lutetium (177LU) Oxodotreotide
Substance synonyms
177LU-DOTA-TYR3-OCTREOTATE, 177LU-DOTA0-TYR3-OCTREOTATE, 177LU-DOTATATE, DOTATATE LUTENIUM LU-177, LUTETIUM (177LU) DOTATATE, LUTETIUM (177LU)-N-[(4,7,10-TRICARBOXYMETHYL-1,4,7,10-TETRAAZACYCLODODEC-1-YL)ACETYL]-D-PHENYLALANYL-L-CYSTEINYL-L-TYROSYL-D-TRYPTOPHANYL-L-LYSYL-L-THREONINYL-L-CYSTEINYL-L-THREONINE-CYCLIC(2-7)DISULPHIDE
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS
Max daily dose
7400 MBq megabecquerel(s)
Max total dose
7400 MBq megabecquerel(s)
Max treatment duration
32 Week(s)
Authorisation status
Authorised
ATC code
V10XX04 — -
Marketing authorisation
EU/1/17/1226/001
MA holder
ADVANCED ACCELERATOR APPLICATIONS
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Cabazitaxel Accord 20 mg/ml concentrate for solution for infusion

PRD8294078 · Product

Active substance
Cabazitaxel
Substance synonyms
XRP6258, CABAZITAXELUM, XRP 6258
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS
Max daily dose
25 mg/m2 milligram(s)/square meter
Max total dose
25 mg/m2 milligram(s)/square meter
Max treatment duration
1 Week(s)
Authorisation status
Authorised
ATC code
L01CD04 — -
Marketing authorisation
EU/1/20/1448/001
MA holder
ACCORD HEALTHCARE S.L.U.
MA country
Liechtenstein
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Docetaxel Aurovitas 20 mg/ml concentrado para solución para perfusión

PRD10213565 · Product

Active substance
Docetaxel
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRAVENOUS
Max daily dose
25 mg/m2 milligram(s)/sq. meter
Max total dose
25 mg/m2 milligram(s)/sq. meter
Max treatment duration
1 Week(s)
Authorisation status
Authorised
ATC code
L01CD02 — DOCETAXEL
Marketing authorisation
72.635
MA holder
EUGIA PHARMA (MALTA) LTD
MA country
Spain
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Lynparza 150 mg film-coated tablets

PRD6152224 · Product

Active substance
Olaparib
Substance synonyms
AZD-2281, AZD2281
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL
Max daily dose
600 mg milligram(s)
Max total dose
600 mg milligram(s)
Max treatment duration
1 Week(s)
Authorisation status
Authorised
ATC code
L01XK01 — -
Marketing authorisation
EU/1/14/959/004
MA holder
ASTRAZENECA AB
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Xofigo 1100 kBq/mL solution for injection

PRD3220217 · Product

Active substance
Radium Ra 223 Dichloride
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INTRAVENIOUS INFUSION
Max daily dose
25 mg/m2 milligram(s)/square meter
Max total dose
25 mg/m2 milligram(s)/square meter
Max treatment duration
1 Week(s)
Authorisation status
Authorised
ATC code
V10XX03 — -
Marketing authorisation
EU/1/13/873/001
MA holder
BAYER AG
MA country
Norway
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Swiss Group for Clinical Cancer Research

Sponsor organisation
Swiss Group for Clinical Cancer Research
Address
Effingerstrasse 33
City
Bern
Postcode
3008
Country
Switzerland

Scientific contact point

Organisation
Swiss Group for Clinical Cancer Research
Contact name
Richard Cathomas

Public contact point

Organisation
Swiss Group for Clinical Cancer Research
Contact name
Richard Cathomas

Third parties 2

OrganisationCity, countryDuties
Grupo Espanol De Oncologia Genitourinaria-Socug
ORG-100013353
Madrid, Spain Code 2, Code 5
Evidenze Health Espana S.L.
ORG-100041907
Barcelona, Spain On site monitoring, Code 12

Locations

1 EU/EEA country · 20 investigational sites

By country

CountryMS statusPlanned subjectsSites
Spain Ongoing, recruiting 100 20
Rest of world
Switzerland
62

