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Spebrutinib (AVL-292) is an orally available and highly selective covalent inhibitor of Bruton's tyrosine kinase (Btk) that is currently undergoing Phase 1b clinical development for CLL and B-NHL. AVL-292 selectively and covalently bonds to Btk to inactivate and silence its activity. Spebrutinib (AVL-292) inhibited osteoclast function and reduced osteoclast-stimulated proliferation of MM cells. Spebrutinib (AVL-292) was well tolerated from 125-400 mg po QD and early efficacy analysis in CLL and B-NHL shows 10/11 efficacy evaluable pts with SD. The ongoing phase Ib clinical trial of AVL-292 is being conducted in patients with B-cell malignancies, including B-cell NHL, CLL, and WM.
Cell Experiment | |
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Cell lines | naïve human B cells |
Preparation method | Immunoblot Analysis. Cells were incubated in serum-free RPMI media for 1–1.5 hours. Isolated human B cells were incubated with CC-292 at a final concentration of 0.001, 0.01, 0.1 and 1 μM. Ramos cells were incubated with 0.1 nM–3 μM CC-292. Cells were then incubated in the presence of compound for 1 hour at 37°C. Following incubation, cells were centrifuged and resuspended in 100 μl of serum-free RPMI and BCR was stimulated with addition of 5 μg/ml α-human IgM. Samples were centrifuged, washed in phosphate-buffered saline (PBS), and lysed in 100 μl of Cell Extraction Buffer plus 1:10 (v/v) PhosSTOP Phosphatase Inhibitor and 1:10 (v/v) Complete Protease Inhibitor. Antibodies used for immunoblot analysis include P-PLCγ2, PLCγ2, Syk, P-Syk, Btk, P-Btk, and Tubulin. Membranes were scanned on a Li-Cor Odyssey scanner using infrared fluorescence detection. |
Concentrations | 0.001, 0.01, 0.1 and 1 μM |
Incubation time | 1h |
Animal Experiment | |
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Animal models | Collagen-Induced Arthritis Model |
Formulation | not mentioned |
Dosages | 10,30,50 mg/kg |
Administration | oral |
Molecular Weight | 423.44 |
Formula | C22H22FN5O3 |
CAS Number | 1202757-89-8 |
Solubility (25°C) | DMSO 60 mg/mL |
Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
[1] Danilo De Novellis, et al. The TKI Era in Chronic Leukemias
[2] Emanuela Grassilli, et al. p65BTK Is a Novel Biomarker and Therapeutic Target in Solid Tumors
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