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Fate Therapeutics Inc

Fate Therapeutics Inc (FATE)

1.23
-0.13
(-9.56%)
Closed February 26 3:00PM
1.24
0.01
(0.81%)
After Hours: 6:59PM

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NY1972 NY1972 15 hours ago
This is why 1xx CAR matters. CD19 donor dose effective at 26 mil per MSK trial
$FATE 1xx: recommended phase 2 dose (RP2D) was 1 × 106 CAR T cells/kg.
$ALLO 120× 106 CAR T cells

https://ashpublications.org/blood/article/142/Supplement%201/892/502952/A-Phase-I-Study-of-CD19-Targeted-19-T2-28z1xx-CAR
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jondoeuk jondoeuk 1 day ago
For in vivo, I know a number are using either viral vectors or LNPs to target certain populations, such as CD7+ T and NK cells.

As for the TME, CAR-T can actually make it worse. In this paper (looking a B-ALL), MDSCs expand, hypoxia increases, and T-cells (both CAR and endogenous) exhibit severe exhaustion. So multiplex gene editing (including designing local secretion of certain ''payloads'') and combinations will likely be needed https://www.biorxiv.org/content/10.1101/2024.12.20.629119v1.full
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jondoeuk jondoeuk 1 day ago
For cancer, I hope they open dose expansion cohorts testing FT836 with (low dose) radiotherapy [1], (low dose) chemo [2], or panobinostat [3]. Also, test multiple infusions.

Refs:
1 https://aacrjournals.org/cancerres/article/81/13_Supplement/1591/667388/Abstract-1591-FT536-Preclinical-development-of-a
2 https://jitc.bmj.com/content/10/Suppl_2/A291
3 https://pmc.ncbi.nlm.nih.gov/articles/PMC7269842/
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NY1972 NY1972 2 days ago
Holy grail: pan cancer, off the shelf, no chemo T cells. all that for a donut.
How many bio investors can read?
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NY1972 NY1972 2 days ago
Revealing .. T-Dxd and EGFR mut, KRAS ....
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NY1972 NY1972 3 days ago
There is a lot to be digested in the new deck. The tumors targeted are reviewing.
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glenn1919 glenn1919 6 days ago
FATE.....................https://stockcharts.com/h-sc/ui?s=FATE&p=W&b=5&g=0&id=p86431144783
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glenn1919 glenn1919 2 weeks ago
FATE..................................................https://stockcharts.com/h-sc/ui?s=FATE&p=W&b=5&g=0&id=p86431144783
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NY1972 NY1972 2 weeks ago
ADR works like CD16a/ADCC but targets exhausted T cells 4-1BB+ instead. Invivo has plenty of issues uptake, off target...... Effective ACT needs to keep TME from resurgence after LD. FT525 have a good chance of doing it with 3 doses.
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jondoeuk jondoeuk 2 weeks ago
New deck https://ir.fatetherapeutics.com/static-files/1cac8c4b-ac0b-42cf-bc22-80acbc38405b

FT829 (anti-CD19/CD38) is new and will be tested in autoimmune diseases. CD38 is involved in many, including lupus https://www.sciencedirect.com/science/article/abs/pii/S156899722300023X

I hope the anti-CD19/BCMA candidate is not far behind and they will take at least another forward (anti-CD19/CD20).
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jondoeuk jondoeuk 2 weeks ago
A lot rests on the ADR tech.

I should also say that in vivo cell therapies are moving into the clinic (some are not giving any LD chemo). Pretty early data from one trial https://jitc.bmj.com/content/12/Suppl_3/A1712
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NY1972 NY1972 2 weeks ago
FT829, FT836 no LD req'd. FT525 DBLCL no LD req'd. CEO is sending a message but few can hear.
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NY1972 NY1972 4 weeks ago
Would be clear if they stratified by NLR. Gastric have higher NLR where the Ab failed for good. It seems to work when NLR is low (before VEGF) with high CD8 clones in CRC.
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NY1972 NY1972 4 weeks ago
Many failed attempts 4-1BB (26 clinical prgms - 0 approved), these T cells must be passively protecting the cancer cells. Also Circulating aged neutrophils (e.g., those undergoing senescence or prolonged circulation due to impaired clearance) have been reported to express higher levels of 4-1BB compared to younger neutrophils.
We will see if high dose 522 + Rituximab can result in CR without LD in DBLCL patients.
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jondoeuk jondoeuk 4 weeks ago
The PR is an utter mess! The ORR across subgroups is higher, but the (m)PFS isn't that great.
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jondoeuk jondoeuk 4 weeks ago
We won't know until it is tested, but from this: ''We found activated CD19 CAR.ADR T cells have lower levels of detectable 4-1BB on their surface compared to CD19 CAR T cells, suggesting partial downregulation or masking of 4-1BB upon ADR expression (Supplementary Fig. 9a). Indeed, expression of a truncated non-signaling ADR on activated T cells protected them from cytotoxicity by ADR T cells (Supplementary Fig. 9b-d) so that cis-masking of 4-1BB by ADR likely contributes to fratricide resistance of activated ADR T cells.'' https://pmc.ncbi.nlm.nih.gov/articles/PMC7854790/

