Chairman of Chan Soon-Shiong Family Foundation, Exec Chairman ImmunityBio, Chairman and Chief Executive Officer of Los Angeles Times Media Group (LATMG)

Los Angeles
Joined September 2009
Well said. A good explanation. Simple but profound. Our NK snd T cells have a highly specialized receptor on their surface called IL15. Ankitiva is a protein we have manufactured that is given as a subcutaneous injection and binds to this IL 15 receptor on the surface of these cancer killing cells, and when this happens these protective and cancer killing NK and T cells expand in huge numbers and become activated. That’s the Bioshield. That’s what is needed to kill cancer and to drive what we call Memory T cells. And we measure the levels in your body of these NK and T cells by a simple blood test called ALC. The Absolute Lymphocyte Count. The ALC levels have been hidden in plain sight. So ask your doctor what are your ALC levels ..” What is my ALC” should be a routine question ….and don’t be surprised if your doctor had not looked at it before or know about the term ALC ..It’s not your doctor’s fault because until now, in the history of medicine there was nothing they could prescribe to fix an ALC if it was low for this medical diagnosis called LYMPHOPENIA. We could fix anemia so we routinely looked at hemoglobin levels and oncologists routinely check the Red blood cell levels after chemo therapy. We could fix what we called neutropenia, so oncologists routinely looked at neutrophil levels called ANC ( absolute neutrophil count). So our doctors are very familiar with ANEMIA and NEUTROPENIA all measurable and treatable. But until now we could not fix LYMPHOPENIA as measured by a low ALC below 1000 cells - the most dangerous diagnosis of low NK cells and T cells - so we ignored ALC ( Absolute lymphocyte count) present in the same test, called the CBC. Hope this explanation of all these medical acronyms helps to explain why ALC has been a “ mystery” for so long …,both to our healthcare professionals as well as the patients who need to know. Today it is not just measurable but treatable. Anktiva is today only approved for a small subset of bladder cancer. We have completed our trials that took years to do across 10 different cancers and showed when we increase ALC in patients regardless of tumor types including patients with lung cancer, the results of combining Anktiva changes the course of survival regardless of the cancer type. That makes sense since we were treating the immune system and our NK and T cells kill ALL CANCERS regardless of tumor type. Details of this study has been submitted for peer review. More to come. Education through X! Connecting the dots of a 35 year quest with the epiphany starting from my earliest publication while at UCLA in 1990 that NK cells are the key immune cells to survival and now perhaps even the key to longevity.
Replying to @DrPatSoonShiong
Imagine your immune system as a tiny medieval town. Your lymphocytes are the knights, the scouts, and the quick-thinking town guards who keep troublemakers from getting past the gates. Dr. Pat Soon-Shiong’s line is basically saying: “Lymphocyte depletion is the floor” means the lowest thing you should tolerate is having too few of these guards. If your lymphocytes drop to a very low level, the immune system is operating on the basement floor of performance. “Functional competence is the ceiling” means the best you can hope for is that your lymphocytes are not only present but lively, skilled, alert, and doing their jobs well. High-performing guards on the top floor. Then he says: “Ask your doctor, what is my ALC?” ALC means Absolute Lymphocyte Count, a number you get on a routine complete blood count (CBC). It tells you how many lymphocytes you have per microliter of blood. Why does this matter? Your ALC is one of the simplest, clearest ways to see if your immune system is struggling, stressed, inflamed, suppressed, or recovering. Low ALC can come from chemotherapy, steroids, infections, chronic inflammation, autoimmune conditions, or even long-term metabolic disease. High or normal doesn’t always guarantee those cells are working well, but too low is always a red flag.
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Thanks for the thoughtful questions, Mary. You’re absolutely right—ALC is a powerful prognostic marker, and we’ve now demonstrated across >10 tumor types, including lung cancer, that preserving or restoring lymphocytes directly correlates with prolonged overall survival. So from a prognostic marker to a treatable modifiable condition of lymphopenia. Radiation, including targeted radioligands like Pluvicto, can profoundly suppress ALC. What we’ve seen is that administering Anktiva (IL-15 superagonist) both before and during radiation protects and expands CD8⁺ and NK cells, preserving immune competence during treatment. We are actively recruiting patients for our lung cancer and GBM trials and expanding into prostate cancer, including combinations with Pluvicto, to test this “immune shield” concept in mCRPC. We have shown that maintaining ALC above ~1,000/μL during radiation results in rapid drop of PSA levels to undetectable. We’d welcome your input as a radiation oncologist. Happy to arrange a discussion—our team can walk through the trial designs, inclusion criteria, PD-L1 correlations, and planned endpoints for prostate, head and neck and GBM cancers. Appreciate your engagement and scientific curiosity—it’s exactly this collaboration that drives the field forward.
