CyPep-1 Injections in Cancer Inducing Lymphocyte Infiltrate Accumulations (CICILIA)

  • End date
    Dec 20, 2023
  • participants needed
  • sponsor
    Cytovation AS
Updated on 7 October 2022


This Phase I/IIa trial is designed to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of CyPep-1 when administered directly into malignant tumors in monotherapy and in combination with anti-PD-1 antibody pembrolizumab. Additionally, the trial will monitor anti-tumor effects on both injected lesions and distant non-injected deposits.


Treatment with immune modulating agents may result in long lasting anti-tumor responses in patients with cancer. However, only a subset of patients obtains durable remission. Treatment strategies that aim at recruiting tumor antagonizing cellular components of the immune system holds great promise. CyPep-1 is a chemically synthesized peptide with oncolytic properties. It selectively targets cancer cells based on their altered molecular composition, and removes the surrounding cell membrane. This releases tumor neoantigens to the microenvironment and potentially induces an anti-tumour immune response.

Preclinical studies showing that CyPep-1 can synergize with anti-PD-1 antibody treatment in terms of decreased tumor volumes and prolonged survival highlight the possible clinical utility of CyPep-1 in the combination setting with ICIs.

This is a phase I/IIa, open label trial, with a dose escalation phase to evaluate the safety and tolerability of CyPep-1 as monotherapy and in combination with pembrolizumab, to identify the recommended phase 2 dose, followed by a dose expansion phase in subjects with advanced solid tumors. The trial consists of two phases and multiple arms.

Secondary objectives are preliminary anti-tumor efficacy and to assess the pharmacokinetics (PK) of CyPep-1 as monotherapy and in combination with pembrolizumab. As part of the exploratory analysis, it is planned to determine local and systemic immunological effects after CyPep-1 administration, alone and in combination with pembrolizumab.

Condition Advanced Solid Tumor Malignancy
Treatment CyPep-1, Pembrolizumab 25 MG/ML [Keytruda], Pembrolizumab 25 MG/ML
Clinical Study IdentifierNCT04260529
SponsorCytovation AS
Last Modified on7 October 2022


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