FATE has its own data (that they still won't share!)
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NY1972 NY1972 4 weeks ago
Hidden message from LPTX on CRC
No prior anti-VEGF therapy: Patients in the Experimental Arm (n=49) had an ORR of 51%, compared to 29% ORR in the Control Arm (n=45)
Prior anti-EGFR therapy: Patients in the Experimental Arm (n=28) had an ORR of 54%, compared to 27% ORR in the Control Arm (n=22)
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NY1972 NY1972 4 weeks ago
To be deleted by ADR?
Exhausted T cells, typically arising from chronic antigen stimulation in the tumor microenvironment (TME), may express activation-induced costimulatory receptors like 4-1BB alongside inhibitory receptors
exhausted T cells are not actively immunosuppressive like Tregs. Their role is more of a failure to sustain effective anti-tumor responses rather than actively suppressing other immune cells. However, their presence in large numbers can create a functionally "tolerant" immune environment that indirectly benefits the tumor.
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NY1972 NY1972 1 month ago
The key to success is CXCR2 and 1xx for FATE CART. MSK 1xx CD19 auto trial showed ORR at 25M cells dose, so trogocytosis, persistence and proliferation must be optimal to be effective.
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jondoeuk jondoeuk 1 month ago
One of the potential downsides of inhibiting (CD16(a)) shedding is that it could slow NK detachment and reduce serial killing https://rupress.org/jcb/article/217/9/3267/120862/Shedding-of-CD16-disassembles-the-NK-cell-immune

It was shown some years ago that CD64 binds to the same IgGs, but with at least 2-3 orders of magnitude higher affinity than CD16(a). Based on that data, I think they should switch to using it and look to add additional modifications https://jhoonline.biomedcentral.com/articles/10.1186/s13045-023-01455-z

They (and others) need to learn from the (early) mistakes of FATE.
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jondoeuk jondoeuk 1 month ago
Trogocytosis can impact both CAR-T, as well as CAR-NK therapies. Strategies to overcome trogocytosis-induced antigen loss, fratricide and/or cell exhaustion include, pharmacological targeting, modulating CAR affinity, ''armouring,'' modulating the signalling domain(s), or using a dual CAR strategy. Some preclinical data on the latter https://www.nature.com/articles/s41591-022-02003-x
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NY1972 NY1972 1 month ago
The functional effects of trogocytosis remain to be elucidated, however, it has been shown to interfere with successful CAR-mediated antitumor responses as it promotes tumor antigen escape as well as CAR T cell dysfunction due to fratricide killing
https://jitc.bmj.com/content/11/2/e005691
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NY1972 NY1972 1 month ago
This study was done without ADCC.

expression of CXCR2 in CAR-T cells can significantly improve these T cell migrating to the tumor microenvironment of hepatocellular carcinoma, which provides the strong evidence to support that CXCR2 is of great potential to be utilized in CAR-T cell therapies for various solid tumors.

https://onlinelibrary.wiley.com/doi/full/10.1002/eji.201948457?utm_source=chatgpt.com
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jondoeuk jondoeuk 1 month ago
Both follow LD chemo in Cycle 1 (each cycle is approximately 61 days). Based on the safety, tolerability, and radiographically confirmed clinical benefit to treatment (in Cycle 1), participants may be considered for an additional treatment cycle (Cycle 2 retreatment).
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jondoeuk jondoeuk 1 month ago
NEUK201-00* is being tested in advanced/metastatic solid tumours at a single site.