Dr. Soon-Shiong, this is an interesting thread on ALC as a prognostic factor, and Anktiva's potential as a Bioshield for mCRPC w/Pluvicto. I am not familiar with Anktiva and have some questions based on a quick review of trial data (mostly for bladder ca and NSCLC) for consideration of integrating EAP for our mCRPC patients starting Pluvicto (Gleason 6-7 vs 8-10, ECOG 0-1 vs 2, low vs high burden disease). I don't expect a detailed response, but if you have any resources that contain this info, it would be welcome. I assume you get asked these questionsa lot. - You mention that all tumors can benefit. Prostate ca has low TIL and low TMB / PD-L1. It seems like the greatest benefit is expected with tumors that have both low TIL and high TMB / PD-L1 (for synergistic effect), correct? Also, Pluvicto's lymphopenia risk is low compared to other systemic treatments such as taxanes (14.2% any grade, 7.8% grade 3/4 per VISION). - Given these factors, what would be the difference in efficacy you've seen using this with prostate ca vs NSCLC? Do you think any combo like adding an ICI (ie, pembro) would bridge the gap? - How many mCRPC patients have you treated in conjunction with Pluvicto? Out of those cases, what ALC recovery rate do you see w/concurrent C1 vs reactive (post-nadir) timing? And for those who have ALC recovery, what % have at least PSA50? (If you have data that stratifies as above, that would be ideal.) - What % are non-responders? And what biomarkers (ie, NK, CD8+) best predict secondary ALC drops by 3 months and 6 months (especially in patients with high-burden disease / Gleason 9-10) - assuming you check flow cytometry at baseline and at certain times post-infusion? - What are the inclusion/exclusion criteria for approving individual EAP cases at this time and what is the OOP cost to patients? - Do you have a plan for phase 2 and 3 mCRPC clinical trials? If not, could you expand the QUILT trial and add an arm with Pluvicto? Also, what are the endpoints (ie, PFS, OS, etc) in lymphopenic population and the timeline for site activation (if say I had interest in being PI at our Cancer Center that handles Pluvicto)? - Finally, in preliminary analyses, how does Anktiva impact QOL metrics (pain, mobility, etc) in patients with symptomatic mets vs Pluvicto alone, and any decrease in side effects, such as xerostomia, n/v, or cytopenias? I know these are a lot of questions. I'm interested in learning more and seeing if this is something that might be appropriate for some of our prostate patients. Thanks, Mary
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Excitingly it appears that PDL1 levels do not affect the activity of NK cells in our lung cancer trial. Data submitted for publication. More soon
Replying to @DrPatSoonShiong
Dr., what about oncogene driven NSCLC with very low PD-L1?
Lori reach out to us at CssIfm.org and we can treat before your husband has radiation. I know this is frustrating but this is also our battle to help you and your husband. We will write to the fda.. one patient at a time. Thats our same frustration that we were asked to wait till the patients ALC drops. Our mission is to help all in need and since you are in LA that makes it easier on your family for us to help.
Replying to @DrPatSoonShiong
Then it would be wise to cut the red tape. My husband has to start Chemo and radiation Tuesday and go through that before qualifying for your study and if you were to begin with us now you would have documentation connected with Cedar Sinai. Help. piped.video/Oyq6-Z7im3M?si=6PWW…
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Lymphocyte depletion is the floor; functional competence is the ceiling. Ask your doctor, what is my ALC?
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This is my daily struggle! As of now it is available in LA and only for bladder cancer. We are trying desperately to explain to the oncology and regulatory world that our epiphany that NK cells as measured by your ALC matters. Also working hard to explain to FDA why these NK and T cells are as important to flight cancer as red blood cells are for your body to deliver oxygen! Trying hard.
