EValuation of radIOLigand Treatment in mEn With Metastatic Castration-resistant Prostate Cancer With [161Tb]Tb-PSMA-I&T

Официальное название

EValuation of radIOLigand Treatment in mEn With Metastatic Castration-resistant Prostate Cancer With [161Tb]Tb-PSMA-I&T: Phase I/II Study

Обзор

This clinical trial will evaluate the safety and efficacy of \[161Tb\]Tb -PSMA-I\&T in men with metastatic castration-resistant prostate cancer (mCRPC).

Подробное описание

This prospective, single-centre, single-arm phase I/II trial will assess the safety, efficacy and anti-tumour activity of \[161Tb\]Tb-PSMA-I\&T in patients with mCRPC.

This study aims to assess and establish the maximum tolerated dose (MTD), dose-limiting toxicities (DLTs) and recommended phase 2 dose (RP2D) of \[161Tb\]Tb-PSMA-I\&T in patients with mCRPC.

42 men with mCRPC who have progressed with at least one line of taxane chemotherapy and at least one second-generation androgen receptor (AR)-targeted agent will be enrolled in this trial in two stages: dose escalation and a dose expansion phase over a period of 24 months.

Вмешательства

• Препарат [ 161 Tb]Tb PSMA I&T
  During dose escalation, doses of \[161 Tb\]Tb PSMA I\&T will range between 4.4 GBq to 9.5 GBq. The recommended phase 2 dose of \[161 Tb\]Tb PSMA I\&T will be used during dose expansion. \[161Tb\]Tb-PSMA-I\&T dose will be reduced by 0.4 GBq for each subsequent cycles (2 to 6).

Первичные конечные точки

• Maximum Tolerated dose (MTD) [Срок оценки: Dose escalation phase is expected to be completed 6 months from the time the first patient is recruited.]
• Adverse Events (AEs) and Serious Adverse Events (SAEs) measured using National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v5.0 [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment]
• Dose Limiting toxicities (DLTs) [Срок оценки: Dose escalation phase is expected to be completed 6 months from the time the first patient is recruited.]
• Recommended Phase 2 Dose (RP2D) [Срок оценки: Up to 30 months from the time the first patient is recruited.]

Вторичные конечные точки (9)

• Absorbed radiation dose [Срок оценки: On Day 4 of Cycle 1 (each Cycle is 42 days)]
• 50% Prostate-Specific Antigen Response Rate (PSA-RR) [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment or until PSA progression]
• Radiographic Progression-Free Survival (rPFS) [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment]
• PSA progression free survival (PSA-PFS) [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment or until PSA progression]
• Progression free survival (PFS) [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment or until PSA progression]
• Overall survival (OS) [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment]
• Objective response rate (ORR) by Response Evaluation Criteria in Solid Tumours version 1.1 (RECIST1.1) in patients with measurable disease [Срок оценки: Through study completion, up until 12 months after the last patient commences treatment]
• Describe worst pain within 24 hours of Brief Pain Inventory-Short Form (BPI-SF) completion [Срок оценки: Pain will be assessed at baseline, then at 6, 12, 24, 36 and 48 weeks]
• Health-related quality of life (HR-QoL) [Срок оценки: Through completion of 12 months after treatment commencement of last patient]

Критерии участия

Критерии включения

• Patient has provided written informed consent.
• Male patients must be 18 years of age or older at the time of written informed consent.
• Histologically or cytologically confirmed adenocarcinoma of the prostate, OR unequivocal diagnosis of metastatic prostate cancer (i.e., involving bone or pelvic lymph nodes or para-aortic lymph nodes) with an elevated serum prostate specific antigen (PSA).
• Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2.
• Patients must have had prior treatment with at least one line of taxane chemotherapy, unless medically unsuitable.
• Patients must have had prior treatment with at least one second-generation androgen receptor (AR)-targeted agent (e.g., enzalutamide, abiraterone, apalutamide or darolutamide).
• Patients must have progressive disease defined according to The Prostate Cancer Clinical Trials Working Group 3 (PCWG3) as any one of the following:

