@thecellengineer

Biomed PhD. Thoughts posted are my own and should not be taken as financial advice - DYOD

Colorado, USA
Joined November 2021
$CABA ripping 30% on news of insider buys. Cat might be out of the bag, but I suspect this will trickle back to $2.5 bc of the pre-funded warrants. Lots of intrinsic and competitive risk but at <300M mc I still see a strong setup with upcoming catalysts. My pick for biosquidgames
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Is it just me or did the graphic design team for BeOne draw heavy inspiration from gummy worms to illustrate their CDACs
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$IMTX starter today. Thesis note to follow soon.
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Not sure if this even reverberates back to $CABA stock price but not a bad time to take some profits…so I did. Will revisit buying back to full position later in the year.
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Really cool to see things like this rolling out. The compounding effects from using a tool like for science could be hard to spot at first, but in hindsight obvious. It’ll impact how hypotheses are formed, for example, or make its way into the classroom and change the way students conceptualize biology.
Today we're releasing a preview of AIDO Cell, a world model of the human cell. It simulates one cell across DNA, RNA, protein, through regulatory networks and whole-cell behavior. Not four models handing results to each other. One system.
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New deep dive post: $CABA. Check it out, let me know what you think. thecellengineer.substack.com…
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May regret not “trimming on news”. Who knows if the $NVS jet is for $COGT but it’s currently #1 position in my PA and I’m not hopping out of this now. Obvious worry is no deal deflates sp into NDA and launch is shorted.
$COGT base support achieved and now rebuild into June data and updates. Been in it since June 2025 at $5.62 but bought into strength now at cost basis of $19.53 and a sizable chunk of my port. Certainly see some risks but >2x upside is certainly possible. DYDD and NFA.
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Interesting finding, though I’d expect downstream markers of inflammation to decrease in the heterozygous mice like we see in humans, e.g., IL-6. Makes me think we’re less likely to see this quirk in show up humans from NLRP3 inhibitors. The clinical drugs are using those as biomarkers, and wouldn’t advance if inflammation was ramped up.
For a decade, the anti-aging bet was to lower NLRP3, a protein that switches on inflammation and helps drive age-related disease. A new paper says lowering it partway made mice age faster. The logic was sound. Chronic inflammation rises with age and contributes to heart disease, Alzheimer's, diabetes, and frailty, and NLRP3 is a major source. Removing it entirely in mice makes them age more slowly. That result, from 2013, kicked off a race to drug NLRP3. But a drug doesn't delete NLRP3. It only lowers it. So @CorderoMarioD's team made mice with one working copy instead of two, which is closer to what a drug does. Those mice aged faster: shorter lives, more frailty, worse metabolism, and, in females, earlier ovarian failure. The mice compensated. Lowering NLRP3 caused a second inflammasome, NLRP1, to rise and form a hybrid complex that produced more inflammation, not less. Cutting both restored them. Those blockers are already in clinical trials in people. Roche, NodThera, Ventyx, and Novartis all have NLRP3 inhibitors in human trials for conditions including Parkinson's, obesity, and heart disease, and each one lowers the protein rather than deleting it, the exact move that backfired in these mice. If that carries over, a partial blocker could worsen the inflammation it targets unless it also hits NLRP1. Still, it's mice, it's genetics not a drug, and human NLRP1 biology differs. A flag, not a verdict. Thursday, 16th July, @LauraMinquini and I will cover it with the author @CorderoMarioD on @athenabiorg's Menopause and Fertility show. The same inflammation that ages the body also ages the ovary.
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$IMTX starter today. Thesis note to follow soon.
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$COGT panKRAS inhibitor versus $ERAS 's ... AsPC-1 considered more aggressive/metastatic than Panc04.03
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$mbrx bought starter at $2.47
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This vial contains a new drug called PAC-832, which I recently invented to treat Alzheimer’s disease. It is the world’s first selective GalR1 antagonist. I designed and synthesized PAC-832 in a chemistry lab I built in my garage. (1/16)
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FDA’s latest reversal on uniQure’s ($QURE) AMT-130 bodes favorably for Kyverna ($KYTX) and Cabaletta ($CABA).
