Clinical trial • Phase III • Oncology

IFINATAMAB DERUXTECAN for Metastatic castration-resistant prostate cancer

Phase III trial of IFINATAMAB DERUXTECAN for Metastatic castration-resistant prostate cancer.

Overview

Trial Therapeutic Area
Oncology
Trial Disease
Metastatic castration-resistant prostate cancer
Trial Stage
Phase III
Drug Modality
ADC|Small molecule

Key dates

Initial CTIS Submission Date
19-02-2025
First CTIS Authorization Date
10-06-2025

Trial design

open-label, docetaxel (comparator; product listed with dosing unit mg/m2, product maxdailydoseamount 75 mg/m2; intravenous).-controlled Phase III trial in Austria, Denmark, France and others.

Open Label
Yes
Comparator
Docetaxel (comparator; product listed with dosing unit mg/m2, product maxDailyDoseAmount 75 mg/m2; intravenous).
Target Sample Size
940

Eligibility

Recruits 940 No vulnerable population selected (isVulnerablePopulationSelected: false). Informed consent will be obtained using country-specific Subject information and informed consent forms (multiple 'L1_ICF_Main consent' documents listed for participating countries). No assent/minor-consent procedures are described in the available documents..

Vulnerable Population
No vulnerable population selected (isVulnerablePopulationSelected: false). Informed consent will be obtained using country-specific Subject information and informed consent forms (multiple 'L1_ICF_Main consent' documents listed for participating countries). No assent/minor-consent procedures are described in the available documents.

Inclusion criteria

  • {"criterion_text":"- Has histologically- or cytologically-confirmed adenocarcinoma of the prostate without small cell histology"}
  • {"criterion_text":"- Has prostate cancer progression while on androgen deprivation therapy (ADT) (or post bilateral orchiectomy) within 6 months prior to Screening"}
  • {"criterion_text":"- Has current evidence of metastatic disease documented by either bone lesions on bone scan and/or soft tissue disease by computed tomography (CT)/magnetic resonance imaging (MRI)"}
  • {"criterion_text":"- Has received prior treatment with 1 or 2 androgen receptor pathway inhibitors (ARPIs) and progressed during or after at least 8 weeks of treatment"}
  • {"criterion_text":"- Has provided tumor tissue from a core or excisional biopsy from soft tissue not previously irradiated and obtained after disease progression on the most recent prior therapy"}
  • {"criterion_text":"- Has recovered from adverse events (AEs) due to previous anticancer therapies"}

Exclusion criteria

  • {"criterion_text":"- Is unable to swallow tablets/capsules"}
  • {"criterion_text":"- Has a history of (non-infectious) interstitial lung disease (ILD)/pneumonitis that required steroids or has current ILD/pneumonitis"}
  • {"criterion_text":"- Has clinically severe pulmonary compromise resulting from intercurrent pulmonary illnesses"}
  • {"criterion_text":"- Has uncontrolled or significant cardiovascular disease"}
  • {"criterion_text":"- Has received prior treatment with a taxane-based chemotherapy agent for metastatic castration-resistant prostate cancer (mCRPC)"}
  • {"criterion_text":"- Has had prior discontinuation of an antibody drug conjugate (ADC) that consists of an exatecan derivative (eg, trastuzumab deruxtecan) due to treatment-related toxicities"}
  • {"criterion_text":"- Has a “superscan” bone scan"}

Endpoints

Primary endpoints

  • {"endpoint_text":"- Overall Survival (OS)","definition_or_measurement_approach":"Overall survival (OS)."}
  • {"endpoint_text":"- Radiographic progression-free survival (rPFS)","definition_or_measurement_approach":"Radiographic progression-free survival (rPFS) per Prostate Cancer Working Group (PCWG) Modified RECIST 1.1 as assessed by blinded independent central review (BICR)."}

Secondary endpoints

  • {"endpoint_text":"- Time to first subsequent therapy (TFST)","definition_or_measurement_approach":"TFST (time to first subsequent therapy) as specified in secondary objectives."}
  • {"endpoint_text":"- Objective response rate (ORR)","definition_or_measurement_approach":"ORR per PCWG Modified RECIST 1.1 as assessed by blinded independent central review (BICR)."}
  • {"endpoint_text":"- Duration of Response (DOR)","definition_or_measurement_approach":"Duration of Response (DOR) per PCWG Modified RECIST 1.1 as assessed by BICR."}
  • {"endpoint_text":"- Time to pain progression (TTPP)","definition_or_measurement_approach":"TTPP as listed in secondary endpoints (measurement approach not further specified in provided data)."}
  • {"endpoint_text":"- Time to prostate-specific antigen (PSA) progression","definition_or_measurement_approach":"Time to PSA progression as listed in secondary endpoints (measurement approach not further specified in provided data)."}
  • {"endpoint_text":"- PSA response rate","definition_or_measurement_approach":"PSA response rate as listed in secondary endpoints (definition not further specified in provided data)."}
  • {"endpoint_text":"- Time to first symptomatic skeletal-related events (SSRE)","definition_or_measurement_approach":"Time to first SSRE as listed in secondary endpoints (definition not further specified in provided data)."}
  • {"endpoint_text":"- Number of Participants Who Experience One or More Adverse Events (AEs)","definition_or_measurement_approach":"Count of participants experiencing one or more AEs (safety endpoint)."}
  • {"endpoint_text":"- Number of Participants Who Discontinue Study Treatment Due to an AE","definition_or_measurement_approach":"Count of participants discontinuing study treatment due to an AE (safety endpoint)."}

Recruitment

Planned Sample Size
940
Recruitment Window Months
67
Consent Approach
Informed consent is obtained using country-specific Subject Information and Informed Consent Forms (multiple 'L1_ICF_Main consent' documents exist for participating countries and languages). Optional consent modules (for example: optional modules such as pregnant partner, optional follow-up modules, Greenphire adults) are provided as separate documents. No assent/minor consent procedures are described.

