Biotech Strategy Blog

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

Posts tagged ‘MUC16’

This is an extended update that I’ve been planning to write for some time, however, there was always some shiny new clinical data to highlight and discuss so it sadly stayed on the backburner!

Is the sun rising on CAR-T cell threats from the East?

Over the next few weeks, we will post some meaty reviews on various topics pertinent to cancer research R&D. They might involve a particular tumour type that is seeing extensive developments, an important or difficult target, or even a particular category approach, for example.

In the first of this new mini-series, we take a look at the CAR-T cell therapy niche and highlight some important new developments that are well worth watching out for.

Things are a-changin’ very rapidly here, including numerous R&D threats from the east (China) so it’s a good opportunity to take stock and look forward.

Here we go – hold on to your hats…

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Now that at two CAR T cell therapies have been approved by the FDA in two indications, what does the future hold for new developments in both hematologic malignancies and solid tumours?

It was astonishing to explore the poster halls at AACR last month and see just how many new players and targets are emerging left, right and centre.

Last week we highlighted an up and coming new player on the scene, Mustang Bio, but what about the original pioneers in this niche and what are they up to these days?

To answer this question, we tracked down Dr Renier Brentjens at Memorial Sloan Kettering while in Chicago to learn more about his latest work and where he sees the future of CAR T cell therapy heading. It makes for a very interesting, and at times, surprising read…

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The cherry blossoms are finally blooming in Washington DC for the 2013 annual meeting of the American Association for Cancer Research (AACR).

With AACR in DC this year, the following traditional Japanese haiku published on the National Park Service website struck me as appropriate for cancer researchers and survivors to reflect on:

Yo no naka wa, Mikka minu ma ni, Sakura kana

“Life is short, like the three day glory of the cherry blossoms.”

Yesterday at AACR was predominantly an educational day, but several studies were highlighted to the assembled media.  One of the late-breaking clinical trials that caught my attention was the preliminary phase 1 data on Genentech’s novel new agent DMUC5754A.

Joyce Liu MD MPH. Photo: Dana-Farber Cancer Institute

Joyce Liu MD MPH

LB-290 Targeting MUC16 with the Antibody-Drug Conjugate DMUC5754A in patients with platinum-resistant ovarian cancer.  This data will be presented by Joyce Liu, MD, MPH from Dana-Farber Cancer Institute in the Clinical Trials Symposium on Tuesday, Apr 9 at 4.00 pm.

Dana-Farber issued a press release yesterday  – here’s the link. The picture of Dr Liu is from her Dana-Farber profile.

Ovarian cancer causes more deaths in women than any other cancer of the reproductive organs, with an estimated 20,000 women diagnosed with this cancer each year.  The majority of women are treated with traditional platinum based chemotherapies, and most of these relapse and develop drug-resistant disease.  This makes the development a new novel agent such as DMUC5754A that will treat platinum-resistant ovarian cancer a major potential breakthrough.

In an AACR media release, Dr Liu commented on how the drug works:

“This drug consists of an antibody and a potent toxin joined by a cleavable linker. The antibody identifies a protein, MUC16, which is highly expressed in ovarian cancers, and targets the toxin to kill the cancer cells.”

Liu went on to note that, “Unlike other cancer treatments, the antibody-drug conjugate releases the toxin with relative selectivity to the MUC16-positive cancer cells.  This allows delivery of drugs that would otherwise be too toxic for treatment.”

According to Liu, “If the activity of this drug is confirmed in additional trials, this will represent a novel type of therapy for ovarian cancer, with effectiveness in platinum-resistant ovarian cancer, which is the hardest type of ovarian cancer to treat.”

Genentech are particularly good at sharing early data at AACR, and based on the promising responses in MUC16 IHC 2/3+ patients, this new ADC compound is likely to progress to phase 2 – a compound to watch out for in the future.

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