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The Bispecific PSMAxCD3 Antibody CC-1 in Patients with Castration Resistant Prostate Carcinoma
Sponsor: University Hospital Tuebingen
Summary
This trial is a first in human (FIH) study in patients with castration resistant metastatic prostate cancer (CRPC) after failure of third-line therapy aiming to evaluate safety and efficacy of CC-1, a bispecific antibody (bsAb) with PSMAxCD3 specificity developed within DKTK. CC-1 binds to human prostate-specific membrane antigen (PSMA) on prostate cancer cells as well as to tumor vessels of CRPC, thereby allowing for a dual mode of anti-cancer action. CC-1 was developed in a novel format which not only prolongs serum half-life but most importantly reduces off-target T cell activation with expected fewer side effects. Together with preemptive IL-6 receptor (IL-6R) blockade using tocilizumab, this allows for application of effective bsAb doses with expected high anticancer activity. The study comprises two phases. The first phase is a doseescalation phase with concomitant prophylactic application of tocilizumab to evaluate the maximally tolerated dose (MTD) of CC-1. This is followed by a dose-expansion phase (also with prophylactic IL-6R blockade using tocilizumab), as this approach has been shown to be efficient and beneficial for patients. A translational research program comprising, among others, analysis of CC-1 half-life and the induced immune response as well as molecular profiling in liquid biopsies will serve to better define the mode of action of CC-1 and to identify biomarkers for further clinical development.
Official title: First in Human Study to Evaluate the Safety, Tolerability and Preliminary Efficacy of the Bispecific PSMAxCD3 Antibody CC-1 in Patients with Castration Resistant Prostate Carcinoma
Key Details
Gender
MALE
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
86
Start Date
2019-11-15
Completion Date
2025-12-31
Last Updated
2024-12-09
Healthy Volunteers
No
Conditions
Interventions
CC-1, PSMAxCD3
Infusion of CC-1 over 24 hours for 7 days with possible intra-patient dose-escalation
Locations (2)
University Hospital Tuebingen
Tübingen, Baden-Wurttemberg, Germany
University hospital Heidelberg
Heidelberg, BadenWuerttemberg, Germany