Aug 2023
19m 43s
Drs. Lillian Siu and Melvin Chua discuss scientific innovations, disruptive technologies, and novel ways to practice oncology that were featured at the 2023 ASCO Breakthrough meeting in Yokohama, Japan, including CRISPR and gene editing, CAR T-cell and adoptive cell therapies, as well as emerging AI applications that are poised to revolutionize cancer care.
TRANSCRIPT
Dr. Melvin Chua: Hello, I'm Dr. Melvin Chua, your guest host of the ASCO Daily News Podcast today. I'm a radiation oncologist and I currently practice in the Division of Radiation Oncology at the National Cancer Center in Singapore. I also served as the chair-elect of the ASCO Breakthrough Program Committee, and, on today's episode, we'll be discussing key takeaways from this year's Breakthrough meeting. The global meeting in Yokohama, Japan, brought together world-renowned experts, clinicians, med-tech, pioneers, and novel drug developers to discuss scientific innovations and disruptive technologies that are transforming cancer care today. I'm joined by Dr. Lillian Siu, the chair of the Breakthrough Program Committee. Dr. Siu is a senior medical oncologist at the Princess Margaret Cancer Centre and a professor of medicine at the University of Toronto.
You'll find our full disclosures in the transcript of this episode, and disclosures of all guests on the podcast are available at asco.org/DNpod.
Lillian, it's great to be speaking with you today.
Dr. Lillian Siu: Thanks, Dr. Chua. I'm happy to be here.
Dr. Melvin Chua: We were just at ASCO Breakthrough, and it showcased some incredible scientific innovations, and really showed us how technology innovations in precision oncology, biotech, and artificial intelligence are transforming cancer care. What are your thoughts?
Dr. Lillian Siu: Yeah, it was a really exciting meeting, Melvin. The theme of this year's Breakthrough meeting was "Shining a Light on Advances in Cancer Care." And our Opening Session featured an illuminating keynote address by the renowned thought leader and tech trailblazer, Dr. Hiroshi or "Mickey" Mikitani, the founder and CEO of Rakuten and Rakuten Medical. In his address that was titled, "Innovative Technology and Oncology," he spoke so passionately about innovation and really seeing around the corner to predict what is coming and taking risks. And I think that's what medicine is about, not just what we have in front of us, but to predict and forecast what's coming. I totally was inspired by his address, and I think a lot of the audience felt the same way. He also spoke to us a bit about his company's development in photoimmunotherapy using novel technology and light therapy in head and neck cancer. And I think that's also an area of new technology that we should watch in the next few years.
Dr. Melvin Chua: I totally agree with you, Lillian. And one of the quotes that he spoke about really spoke to my heart. He spoke about the 2 choices: whether to do or not to do and not to do is not an option. So, I think that was a very compelling message to a lot of our audience at the meeting.
So, on this same note, innovation is a driving force in oncology, and we saw countless examples of this throughout the Breakthrough meeting. Were there any sessions that really stood out for you?
Dr. Lillian Siu: There were so many exciting sessions. First of all, there is the "Drugging the Undruggable" session. This is a really important session because in the past we felt that certain cancer targets such as KRAS, MYC, etc., are not druggable. KRAS G12C is the poster child in this area. So, during this session we heard about many ways that we are now looking to target these so-called undruggable molecules in the cancer cell. And we talked about molecular glues, we talked about degraders, and really novel ways that are not yet reaching the clinic, called "cyclic peptides" were discussed by one of the speakers.
The other session that is very interesting also is CRISPR and gene editing. Obviously, we all know a little bit about gene editing, really trying to change or knock in some genes that are important perhaps to change the function. And one of the sessions talked about trail targeted induced mesenchymal stem cells, and perhaps this is a way to, again, deliver novel therapies and novel treatments to our patients. There were many examples of how CRISPR and gene editing can be ultimately going to the clinic to benefit our patients in terms of therapeutics.