* It could be an iNK with just a high-affinity non-cleavable CD16(a) receptor, but this comes from a Chinese site that has undergone translation. The IL-2 dose is intermediate.
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NY1972 NY1972 1 month ago
ADCC will lead to higher expression of CXCL8 by innate cells which will lead to more FT825 into TME. The combo trial will be a game changer. What is the dosing schedule for cetuximab?
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jondoeuk jondoeuk 1 month ago
Translational data from the PhI B-cell lymphomas trial demonstrated primary, secondary and tertiary tissue trafficking and clearance of CD19+ cells. That should help enable an immune reset in autoimmune diseases.

The next-gen CAR-T's will incorporate a suite of novel synthetic edits that are designed to enhance homing and biodistribution to secondary and tertiary tissues.
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jondoeuk jondoeuk 1 month ago
I hope they will pick up the pace with enrolment. It can't be as slow as last year.
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jondoeuk jondoeuk 1 month ago
Shoreline has let go of an undisclosed number of employees tied to a cell therapy project with GILD's Kite Pharma, Endpoints News reported. Shoreline CEO declined to disclose the number of workers that were laid off and said the future of the collaboration is still ''to be determined.''

The two had agreed to change the focus of their partnership. Instead of developing a CAR-iNK cell therapy for B-cell lymphomas (either CD19-targeted or CD19/CD20-targeted), they switched to autoimmune diseases. Shoreline already had a pre-IND meeting with the FDA and was recruiting US and international clinical trial sites for a PhI trial in autoimmune diseases. They were going to enter the clinic in the coming months and planned to give Kite the possibility of opting in after concluding the trial.

As Kite went through leadership changes in recent years, Shoreline's CEO said the two had a ''wonderful collaboration,'' including being aligned with the new [autoimmune] focus for that therapy. They agreed on ''90%'' of the terms in an adjusted deal, including another potential equity investment from GILD, but they couldn't come to an agreement on any ''back-end economics.'' Shoreline believed it deserved a ''larger portion on [the] upside.''
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NY1972 NY1972 2 months ago
Pipe valued at 10% of paid in capital. A CART that follows the chemotactic gradient to TME is free today.
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NY1972 NY1972 2 months ago
Ft825 - 4 more sites added
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NY1972 NY1972 2 months ago
FT819 can act as a ligand sink and change DC/CD8, NLR ratios in 2nd lymphoid and inflammed tissues. Creating a new Bronx so to speak.

CXCR4 is critical for the organization of secondary lymphoid tissues, such as lymph nodes and spleen, where immune responses are initiated.
Dysregulation of CXCR4 signaling may contribute to abnormal germinal center reactions and the development of autoreactive immune cells.
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jondoeuk jondoeuk 2 months ago
Maybe they thought that better penetration into the bone marrow could allow for greater effectiveness in targeting certain types, such as B-ALL. CXCR4 is critical for bone marrow homing of T-cells https://onlinelibrary.wiley.com/doi/10.1002/eji.201747438 https://journals.aai.org/jimmunol/article/193/3/1013/108777/Cutting-Edge-CXCR4-Is-Critical-for-CD8-Memory-T

I know they have a patent for hematopoietic stem or progenitor cells being contacted with an agent that increases CXCR4 gene expression in the cells.

However, the iTs (that are either contacted with that agent or not) express high levels of Fas https://www.jci.org/articles/view/121491 https://www.nature.com/articles/s41467-017-00784-1 https://www.nature.com/articles/nm.3541

To overcome it, this was created https://aacrjournals.org/cancerres/article/84/6_Supplement/3995/740628/Abstract-3995-A-novel-chimeric-Fas-signal-redirect
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NY1972 NY1972 2 months ago
Why FT819 has high CXCR4 expression?
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NY1972 NY1972 2 months ago
Rearranging the deck.
Follicular structures were disrupted and FDCs were depleted in the lymph nodes after CD19-CAR T-cell therapy, but not after RTX
Let see if FT825 can do the same with LD and Cetuximab.
https://ard.bmj.com/content/annrheumdis/early/2024/09/11/ard-2024-226142.full.pdf
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NY1972 NY1972 2 months ago
The key is in CART and neutrophil interactions within the draining lymph nodes. Neutrophils build TME and suppress CD8+ /NK via Treg. For the primary tumor, CART will need mAb to deal with antigen escape.

https://aacrjournals.org/cancerrescommun/article/4/2/588/734969/Characterizing-Neutrophil-Subtypes-in-Cancer-Using
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jondoeuk jondoeuk 2 months ago
I want to say one of two, but can't remember off the top of my head.
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jondoeuk jondoeuk 2 months ago
Metastatic cancer cells can develop multiple (suppressive) mechanisms that enable the evasion of NKs, such as this https://www.cell.com/cell-reports/fulltext/S2211-1247(24)01206-3

