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Climb Bio to Present New Data for Budoprutug in Immune Thrombocytopenia at the 68th American Society of Hematology Annual Meeting and Exposition

Climb Bio (Nasdaq: CLYM) will present new budoprutug clinical data in immune thrombocytopenia at an ASH poster session on December 13, 2026.

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Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

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Climb Bio (Nasdaq: CLYM) will present new budoprutug clinical data in immune thrombocytopenia at an ASH poster session on December 13, 2026. The presentation will cover safety, B-cell depletion and platelet data from all three dose cohorts in the ongoing Phase 1b trial in previously treated patients with primary immune thrombocytopenia. The poster session runs from 6:00–8:00 pm CT in New Orleans.

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Market move: CLYM -4.21% vs previous close. Phase 1b data presentation

$8.70 – $10.25 Day Range
$536.45M Mkt Cap at Last Price

On Nov 4, the day this news came out, the latest delayed price for CLYM is 4.21% below the previous close. Our momentum scanner has recorded 4 alerts for this stock so far that day. The latest delayed price is $9.34.

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Key Figures

Trial phase: Phase 1b Dose cohorts: 3 cohorts Poster presentation: December 13, 2026
Trial phase
Phase 1b
Ongoing budoprutug trial in previously treated patients with primary ITP
Dose cohorts
3 cohorts
Data presentation to include safety, B-cell depletion, and platelet data
Poster presentation
December 13, 2026
Scheduled at the ASH Annual Meeting and Exposition

Key Terms

immune thrombocytopenia, b-cell depletion, monoclonal antibody, anti-cd19
4 terms
immune thrombocytopenia medical
"new clinical data for budoprutug in immune thrombocytopenia (ITP)"
Immune thrombocytopenia is a blood disorder in which the body's immune system mistakenly destroys platelets, the small cells that help blood clot, causing easy bruising, bleeding and a low platelet count. Investors care because the condition drives demand for diagnostic tests, treatments and clinical trials, affects regulatory and reimbursement decisions, and can influence revenue and risk profiles for companies developing therapies—think of it as the immune system removing the repair crew needed to stop leaks.
b-cell depletion medical
"including safety, B-cell depletion, and platelet data"
B-cell depletion is a medical treatment strategy that lowers or removes B cells, a type of white blood cell that makes antibodies and helps coordinate immune responses. For investors, it matters because therapies that deplete B cells can be major products for autoimmune diseases, certain blood cancers, or organ transplant care, affecting sales potential, safety profiles, and regulatory risk; think of it like reducing a specific unit in an army to stop friendly fire but increasing vulnerability to other attacks.
monoclonal antibody medical
"a novel anti-CD19 monoclonal antibody"
A monoclonal antibody is a laboratory-made protein designed to recognize and attach to a specific target in the body, such as a disease-causing substance or cell. It functions like a highly precise lock-and-key tool, helping to treat or detect illnesses. For investors, companies developing monoclonal antibodies can represent promising opportunities in the healthcare sector, especially as these treatments often address unmet medical needs.
anti-cd19 medical
"a novel anti-CD19 monoclonal antibody"
Anti‑CD19 describes a therapy—often an antibody or an engineered immune cell—that specifically seeks out and binds to the CD19 protein found on the surface of certain B cells, marking them for removal. For investors, anti‑CD19 treatments matter because they target cancers and immune disorders with precision, so clinical trial results, approval decisions, manufacturing scale and safety data can drive a drug maker’s value much like a new, highly effective product can reshape a company’s future.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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WELLESLEY HILLS, Mass., Nov. 04, 2026 (GLOBE NEWSWIRE) -- Climb Bio, Inc. (Nasdaq: CLYM), a clinical stage biotechnology company developing therapeutics for patients with immune-mediated diseases, today announced that it will present new clinical data for budoprutug in immune thrombocytopenia (ITP) at the 68th American Society of Hematology (ASH) Annual Meeting and Exposition, which will be held in New Orleans, Louisiana from December 12-15, 2026.

Climb Bio will present data, including safety, B-cell depletion, and platelet data from all three dose cohorts from the ongoing Phase 1b trial of budoprutug, a novel anti-CD19 monoclonal antibody, in previously treated patients with primary immune thrombocytopenia.

Abstracts are available on the ASH 2026 website here.