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$CABA hot take on new slides & Jeffries call. tl;dr clear accretion to NPV despite market reaction. Myositis PoS up on data - main risk is SA design. JDM data looks encouraging. SSc moves from blue sky to base case. No-PC SLE data is positive incremental signal. Downside of few meaningful catalysts left this year - FDA clarity on SA design is a possible big one. Unlikely to see much if any further no-PC data until it is mature enough to comment on selected dosing and preliminary safety and efficacy with durability. The work CABA continues to advance is medically transformative and potentially immensely valuable. Let’s see how the market absorbs the data. Pros: - No-PC SLE/LN — IMO this data looked encouraging and perhaps is the biggest derisking factor for long-term value creation. Granted, just 2 patients. The SLE patient had deep B cell depletion and then LN patients had 90% reduction in B cells levels. LN is a tough nut to crack but… look at the patient’s starting level of B cells relative to every other patient’s(!) (including other LN with PC) - it’s top-3 highest. PC is probably doing some debulking work that creates a more hospitable environment for CAR T expansion - the data show a possible ~10 day delay in B cell depletion for no-PC SLE/LN and pemphigus relative to the rest of dataset. Regardless, this data is a significant pieces of evidence that PC isn’t required for B cell reset in patients with more systemic autoimmune conditions. It wouldn’t shock me to see >>50% of LN/SLE patients have deep B cell depletion w/o PC at higher doses. BAFF also suggest this could be overcome with higher dose. - Myositis and scleroderma data are strong. They are disease modifying in way current and imminent therapies aren’t. Especially compelling as a product in juvenile DM and scleroderma where disease severity will organically drive adoption. - The JDM data increase PoS for PRV voucher (worth ~$100M) - In SSc the improvement on FVC will be the recitation endpoint and could be first in class as a disease modifying therapy - stopping or reversing respiratory decline rather than slowing it. Huge for these patients as they have usual life expectancy in the 2-3 year range. Encouraged by the 12 patients evaluated - signals demand that should keep the 24pt registrational trial enrollment on track. - Management is laying the ground work with payer engagement for DM and SSc commercial launches. We’re told that 52wk durability for TIS improvement is the minimum and 78wk is ideal. The durability is maturing with 3 pts showing sustained durability out to a year and one pt with a durable response out to 80wk. The TIS metric is a bit noisy - lots of ups and downs but every 6/6 patients (including juv DM) with mod/major improvement at 16wk held through at least 32 wks. Not only does this data derisk P3 approval, it suggests RESE-CEL strongly aligns with payer incentives. Cons: - The registrational myositis trial requires 14 DM patients and 3 ASYS. Enrollment is quietly filling but no indication from management on actual numbers. Possible delay flag. - The no-PC data will require higher dosing of RESE-CEL for desired response/durability in SLE/LN and potentially DM, SSc, MG - this could produce unforeseen safety issues. Any serious signals would challenge the outpatient GTM strategy for most indications. - Few anticipated 2026 catalysts. A rerate, deal, or FDA commentary on SA registrational design would be pleasant surprises but not forecasted.
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Also note the delay in B cell depletion for no-PC. Interesting to see given the CAR T expansion happens more or less around the same time as PC patients shown in image above
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LN no-PC starting B cell count was quite high
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I'm excited to see more FROs like deliverome.org/ and industrial policy like NSF's X-Labs. Modern biotech increasingly benefits from industry-grade datasets, tooling, and engineering that are not easily produced by even the best NIH-backed academic collaborations and don't align with a VC thesis.
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This is great scientific innovation but we NEED access innovation. We’ve had FDA APPROVED PCSK9 inhibitors since 2015, yet of the 80M Americans with elevated cholesterol <3M have recieved this therapy ever. That is 9 of 10 not getting treatment. Gene therapy is harder.
1/5 I'm a cardiologist. I have spent twenty years watching cholesterol destroy arteries, trigger heart attacks, and kill people I care about. Today, Eli Lilly presented data that may begin to end that era. VERVE-102. A single infusion. One dose. It uses base editing to permanently turn off the PCSK9 gene in your liver. Presented today at the European Atherosclerosis Society Congress: 88% reduction in PCSK9. 62% reduction in LDL cholesterol. Sustained up to 18 months. No treatment-related serious adverse events. One infusion. Not daily pills you forget to take. Not monthly injections. One dose — and your cholesterol may stay low for the rest of your life.
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