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Phase II crinical trial of panitumumab rechallenge with KRAS wild-type unresectable/recurrent colorectal cancer.

ABSTRACT: Interventions: This is a multicentric phase II trial that examines patients who had a clinical benefit [confirmed stable disease (SD) for at least 6 months or clinical response] after a line of panitumumab-plus FOLFOX/FOLFIRI therapy and then a progression of disease, during panitumumab -based therapy, for which underwent a new line chemotherapy and finally, after a clear new progression of disease, were retreated with the same or another panitumumab based chemotherapy. Primary outcome(s): Response rate(RR) Study Design: Single arm Non-randomized

DISEASE(S): Colorectal Cancer

PROVIDER: 2626331 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Endometrial cancer is the most commonly diagnosed gynecologic malignancy in women after breast, lung and colorectal cancer. Despite numerous scientific advances, the incidence and mortality rate of endometrial cancer is on the rise. Considerable research effort has therefore been placed on understanding the pathogenesis of this disease to combat this growing issue. There is now emerging evidence to suggest a putative role for dysregulation of the renin angiotensin system (RAS) and in particular the (pro)renin receptor ((P)RR), in the ontogenesis of endometrial cancer. Support for this notion arises from previous literature implicating (P)RR in cancer pathophysiology (e.g., breast cancer and pancreatic carcinoma) by virtue of its role in proliferation, angiogenesis, fibrosis, migration and invasion. In view of these data, we aimed to investigate the functional role of (P)RR in human endometrial cancer progression and development. To this end, we employed an siRNA-mediated knock down approach to abrogate (P)RR expression in the immortalized endometrial epithelial cell lines; Ishikawa, AN3CA and HEC-1A to explore the role of (P)RR in cellular proliferation and cellular viability. To further extend these analyses we also carried out a sophisticated proteomic screen, that investigated the potential pathways via which (P)RR is acting in endometrial cancer physiology. These data confirmed that (P)RR is critical for endometrial cell cancer development, contributing to both its proliferative capacity and in the maintenance cell viability. This is likely mediated through proteins such as MGA, SLC4A7, SLC7A11 or DHRS2, which were reduced following (P)RR knockdown. These putative protein interactions/pathways, which rely on the presence of (P)RR, are likely to contribute to endometrial cancer progression and could therefore, represent several novel therapeutic targets in the treatment of this cancer. Finally we contend that (P)RR, in its soluble form (s(P)RR) in blood, may have substantial potential as a novel biomarker for cancer diagnosis and prognosis prediction going forward.

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Phase II crinical trial of panitumumab rechallenge with KRAS wild-type unresectable/recurrent colorectal cancer.

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