Brief Summary
The purpose of this phase Ib/II study is to (a) in Phase Ib evaluate the safety, tolerability, and pharmacokinetics (PK) of AMO959 when given in combination with lutetium (177Lu) vipivotide tetraxetan (also known as [177Lu]Lu-PSMA-617 or 177Lu-PSMA-617 and hereafter referred to as AAA617) with an androgen receptor pathway inhibitor (ARPI) in participants with metastatic castration resistant prostatea walnut-shaped gland in the male reproductive system that is responsible for producing semen - a bodily fluid that acts as a vessel for sperm transport during ejaculation cancera disease where abnormal cells split without control and spread to other nearby body tissue and/or organs (mCRPC) who have failed one prior ARPI and with or without prior taxane exposure, and (b) in Phase II evaluate the preliminary efficacy of AMO959 in combination with AAA617 and ARPI in participants with mCRPC who have failed one prior ARPI, but who have not yet been exposed to taxane treatment.
Intervention / Treatment
- Drug: AMO959
- Radiation: AAA617
- Drug: Enzalutamide
- Drug: Abiraterone
Inclusion Criteria
- Signed informed consenta process in which a patient receives detailed information about a procedure or treatment, including its potential risks, benefits, and alternatives. The patient then has the opportunity to understand the information and voluntarily agree to the procedure or treatment. must be obtained prior to participation in the study.
- Participants must be adults ≥ 18 years of age.
- Participants must have an ECOG performance status of 0 to 2.
- Participants must have histologically confirmed adenocarcinomacancer arising from mucus-producing glands in organs of the prostate. Participants with other histology (e.g. neuroendocrine, intraductal subtype) are not eligible.
- Phase Ib: Prior exposure of up to 1 line of taxane-based chemotherapya cancer treatment that uses drugs to kill or slow the growth of cancer cells, while minimising damage to healthy cells is permissible. Phase II: Participants must not have received taxane-based chemotherapy in mCRPC setting (allowed in mHSPC setting).
- Participants must have PSMA-PET positive disease assessed by using a PSMA imagingtests that create detailed images of areas inside the body agent that is approved as per protocol and are eligible as determined by the sponsor’s central reading rules.
- Castration level of testosterone (< 50 ng/dL), and/or use of concomitant ADT
- Participant must have been diagnosed with mCRPC with documented progressive disease while on treatment with ARPI in mHSPC or earlier setting as their last treatment (and did not progress on more than one ARPI), based on at least 1 of the following criteria:
- Serum/plasma PSA progression is defined as 2 increases in PSA measured at least 1 week apart. The minimal start value is 2.0 ng/mL; 1.0 ng/mL is the minimal starting value if confirmed rise in PSA is the only indication of progression as per PCWG3 guidelines.
- Soft-tissue progression defined PCWG3-modified RECIST v1.1 (Eisenhauer et al 2009, Scher et al 2016).
- Progression of bone disease: 2 new lesions; only positivity on the bone scana type of medical imaging that uses a radioactive tracer to detect bone conditions or abnormalities defines metastatic disease to bone (PCWG3 criteria Scher et al 2016).