I want to highlight another session, which is the CAR T-cell and Adoptive Cell Therapies. I think everybody knows about CAR T-cells, but in this session we talk about non CAR T-cells or newer things such as off the shelf NK cells, Natural Killer cells from cord blood. So, this way it is allogeneics, in other words, we don't have to rely on only a patient's donation of their samples, but actually get it from off the shelf from other donors. There are other ways to really use human induced pluripotent stem cells that we can armor them by transgenes and also CRISPR out any unwanted genes, for example, to enhance an effective function of T-cells. So many, many exciting ways to bring these cell therapies to the patients.
And last but not least, I want to highlight Dr. Chris Abbosh, who is one of our keynote speakers, talking about molecular and minimal residual disease and early cancer detection using circulating tumor DNA or liquid biopsy. He talked passionately about the TRACERx study, which he is instrumental in terms of leading together with Charlie Swanson in the UK. This is a study that really has uncovered a lot of science about cancer heterogeneity. And in that study, he also studied circulating tumor DNA and really shed a lot of light about clonal and subclonal dynamics over time that changes.
Dr. Melvin Chua: And just to touch on that point about innovation and how that translates to cancer care, I think it was great that we had those case-based applications in lung cancer, in breast cancer, and the virus-associated cancers. And I like how the speakers were able to bring in the Ying and the Yang, bring the West and the Eastern perspectives in these interactive sessions. I particularly enjoyed all of them. But the session on the lung case discussion where we know that there were this EGFR mutant lung cancers that are prevalent in this part of the world in Asia. I thought the interaction between the speakers was fantastic.
On the same note about therapies and we heard about novel therapeutics at this meeting as well. I wonder what your thoughts are about some of the sessions, and do you think some of these technologies were able to be brought into practice? And your thoughts on the novel therapeutic session that happened at Breakthrough, do you think this will actually impact clinical care?
Dr. Lillian Siu: Oh, for sure, Melvin. The 5 areas that were covered during the Novel Therapeutics session are really drugs already in the clinic. And for example, the first one was about antibody drug conjugates. We know there are now at least 12 antibody drug conjugates already approved by the FDA and many more likely to be approved in the near future. And the session really talked about what's next, how to improve upon ADC, for example, using better drug antibody ratio, talking about new payloads and really new formats that make perhaps ADCs even more potent in the future.
There was a session on oral immunotherapeutics. It was really how to target the innate immunity. And I think novel oral immunotherapeutics is very important because we all know PD-1, PD-L1 inhibitors have been the backbone, but we need another Breakthrough. And having oral immunotherapeutics will make it very attractive for patients because they don't have to come to the cancer center to receive the drugs.
Another part of that session was about T-cell engagers and bispecifics, really how to bring molecules to the T-cell, to the effective cells so that they are able to be phytotoxic to the tumor. We talked about also oncolytic viruses, how are the new ways to utilize this kind of natural agent to target the cancer cells. And lastly, we also talked about personalized cancer vaccine, which is obviously very timely. We all know a lot about vaccine now after the COVID pandemic and how do we use cancer vaccines to be a good therapeutic drug? I think especially important in the earlier disease stages as adjuvant therapy. Some exciting data, for example, in pancreatic cancer, as adjuvant really is groundbreaking for this whole topic of cancer vaccination.
Dr. Melvin Chua: That's great. And for me as a radiation oncologist who's not so deep in drug development, hearing all the talks at ASCO Breakthrough was really informative for me and I learned a lot. In particular, you spoke about the whole session there was oncolytic therapy and the results in glioblastoma multiforme, we know it's a deadly disease, was certainly very impressive. And so, it speaks to the whole notion that in fact, some of this stuff is in fact reaching the clinic and making a difference in deadly diseases. I think there's a lot to take in from there.
Dr. Lillian Siu: Melvin, you're so humble. I know you're a big expert in artificial intelligence and I think the whole session about AI applications in precision medicine really was not just in that session, but a whole theme that went throughout the entire meeting. So, I'm very interested to know what you think about some of the presentations around AI and disruptive technologies in precision medicine, such as next-generation multiomics, etc. What are your thoughts?
