PD-1/PD-L1 Inhibitors - Ronny Allan - Living with Neuroendocrine Cancer

Tag: PD-1/PD-L1 Inhibitors

A protein found on T cells (a type of immune cell) that helps keep the body’s immune responses in check. When PD-1 is bound to another protein called PD-L1, it helps keep T cells from killing other cells, including cancer cells.

Some anticancer drugs, called immune checkpoint inhibitors, are used to block PD-1 (inhibited). When this protein is blocked, the “brakes” on the immune system are released and the ability of T cells to kill cancer cells is increased.

20Jul 2022 by Ronny Allan No Comments

Assessment of Clinical Response Following Atezolizumab and Bevacizumab Treatment in Patients With Neuroendocrine Tumors: A Nonrandomized Clinical Trial

Clinical Trials and Research

BackgroundWell differentiated NETs have been described as an "immunological desert" in recent years mainly due to the poor response rate data coming out of clinical trials of immunotherapy drugs. Poorly differentiated NEC has favoured better but mainly in the more obscure types. Which is why these data of a combo treatment containing one immunotherapy drug caught my eye. What is atezolizumab? It is a type of monoclonal antibody and a type of immune checkpoint inhibitor. It's a Programmed cell death protein -1 (PD-1)/ Ligand 1 (PD-L1) inhibitor. A drug that binds to the protein PD-L1 to help immune cells kill cancer cells better and is used to treat many different types of cancer, including cancers that express PD-L1. Atezolizumab is used alone or with other drugs to treat certain types of…

08Jun 2022 by Ronny Allan No Comments

Clinical Trial: Dostarlimab, anti–PD-1 monoclonal antibody in Neuroendocrine Carcinoma

Clinical Trials and Research, Treatment

BackgroundFollowing the Americal Society of Clinical Oncology (ASCO) conference in June 2022 (ASCO is the biggest Oncology event in the world), the media widely featured the results of the Phase 2 clinical trial of the drug Dostarlimab, an anti–PD-1 monoclonal antibody. The media often looks for headline-grabbing stories and this was one of them. One UK TV outlet said they may have found the cure for cancer, which is a reckless statement when you look at the size and boundary of the clinical trial referenced. The detail is, that this was a phase 2 trial for "rectal adenocarcinoma", but specifically locally advanced mismatch repair-deficient (dMMR) rectal cancer, allowing them to avoid surgery, chemotherapy, and radiation, at least for the time being. Nonetheless, the complete response in all 12 was clinically…

17Jun 2017 by Ronny Allan 8 Comments

Immunotherapy: Studies with Neuroendocrine Neoplasms

Clinical Trials and Research, Treatment

IntroductionThere's a lot of Immunotherapy stuff out there! However, I also wanted to break it down and perhaps see if I can pick up the what, when, why, where and how in regard to Neuroendocrine Cancer. It's difficult, not least because the picture is not clear and there is no general roadmap printed, let alone one for Neuroendocrine disease. Immunotherapy for NETs was discussed at ENETS 2017 in Barcelona. The presentation that sticks out was one given by Dr Matthew Kulke, a well-known NET Specialist in Boston. My reaction to the presentation was one of 'expectation management' and caution i.e. it's too soon to know if we will get any success and when we will get it. He also hinted that it's more likely that any success will first be…