Ignite Creation Date:
2025-12-24 @ 3:15 PM
Ignite Modification Date:
2025-12-26 @ 11:44 AM
Study NCT ID:
NCT07299292
Status:
RECRUITING
Last Update Posted:
2025-12-23
First Post:
2025-12-09
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Castration With Abiraterone 250 mg Without LHRH Analogs or Blockers in Patients With Prostate Cancer Requiring Hormonal Intensification (Multicenter Phase 2)
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D011471', 'term': 'Prostatic Neoplasms'}, {'id': 'D004194', 'term': 'Disease'}], 'ancestors': [{'id': 'D005834', 'term': 'Genital Neoplasms, Male'}, {'id': 'D014565', 'term': 'Urogenital Neoplasms'}, {'id': 'D009371', 'term': 'Neoplasms by Site'}, {'id': 'D009369', 'term': 'Neoplasms'}, {'id': 'D005832', 'term': 'Genital Diseases, Male'}, {'id': 'D000091662', 'term': 'Genital Diseases'}, {'id': 'D000091642', 'term': 'Urogenital Diseases'}, {'id': 'D011469', 'term': 'Prostatic Diseases'}, {'id': 'D052801', 'term': 'Male Urogenital Diseases'}, {'id': 'D010335', 'term': 'Pathologic Processes'}, {'id': 'D013568', 'term': 'Pathological Conditions, Signs and Symptoms'}]}, 'interventionBrowseModule': {'meshes': [{'id': 'C089740', 'term': 'abiraterone'}, {'id': 'D005502', 'term': 'Food'}, {'id': 'D011241', 'term': 'Prednisone'}], 'ancestors': [{'id': 'D000066888', 'term': 'Diet, Food, and Nutrition'}, {'id': 'D010829', 'term': 'Physiological Phenomena'}, {'id': 'D019602', 'term': 'Food and Beverages'}, {'id': 'D011244', 'term': 'Pregnadienediols'}, {'id': 'D011245', 'term': 'Pregnadienes'}, {'id': 'D011278', 'term': 'Pregnanes'}, {'id': 'D013256', 'term': 'Steroids'}, {'id': 'D000072473', 'term': 'Fused-Ring Compounds'}, {'id': 'D011083', 'term': 'Polycyclic Compounds'}]}}, 'protocolSection': {'designModule': {'phases': ['PHASE2'], 'studyType': 'INTERVENTIONAL', 'designInfo': {'allocation': 'NA', 'maskingInfo': {'masking': 'NONE'}, 'primaryPurpose': 'TREATMENT', 'interventionModel': 'SINGLE_GROUP', 'interventionModelDescription': "* Initial Intervention (Day 0-40):\n\n * Day 0: Testosterone and PSA measurement.\n * Abiraterone acetate 250 mg PO with lunch.\n * Prednisone 5-10 mg/day (either 5 mg/day or 5 mg every 12 h, at investigator's discretion).\n * No ADT until completion of Day 30 evaluation.\n* After Day 30:\n\n * If the patient achieves castration (primary endpoint met) or not, continue standard indicated treatment (add ADT from Day 31, continue AAP as planned, ± docetaxel/AAP)."}, 'enrollmentInfo': {'type': 'ESTIMATED', 'count': 60}}, 'statusModule': {'overallStatus': 'RECRUITING', 'startDateStruct': {'date': '2025-12-01', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2025-12', 'completionDateStruct': {'date': '2027-03-30', 'type': 'ESTIMATED'}, 'lastUpdateSubmitDate': '2025-12-09', 'studyFirstSubmitDate': '2025-12-09', 'studyFirstSubmitQcDate': '2025-12-09', 'lastUpdatePostDateStruct': {'date': '2025-12-23', 'type': 'ESTIMATED'}, 'studyFirstPostDateStruct': {'date': '2025-12-23', 'type': 'ESTIMATED'}, 'primaryCompletionDateStruct': {'date': '2026-12-31', 'type': 'ESTIMATED'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Response rate', 'timeFrame': '3 months', 'description': 'Response per PCWG3'}]}, 'oversightModule': {'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['prostate cancer', 'castration', 'abiraterone', 'hormonal intensification'], 'conditions': ['Prostate Cancer (Diagnosis)']}, 'descriptionModule': {'briefSummary': 'Hypothesis\n\nThe use of Abiraterone 250 mg with food + prednisone, without LHRH analogs or blockers (ADT), achieves castration-level testosterone at 30 days in ≥80-90% of cases.', 'detailedDescription': 'Design\n\n* Type: Phase 2, prospective, open-label, multicenter, single-cohort.