Dr. Melvin Chua: Absolutely, I agree with you. And there was so much material within the AI session, the multiomic session, as well as the keynote [address] by Dr. Maryellen Giger, which basically speaks about some of the pre-existing or historical work on artificial intelligence in radiology. And I'd like to first talk about the keynote by Dr. Maryellen Giger. It was very nice that she elegantly showed how AI was in fact already in practice in radiology, where it helped to fulfill or address a need for radiologists. Almost 20 years ago, they were able to show that using computer vision, you were able to basically facilitate the calling of abnormal mammograms. And it was inspiring to see how these early thoughts have now basically accelerated a lot of the advances that we see that are in practice today.
The other thing that was also was to see this global collaboration, the need for global collaboration in the artificial intelligence space and the radiologists are clearly leading the way. And I think part of the impetus for this effort came from an opportunity that arose during the COVID pandemic that clearly affected all facets of healthcare. That was a nice segue to the very sort of dense 1 hour session we had on precision oncology care with artificial intelligence. I think when we designed this session, we were very deliberate that we wanted to address all aspects of how AI could be applied. From real-world clinical data, we saw examples of how having good, well-annotated data sets could actually help to accelerate and facilitate liver cancer screening in Hong Kong. Then we also saw a very simple, practical application of AI in pathology, where apart from just having this tool to be able to extract features that could potentially predict outcomes of patients and predict drug responses, we saw a very practical example that applying AI in digital pathology could actually homogenize or harmonize the ways the pathologists review their cases. And so, I thought that was very neat and could speak to all our clinicians across both developed and developing countries.
We also saw very exciting stuff on the use of AI in terms of calling out mutations because we know that next-generation sequencing is pretty much a cornerstone of how we practice in oncology today. And yet we know that there are prohibitive costs that preclude this technology in certain parts of the world. And it was nice to see how AI could actually lower the cost of some of these sequencing technologies like being used in liquid biopsy.
And then finally, there was some fancy science as well that was showcased in the spectrum when we saw how industry as well as academics are thinking about integrating multiomic data sets to then be able to accelerate drug discovery, help define patients better, and so that we can think about how to look at precision oncology using targeted treatments for specific patient phenotypes. So I think this was a very nice transition to the Next-Generation Multiomic Technology session, where, again, some of these topics were touched on, ranging from liquid biopsies, and this was already covered in Dr. Abbosh's talk, which you spoke about, and as well as the preceding day session where we heard snippets of it. And it was again reinforced by the speakers when it showcased liquid biopsies. We have heard so much about it in the last decade and we see it made approved now for use in the clinic, but yet so much remains unknown, like the discrepancies between assays, addressing the cost of assays and, importantly, how we deal with the information. So, I think we are just at the tip of the iceberg here. A lot of the clinical evidence needs to be generated in due course to address some of these questions.
At the same time, it was also nice to see some of the new technologies being applied in discovery science. So, we know that immunotherapy is a major player in oncology today, and the Breakthrough represents a forum whereby we're able to bring translational scientists to showcase their work. And we saw examples of that at this meeting where single cell technology, digital spatial technology, being able to apply that in pathology specimens and how the two are integrated to be able to review more novel science to us, to show us how immunotherapy works or doesn't work in some patients. Both of us have touched on so much content that was showcased at the Breakthrough, and I think this speaks to the impact, the learning experience we've had from Breakthrough and I think that's the intended purpose of this meeting.
Dr. Lillian Siu: Yeah, I agree. It truly was a very exciting 3 days. And I particularly like the multiomics session where we see that the technology is so advanced just in a really short period of time. Over the last few years, we've been now able to go into single cell resolution where in the past I don't think we would ever dream of being able to do that. In fact, I recall in the single cell session, we can even see messenger RNA on the slide, which I thought was fascinating, something that I cannot imagine we can see by the naked eye. It really is an exciting time in oncology, Melvin, and the field is advancing with these new innovations and therapies, but at the same time, I think it's important that we do live globally and we need to work really also to help improve access to quality-assured cancer medicines and diagnostics in the low and middle income countries. What do you think about that part? Did we do a good job in addressing that in the meeting?
