DelveInsight’s “Systemic Mastocytosis – Pipeline Insight, 2025” explores a robust pipeline of emerging drugs poised to reshape the treatment paradigm. Next-generation KIT inhibitors with improved selectivity and potency are leading the way, aiming to overcome resistance and deliver deeper, more sustained responses. Alongside these, novel pathway-targeted agents—including PI3K inhibitors, SYK inhibitors, and multi-kinase blockers—are being evaluated to disrupt downstream signaling cascades driving mast cell proliferation and survival.
Beyond targeted small molecules, innovative approaches such as monoclonal antibodies, bispecifics, and immunotherapies are under investigation to expand treatment strategies for advanced systemic mastocytosis and mast cell leukemia. Combination regimens pairing KIT inhibitors with novel agents are also emerging, designed to enhance efficacy and minimize relapse rates.
With increasing research investment, orphan drug designations, and growing regulatory support, the 2025 systemic mastocytosis pipeline highlights a shift toward precision medicine—transforming care from symptomatic control to targeted, outcome-driven therapy that offers renewed hope to patients with this rare and debilitating disease.
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Key Takeaways from the Systemic Mastocytosis Pipeline Report
• DelveInsight’s Systemic Mastocytosis pipeline analysis depicts a strong space with 8+ active players working to develop 8+ pipeline drugs for Systemic Mastocytosis treatment.
• The leading Systemic Mastocytosis companies include AB Sciences, Blueprint Medicines, Patara Pharma, Seagen Inc., GT Biopharma, Deciphera Pharmaceuticals, Novartis Oncology, and others are evaluating their lead assets to improve the Systemic Mastocytosis treatment landscape.
• Key Systemic Mastocytosis pipeline therapies in various stages of development include Mastinib, Avapritinib, PA101, Brentuximab vedotin, GTB-3550, DCC-2618, BLU-263, Midostaurin, and others.
• On July 7, 2025, Cogent Biosciences announced positive top-line results in the SUMMIT trial of bezuclastinib in patients with non-advanced systemic mastocytosis.
• In mid-2025, the HARBOR trial (Phase 2/3) of elenestinib (BLU-263) is actively evaluating efficacy vs placebo + best supportive care in patients with indolent systemic mastocytosis.
• Also in 2025, TLR-895, a BTK inhibitor targeting mast cell activation, is under clinical evaluation in systemic mastocytosis (especially indolent forms), as an alternative or complement to KIT inhibitors.
Systemic Mastocytosis Overview
Systemic mastocytosis (SM) is a rare disorder characterized by the abnormal accumulation of mast cells in multiple organs, including the skin, bone marrow, liver, spleen, and gastrointestinal tract. This excessive mast cell buildup leads to symptoms such as skin rashes, itching, abdominal pain, diarrhea, and an increased risk of severe allergic reactions.
SM can range from indolent forms with mild symptoms to aggressive variants that cause organ damage and may reduce life expectancy. Diagnosis typically involves blood tests, bone marrow biopsy, and genetic analysis. Treatment focuses on managing symptoms, reducing mast cell activation, and targeting the underlying disease with medications such as tyrosine kinase inhibitors, including midostaurin and avapritinib.
Find out more about Systemic Mastocytosis medication at https://www.delveinsight.com/report-store/systemic-mastocytosis-pipeline-insight
Systemic Mastocytosis Treatment Analysis: Drug Profile
Avapritinib: Blueprint Medicines
Avapritinib is a potent, selective inhibitor targeting activated KIT and PDGFRA mutant kinases, which are abnormally active due to mutations in certain diseases. Designed to bind and inhibit these active proteins, Avapritinib (AYVAKIT) is being developed globally by Blueprint Medicines for advanced and indolent systemic mastocytosis (SM). Blueprint has partnered with CStone Pharmaceuticals for development and commercialization in Mainland China, Hong Kong, Macau, and Taiwan, while retaining rights elsewhere. The FDA granted breakthrough therapy designation for AYVAKIT in advanced SM subtypes, including aggressive SM, SM with associated hematologic neoplasm, and mast cell leukemia, as well as for moderate to severe indolent SM. The FDA has accepted a supplemental new drug application, and the European Medicines Agency (EMA) is reviewing a marketing authorization application for advanced SM treatment.
Masitinib: AB Sciences
Masitinib shows promise in treating indolent systemic mastocytosis by reducing mast cell activity through inhibition of wild-type c-Kit, Lyn, and Fyn tyrosine kinases. Recognizing the need for new treatments, masitinib has received orphan drug designation from both the FDA and EMA. AB Science has launched a confirmatory Phase 3 trial, designed based on previous study results, to further evaluate its efficacy.
Learn more about the novel and emerging Systemic Mastocytosis pipeline therapies.
Systemic Mastocytosis Therapeutics Assessment
By Product Type
• Mono
• Combination
• Mono/Combination.
By Stage
• Late-stage products (Phase III)
• Mid-stage products (Phase II)
• Early-stage product (Phase I) along with the details of
• Pre-clinical and Discovery stage candidates
• Discontinued & Inactive candidates
By Route of Administration
• Oral
• Parenteral
• Intravenous
• Subcutaneous
• Topical
By Molecule Type
• Monoclonal Antibody
• Peptides
• Polymer
• Small molecule
• Gene therapy
Scope of the Systemic Mastocytosis Pipeline Report
• Coverage: Global
• Key Systemic Mastocytosis Companies: AB Sciences, Blueprint Medicines, Patara Pharma, Seagen Inc., GT Biopharma, Deciphera Pharmaceuticals, Novartis Oncology, and others.
• Key Systemic Mastocytosis Pipeline Therapies: Mastinib, Avapritinib, PA101, Brentuximab vedotin, GTB-3550, DCC-2618, BLU-263, Midostaurin, and others.
Explore detailed insights on drugs used in the treatment of Systemic Mastocytosis here.
Table of Contents
1. Introduction
2. Executive Summary
3. Systemic Mastocytosis Pipeline: Overview
4. Analytical Perspective In-depth Commercial Assessment
5. Systemic Mastocytosis Pipeline Therapeutics
6. Systemic Mastocytosis Pipeline: Late-Stage Products (Phase III)
7. Systemic Mastocytosis Pipeline: Mid-Stage Products (Phase II)
8. Systemic Mastocytosis Pipeline: Early Stage Products (Phase I)
9. Therapeutic Assessment
10. Inactive Products
11. Company-University Collaborations (Licensing/Partnering) Analysis
12. Key Companies
13. Key Products
14. Unmet Needs
15. Market Drivers and Barriers
16. Future Perspectives and Conclusion
17. Analyst Views
18. Appendix
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