Multimodal Approach in Patients With mHSPC. Randomized Trial of APA+ADT vs APA-ADT and Local Treatment

NCT ID: NCT05649943

Last Updated: 2025-09-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

566 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-01

Study Completion Date

2029-01-01

Brief Summary

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Italian multicenter study, will enroll \~566 pts with oligometastatic hormone sensitive prostate cancer who are candidates to receive treatment with apalutamide.

After 6 months from the start of treatment, patients will be randomized to receive local treatment based on the investigator's choice ( either one between primary radiotherapy or cytoreductive prostatectomy), in addition to apalutamide, or to continue just with medical therapy.

Detailed Description

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Primary end point: To determine whether treatment with apalutamide in combination with androgen-deprivative therapy for 6 months followed by locoregional treatment with radiotherapy or radical prostatectomy has better efficacy than medical treatment with apalutamide + ADT alone in terms of radiographic progression-free survival (rPFS), specifically time to radiographic progression in soft tissue per RECIST 1.1 or in bone per PCWG3 criteria by investigator, or death. Secondary end points: To evaluate tumor shrinkage after locoregional approach and to evaluate short and long term side effects after locoregional surgery or RT, time to PSA progression, time to castration resistance, cancer specific survival, overall survival and quality of life according to EPIC-26 and EQ-5D-5L questionnaires.

Conditions

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Metastatic Hormone-Sensitive Prostate Cancer (mHSPC)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Randomized
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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APA + ADT + RP/RT

Apalutamide 240 mg, four 60 mg tablets as an oral single daily dose, according to clinical practice, plus Androgen Deprivation Therapy (ADT) plus clinician-driven choice local treatment with Radiotherapy or Radical Prostatectomy, six months after starting treatment with apalutamide

Group Type OTHER

APA + ADT

Intervention Type DRUG

All participants will receive apalutamide 240 mg (4 x 60 mg) tablets orally once daily. Apalutamide is distributed in Italy under the trade name of Erleada® 60 mg.

All patients not undergoing surgical castration should also continue medical castration by taking a gonadotropin-releasing hormone (GnRHa) analogue during treatment.

Local Treatmetn RT or RP

Intervention Type PROCEDURE

Patients who will undergo radiotherapy as a local treatment must be treated according to the following scheme:

External beam radiotherapy administered at 36 Gy in six consecutive weekly fractions of 6 Gy, or 55 Gy in 20 daily fractions of 2・75 Gy over 4 weeks.

Radiation therapy will be given with the patient supine and with a full bladder and an empty rectum. The planned target volume is prostate only, with an 8 mm margin posteriorly and a 10 mm margin elsewhere.

No RT on lymph nodes is foreseen. RT should begin 6 months after the first dose of apalutamide (+/- 2 weeks).

Radical prostatectomy should be performed 6 months after the first dose of apalutamide (+/- 2 weeks).

APA + ADT

Apalutamide 240 mg, four 60 mg tablets as an oral single daily dose, according to clinical practice, plus Androgen Deprivation Therapy (ADT)

Group Type OTHER

APA + ADT

Intervention Type DRUG

All participants will receive apalutamide 240 mg (4 x 60 mg) tablets orally once daily. Apalutamide is distributed in Italy under the trade name of Erleada® 60 mg.

All patients not undergoing surgical castration should also continue medical castration by taking a gonadotropin-releasing hormone (GnRHa) analogue during treatment.

Interventions

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APA + ADT

All participants will receive apalutamide 240 mg (4 x 60 mg) tablets orally once daily. Apalutamide is distributed in Italy under the trade name of Erleada® 60 mg.

All patients not undergoing surgical castration should also continue medical castration by taking a gonadotropin-releasing hormone (GnRHa) analogue during treatment.

Intervention Type DRUG

Local Treatmetn RT or RP

Patients who will undergo radiotherapy as a local treatment must be treated according to the following scheme:

External beam radiotherapy administered at 36 Gy in six consecutive weekly fractions of 6 Gy, or 55 Gy in 20 daily fractions of 2・75 Gy over 4 weeks.

Radiation therapy will be given with the patient supine and with a full bladder and an empty rectum. The planned target volume is prostate only, with an 8 mm margin posteriorly and a 10 mm margin elsewhere.

No RT on lymph nodes is foreseen. RT should begin 6 months after the first dose of apalutamide (+/- 2 weeks).

Radical prostatectomy should be performed 6 months after the first dose of apalutamide (+/- 2 weeks).

