It’s Day 7 of our 12 day Countdown to AACR 2016 in New Orleans. After exploring GITR and OX40, we’re now looking at another stimulatory target for cancer immunotherapy: CD40.
We’ve been writing about CD40 as a cancer immunotherapy target for some time. See posts: “CD40 as a Cancer Immunotherapy Target” and “Targeting CD40 in Cancer Immunotherapy.”
Anti-CD40 antibodies are agonists that act on stimulatory signalling receptors on T cells and antigen presenting cells (APCs). Targeting CD40 effectively acts to “put the foot on the gas” and may help generate a better immune response. This could be important in cancers that have fewer natural T cells present.
CD40 is an attractive target because it’s expressed in more than 50% of carcinomas and melanomas and almost all hematological B cell malignancies. Of particular interest is the potential to combine a CD40 agonist with a PD-1/PD-L1 checkpoint inhibitor.
Multiple companies have CD40 agonists in clinical development including Roche, Apexigen, Alligator Biosciences and Seattle Genetics. There are others coming too.
In this preview of AACR 2016, we’re looking at the CD40 landscape. New products and companies have entered the scene, so we’re highlighting them and some of the CD40 presentations to look out for at AACR 2016 (and why they matter).
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There are now several CD40 agonist antibodies in early clinical development from several different companies, including:
- Roche – RO7009789
- Apexigen – APX005M
- Seattle Genetics – SEA-CD40
- Alligator Bioscience – ADC–1013
This post is the last in our cancer immunotherapy coverage from the European Cancer Congress in Vienna. It features excerpts from an interview with Dr Christian Rommel, head of oncology discovery at Roche in Basle, Switzerland in which he talks about the development of their CD40 monoclonal antibody. Readers may recall we wrote about this from SITC 2014 last year: “Targeting CD40 in Cancer Immunotherapy.”
This post is also a new primer on CD40 as we start our coverage of the Society for Immunotherapy of Cancer (SITC) 2015 annual meeting. We’re informed by SITC it’s a sell out conference with 600 more people than last year’s record breaking number. Cancer Immunotherapy is indeed the hottest topic in cancer drug development.
If you have plans to be at National Harbor this week, we hope to see you there!
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We know from preclinical research that immunosuppressive tumour microenvironments can restrain anti-tumour immunity, thereby making subsequent therapeutic interventions less effective than expected. CD40 activation has been shown to reverse immune suppression and drive antitumor T cell responses, which in turn could lead to potentially better outcomes.
What happens when patients with advanced melanoma are given a checkpoint inhibitor plus an immune agonist such as anti-CD40?
Can we help the non-responding patients to checkpoint blockade improve their outcomes and shift the long tail in survival curves up using this approach?
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