Anti-tumour Activity of (177Lu) rhPSMA-10.1 Injection

Recruiting now · Phase 1/Phase 2

Conditions studied: Prostate Cancer, Metastatic Castration-resistant Prostate Cancer, mCRPC, Urogenital Neoplasms, Prostatic Neoplasms, Prostatic Diseases

In brief

To determine the dose, safety, radiation dosimetry and efficacy of 177Lu-rhPSMA-10.1 in participants with PSMA-expressing metastatic castrate resistant prostate cancer.

Key facts

Study ID

NCT05413850

Run by

Blue Earth Therapeutics Ltd

People needed

82

Starts

2022-07-20

Expected to finish

2028-03-31

Last updated by the study team

2026-05-14

Who can join

Age: 18 and older. Sex: male. Healthy volunteers: not accepted.

You may qualify if…

• Male subjects, 18 years of age or older with histologically confirmed adenocarcinoma of the prostate.
• Serum testosterone levels <50 ng/dL (1.73 nmol/L) after surgical or continued chemical castration.
• Presence of disease target or non target lesions (per RECIST v1.1) on CT/MRI and/or presence of disease on full body 99mTc bone scan performed within 28 days of screening.
• Positive disease expression of PSMA as confirmed on PSMA PET/CT scan.
• At least 4 weeks or 5 half-lives (whichever is longer) elapsed between last anti-cancer treatment administration and the initiation of study treatment (except for Luteinising Hormone-releasing Hormone or GnRH).
• Resolution of all previous treatment related toxicities to CTCAE version 5.0 grade of ≤1 (except for chemotherapy induced alopecia and grade 2 peripheral neuropathy or grade 2 urinary frequency which are allowed).
• Prior major surgery must be at least 12 weeks prior to study entry.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0-2 with a life expectancy ≥6 months.
• Adequate bone marrow reserve and organ function as demonstrated by blood count, and serum biochemistry at baseline.
• Adequate contraception for patients and their partners.
• For Phase 1 mCRPC only: Subjects who have experienced disease progression on or after at least 1 NAAD (e.g. abiraterone, enzalutamide) and at least 1 course (but no more than 2 courses) of taxane-based chemotherapy. For Phase 2 mCRPC only: Subjects who have experienced disease progression on or after at least 1 NAAD (e.g. abiraterone, enzalutamide, apalutamide, darolutamide), but have not received previous taxane-based chemotherapy for the treatment of mCRPC.

You may not qualify if…

• Known hypersensitivity to the therapeutic or diagnostic IMP or any of its constituents.
• Presence of significant PSMA-negative disease on ceCT/MRI scan
• Diffuse marrow infiltration of disease ('superscan' appearance on full body 99mTc bone scan).
• Symptomatic spinal cord compression, or clinical or radiological findings that are indicative of impending spinal cord compression.
• Known history of haematological malignancy.
• Known history of central nervous system (CNS) metastases.
• Histological findings consistent with neuroendocrine phenotype of prostate cancer.
• Known history of other solid malignancy that may reduce life expectancy and/or may interfere with disease assessment.
• Unresolved urinary tract obstruction defined as radiographic evidence of hydronephrosis with or without ureteric stent/nephrostomy.
• Any uncontrolled significant medical, psychiatric, or surgical condition or laboratory finding that would pose a risk to subject safety or interfere with study participation or interpretation of individual subject results.
• Ongoing treatment with bisphosphonates for bone-targeted therapy.
• Severe urinary incontinence that would preclude safe disposal of radioactive urine.
• Single kidney or renal transplant or any concomitant nephrotoxic therapy that might put the subject at high risk of renal toxicity during the study in the judgement of the investigator.
• Clinically significant abnormalities on a single 12 lead electrocardiogram (ECG) at screening.
• Previously received external beam irradiation to a field that includes more than 30% of the bone marrow or kidneys.
• Previous treatment with any of the following: PSMA targeted radionuclide therapy, Strontium-89, Samarium-153, Rhenium 186, Rhenium-188, Radium-223, hemi-body irradiation.
• Subjects with bilateral hip replacements or any significant metallic implants or objects, that may affect image quality and/or dosimetry calculations.
• Transfusion of blood products for the sole purpose of meeting the eligibility criteria for this clinical study.
• Participation in other studies involving IMP(s) within 28 days or 5 half-lives (whichever is longer) prior to study entry and/or during study participation.
• Any history of clinically significant parenchymal lung disease e.g. interstitial lung disease or bullous emphysema.
• Any history of prior thoracic external beam radiotherapy.
• Presence of abnormal PSMA PET uptake in the lung parenchyma above expected physiological levels, as determined by local assessment.

Where it is running

• University Hospital Southampton NHS Foundation Trust — Southampton, United Kingdom (enrolling)
• NovaCure Health — Miami, Florida, United States (enrolling)
• Emory University Hospital — Atlanta, Georgia, United States (enrolling)
• XCancer Omaha / Urology Cancer Center — Omaha, Nebraska, United States (enrolling)
• Biogenix Molecular LLC — Miami, Florida, United States (enrolling)
• Saint Luc University Hospital — Brussels, Belgium (enrolling)
• University Hospital Ghent — Ghent, Belgium (enrolling)
• University Hospital Leuven — Leuven, Belgium (enrolling)
• University Hospital Aachen — Aachen, Germany (enrolling)
• Universitätsklinikum Augsburg — Augsburg, Germany (enrolling)
• University Hospital Essen — Essen, Germany (enrolling)
• Hospital Rechts der Isar — Munich, Germany (enrolling)
• Radboud UMC — Nijmegen, Gelderland, Netherlands (enrolling)
• Meander Medisch Centrum — Amersfoort, Netherlands (enrolling)
• Bristol Hematology and Oncology Center — Bristol, United Kingdom (enrolling)
• Beatson West of Scotland Cancer Center — Glasgow, United Kingdom (enrolling)
• St Bartholomew's Hospital — London, United Kingdom (enrolling)
• James Cook University Hospital — Middlesbrough, United Kingdom (enrolling)
• Oxford University Hospitals NHS Foundation Trust — Oxford, United Kingdom (enrolling)
• Weston Park — Sheffield, United Kingdom (enrolling)
• Weill Cornell Medicine - New York - Presbyterian Hospital — New York, New York, United States

Full record on ClinicalTrials.gov

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