\n* Inclusion Criteria:\n\n * Patients with standard indication for intensification:\n\n * M0 high/very high risk candidates for RT (Abiraterone \\[ABI\\] for 2 years + ADT for 3 years per STAMPEDE), or\n * mHSPC: candidates for doublet (ADT+ABI) or triplet (ADT+Docetaxel+ABI); without ADT during the first 30 days.\n\nObjectives and Endpoints\n\nPrimary:\n\n1. Proportion of patients with serum testosterone ≤50 ng/dL (and sensitivity analysis ≤20 ng/dL) at Day 30 (±3) without receiving ADT.\n2. Time to castration (first day with T ≤50 ng/dL within D1-D30).\n\nSecondary:\n\n* Absolute and % change in PSA between D0 and D30; PSA50 and PSA90 rates at D30.\n* Safety (CTCAE v5.0): hypertension, hypokalemia, hepatotoxicity, fluid retention, adrenal insufficiency.\n\nProcedures and Timeline\n\n* Screening (≤7 days): consent, medical history, ECOG, BP, ECG, labs: CBC, liver profile, creatinine, K+, PSA, testosterone.\n* Day 0: start ABI 250 mg + prednisone 5-10 mg/day; education on "with food" administration.\n* Day 30 (±3): AE, BP, K+, LFT, T, PSA → endpoint evaluation.\n* Safety follow-up: until Day 60.\n\nEthical and Regulatory Considerations\n\n* In Argentina and Bolivia, time to access intensified treatment with Abiraterone (doublet or triplet) exceeds two months in the public system, so waiting time is not altered and patients may benefit from early intensified castration if trial is positive.\n* The 250 mg "with food" regimen has pharmacokinetic/economic support in literature; detailed in consent. Multiple studies confirm ABI 250 mg with food equals 1000 mg, and NCCN guidelines recommend this dosing in low-access settings. The SPARE study evaluated safety of ABI without ADT in metastatic castration-resistant prostate cancer, showing equivalence.\n* The 30-day window without LHRH is limited, and all patients will receive standard treatment.\n\nRescue and Safety Criteria • Key AE management:\n\n* Hypokalemia: supplement; consider eplerenone (preferred over spironolactone for lower androgenic interaction); adjust steroid.\n* Hypertension: optimize antihypertensives.\n* Hepatotoxicity: pauses/adjustments per AAP guidelines.\n\nSample Size and Justification\n\n* One-sample binomial test to reject p≤0.70 (unacceptable null) in favor of p≥0.90 (target).\n* With n=24 per cohort and success defined as ≥20/24 patients achieving castration at D30:\n\n * α (one-sided) ≈ 0.042 if true p=0.70.\n * Power ≈ 0.91 if true p=0.90.\n\nVariables and Analysis\n\n* Primary: proportion with T ≤50 ng/dL at D30 (main analysis) and T ≤20 ng/dL (sensitivity).\n\n o Estimate 95% CI and one-sided binomial test vs 70%. Cohort success if ≥20/24 meet criteria.\n* Secondary:\n\n * PSA: absolute and % change, PSA50/PSA90 rates at D30.\n * Safety: AE rates (CTCAE v5.0).\n\nQuality and Logistics\n\n* Testosterone measurement (validated method; preferably LC-MS/MS) to avoid variability.\n* Written instructions for administration with food (same time, similar meal).