Replying to @DrPatSoonShiong
Hi Dr Soon-Shiong, I recently underwent radiation for breast cancer - no chemo. My lymphocytes are at 819. Could this help me? Where can I get it? I am in the Denver area. Thank you.
Was able to provide access to Anktiva yesterday ..NK and T cells matter especially when radiation is happening . One patient at a time ..a difficult way but we will continue to work as hard as we can to make this supercharged NK cancer killer available to all who desperately need it.
Scott Adams medical update Yesterday he completed the first of six rounds of Pluvicto, which will take several months and has a one in three chance of working. In addition to this, he will be doing BioShield. Please continue to pray for Scott!
Scott we can add Anktiva to Pluvicto and have exciting data in Prostate cancer. Please reach out to the clinic @cssifm and we will help you. Raising your NK and T cells can change the course. We have to apply to FDA one patient at a time. But will get that done. Details piped.video/mgZaT-OriO8
On Monday, I will ask President Trump, via X, to help save my life. He offered to help me if I needed it. I need it. As many of you know, I have metastasized prostate cancer. My healthcare provider, Kaiser of Northern California, has approved my application to receive a newly FDA-approved drug called Pluvicto. But they have dropped the ball in scheduling the brief IV to administer it and I can’t seem to fix that. I am declining fast. I will ask President Trump if he can get Kaiser of Northern California to respond and schedule it for Monday. That will give me a fighting chance to stick around on this planet a little bit longer. It is not a cure, but it does give good results to many people.
Go Dodgers !!!!!!!! Shows what happens when you never give up!!! Congrats to an amazing team. Go LA
Connecting the dots
Replying to @DrPatSoonShiong
Lymphopenia is very hard to reverse , until Anktiva. It blows my mind why we didn't address this problem sooner, especially after the local immine boost of BCG in bladder washes leading to apoptosis of cancer Why further shock the body by adding a steroid to every chemo cycle...
Please see @cssifm and complete forms for GBM for the team to evaluate
Replying to @DrPatSoonShiong
Dr. Soon, my Dad’s ALC count was <1,000 when he was on chemo/radiation for his GBM. He has been off of that for about 30 days & ALC has been raising. Is this still important even though his counts have been increasing on their own?
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It is so consistent with decades of reports in the literature that without NK and T cells ( called lymphopenia ) the survival rate of patients, regardless of cancer type, is highly significantly reduced with this lymphopenia. We can now change that course. A simple blood test tells if the patient has Lymphopenia. The epiphany since 1990 is that NK cells within us is the first responder that needs to be activated to change the course of cancer. I will try to connect the dots to show how Anktiva is part of a finely orchestrated cancer Bioshield platform to stimulate both the innate ( NK cells) and adaptive ( T cells) immune system … a complex orchestrated dance of proteins in our body .. 35 years of work to get to Memory T cells. Ask your doctor “what is my ALC?” NK CELLS MATTER. ALC levels have been hiding in plain sight for decades in a routine test called CBC ( to measure your blood levels for anemia and neutropenia) and has been overlooked by us as clinicians because no drug existed until now to reverse lymphopenia as measured by ALC ….until Anktiva was approved. This thread begins my attempt to describe the journey of insight and evolutionary change of how we approach the treatment of cancer .. and how we re think what “immunotherapy” really means …checkpoint inhibitors alone like Keytruda is not enough.
Replying to @alc2022
2. $IBRX's Anktiva has been show to reverse lymphopenia with a high success rate. In clinical trials, lymphopenia trials notably improved cancer patient outcomes.
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When BCG is given, the tumor finds a way to hide from T cells. So taking off the brakes from T cells using checkpoint inhibitors alone won't work. This study confirms this. NK cells matter and that is how ANKTIVA is different.
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Shortage of BCG has been a problem for a decade now. We solved this with a supercharged BCG @ImmunityBio . Together with the Bioshield it drives memory T cells in patients with bladder cancer.
Recombinant BCG Access Program Addresses US #BladderCancer Shortage - Neal Shore, MD, FACS @CURCMB and @UroDocAsh @MDAndersonNews discuss recombinant BCG, now available via FDA-expanded access. Amid chronic shortages, this "supercharged" version offers scalable supply, flexible use (with or without N-803), and early efficacy, restoring hope for #NMIBC care. #WatchNow > bit.ly/44FQsSW