- |||||||||| Chimeric Antigen Receptor T Cell Therapy for Acute Myeloid Leukemia (World Center Marriott - Palms & Cypress Foyers) - Jan 14, 2020 - Abstract #TCTASTCTCIBMTR2020TCT_946;
Finally, to find the best combination of CARs that would be less toxic to HSCs, we performed a Colony Forming Unit (CFU) assay with CD34+ bone marrow stem cells and found 5 bi-specific pairs that were less toxic to HSCs . Based on the CFU assay and PSI index, we were able to select the combination of CD33/123 scFvs that would target AML but minimize the killing of HSCs.
- |||||||||| Preclinical, Journal: Repression of phagocytosis by human CD33 is not conserved with mouse CD33. (Pubmed Central) - Jan 13, 2020
Moreover, transgenic mice expressing hCD33 in the microglial cell lineage showed repressed cargo uptake in primary microglia. Therefore, mCD33 and hCD33 have divergent roles in regulating phagocytosis, highlighting the importance of studying hCD33 in AD susceptibility.
- |||||||||| Journal: Curcumin restores innate immune Alzheimer's disease risk gene expression to ameliorate Alzheimer pathogenesis. (Pubmed Central) - Jan 11, 2020
Like curcumin, anti-Aβ antibody (also reported to engage the Syk pathway, increase CD68, and decrease amyloid burden in human and mouse brain) increased TREM2 in APPsw mice and decreased amyloid in human AD sections ex vivo. We conclude that curcumin is an immunomodulatory treatment capable of emulating anti-Aβ vaccine in stimulating phagocytic clearance of amyloid by reducing CD33 and increasing TREM2 and TyroBP, while restoring neuroinflammatory networks implicated in neurodegenerative diseases.
- |||||||||| [VIRTUAL] Microglial ITAM and ITIM Immunoreceptors as Therapeutic Targets for Alzheimer's Disease (Hall F2) - Jan 6, 2020 - Abstract #AATADPD2020AAT_ADPD_303;
Conclusions Our results suggest that TREM2 activity may be protective in both the early, β-amyloidogenic stage of AD and the later stages involving tau spreading and neurodegeneration. Our Pilra and Cd33 studies, and our characterization of human AD microglia, highlight the need for improved models of AD pathogenesis with better conservation of human microglial biology.
- |||||||||| Mylotarg (gemtuzumab ozogamicin) / UCB, PDL, Pfizer
Review, Journal: Novel monoclonal antibody-based therapies for acute myeloid leukemia. (Pubmed Central) - Jan 4, 2020 Over the last several years, work to improve the success of monoclonal antibody-based therapies in AML has focused on the identification and exploration of new antigen targets as much as on the development of novel treatment formats such as use of unconjugated engineered monoclonal antibodies and conjugated antibodies, delivering highly potent small molecule drugs or radionuclides to AML cells. Here, we will provide a brief overview of current efforts with such investigational monoclonal antibody-based therapeutics.
- |||||||||| Venclexta (venetoclax) / Roche, AbbVie
Review, Journal: Venetoclax-based therapies for acute myeloid leukemia. (Pubmed Central) - Jan 4, 2020 Clinical trials have demonstrated the clinical benefit of venetoclax-based therapies in newly diagnosed AML, leading to the recent FDA approval of venetoclax in combination with hypomethylating agents or low-dose cytarabine for older adults with newly diagnosed AML. Herein, we focus on the role of single-agent BCL-2 inhibition in AML and review the clinical studies of venetoclax-based combination regimens and the evolving mechanisms of resistance.
- |||||||||| Clinical, Journal: CML with Megakaryocytic Blast Crisis: Report of 3 Cases. (Pubmed Central) - Jan 1, 2020
The diagnosis of such rare presentation of CML is essential for determining the choice of treatment. Therefore including a megakaryocytic marker in the primary flow cytometry panel is important so that these cases are not under-diagnosed as Acute myeloid leukemia because of expression of CD13 and CD33 only.
