Biotech Strategy Blog

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

Posts tagged ‘immune resistance’

One of the most important challenges in cancer immunotherapy is overcoming immune resistance. For example, even with the high response rates seen in acute lymphoblastic leukemia (ALL) with CAR – T cell therapy, a significant number of patients relapse after an initial response.

Chinatown Honolulu

Chinatown, Honolulu 2016

Could immune resistance be reversed or prevented by the addition of appropriate checkpoint blockade? Which ones matter though, that is the critical question?  Rather than randomly picking ones to try, we need scientific evidence regarding these choices.

This post explores some of the latest data presented at the BMT Tandem meeting on the role of T cell immunoglobulin mucin–3 (TIM–3) and PD–1 upregulation in causing resistance.

If you’re not already a sub and want to read our coverage of ASH, BMT Tandem and the forthcoming AACR 2016 annual meeting, you can purchase individual access below. This week only – inspired by the story of Eddie Aikau in Hawaii – we have a special offer that we’ve never done before (and may never do again) of $75 off a quarterly subscription. The deal ends tomorrow Friday March 4th at 12 noon HST. Check it out!

Subscribers can login to read more about the latest data on how alternative checkpoint inhibitors may have a role to play in cancer treatment.  Welcome to the new folks who signed up this week, good to see y’all!

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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