Dr. Melvin Chua: Absolutely, Lillian. We had a special session that was chaired by Dr. Peter Yu and the lecture was delivered by Dr. Gilberto Lopes from the University of Miami. And we know that he's a strong advocate for this. And the session title spoke to this topic very pointedly, "How Science, Technology, and Practice Can Be Enabled in Lower- and Middle-Resource Settings." And I thought that the work that he highlighted, the whole ATOM coalition, was important. ATOM basically stands for Access to Oncology Medicines, and it was established last year by the UICC, the Union for International Cancer Control, along with global partners to improve access to anti-cancer drugs and to develop processes for ensuring quality delivery, as well as the optimal utilization of medicines in middle- and low-resource settings. And I think there's a lot more work to be done.
Some of the information they showed was very compelling to me from this part of the world. But we know that Asia isn't very heterogeneous in terms of the resources, in terms of the culture. And I thought that the drug pricing, for example, how that should be addressed across the different countries is an important topic to pick up. And I hope his lecture only invigorates this conversation going forward.
Dr. Lillian Siu: Yeah. Thanks, Melvin. I totally agree. That was very inspiring. Breakthrough is such a one of a kind, international gathering that we are not only able to network while we're there; we also have a session to really allow attendees to leverage international cancer networks, to learn a bit about them, all the way from, for example, some of the North American groups to Asia Pacific groups to even global groups, and how we interact between pharma and academia, really transcending boundaries. And I think it is really, really important for us to now have these networks address issues such as equity and cancer care innovation, novel approaches and so much more. And I think, I am sure you're going to do a good job in making sure that gets into the agenda in our next year's meeting in 2024. Ultimately, we hope that these collaborations in cancer research will help to improve the outcomes for our patients with cancer.
Dr. Melvin Chua: Thank you again for sharing the great highlights of ASCO Breakthrough, and I'm really appreciative of your work, and your commitment to build a really robust program for this year. So, thank you.
Dr. Lillian Siu: And thank you, Dr. Chua. And you can bet that I will not miss Breakthrough 2024 in Yokohama in August next year. I will be there.
Dr. Melvin Chua: Okay, I'll hold you to that.
And thank you to our listeners for your time today. You'll find links to all of the sessions discussed today in the transcript of this episode. And finally, if you value the insights that you hear on the podcast, please take a moment to rate, review and subscribe wherever you get your podcasts. Thank you again.
Disclaimer:
The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience and conclusions. Guest statements on the podcast do not express the opinions of ASCO. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement.
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Disclosures:
Dr. Lillian Siu:
Leadership (Immediate family member): Treadwell Therapeutics
Stock and Other Ownership Interests (Immediate family member): Agios
Consulting or Advisory Role: Merck, AstraZeneca/MedImmune, Roche, Voronoi Inc., Oncorus, GSK, Seattle Genetics, Arvinas, Navire, Janpix, Relay Therapeutics, Daiichi Sankyo/UCB Japan, Janssen, Research Funding (Institution): Bristol-Myers Squibb, Genentech/Roche, GlaxoSmithKline, Merck, Novartis, Pfizer, AstraZeneca, Boehringer Ingelheim, Bayer, Amgen, Astellas Pharma, Shattuck Labs, Symphogen, Avid, Mirati Therapeutics, Karyopharm Therapeutics, Amgen
Dr. Melvin Chua:
Leadership, Stock and Other Ownership Interests: Digital Life Line
Honoraria: Janssen Oncology, Varian
Consulting or Advisory Role: Janssen Oncology, Merck Sharp & Dohme, ImmunoSCAPE, Telix Pharmaceuticals, IQVIA, BeiGene
Speakers' Bureau: AstraZeneca, Bayer, Pfizer, Janssen
Research Funding: PVmed, Decipher Biosciences, EVYD Technology, MVision, BeiGene, EVYD Technology, MVision, BeiGene
Patents, Royalties, Other Intellectual Property: High Sensitivity Lateral Flow Immunoassay for Detection of Analyte in Samples (10202107837T), Singapore. (Danny Jian Hang Tng, Chua Lee Kiang Melvin, Zhang Yong, Jenny Low, Ooi Eng Eong, Soo Khee Chee)