Poster Details

Title: Budoprutug, a low-fucosylated anti-CD19 monoclonal antibody, in adults with primary immune thrombocytopenia: Preliminary phase 1b study results
Session: 311. Disorders of Platelet Number or Function: Clinical and Epidemiological: Poster II
Poster Number: 3003
Date / Time: December 13, 2026, from 6:00 – 8:00 pm CT

About Climb Bio, Inc.
Climb Bio, Inc. is a clinical-stage biotechnology company with a mission to deliver high impact, disease-modifying medicines for individuals living with immune-mediated diseases, including those affecting kidney health. The Company’s pipeline includes, budoprutug, an anti-CD19 monoclonal antibody that has potential to treat a broad range of B-cell mediated diseases, and CLYM116, an anti-APRIL monoclonal antibody being developed for IgA nephropathy. For more information, please visit climbbio.com. 

About Budoprutug
Budoprutug is a clinical-stage, anti-CD19 monoclonal antibody with the potential to address a broad range of B-cell mediated, immune-driven diseases. Designed with enhanced effector function and low picomolar affinity, budoprutug targets and depletes CD19-expressing B cells, including plasmablasts and certain plasma cells, key sources of pathogenic autoantibodies. Early clinical data suggest budoprutug may offer durable B-cell depletion, rapid reductions in autoantibodies, and clinical remission in primary membranous nephropathy (pMN). Budoprutug is being evaluated in clinical trials for pMN, immune thrombocytopenia (ITP), and systemic lupus erythematosus (SLE). A subcutaneous formulation is also in development to enable broader patient access. Budoprutug has been granted Orphan Drug Designation and Fast Track Designation by the FDA for the treatment of pMN.

Forward-Looking Statements
This press release contains “forward-looking statements,” including without limitation statements regarding: expectations regarding the therapeutic benefits, clinical potential and clinical development of budoprutug; the anticipated timelines for announcing data from Climb Bio’s ongoing and planned clinical trials; and other statements containing the words “anticipate,” “believe,” “continue,” “could,” “expect,” “may,” “plan,” “potential,” “project,” “should,” “suggest,” “target,” “will” and similar expressions. Forward-looking statements are based on management’s current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in, or implied by, such forward-looking statements. Climb Bio may not actually achieve the plans, intentions or expectations disclosed in these forward-looking statements, and you should not place undue reliance on these forward-looking statements. These risks and uncertainties include, but are not limited to, important risks and uncertainties associated with: the ability of Climb Bio to timely and successfully achieve or recognize the anticipated benefits of its acquisition of Tenet Medicines, Inc. and its technology transfer and exclusive license agreement with Mabworks; Climb Bio’s ability to advance budoprutug and CLYM116 on the timelines expected or at all and to obtain and maintain necessary approvals from the U.S. Food and Drug Administration and other regulatory authorities; obtaining and maintaining the necessary approvals from investigational review boards at clinical trial sites and independent data safety monitoring boards; replicating in clinical trials positive results found in early-stage clinical trials or nonclinical studies; competing successfully with other companies that are seeking to develop treatments for primary membranous nephropathy, immune thrombocytopenia, systemic lupus erythematosus, IgA nephropathy and other immune-mediated diseases; maintaining or protecting intellectual property rights related to budoprutug, CLYM116 and/or its other product candidates; managing expenses; changes in applicable laws or regulation; the possibility that Climb Bio may be adversely affected by other economic, business and/or competitive factors; and raising the substantial additional capital needed, on the timeline necessary, to continue development of budoprutug, CLYM116 and any other product candidates Climb Bio may develop. For a discussion of other risks and uncertainties, and other important factors, any of which could cause Climb Bio’s actual results to differ materially from those contained in the forward-looking statements, see the “Risk Factors” section, as well as discussions of potential risks, uncertainties and other important factors, in Climb Bio’s most recent filings with the U.S. Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent Climb Bio’s views as of the date hereof and should not be relied upon as representing Climb Bio’s views as of any date subsequent to the date hereof. Climb Bio anticipates that subsequent events and developments will cause Climb Bio’s views to change. However, while Climb Bio may elect to update these forward-looking statements at some point in the future, Climb Bio specifically disclaims any obligation to do so, except as required by law.

Investors and Media
Carlo Tanzi, Ph.D.
Kendall Investor Relations
ctanzi@kendallir.com


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