- |||||||||| Mylotarg (gemtuzumab ozogamicin) / UCB, PDL, Pfizer
Clinical, Journal: Clinical and Radiographic Response of Extramedullary Leukemia in Patients Treated With Gemtuzumab Ozogamicin. (Pubmed Central) - Dec 28, 2019 Here we present 2 patients with CD33 EML treated with GO. They achieved significant response, with reduction of EML on both clinical and radiographic exams, specifically fluorine fluorodeoxyglucose positron emission tomography/computed tomography, demonstrating potential for targeted therapy with GO as a means of treating EML in patients with CD33 leukemia and the utility of fluorine fluorodeoxyglucose positron emission tomography/computed tomography monitoring in EML.
- |||||||||| Journal: CD33 (Siglec-3) Inhibitory Function: Role in the NKG2D/DAP10 Activating Pathway. (Pubmed Central) - Dec 20, 2019
CD33-mediated inhibition of NKG2D-induced triggering involved Vav1 dephosphorylation. Our results support the role of CD33 as an inhibitory receptor preferentially regulating the NKG2D/DAP10 cytotoxic signaling pathway, which could be involved in self-tolerance and tumor and infected cell recognition.
- |||||||||| Review, Journal: What is recommended in the treatment of acute myeloid leukemia? (Pubmed Central) - Dec 19, 2019
Among these drugs are the Bcl‑2 inhibitor venetoclax, which is already approved in Germany for chronic lymphatic leukemia, as well as IDH1/IDH2 inhibitors (the latter for patients with IDH1/IDH2 mutated AML). Acute promyelocytic leukemia represents a special type of AML that should be treated with a combination of all-trans retinoic acid and arsenic trioxide leading to excellent outcome.
- |||||||||| Preclinical, Journal: Repression of phagocytosis by human CD33 is not conserved with mouse CD33. (Pubmed Central) - Dec 10, 2019
Moreover, transgenic mice expressing hCD33 in the microglial cell lineage showed repressed cargo uptake in primary microglia. Therefore, mCD33 and hCD33 have divergent roles in regulating phagocytosis, highlighting the importance of studying hCD33 in AD susceptibility.
- |||||||||| Biomarker, Journal, PARP Biomarker, PD(L)-1 Biomarker, IO biomarker: Cancer biomarkers for targeted therapy. (Pubmed Central) - Dec 8, 2019
To reduce and avoid off-tumor toxicities, cancer-specific TAAs such as CD33 are being manufactured through systems biology approach. Search for novel biomarkers and new designs as well as delivery methods of targeted agents are fueling the next wave of advances in cancer therapy.
- |||||||||| Journal, PD(L)-1 Biomarker, IO Biomarker: Cytometry TOF identifies alveolar macrophage subtypes in acute respiratory distress syndrome. (Pubmed Central) - Dec 6, 2019
In an independent cohort of subjects with ARDS, PD-L1 gene expression and PD-L1/PD-1 pathway-associated gene sets were significantly decreased in AMs from patients who experienced prolonged mechanical ventilation or death. Unsupervised CyTOF analysis of alveolar leukocytes from human subjects has potential to identify expected and potentially novel myeloid populations that may be linked with clinical outcomes.
- |||||||||| IL-17 and Th17 in melanoma outcome () - Nov 21, 2019 - Abstract #SMR2019SMR_231;
Our studies affirm a difference between IL-17 expression and Th17 cells in melanoma patients. The high degree of plasticity, known to occur in Th17 cells, is likely an important factor, and may be exploited for synergy with immunotherapy.
- |||||||||| Clinical, Journal: Clinical Features and Prognosis of 188 Patients with Acute Myeloid Leukemia-M (Pubmed Central) - Nov 18, 2019
The high degree of plasticity, known to occur in Th17 cells, is likely an important factor, and may be exploited for synergy with immunotherapy. The clinical characteristics are different between M patients with different karyotype, and prognostic analysis shows that the karytypes have an impact on overall survival; age, extramedullary infiltration, CD19 expression and CEBPA double mutation are also the main factors impacting the prognosis of patients.
