Incyte Reports Promising Clinical Data for INCA033989 in Myelofibrosis Treatment
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Dec 07 2025
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Should l Buy INCY?
Source: Businesswire
- Clinical Data Highlights: Incyte presented preliminary data on INCA033989 at the 2025 ASH Annual Meeting, indicating significant spleen volume reduction and symptom improvement in patients with CALR-mutated myelofibrosis, showcasing its potential as both a monotherapy and combination therapy.
- Significant Treatment Effects: In the monotherapy arm, patients treated with INCA033989 (dose range 24 to 2,500 mg) exhibited a notable rate of ≥25% spleen volume reduction with no dose-limiting toxicities observed, demonstrating the drug's excellent tolerability and efficacy.
- Future Plans: Incyte plans to initiate a registrational program in 2026 to evaluate INCA033989 for myelofibrosis, further advancing the clinical development of this drug and aiming to provide new targeted treatment options for patients.
- FDA Breakthrough Therapy Designation: INCA033989 recently received FDA Breakthrough Therapy designation for treating patients with CALR mutations, highlighting its innovative potential in the treatment landscape and the possibility of transforming care for MPN patients.
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Analyst Views on INCY
Wall Street analysts forecast INCY stock price to rise
19 Analyst Rating
9 Buy
9 Hold
1 Sell
Moderate Buy
Current: 96.960
Low
73.00
Averages
100.31
High
125.00
Current: 96.960
Low
73.00
Averages
100.31
High
125.00
About INCY
Incyte Corporation is a biopharmaceutical company, which is focused on the discovery, development, and commercialization of therapeutics. The Company operates in two therapeutic areas. One therapeutic area is Hematology/Oncology, which is comprised of Myeloproliferative Neoplasms and Graft-Versus-Host Disease, as well as solid tumors and hematologic malignancies. Its other therapeutic area is Inflammation and Autoimmunity, which includes its Dermatology commercial franchise. Its hematology and oncology franchise are comprised of six products, which are JAKAFI (ruxolitinib), MONJUVI (tafasitamab-cxix)/MINJUVI (tafasitamab), PEMAZYRE (pemigatinib), ICLUSIG (ponatinib), NIKTIMVO (axatilimab-csfr), and ZYNYZ (retifanlimab-dlwr), as well as numerous clinical development programs. The Company's pipeline also includes two first-in-class small molecule antagonist of Mas-related G protein-coupled receptor (MRGPRX2) and INCB000547, an oral MRGPRX4 antagonist.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
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- Market Potential: Taylor will lead the U.S. sales efforts for Palvella's upcoming QTORIN™ rapamycin, targeting microcystic lymphatic malformations, which is projected to provide the first FDA-approved treatment for over 30,000 diagnosed patients in the U.S., addressing a critical market gap.
- Strategic Development: Taylor's addition not only strengthens Palvella's market position in rare skin diseases and vascular malformations but also reflects the company's commitment to attracting top talent to drive business growth in high unmet need areas of dermatology.
- Product Pipeline: Palvella is developing multiple product candidates based on its QTORIN™ platform, and Taylor's extensive experience will help accelerate the market introduction of these products, particularly in areas lacking FDA-approved therapies, further enhancing the company's competitive edge.
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- Market Potential: Taylor will oversee the U.S. sales for Palvella's upcoming QTORIN™ rapamycin, targeting microcystic lymphatic malformations, which is anticipated to provide the first FDA-approved treatment for over 30,000 diagnosed patients in the U.S., addressing a significant unmet need in the market.
- Strategic Development: Taylor's addition not only strengthens Palvella's market position in rare skin diseases and vascular malformations but also reflects the company's commitment to attracting top talent, aiming to build a robust sales organization to support future product launches and market expansion.
- Industry Experience: Taylor's extensive experience in dermatology will facilitate closer collaborations with dermatologists, particularly pediatric dermatologists, further driving market acceptance and sales growth for the QTORIN™ platform.
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- Clinical Collaboration Initiated: Adagene and Incyte are collaborating on a study evaluating the combination of INCA33890 and muzastotug in 3L MSS CRC patients, expected to begin in 2026, aiming to explore the potential of novel immunotherapies to improve patient outcomes.
- Drug Combination Validation: The combination of muzastotug with Merck's KEYTRUDA has shown promising overall response rates in previous trials, indicating its potential as a backbone therapy for next-generation immuno-oncology combinations.
- Study Design Details: The study will first assess safety and tolerability, followed by an efficacy expansion cohort focusing on chemotherapy-refractory MSS CRC patients, aiming to provide new treatment options for this challenging disease.
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- Good Safety Profile: The safety data over 54 weeks showed that treatment-emergent adverse events (TEAEs) occurred in 76.2% to 83.4% of patients, mostly mild to moderate, indicating a favorable tolerance for povorcitinib.
- Quality of Life Improvements: At Week 54, 40.5% to 46.8% of patients reported significant improvements in skin pain, and 49.0% to 58.0% experienced reductions in fatigue, suggesting that povorcitinib not only alleviates pathological symptoms but also enhances overall quality of life.
- Regulatory Application Progress: The STOP-HS data support the New Drug Application (NDA) and Marketing Authorization Application (MAA) for povorcitinib, which are currently under review by the U.S. FDA and European Medicines Agency, indicating its potential as the first oral treatment option for HS patients.
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- Significant Clinical Efficacy: The 54-week data from the STOP-HS program show that 71.4% of patients achieved HiSCR50, indicating povorcitinib's long-term efficacy in moderate to severe hidradenitis suppurativa (HS) patients, potentially transforming treatment paradigms.
- Notable Symptom Improvement: Post-treatment, 40.5% to 46.8% of patients reported significant reductions in skin pain, while 49.0% to 58.0% experienced less fatigue, highlighting povorcitinib's positive impact on quality of life.
- Good Safety Profile: Povorcitinib's safety over 54 weeks aligns with previous 24-week data, with 76.2% to 83.4% of patients experiencing treatment-emergent adverse events, mostly mild to moderate, and serious adverse events occurring at rates below 6.4%.
- Regulatory Application Progress: The STOP-HS data support the NDA and MAA submissions for povorcitinib, currently under review by the U.S. FDA and European EMA, indicating its potential as an oral treatment option.
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