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DRUG CLASS:

SYK inhibitor

1d
Chronic Eosinophilic Leukemia Presenting as Treatment-Refractory Nodular Scleritis: A Paraneoplastic Autoimmune Syndrome With Multisystem Inflammatory Manifestations. (PubMed, Cureus)
A 25-year-old woman with pre-existing Hashimoto's thyroiditis developed progressive bilateral nodular scleritis with anterior uveitis that proved completely refractory to high-dose corticosteroids, methotrexate, and conventional disease-modifying antirheumatic drugs, along with papilledema and granulomatous rosacea, suggesting systemic inflammation. Recognition of this molecular target enabled precision therapy with fostamatinib, a spleen tyrosine kinase (Syk) inhibitor, combined with adalimumab, a tumor necrosis factor-alpha (TNF-α) inhibitor, resulting in complete and sustained remission of all inflammatory manifestations over 18 months of follow-up. This case underscores the critical importance of maintaining high clinical suspicion for paraneoplastic autoimmune syndromes in patients with treatment-refractory inflammatory conditions, particularly when accompanied by atypical systemic or unexplained laboratory findings, and demonstrates that molecularly targeted precision medicine approaches can transform treatment outcomes in complex paraneoplastic rheumatic disorders.
Journal
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ETV6 (ETS Variant Transcription Factor 6) • SYK (Spleen tyrosine kinase)
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methotrexate • Tavalisse (fostamatinib)
5d
Metabolomics profiling of acute myelogenous leukemia patients to identify systemic differences associated with in vitro sensitivity to SYK inhibitors. (PubMed, Metabolomics)
This study highlights potential metabolite signatures associated with in vitro SYK-targeted therapy in AML. These findings support future research to identify potential serum biomarkers, guiding personalized SYK inhibition strategies in AML.
Preclinical • Journal • Metabolomic study
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FLT3 (Fms-related tyrosine kinase 3) • SYK (Spleen tyrosine kinase)
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entospletinib (GS-9973) • mivavotinib (CB-659) • Tavalisse (fostamatinib)
12d
Tuspetinib enhances the activity of polymyxin B by inhibiting the GlcNAc6P deacetylase. (PubMed, J Antibiot (Tokyo))
Finally, we demonstrated the efficacy of TUS plus PMB therapy in a mouse model of pulmonary infection with a clinical PMB-resistant K. pneumoniae isolate. In all, this work discovers a promising drug combination strategy based on PMB and TUS and underlies the special mode of action that involves inhibiting the activity of NagA.
Journal
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FLT3 (Fms-related tyrosine kinase 3)
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tuspetinib (HM43239)
15d
Perioperative Fostamatinib With Gemcitabine and Nab-paclitaxel in Resectable Pancreatic Cancer (clinicaltrials.gov)
P1, N=36, Recruiting, University of California, San Diego | Trial primary completion date: Jun 2027 --> Dec 2027
Trial primary completion date
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gemcitabine • albumin-bound paclitaxel • Tavalisse (fostamatinib)
22d
A phase I open label study of fostamatinib, a SYK inhibitor, in patients with lower-risk myelodysplastic syndrome and chronic myelomonocytic leukemia. (PubMed, Leuk Lymphoma)
Lower-risk myelodysplastic syndromes (MDS) and chronic myelomonocytic leukemia (CMML) are commonly managed with erythropoiesis-stimulating agents, luspatercept, or hypomethylating agents. There were no dose-limiting toxicities. Although safe, fostamatinib demonstrated no clinical benefit, underscoring the need for alternative strategies to modulate inflammatory signaling in MDS/CMML.
P1 data • Journal
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SYK (Spleen tyrosine kinase)
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Reblozyl (luspatercept-aamt) • Tavalisse (fostamatinib)
26d
PHF23-Related Prognostic Signature Modulates Immune Microenvironment and Promotes Tumor Malignancy in Glioma. (PubMed, Int J Mol Sci)
Our results identify PHF23 as a critical oncogenic driver in glioma and support the PHF23-RPS for risk stratification. Entospletinib may offer a potential immunomodulatory option for high-risk gliomas.
Journal • Tumor mutational burden
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TMB (Tumor Mutational Burden)
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entospletinib (GS-9973)
1m
wAIHA: HMPL-523 (Sovleplenib) in the Treatment of Warm Antibody Autoimmune Hemolytic Anemia (clinicaltrials.gov)
P2/3, N=110, Active, not recruiting, Hutchison Medipharma Limited | Trial primary completion date: Sep 2026 --> Nov 2025 | Recruiting --> Active, not recruiting
Enrollment closed • Trial primary completion date
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sovleplenib (HMPL-523)
2ms
FLT3-SYK inhibitor and Ixazomib combination impact HOXA and oxidative stress control by β-catenin, SQSTM1 and NRF2 in AML. (PubMed, NPJ Precis Oncol)
Dual targeting of FLT3/SYK (TAK-659) and the proteasome (Ixazomib) showed strong synergy across genetically defined AML subsets, irrespective of FLT3 mutant status. These findings define a therapeutically targetable axis linking FLT3/SYK/β-catenin signaling to stress adaptation, provide a mechanistic basis for combinatorial targeting in high-risk AML. Trial registration: NCT04079738, Date of registration 03 September 2019.
Journal
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FLT3 (Fms-related tyrosine kinase 3) • TET2 (Tet Methylcytosine Dioxygenase 2) • CTNNB1 (Catenin (cadherin-associated protein), beta 1) • PTPRC (Protein Tyrosine Phosphatase Receptor Type C) • SQSTM1 (Sequestosome 1) • HOXA9 (Homeobox A9) • SYK (Spleen tyrosine kinase) • JUN (Jun proto-oncogene)
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FLT3-ITD mutation • FLT3 mutation • TET2 mutation
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Ninlaro (ixazomib) • mivavotinib (CB-659)
2ms
Trial completion
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sovleplenib (HMPL-523)
2ms
Pharmacokinetics and Bioequivalence Study of HMPL-523 Acetate Tablets in Humans (clinicaltrials.gov)
P1, N=54, Completed, Hutchmed | Recruiting --> Completed | Trial primary completion date: Feb 2026 --> Nov 2025
Trial completion • Trial primary completion date
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sovleplenib (HMPL-523)
3ms
FOSTA-ARDS: Fostamatinib for Treating Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Adults (clinicaltrials.gov)
P2, N=40, Not yet recruiting, Inova Health Care Services | Trial completion date: Oct 2026 --> Oct 2027 | Trial primary completion date: May 2026 --> May 2027
Trial completion date • Trial primary completion date
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Tavalisse (fostamatinib)
3ms
New P1 trial
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sovleplenib (HMPL-523)