- |||||||||| Flow on the AML showed 75.3% myeloblasts expressing CD7, CD11b, CD13, CD33, CD34, CD38, CD45, CD117(dim), CD123, HLA-DR, and MPO (Twitter) - Nov 14, 2019
- |||||||||| Journal: Whole-exome sequencing of the BDR cohort: Evidence to support the role of the PILRA gene in Alzheimer's disease. (Pubmed Central) - Nov 11, 2019
The clinical characteristics are different between M patients with different karyotype, and prognostic analysis shows that the karytypes have an impact on overall survival; age, extramedullary infiltration, CD19 expression and CEBPA double mutation are also the main factors impacting the prognosis of patients. In addition, polygenic risk scores (PRS) were able to distinguish between cases and controls with 83.8% accuracy using 3,268 variants, sex, age at death and APOE ε4 and ε2 status as predictors.
- |||||||||| Mylotarg (gemtuzumab ozogamicin) / UCB, PDL, Pfizer
Novel CD33 Antibodies Unravel Localization, Biology, and Therapeutic Implications of CD33 Isoforms (W308, Level 3 (Orange County Convention Center)) - Nov 7, 2019 - Abstract #ASH2019ASH_6574; Subsequent staining with P67.6 only produced a positive signal in BaF3-CD33FLGFP cells while BaF3-CD33D2GFP, which lack the IgV domain, were negative (Figure 2B) . Interestingly both novel IgC targeting antibodies, 5C11-2 and HL2541, only stained positive for BaF3-CD33D2GFP cells and were negative for BaF3-CD33FL cells (Figure 2C) .
- |||||||||| Mylotarg (gemtuzumab ozogamicin) / UCB, PDL, Pfizer
BrUOG 345: Fractionated Gemtuzumab Ozogamicin Followed By Non-Engraftment Donor Leukocyte Infusions for Relapsed/Refractory Acute Myeloid Leukemia (Hall B, Level 2 (Orange County Convention Center)) - Nov 7, 2019 - Abstract #ASH2019ASH_6210; P2 Secondary outcomes will include survival, both progression-free (PFS) and overall (OS) until two years post treatment, and dose limiting toxicities until 16 weeks post-infusion . Additional lab correlative studies will be performed including CD33 expression before, during, and after GO infusion and T-cell activation markers, antigen presenting cell/macrophage amounts, cytokine release profiles, and extracellular vesicle measurements (Figure 1).
- |||||||||| High-Throughput RNA Sequencing Analysis Reveals Distinct Molecular Signature in NRAS and PTPN11 JMML Patients (Hall B, Level 2 (Orange County Convention Center)) - Nov 7, 2019 - Abstract #ASH2019ASH_5971;
Differences in the expression of microRNAs subsets, LIN28B and subunits of the HbA and HbF already described in JMML, but here related to specific mutations and cell lineages, could help to better understand the pathogenic processes and peculiar clinical behaviors . Finally, the novel evidence of differential RNA editing in JMML opens new perspectives for further studies regarding differential protein isoforms expression and regulation as well as microRNA targeting.
- |||||||||| Mylotarg (gemtuzumab ozogamicin) / UCB, PDL, Pfizer
Phenotypic Characterization of Leukemia-Initiating Stem Cells in Chronic Myelomonocytic Leukemia (CMML) (Hall B, Level 2 (Orange County Convention Center)) - Nov 7, 2019 - Abstract #ASH2019ASH_5965; To confirm the clinical relevance of expression of surface target antigens on CMML LSC, we applied the CD33-targeted drug gemtuzumab-ozogamicin (GO)...During progression of CMML into sAML, LSC apparently acquire CD25 . Characterization of CMML LSC and LSC in sAML should facilitate their enrichment and the development of LSC-eradicating therapies.
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