In one patent the same group goes on to show that EP2/EP4 KO enables the NKs to secrete chemokines, such as XCL1 that recruit key immune cell populations required for T-cell mediated tumour immunity https://www.cell.com/cell/fulltext/S0092-8674(18)30039-4

In another paper, a different group identifies IGSF8 as a new immune checkpoint that suppresses NKs (and dendritic cells) in antigen presentation deficient cancer cells https://www.cell.com/cell/abstract/S0092-8674(24)00355-6

So I think the right combination of edits will be needed to overcome trafficking, infiltration, potency, expansion, persistence, while also preventing exhaustion/dysfunction, suppression, tackle antigen heterogeneity and evasion.
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NY1972 NY1972 2 months ago
Which other bios have CART with CXCR2? That feature is critical after lymphodepletion causing BM suppression for 2 weeks.
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NY1972 NY1972 2 months ago
Sounds like what one would find in SLE, cancer pts with a reset immune system.

?d T-cell proliferation was dependent upon CD137L expression on aAPC and addition of exogenous IL2 and IL21. Propagated ?d T cells were polyclonal
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jondoeuk jondoeuk 2 months ago
For many, many years the focus was on the Vd2 subset, but recent evidence in multiple tumours showed associations of other subsets (Vd1 and/or Vd3) with increased patient survival and/or clinical benefit https://www.nature.com/articles/s43018-022-00376-z https://www.science.org/doi/10.1126/scitranslmed.aax9364

There is also preclinical data which show that the Vd1 subset has superior cytotoxicity over Vd2 https://aacrjournals.org/clincancerres/article/20/22/5708/117332/Activating-and-Propagating-Polyclonal-Gamma-Delta
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NY1972 NY1972 2 months ago
NK is fine for SLE since the depletion of the memory B cells is the goal. For solid, creating polyclonal T cells with memory phenotype is the key for OR duration.
From ChatGPT:
Studies with 1XX CAR T cells highlight their enhanced capacity for cytokine production and survival, suggesting a stronger potential for interaction with and modulation of DCs compared to conventional CAR T cells. Dendritic cells in the TME can process these antigens and cross-prime endogenous T cells against TAAs, creating a polyclonal immune response that complements the CAR T-cell activity.
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jondoeuk jondoeuk 2 months ago
They should get a B7-H3 CAR into the clinic https://www.oncologypipeline.com/apexonco/fourth-challenger-dualitybio-and-biontech

Based on preclinical data targeting the IgC domain is more effective https://www.nature.com/articles/s41467-023-41631-w
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jondoeuk jondoeuk 2 months ago
Unlike NKs, the differentiation of T-cells from iPSCs is (far) more complex. Also, the NKs from iPSCs are more comparable functionality to PB/CB NKs, and can kill independent from the CAR.

It would make sense to test the two https://aacrjournals.org/cancerimmunolres/article/7/3/363/469550/NK-Cells-Expressing-a-Chimeric-Activating-Receptor

But there are still hurdlers (for the NKs) to overcome, including persistence and lack of expansion. The use of an IL15-RF may impair NK functions as well https://insight.jci.org/articles/view/96219 https://www.pnas.org/doi/10.1073/pnas.1012128107
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NY1972 NY1972 2 months ago
1xx, autologous T cells and lactate
https://pmc.ncbi.nlm.nih.gov/articles/PMC11588660/
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NY1972 NY1972 2 months ago
SP from 100 to 1 while revamped pipeline from 1 to 100
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NY1972 NY1972 2 months ago
CEO was pretty bullish on 825 + cetuximab. I think Ig1 is as effective as TCE as it activates the innate arm.
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jondoeuk jondoeuk 2 months ago
FT825 would require an additional receptor https://ashpublications.org/blood/article/140/Supplement%201/7429/491146/A-CD3-Fusion-Receptor-CD3-FR-Uniquely-Enables
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NY1972 NY1972 2 months ago
Failure to revive old cells
https://www.merck.com/news/merck-provides-update-on-keyvibe-and-keyform-clinical-development-programs-evaluating-investigational-vibostolimab-and-favezelimab-fixed-dose-combinations-with-pembrolizumab/
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NY1972 NY1972 2 months ago
FATE revamped it's cell to deal with TME. Yet the SP is 1.8% of what it used to be. 95% investors were in it for ride because J&J was on board. They had little understanding of science.
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