Investigational sites

Spain

20 sites · Ongoing, recruiting
University Hospital Son Espases
oncology, Carretera Valldemossa 79, 07120, Palma
Hospital San Pedro De Alcantara
oncology, Avenida De Pablo Naranjo Porras S/n, 10002, Caceres
Hospital Universitario Fundacion Jimenez Diaz
oncology, Avenida De Los Reyes Catolicos 2, 28040, Madrid
Hospital Universitario Hm Sanchinarro
oncology, Calle Ona 10, 28050, Madrid
Hospital Del Mar
oncology, Passeig Maritim De La Barceloneta 25-29, 08003, Barcelona
Hospital Universitario De Navarra
oncology, Irunlarrea Kalea 3, 31008, Pamplona
University Hospital Virgen Del Rocio S.L.
oncology, Avenida De Manuel Siurot S/n, 41013, Sevilla
Hospital Universitario De Salamanca
oncology, Paseo De San Vicente 58-182, 37007, Salamanca
Hospital Clinico Universitario De Valladolid
oncology, Avenida Ramon Y Cajal 3, 47003, Valladolid
Hospital Universitario Infanta Sofía
oncology, Paseo De Europa 34, 28702, San Sebastian De Los Reyes
Hospital Universitario Y Politecnico La Fe
oncology, Avenida Fernando Abril Martorell 106, 46026, Valencia
Parc Tauli Hospital Universitari
oncology, Parc Del Tauli 1, 08208, Sabadell
Consorcio Hospitalario Provincial De Castellon
oncology, Avinguda Del Doctor Clara 19, 12006, Castello De La Plana
Hospital Universitario Lucus Augusti
oncology, Rua Dr. Ulises Romero 1, 27003, Lugo
Hospital Universitario De Cruces
oncology, Cruces Plaza S/n, 48903, Barakaldo
Hospital Clinic De Barcelona
oncology, Calle Villarroel 170, 08036, Barcelona
Hospital Universitario Central De Asturias
oncology, Avenida De Roma S/n, 33011, Oviedo
Hospital Universitario Puerta De Hierro De Majadahonda
oncology, Calle De San Martin De Porres 4, 28035, Madrid
Hospital Universitario De Toledo
oncology, Avenue Del Rio Guadiana Sn, 45007, Toledo
Hospital Universitario Reina Sofia
oncology, Avenida Menendez Pidal S/n, 14004, Cordoba

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Spain 2025-08-06 2025-08-07

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 18 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol 2024-512132-29-00 2.1
Protocol (for publication) D1_Protocol_v2_TC 2.1
Protocol (for publication) SAKK 0823 Protocol v3 0 3
Protocol (for publication) SAKK 0823 Protocol v3 0 Spain tc 3
Recruitment arrangements (for publication) K1_Recruitment arrangement 1
Subject information and informed consent form (for publication) L1_SIS and ICF General 0.4
Subject information and informed consent form (for publication) L1_SIS and ICF Pregnant partner 0.1
Subject information and informed consent form (for publication) L1_SIS and ICF_TC 0.4
Subject information and informed consent form (for publication) SAKK 0823 eligibility worksheet v3 0 3.0
Subject information and informed consent form (for publication) SAKK 0823 eligibility worksheet v3 0 TC 3.0
Subject information and informed consent form (for publication) SAKK 0823 HIP CI Embarazo v0 2 19012026 cc 0.2
Subject information and informed consent form (for publication) SAKK 0823 HIP CI Embarazo v0 2 19012026 clean 0.2
Subject information and informed consent form (for publication) SAKK 0823 HIP CI General v0 5 19012026 cc 0.5
Subject information and informed consent form (for publication) SAKK 0823 HIP CI General v0 5 19012026 clean 0.5
Synopsis of the protocol (for publication) D1_ Protocol Synopsis v_ESP TC 2.1
Synopsis of the protocol (for publication) D1_Protocol Synopsis Spanish 2024-512132-29-00 2.1
Synopsis of the protocol (for publication) Sinopsis Prot v3 0 19012026 ESP clean 3
Synopsis of the protocol (for publication) Sinopsis Prot v3 0 19012026 ESP tc 3

Application history

2 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-02-18 Spain Acceptable
2025-05-21
2025-05-22
2 SUBSTANTIAL MODIFICATION SM-1 2026-02-12 Spain Acceptable
2026-04-21
2026-04-24