HUTCHMED Highlights Sovleplenib ESLIM-02 Phase III Data in Warm Antibody Autoimmune Hemolytic Anemia Presented at EHA 2026 Congress
Rhea-AI Summary
HUTCHMED (Nasdaq:HCM) reported Phase III ESLIM-02 data for sovleplenib in warm antibody autoimmune hemolytic anemia (wAIHA). The 90-patient China study met its primary endpoint, with a 66% durable hemoglobin response vs 15% on placebo, and showed reduced rescue therapy, transfusions and steroid use, with a favorable safety profile.
An NDA for wAIHA has been accepted and granted priority review and Breakthrough Therapy Designation by China’s NMPA.
AI-generated analysis. How Rhea-AI works. Not financial advice.
Positive
- Durable hemoglobin response 66% on sovleplenib vs 15% on placebo (p<0.0001)
- Overall response rate 70% vs 22%, median time to response 3.1 vs 6.3 weeks
- Rescue therapy use 16% vs 54%; red blood cell transfusions 11% vs 43%
- 50% of patients tapered or discontinued glucocorticoids/other therapies vs 15%
- Durable response rate 69% vs 16% in prior-rituximab subgroup (p=0.0022)
- China NMPA accepted NDA and granted priority review and Breakthrough Therapy Designation
Negative
- Grade ≥3 treatment-emergent adverse events in 43% on sovleplenib vs 59% on placebo
- Grade ≥3 warm autoimmune hemolytic anemia still occurred in 18% of sovleplenib patients
News Market Reaction – HCM
On the day this news was published, HCM gained 2.62%, reflecting a moderate positive market reaction.
Data tracked by StockTitan Argus on the day of publication.
Key Figures
Previous Clinical trial Reports
| Date | Event | Sentiment | 24h Move | Catalyst |
|---|---|---|---|---|
| May 21 | ASCO data preview | Positive | -0.4% | Highlighted multiple positive clinical datasets for ASCO, including pivotal savolitinib. |
| Mar 22 | Phase III initiation | Positive | +0.4% | Started registrational Phase III HMPL-760 trial in relapsed/refractory DLBCL in China. |
| Jan 13 | Phase III publication | Positive | +2.3% | Phase III SACHI trial results published in The Lancet confirming MET inhibition benefit. |
| Jan 06 | ESLIM-02 topline | Positive | +6.6% | Phase III ESLIM-02 sovleplenib topline met durable hemoglobin response primary endpoint. |
| Jan 04 | Phase III upgrade | Positive | -2.0% | Initiated Phase III stage of surufatinib + camrelizumab combo in pancreatic cancer. |
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Clinical updates are generally positive, but price reactions are mixed, with both rallies and selloffs following favorable data.
Over the last few months, HUTCHMED has issued multiple clinical trial updates across its pipeline, including Phase III data for sovleplenib in wAIHA and other late‑stage programs like SACHI and surufatinib combinations. Reactions ranged from a 6.62% gain on positive ESLIM‑02 topline data (Jan 6, 2026) to declines after other favorable readouts. Today’s detailed ESLIM‑02 EHA presentation fits this pattern of strong data against a volatile trading backdrop.
Historical Comparison
In the past year, HCM’s 5 clinical-trial headlines saw an average move of 1.38%. Today’s -1.75% pre-news level sits at the weaker end of those outcomes despite strong ESLIM-02 data.
Clinical-trial news shows steady advancement from Phase III initiations and pivotal readouts to peer-reviewed publications and detailed conference presentations, including sovleplenib’s evolution from topline ESLIM-02 results to full EHA data.
Regulatory & Risk Context
Key Terms
phase iii medical
new drug application regulatory
priority review regulatory
breakthrough therapy designation regulatory
randomized, double blind, placebo-controlled technical
treatment-emergent adverse events medical
hemoglobin medical
red blood cell transfusion medical
AI-generated analysis. How Rhea-AI works. Not financial advice.
— Sovleplenib demonstrated rapid and durable hemoglobin response with favorable safety profile —
—The ESLIM-02 study underscores sovleplenib’s potential to address critical unmet needs in a treatment landscape currently devoid of approved targeted therapies —
HONG KONG and SHANGHAI and FLORHAM PARK, N.J., June 12, 2026 (GLOBE NEWSWIRE) -- HUTCHMED (China) Limited (“HUTCHMED”) (Nasdaq/AIM:HCM; HKEX:13) today announces results from the Phase III part of the ESLIM-02 study of sovleplenib in patients with warm antibody autoimmune hemolytic anemia (“wAIHA”) in China were presented on Thursday, June 11, 2026 during the European Hematology Association (“EHA”) Congress in Stockholm, Sweden.
Supported by data from the ESLIM-02 study, a New Drug Application (“NDA”) for sovleplenib for the treatment of adult patients with wAIHA who have had an insufficient response to at least one previous glucocorticoid treatment has been accepted for review and granted priority review by the China National Medical Products Administration (“NMPA”) in April 2026. The NMPA granted Breakthrough Therapy Designation to sovleplenib for the treatment of wAIHA in March 2026. The ESLIM-02 presentation was selected for the official EHA Press Program.
Professor Bing Han of Peking Union Medical College Hospital, and co-leading Principal Investigator of the ESLIM-02 study, said: “The wAIHA treatment paradigm has remained stagnant for decades, with patients often trapped in a cycle of high-dose steroids and frequent relapses. The ESLIM-02 data are transformative as they demonstrate that targeting the Syk pathway can achieve both rapid and durable control of hemolysis. We are particularly encouraged by the robust data across all patient subgroups, regardless of their prior treatments. Sovleplenib’s ability to significantly reduce the need for rescue therapies and blood transfusions represents a major step forward in restoring the quality of life for these patients.”
