About this trial
This trial will evaluate treatment for patients with solid tumors with active brain metastases. Patients will be treated with a theranostic or diagnostic agent. Theranostic agents are targeted radioactive drugs used to identify (diagnose) and to deliver therapy. The main purpose of the study is to analyze the efficacy (to find out how effective a treatment is) of each of the theranostic agents in patients who have solid tumors with active brain metastases. In the diagnostic phase, the main objective is to determine the proportion of patients showing target expression in the brain lesion after a single dose of diagnostic agent. In the therapeutic phase, the theranostic agent's efficacy will be determined by assessing the response rate in the brain, defined as intracranial response rate at 24 weeks.
Eligibility criteria
Qualifiers
Patient, or legal representative (if applicable), must be capable to understand the purpose of the study and have signed written Informed Consent Form (ICF) prior to beginning specific protocol procedures.
Male or female patients ≥ 18 years of age at the time of signing ICF.
Radiologically documented locally advanced unresectable or metastatic breast cancer (BC).
Histologically confirmed HER2-positive (HER2[+]) breast cancer based on local testing on the most recent analyzed biopsy according to the most recent American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines.
Disqualifiers
Participation in another clinical trial, interventional or observational, until the Study's safety visit (participation in retrospective studies or data analysis is allowed).
Treatment with approved or investigational cancer therapy within 14 days prior to initiation of study drug.
Known history of invasive malignancy and other than the malignancy of interest within 5 years prior to signing informed consent except for adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer. For other cancers considered to have a low risk of recurrence, discussion with the Sponsor's Medical Monitor is required.
Known allergy or hypersensitivity reaction to any investigational medicinal products (diagnostic radioligand) or their incorporated substances.
Trial design
Treatments tested in this trial
- Radiotracer targeting somatostatin receptor 2 (SSTR2) ([68Ga]Ga-DOTA-TOC)