\n* Home BP and AE recording (card/app).'}, 'eligibilityModule': {'sex': 'MALE', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '18 Years', 'genderBased': True, 'genderDescription': 'male', 'healthyVolunteers': False, 'eligibilityCriteria': 'Inclusion Criteria:\n\n* Age ≥18 years.\n* Histologically confirmed prostate adenocarcinoma.\n* Treated at Hospital Durand (Argentina) or Instituto Oncológico del Oriente Boliviano (Bolivia).\n* Indicated for hormonal intensification (high/very high risk candidates for RT, or mHSPC for doublet/triplet).\n* No prior ADT.\n* ECOG 0-2; adequate hepatic/renal function; K+ ≥3.5 mmol/L; controlled BP.\n\nExclusion Criteria:\n\n* Hypersensitivity to ABI/prednisone; moderate-severe hepatic impairment; uncontrolled hypertension; refractory hypokalemia.\n* Concurrent therapy with strongly contraindicated/inducing drugs affecting ABI levels without possibility of adjustment.'}, 'identificationModule': {'nctId': 'NCT07299292', 'briefTitle': 'Castration With Abiraterone 250 mg Without LHRH Analogs or Blockers in Patients With Prostate Cancer Requiring Hormonal Intensification (Multicenter Phase 2)', 'organization': {'class': 'OTHER', 'fullName': 'SMED Clinical Research'}, 'officialTitle': 'Castration With Abiraterone 250 mg Without LHRH Analogs or Blockers in Patients With Prostate Cancer Requiring Hormonal Intensification (Multicenter Phase 2)', 'orgStudyIdInfo': {'id': 'TN-2025-0003'}}, 'armsInterventionsModule': {'armGroups': [{'type': 'EXPERIMENTAL', 'label': 'single-cohort', 'description': 'Abiraterone 250 mg with food + prednisone, without LHRH analogs or blockers (ADT), achieves castration-level testosterone at 30 days in ≥80-90% of cases.', 'interventionNames': ['Drug: Abiraterone 250 mg with food + prednisone']}], 'interventions': [{'name': 'Abiraterone 250 mg with food + prednisone', 'type': 'DRUG', 'description': 'Abiraterone 250 mg with food + prednisone, without LHRH analogs or blockers (ADT), achieves castration-level testosterone at 30 days in ≥80-90% of cases', 'armGroupLabels': ['single-cohort']}]}, 'contactsLocationsModule': {'locations': [{'zip': '5044', 'city': 'Buenos Aires', 'status': 'RECRUITING', 'country': 'Argentina', 'contacts': [{'name': 'Diego Barreiro, MD', 'role': 'CONTACT', 'email': 'diegomartinbarreiro@hotmail.com', 'phone': '+5491149940794'}], 'facility': 'Hospital Carlos A Durand', 'geoPoint': {'lat': -34.61315, 'lon': -58.37723}}, {'city': 'Hermosillo', 'status': 'NOT_YET_RECRUITING', 'country': 'Spain', 'contacts': [{'name': 'Danny Mena, MD', 'role': 'CONTACT', 'email': 'dmena@theranuks.com', 'phone': '+527291081110'}, {'role': 'CONTACT', 'email': 'dmena@theranuks.com'}], 'facility': 'Hospital San José', 'geoPoint': {'lat': 40.3349, 'lon': -5.47372}}, {'zip': '10260', 'city': 'Santa Cruz de la Sierra', 'status': 'RECRUITING', 'country': 'Spain', 'contacts': [{'name': 'Lucía Ritcher Lucia Ritcher, MD', 'role': 'CONTACT', 'email': 'smeclinicalresearch@gmail.com', 'phone': '+5491149940783'}, {'name': 'Lucia Ritcher', 'role': 'PRINCIPAL_INVESTIGATOR'}], 'facility': 'Instituto Oriente Boliviano', 'geoPoint': {'lat': 39.33635, 'lon': -5.84561}}]}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'SMED Clinical Research', 'class': 'OTHER'}, 'responsibleParty': {'type': 'SPONSOR'}}}}