ESLIM-02 is a randomized, double blind, placebo-controlled China Phase II/III study in adult patients with primary or secondary wAIHA who had relapsed or were refractory to at least one prior line of standard treatment (NCT05535933). Results from the Phase II part of the study were published in The Lancet Haematology in January 2025. In Phase III part of the study, 90 patients were randomized 1:1 to receive either sovleplenib (n=44) or placebo (n=46) at a dose of 300 mg once daily for 24 weeks.
The study met its primary endpoint, with sovleplenib demonstrating a significantly higher durable response rate during weeks 5–24 compared to placebo (
Median time to response was 3.1 weeks for sovleplenib versus 6.3 weeks for placebo, while the median cumulative duration of response among overall responders was 16.1 versus 6.1 weeks, respectively. Additionally, an improvement in hemolytic markers was observed with sovleplenib compared with placebo, showing an alleviation of active hemolysis.
These efficacy findings remained consistent across all sensitivity analyses, and all subgroup analyses further supported the primary endpoint results. Notably, in patients who had received prior rituximab therapy, the durable response rate continued to favor sovleplenib over placebo (
Sovleplenib demonstrated a favorable safety profile. Grade ≥3 treatment-emergent adverse events (“TEAE”) were reported in
Details of the presentation are as follows:
| Title: | A randomized, double-blind, placebo-controlled Phase 3 study of ESLIM-02 for efficacy and safety of sovleplenib (HMPL-523) in patients with warm autoimmune hemolytic anemia in China | |
| Lead Author: | Bing Han, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, China | |
| Session: | Oral Session (Targeted therapies in rare red cell and metabolic disorders) | |
| Presentation ID: | S301 | |
| Date & Time: | Thursday, 11 June 2026, 17:00 CEST | |
| Location: | A13 Hall | |
About Sovleplenib and wAIHA
Sovleplenib is a novel, investigational, selective small molecule inhibitor for oral administration targeting Syk. Syk is a major component in B-cell receptor and Fc receptor signaling and is an established target for the treatment of multiple subtypes of B-cell lymphomas and autoimmune disorders.
The accelerated clearance of antibody-coated RBCs by immunoglobulin Fc-gamma receptor (FcγR) bearing macrophages is thought to be the pathogenic mechanism in wAIHA.1 Activated Syk mediates downstream signaling of the activated Fc receptors in phagocytic cells, resulting in phagocytosis of RBCs.2 In addition, activation of Syk through the B-cell receptor mediates activation and differentiation of B-lymphocytes into antibody secreting plasma cells.3 Inhibition of Syk may have potential effects in the treatment of wAIHA through inhibition of phagocytosis and reduction of antibody production.
In addition to wAIHA, sovleplenib is also being studied in immune thrombocytopenia (“ITP”). Positive results from ESLIM-01 (NCT05029635), a Phase III trial in China of sovleplenib in patients with primary ITP, have been published in The Lancet Haematology. The NMPA accepted for review the resubmitted NDA filing for the treatment of ITP and granted it priority review in February 2026. According to IQVIA, China has 430,000 existing patients with 41,000 new ITP patients each year. About half of ITP patients fail to have satisfactory results from currently approved treatments such as TPO (thrombopoietin) / TPO-RAs (thrombopoietin receptor agonists).
HUTCHMED currently retains all rights to sovleplenib worldwide.
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. Since inception it has focused on bringing drug candidates from in-house discovery to patients around the world, with its first three medicines marketed in China, the first of which is also approved around the world including in the US, Europe and Japan. 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 US Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect HUTCHMED’s current expectations regarding future events, including but not limited to its expectations regarding the therapeutic potential of sovleplenib, the further clinical development for sovleplenib, its expectations as to whether any studies on sovleplenib 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. 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 sovleplenib, including as combination therapies, 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 markets of sovleplenib for a targeted indication, and the sufficiency of funding. 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 US 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.
Medical Information
This press release contains information about products that may not be available in all countries, or may be available under different trademarks, for different indications, in different dosages, or in different strengths. Nothing contained herein should be considered a solicitation, promotion or advertisement for any prescription drugs including the ones under development.
CONTACTS
| Investor Enquiries | +852 2121 8200 / ir@hutch-med.com |
| Media Enquiries | |
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| Brunswick – Zhou Yi | +852 9783 6894 (Mobile) / HUTCHMED@brunswickgroup.com |
| Panmure Liberum | Nominated Advisor and Joint Broker |
| Atholl Tweedie / Emma Earl / Rupert Dearden | +44 20 7886 2500 |
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| Geoff Nash / Nigel Birks | +44 20 7220 0500 |
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| Duncan Monteith / Ramin Naji | +44 20 7545 8000 |
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REFERENCES
| 1 | Barros MM, Blajchman MA, Bordin JO. Warm autoimmune hemolytic anemia: recent progress in understanding the immunobiology and the treatment. Transfus Med Rev. 2010; 24(3):195‐210. doi: 10.1016/j.tmrv.2010.03.002. | |
| 2 | Barcellini W, Fattizzo B, Zaninoni A. Current and emerging treatment options for autoimmune hemolytic anemia. Expert Rev Clin Immunol. 2018; 14(10):857‐872. doi: 10.1080/1744666x.2018.1521722. | |
| 3 | Davidzohn N, Biram A, Stoler‐Barak L, Grenov A, Dassa B, Shulman Z. SYK degradation restrains plasma cell formation and promotes zonal transitions in germinal centers. J Exp Med. 2020; 217(3):e20191043. doi: 10.1084/jem.20191043. | |
