Biotech Strategy Blog

Commentary on Science, Innovation & New Products with a focus on Oncology, Hematology & Cancer Immunotherapy

Posts tagged ‘myeloid cells’

One of the unintended consequences of the rise of cancer immunotherapy has been the fall in interest from patients who might be candidates for entry into clinical trials for other therapies, such as chemotherapy and targeted agents, for example.

St Charles Streetcar New OrleansA number of industry friends have uniformally expressed concern over how difficult it has been enroll such trials and bemoaned the broader – and often not anticipated – effect to the extent that some trials have even been terminated.

This situation often occurs, not because of lack of efficacy or severe side effects, but simply a lack of enthusiasm and low accrual rates. Quite a few patients consider chemo to be nothing short of ‘poison’ and don’t want anything to do with it as a result, unless it can be avoided.

Here’s my advice to those in this situation – stop moaning, start re-thinking, and re-positioning your agent in a different light to the investigators who enroll these studies. If they lack heart, in a highly competitive world, you have to stand out and thus, everything flows from the basic rationale of what you’re trying to accomplish.

What exactly do we mean by that?

Yesterday, we discussed one of the rate limiting steps in the cancer immunity cycle – getting more T cells into the tumours so that that subsequent immunotherapy can be even more effective.

One way to do that?


At AACR recently, we came across some intriguing ideas and approaches that are being discussed and explored, which may open many people’s eyes and minds. It rapidly became clear during discussions with several experts that all is not what it seems, and smart companies are already taking advantage of the new science that is emerging as well as a deeper understanding of the underlying biology of how the immune system behaves in cancer patients.

Here, we offer insights from our latest interview with a thought leader in the field for his perspective on how we can improve response rates and outcomes with cancer immunotherapy.

Fair warning: I must confess that it opened my own mind to fresh ideas and different approaches in an unexpected way – you may experience the same sentiments.

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One interesting aspect of the recent American Society of Clinical Oncology (ASCO) meeting was the surprise many people expressed in conversations that chemotherapy might actually be useful in combination with checkpoint inhibitors.

You see, several years ago when we first started writing about this new class of agents, I remember vividly how quite a few analysts grumbled on social media or sent me snarky personal messages when it was even suggested that this — along with combinations with existing targeted therapies — might be a worthwhile and valid approach to explore. Clearly they believed that immunotherapies (as monotherapy) were going to be the ultimate panacea.

Not so fast…

There are a number of scientific reasons for combination strategies, but not everyone thinks rationally when new approches come along and their attititude is often ‘out with the old, in with the new!’ It was actually quite amusing to see some of the very same folks in Chicago now eulogising the combination of checkpoint blockade with… chemotherapy in lung, colorectal or even bladder cancer.

One reason why these traditional therapies may be important is because they can influence the tumour microenvironment in both positive and negative ways. That can be helpful for deciding on rational future combinations, rather than just throwing mud at the wall and hoping based on a limited set of data.

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