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Cabazitaxel in mCRPC Patients With AR-V7 Positive Circulating Tumor Cells (CTCs)
Cabazitaxel in mCRPC Patients With AR-V7 Positive Circulating Tumor Cells (CTCs)

NCT03050866

UnknownPhase 2

Sponsor: Erasmus Medical Center

Conditions: Circulating Tumor Cell, Metastatic Prostate Cancer

Interventions: Cabazitaxel, Antihistamine, Corticosteroid, H2 antagonist, Antiemetic

Countries: Netherlands

After failure on docetaxel, which has been the standard first line therapy for patients with metastatic castration-resistant prostate cancer (mCRPC), several treatment options are currently available. In retrospective studies, resistance has been described to two of the treatment options, enzalutamide and abiraterone, when a splice variant of the Androgen Receptor (AR-V7) is present on circulating tumor cells (CTCs). The investigators hypothesize that patients with AR-V7 positive CTCs do have a meaningful response to cabazitaxel.

Eligibility overview

Sex: MALE

Age: 18 Years to

Healthy volunteers: No

Study type: INTERVENTIONAL

Eligibility criteria
Inclusion Criteria:

* Histologically or cytologically confirmed adenocarcinoma of the prostate without neuroendocrine differentiation or small cell features.
* Continued androgen deprivation therapy either by luteinizing hormone-releasing hormone (LHRH) agonists/antagonists or orchiectomy.
* Serum testosterone \<50 ng/mL (1.7 nmol/L) within 21 days before prescreening.
* Age ≥18 years
* Received prior docetaxel, and experienced disease progression during or after treatment with docetaxel.
* Eastern Cooperative Oncology Group (ECOG) performance status 0-2 (appendix A)
* Written informed consent according to ICH-GCP (International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use - Good Clinical Practice) before study treatment and any study specific procedures

Exclusion Criteria:

* Geographical, psychological or other non-medical conditions interfering with follow-up
* Uncontrolled severe illness or medical condition (including uncontrolled diabetes mellitus or active systemic or local bacterial, viral, fungal - or yeast infection)
* Symptomatic central nervous system (CNS) metastases or history of psychiatric disorder that would prohibit the understanding and giving of informed consent.
* Chemotherapy or immunotherapy (other than LHRH analogues) within the last 4 weeks before study inclusion.
* Prior treatment with cabazitaxel
* Treatment with both abiraterone and enzalutamide in the post-docetaxel setting
* Radiotherapy to 40% or more of the bone marrow
* Known hypersensitivity to corticosteroids
* History of severe hypersensitivity reaction (≥grade 3) to docetaxel
* History of severe hypersensitivity reaction (≥grade 3) to polysorbate 80 containing drugs
* Concurrent or planned treatment with strong inhibitors or strong inducers of cytochrome P450 3A4/5 (a one week wash-out period is necessary for patients who are already on these treatments)
* Concomitant vaccination with yellow fever vaccine
* Abnormal liver functions
* Abnormal hematological blood counts
Locations (9)
  • Delft, Netherlands
  • Flushing, Netherlands
  • Gouda, Netherlands
  • Nijmegen, Netherlands
  • Rotterdam, Netherlands
  • Rotterdam, Netherlands
  • Rotterdam, Netherlands
  • The Hague, Netherlands
  • Tilburg, Netherlands