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Clinical Trial Summary

TGFβ has profound local immunosuppressive and immunoexclusion effects in the tumor microenvironment that are integrally involved in the failure of immune checkpoint inhibitors in some tumors. Preclinical data in a variety of models strongly support the study of AVID200 in patients with treatment-refractory advanced and metastatic malignancies as an approach to reducing immunosuppression/exclusion and increasing the activity of immune checkpoint inhibitors.


Clinical Trial Description

TGFβ inhibits local anti-tumor immunity in the tumor microenvironment (TME) and also promotes the epithelial to mesenchymal transition (EMT) that enhances the metastatic potential of tumor cells. Cancer-associated fibroblasts (CAFs) are a critical constituent of the TME. As is the case for fibrosis in other settings, these cells are myofibroblast-like, and respond to and are activated by tumor-derived TGFβ. CAFs play a critical role in promoting EMT resulting in increased tumor cell migration and invasion as well as maintaining the TME to support tumor cell survival. The immunosuppressive role of TGFβ in the TME has been clearly demonstrated with the activation of CAFs being an important mechanism underlying immune cell exclusion. Exclusion of immune cells from tumors and local immunosuppression can both be reversed by AVID200 therapy. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03834662
Study type Interventional
Source Formation Biologics
Contact
Status Active, not recruiting
Phase Phase 1
Start date January 7, 2019
Completion date December 30, 2020

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