Geography

Total Number Of Participants
508

Austria

Earliest CTIS Part Ii Submission Date
22-05-2025
Latest Decision Or Authorization Date
11-06-2025
Processing Time Days
20
Number Of Participants
18

Denmark

Earliest CTIS Part Ii Submission Date
26-05-2025
Latest Decision Or Authorization Date
10-06-2025
Processing Time Days
15
Number Of Participants
30

France

Earliest CTIS Part Ii Submission Date
07-04-2025
Latest Decision Or Authorization Date
13-06-2025
Processing Time Days
67
Number Of Participants
70

Ireland

Earliest CTIS Part Ii Submission Date
28-05-2025
Latest Decision Or Authorization Date
13-06-2025
Processing Time Days
16
Number Of Participants
15

Italy

Earliest CTIS Part Ii Submission Date
15-04-2025
Latest Decision Or Authorization Date
13-06-2025
Processing Time Days
59
Number Of Participants
55

Norway

Earliest CTIS Part Ii Submission Date
02-06-2025
Latest Decision Or Authorization Date
12-06-2025
Processing Time Days
10
Number Of Participants
24

Poland

Earliest CTIS Part Ii Submission Date
13-05-2025
Latest Decision Or Authorization Date
16-06-2025
Processing Time Days
34
Number Of Participants
30

Spain

Earliest CTIS Part Ii Submission Date
14-05-2025
Latest Decision Or Authorization Date
13-06-2025
Processing Time Days
30
Number Of Participants
80

Sweden

Earliest CTIS Part Ii Submission Date
15-05-2025
Latest Decision Or Authorization Date
26-08-2025
Processing Time Days
103
Number Of Participants
20

Czechia

Earliest CTIS Part Ii Submission Date
16-04-2025
Latest Decision Or Authorization Date
08-09-2025
Processing Time Days
145
Number Of Participants
30

Netherlands

Earliest CTIS Part Ii Submission Date
16-05-2025
Latest Decision Or Authorization Date
28-08-2025
Processing Time Days
104
Number Of Participants
58

Greece

Earliest CTIS Part Ii Submission Date
18-03-2025
Latest Decision Or Authorization Date
16-06-2025
Processing Time Days
90
Number Of Participants
28

Germany

Earliest CTIS Part Ii Submission Date
23-05-2025
Latest Decision Or Authorization Date
05-12-2025
Processing Time Days
196
Number Of Participants
50

Sponsor

Primary sponsor

Full Name
Merck Sharp & Dohme LLC
Organisation Type
Pharmaceutical company
Country Of Registered Address
United States

Contract research organisations

Name
Eresearchtechnology Inc. (Clario)
Responsibilities
Blinded Independent Central Imaging Review; clinical adjudication review of ILD/pneumonitis; contacts: michelle.flores@clario.com, Victoria.Livesey@Clario.com, Prerna.Sharma@clario.com
Name
Signant Health LLC
Responsibilities
E-source/eCOA/clinical support (sponsorDuties code 3); contact salvador.gomez@signanthealth.com
Name
Parexel International Corp.
Responsibilities
EUB services (call center and medical services); contact +MSDEMU@parexel.com
Name
IQVIA Limited
Responsibilities
Operational / site support functions (sponsorDuties code 4); contact morgan.coleman@iqvia.com

Third parties

  • {"country":"United States","full_name":"Eresearchtechnology Inc.","duties_or_roles":"sponsorDuties codes present (e.g. code 7) / contact michelle.flores@clario.com","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Ventana Medical Systems Inc.","duties_or_roles":"sponsorDuties code 4 (role stated); contact melissa.young@roche.com","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Signant Health LLC","duties_or_roles":"sponsorDuties code 3 (role stated); contact salvador.gomez@signanthealth.com","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Eresearchtechnology Inc.","duties_or_roles":"sponsorDuties value: Blinded Independent Central Imaging Review (clinical adjudication contacts listed); contact Victoria.Livesey@Clario.com","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Eresearchtechnology Inc.","duties_or_roles":"sponsorDuties value: Clinical adjudication review of safety events for Interstitial Lung Disease and Pneumonitis; contact Prerna.Sharma@clario.com","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Parexel International Corp.","duties_or_roles":"sponsorDuties value: EUB services (call center and medical services)","organisation_type":"Pharmaceutical company"}
  • {"country":"United Kingdom","full_name":"IQVIA Limited","duties_or_roles":"sponsorDuties code 4 (role stated); contact morgan.coleman@iqvia.com","organisation_type":"Pharmaceutical company"}

Investigational products

Investigational Product Name
Ifinatamab Deruxtecan
Active Substance
IFINATAMAB DERUXTECAN
Modality
ADC
Routes Of Administration
INTRAVENOUS
Route
INTRAVENOUS
Investigational Product Name
DOCETAXEL
Active Substance
DOCETAXEL
Modality
Small molecule
Routes Of Administration
INTRAVENOUS
Route
INTRAVENOUS
Maximum Dose
75 mg/m2 (product maxDailyDoseAmount: 75 mg/m2)
Investigational Product Name
PREDNISOLONE / PREDNISONE
Active Substance
BETAMETHASONE SODIUM PHOSPHATE / PREDNISOLONE
Modality
Small molecule
Routes Of Administration
ORAL
Route
ORAL
Maximum Dose
10 mg (product maxDailyDoseAmount: 10 mg)

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