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Title: | Preliminary Results from a Phase I Study of HMPL-523, a Selective, Oral Syk Inhibitor, in Patients with Relapsed or Refractory Lymphoma |
Presenter: | Paolo Strati, MD, The University of Texas MD Anderson Cancer Center |
Session: | 623. Mantle Cell, Follicular, and Other Indolent B Cell Lymphomas: Clinical and Epidemiological: Poster II |
Abstract No.: | 2432 |
Date & Time: | Sunday, December 12, 2021 6:00pm – 8:00pm ET |
Location: | Georgia World Congress Center, Hall B5 and virtually |
As of data cutoff date of August 25, 2021, 21 patients received a median of two cycles of treatment (range: 1-19). Among 16 response-evaluable patients, 4 responses were seen in patients in the 400-800 mg cohorts totaling 10 patients. Nine patients experienced disease progression, three in the 400-800mg cohorts and six in the 100-200mg cohorts.
Among 21 enrolled patients, 17 (81.0%) patients experienced TRAEs, including 7 (33.3%) who experienced grade 3 or above TRAEs. Specific to TRAE at grade 3 or above, neutropenia, which occurred in 2 patients, was the only TRAEs of grade 3 or above to have occurred in more than one patient. SAEs were reported in 6 patients (28.6%). Adverse events leading to discontinuation were reported in 2 (9.5%) patients. 7 patients withdrew from the study for reasons other than progressive disease.
These results support progressing HMPL-523 into the ongoing dose expansion phase of the study to evaluate its safety and efficacy in multiple subtypes of B-cell and T-cell lymphoma at the R2PD of 700 mg.
About HMPL-523
HMPL-523 is a novel, investigational, selective small molecule inhibitor for oral administration targeting spleen tyrosine kinase, also known as Syk. Syk is a major component in B-cell receptor signaling and is an established target for the treatment of multiple subtypes of B-cell lymphomas and autoimmune disorders.
HUTCHMED currently retains all rights to HMPL-523 worldwide. The ESLIM-01 Phase III trial is underway to evaluate the efficacy and safety of HMPL-523 in treating adult patients with primary ITP, an autoimmune disorder that can lead to increased risk of bleeding. Additional details may be found at clinicaltrials.gov, using identifier NCT05029635. HMPL-523 is also being studied in indolent non-Hodgkin’s lymphoma and multiple subtypes of B-cell malignancies in China (NCT02857998), the U.S. and Europe (NCT03779113). A trial to study HMPL-523 in patients with warm autoimmune hemolytic anemia (wAIHA), another autoimmune disorder, is also planned.
About HUTCHMED
HUTCHMED (Nasdaq/AIM: HCM; HKEX:13) is an innovative, commercial-stage, biopharmaceutical company. It is committed to the discovery and global development and commercialization of targeted therapies and immunotherapies for the treatment of cancer and immunological diseases. It has more than 4,500 personnel across all its companies, at the center of which is a team of over 1,400 in oncology/immunology. Since inception it has advanced eleven cancer drug candidates from in-house discovery into clinical studies around the world, with its first three oncology drugs now approved and marketed in China. For more information, please visit: www.hutch-med.com or follow us on LinkedIn.
Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect HUTCHMED’s current expectations regarding future events, including its expectations regarding the therapeutic potential of HMPL-523 for patients, its expectations as to whether any studies on HMPL-523 would meet their primary or secondary endpoints, and its expectations as to the timing of the completion and the release of results from such studies. Forward-looking statements involve risks and uncertainties. Such risks and uncertainties include, among other things, assumptions regarding enrollment rates and the timing and availability of subjects meeting a study’s inclusion and exclusion criteria; changes to clinical protocols or regulatory requirements; unexpected adverse events or safety issues; the ability of HMPL-523, including as a combination therapy, to meet the primary or secondary endpoint of a study, to obtain regulatory approval in different jurisdictions and to gain commercial acceptance after obtaining regulatory approval; the potential market of HMPL-523 for a targeted indication; the sufficiency of funding; and the impact of the COVID-19 pandemic on general economic, regulatory and political conditions. Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. For further discussion of these and other risks, see HUTCHMED’s filings with the U.S. Securities and Exchange Commission, The Stock Exchange of Hong Kong Limited and on AIM. HUTCHMED undertakes no obligation to update or revise the information contained in this press release, whether as a result of new information, future events or circumstances or otherwise.