• PSA progression - minimum of 2 rising PSA values from a baseline measurement with an interval of ≥ 1 week between each measurement
• Soft tissue progression as per Response Evaluation Criteria in Solid Tumours version 1.1 (RECIST 1.1) criteria
• Bone progression: ≥ 2 new lesions on bone scan
• Prior surgical orchiectomy or chemical castration maintained on luteinizing hormone-releasing hormone (LHRH) analogue (agonist or antagonist).
• Serum testosterone levels ≤ 1.75nmol/L (≤ 50ng/dL).
• Significant prostate specific membrane antigen (PSMA) avidity on PSMA positron emission tomography (PET)/computed tomography (CT), defined as a minimum uptake of maximum standardised uptake value (SUVmax) 20 at a site of disease, and SUVmax > 10 at sites of measurable soft tissue disease ≥ 15mm (unless subject to factors explaining a lower uptake, e.g. respiratory motion, reconstruction artefact).
• Patients must have a life expectancy ≥ 6 months.
• Patients must have adequate bone marrow, hepatic and renal function, defined as:

• Haemoglobin ≥ 100g/L independent of transfusions (no red blood cell transfusion in last 4 weeks)
• Absolute neutrophil count (ANC) ≥ 1.5 x 10\^9/L
• Platelets ≥ 150 x 10\^9/L
• Total bilirubin ≤ 1.5x upper limit of normal (ULN) except for patients with known Gilbert's syndrome, where this applies for the unconjugated bilirubin component
• Aspartate transaminase (AST) and alanine transaminase (ALT) ≤ 3x ULN if there is no evidence of liver metastasis or ≤ 5x ULN in the presence of liver metastases
• Adequate renal function: patients must have a creatinine clearance estimated of ≥ 40mL/min using the Cockcroft Gault equation (Appendix 3)
• Sexually active patients are willing to use medically acceptable forms of barrier contraception.
• Willing and able to comply with all study requirements, including all treatments and the timing and nature of all required assessments.
• At least 3 weeks since the completion of surgery or radiotherapy prior to registration.

Критерии исключения

• Prior treatment with another radioisotope (i.e. PSMA radioligands, radium-223, strontium-89, samarium-153).
• Site(s) of discordant disease on PET imaging (Fluorodeoxyglucose \[FDG\]-positive and minimal PSMA-uptake).
• Other malignancies (in addition to the prostate cancer being treated on this study) within the previous 2-years prior to registration other than basal cell or squamous cell carcinomas of skin or other cancers that are unlikely to recur within 24 months.
• Symptomatic brain metastases or leptomeningeal metastases.
• Patients with symptomatic or impending cord compression unless appropriately treated beforehand and clinically stable for more than 4 weeks.
• Concurrent illness, including severe infection that may jeopardize the ability of the patient to undergo the procedures outlined in this protocol with reasonable safety.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Не применимо

Модель

Одна группа

Маскирование

Открытое

Основная цель

Лечение

Центры проведения

Австралия · 1 центр

• Peter MacCallum Cancer Centre — Melbourne

Публикации

• Buteau JP, Kostos L, Jackson PA, Xie J, Haskali MB, Alipour R, McIntosh LE, Emmerson B, MacFarlane L, Martin CA, Chan J, Williams SE, Jewell KE, Eifer M, Hamilton AJ, Harris WQ, Akhurst T, Au L, Cardin AJ, Furic L, Kashyap RK, Kong G, Ravi Kumar AS, Murphy DG, Ravi R, Saghebi J, Sandhu S, Tran B, Azad AA, Hofman MS. First-in-human results of terbium-161 [161Tb]Tb-PSMA-I&T dual beta-Auger radioliga PMID 40617237
• Buteau JP, Kostos L, Alipour R, Jackson P, McInstosh L, Emmerson B, Haskali MB, Xie J, Medhurst E, Ravi R, Gonzalez BD, Fettke H, Blyth B, Furic L, Owen K, Sandhu S, Murphy DG, Azad AA, Hofman MS. Clinical Trial Protocol for VIOLET: A Single-Center, Phase I/II Trial Evaluation of Radioligand Treatment in Patients with Metastatic Castration-Resistant Prostate Cancer with [161Tb]Tb-PSMA-I&T. J Nucl PMID 38991752

Идентификаторы

NCT: NCT05521412 · 21/028

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

Открыть это исследование на ClinicalTrials.gov ↗