Intervention Type PROCEDURE

Other Intervention Names

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Apalutamide 240 mg + Androgen Deprivation Therapy Local treatment with radiotherapy or radical prostatectomy, clinician-driven choice

Eligibility Criteria

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Inclusion Criteria

* Age \> 18
* Histologically confirmed diagnosis of prostate adenocarcinoma
* Metastatic disease documented by ≥1 bone lesion with Technetium 99m (99mTc) bone scan. Individuals with only one bone lesion should have confirmation of that lesion on CT or MRI.
* Eastern Cooperative Oncology Group Performance Status (ECOG PS) Grade ≤ 2
* No previous treatment with antiandrogens or GnRH analogues, or a treatment ≤ 3 months.
* No previous systemic or local treatment for prostate adenocarcinoma, including pelvic radiotherapy.
* Laboratory values at the time of screening:

a. Neutrophils ≥ 1500/μL b. Hemoglobin ≥ 9.0 mg/μL (no transfusions in the past 28 days) c. Platelets ≥ 100,000/μL d. Creatinine ≤ 2 x upper limit of normal and serum albumin ≥ 3.0 g/dL f. Total bilirubin ≤ 1.5 x upper limit of normal \[NOTE: In subjects with Gilbert syndrome, if total bilirubin is \>1.5 x ULN, measure direct and indirect bilirubin, and if direct bilirubin is ≤ 1.5 x ULN subjects may be eligible\]; g. AST and ALT ≤ 2.5 x upper limit of normal
* Able to swallow Apalutamide tablets whole.
* All subjects must sign an Informed Consent Form indicating that they understand the purpose of the study and its procedures and intend to participate. The subject must be willing and must be able to comply with the restrictions specified in this protocol.


* Age \>18 years
* Clinical stage cT3
* Robot-assisted radical prostatectomy with iliac obturator lymphadenectomy
* Surgical piece management criteria similar to Proteus criteria.

Exclusion Criteria

* Pathologic findings consistent with small cell, ductal, or neuroendocrine prostate cancer.
* Known brain metastases.
* Lymph node metastases only.
* Visceral metastases.
* Patients not eligible for surgery or radiotherapy.
* Unacceptable increase in cardiovascular risk, defined as the occurrence of at least one of the following episodes in the 6 months prior to randomization: unstable angina, myocardial infarction, symptomatic congestive heart failure, clinically significant thromboembolic events (e.g., pulmonary embolism), or clinically significant ventricular arrhythmias .
* Uncontrolled high blood pressure (systolic blood pressure \> 160 mmHg or diastolic blood pressure \> 100 mmHg).
* Previous treatment with antiandrogens, GnRH analogues, or other systemic treatments for adenocarcinoma of the prostate.
* Previous local treatment with surgery and/or radiotherapy.
* Any prior malignancy (except adequately treated basal cell carcinoma or a squamous cell skin carcinoma, superficial bladder carcinoma, or any other in situ carcinoma currently in complete remission) within 5 years of randomization.
* Known allergies, hypersensitivity or intolerance to the excipients of Apalutamide.
* Patients who, within 28 days prior to randomisation, have received:

1. transfusions (red blood cells and/or platelets);
2. hematopoietic growth factors;
3. major surgery.
* Symptomatic and/or chronic viral hepatitis; chronic liver disease; moderate or severe liver failure (class B and C according to the Child-Pugh scale); encephalopathy, ascites or thrombo-haemorrhagic disorders secondary to liver failure.
* Gastrointestinal disorders affecting drug absorption
* Active infections requiring systemic therapy such as human immunodeficiency virus (HIV);
* Any condition or situation which, in the judgment of the investigator, precludes participation in this trial.


* Contraindication for surgery
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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ASST Santi Paolo e Carlo

OTHER

Sponsor Role collaborator

European Institute of Oncology

OTHER

Sponsor Role collaborator

Fondazione IRCCS Istituto Nazionale dei Tumori, Milano

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Valentina Guadalupi, MD

Role: PRINCIPAL_INVESTIGATOR

Fondazione IRCCS Istituto Nazionale dei Tumori, Milano

Locations

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European Institute of Oncology

Milan, Lombardy, Italy

Site Status NOT_YET_RECRUITING

ASST Santi Paolo e Carlo

Milan, Lombardy, Italy

Site Status NOT_YET_RECRUITING

Istituto Tumori Milano

Milan, Mi, Italy

Site Status RECRUITING

Countries

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Italy

Central Contacts

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Valentina Guadalupi, MD

Role: CONTACT

00390223903811

Facility Contacts

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Barbara Alicja Jereczek, MD

Role: primary

Bernardo Rocco, MD

Role: primary

Valentina Guadalupi, MD

Role: primary

+390223902811

MD

Role: backup

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Other Identifiers

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APP

Identifier Type: -

Identifier Source: org_study_id

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