Cogent Biosciences Announces GIST Clinical Trial Data
Written by Emily J. Thompson, Senior Investment Analyst
Updated: May 31 2026
0mins
Cogent Biosciences announced detailed clinical data from the primary analysis of the PEAK Phase 3 trial of bezuclastinib in combination with sunitinib in patients with Gastrointestinal Stromal Tumors, GIST, who have received prior treatment with imatinib. The presentation titled Primary Results of the Phase 3 Peak Study of Bezuclastinib + Sunitinib vs Sunitinib Monotherapy in Advanced Gastrointestinal Stromal Tumors will be presented. Key highlights: Bezuclastinib combination is first treatment ever to demonstrate statistically significant advantage against active comparator in GIST patients; median PFS of 16.5 months versus 9.2 months for bezuclastinib combination compared to sunitinib alone; Bezuclastinib combination provides clear PFS benefit regardless of primary or secondary KIT mutations; Mean duration of treatment estimated at 21.4 months for patients receiving bezuclastinib combination; Bezuclastinib combination well tolerated with no unique risks observed with the combination when compared to the known safety profile of sunitinib; Priority Review granted following FDA acceptance of NDA for bezuclastinib combination in GIST patients who previously received imatinib; PDUFA date scheduled for November 30, 2026
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Analyst Views on COGT
Wall Street analysts forecast COGT stock price to rise
12 Analyst Rating
10 Buy
2 Hold
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Strong Buy
Current: 33.670
Low
34.00
Averages
50.36
High
67.00
Current: 33.670
Low
34.00
Averages
50.36
High
67.00
About COGT
Cogent Biosciences, Inc. is a clinical-stage biotechnology company. It is focused on developing precision therapies for genetically defined diseases. Its approach is to design rational precision therapies that treat the underlying cause of disease and improve the lives of patients. Its advanced program is bezuclastinib, also known as CGT9486, a highly selective tyrosine kinase inhibitor that is designed to potently inhibit the KIT D816V mutation as well as other mutations in KIT exon 17. KIT D816V is responsible for driving systemic mastocytosis (SM), a serious and rare disease caused by unchecked proliferation of mast cells. The Company has on-going Phase I studies of its CNS-penetrant, selective mutant ErbB2 inhibitor and its potential best-in-class, wild-type-sparing, PI3Ka inhibitor. In addition, the Company’s research team is developing a portfolio of novel targeted therapies to help patients fighting serious, genetically driven diseases targeting mutations in KRAS and JAK2.
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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- Selectivity Advantage: CGT1145 exhibits over 100-fold selectivity for the JAK2 V617F mutation compared to JAK2 WT and JAK1/3 isoforms, demonstrating its potential to reduce off-target effects, which will help improve patient tolerability and quality of life.
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See More
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- Safety Assessment: Safety findings indicate that the regimen was well tolerated, with no new risks beyond the known profile of Sunitinib, and patients experienced manageable side effects without unique toxicities, suggesting a balance of safety and efficacy for this treatment approach.
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See More
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- FDA Priority Review: The FDA has accepted the NDA for the Bezuclastinib combination and granted priority review, with a PDUFA date set for November 30, 2026, providing new hope for patients in need of effective treatment options.
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See More
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- Combination Therapy: The drug is intended for use in combination with Pfizer's GIST therapy, sunitinib, specifically for patients who have previously been treated with imatinib, aiming to enhance treatment efficacy and meet the urgent market demand for new therapies.
- Significant Market Potential: CEO Andrew Robbins expressed excitement over the acceptance of the bezuclastinib NDA for GIST, indicating that preparations for the expected launches in both GIST and systemic mastocytosis are well underway, reflecting the company's confidence in the market potential of the new drug.
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See More
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- ASCO Presentation: Cogent plans to present the full results of the PEAK trial at the ASCO conference on May 30, 2026, further enhancing the company's visibility in the biopharmaceutical sector and preparing for the upcoming market launch.
See More
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See More
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- IND Application Progress: The company is on track to submit an Investigational New Drug application for CGT1145 in 2026, marking a rapid advancement in developing precision therapies for BCR-ABL-negative myeloproliferative neoplasms, potentially offering new treatment options for patients.
- Selectivity Advantage: CGT1145 exhibits over 100-fold selectivity for the JAK2 V617F mutation compared to JAK2 WT and JAK1/3 isoforms, demonstrating its potential to reduce off-target effects, which will help improve patient tolerability and quality of life.
- Market Potential: Given the high prevalence of the JAK2 V617F mutation in myeloproliferative neoplasm patients (e.g., 95% of polycythemia vera patients), the successful development of CGT1145 could position it prominently in the market to meet unmet medical needs.
See More
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- Clinical Trial Results: Cogent Biosciences presented detailed Phase 3 results from the PEAK trial at the 2026 ASCO annual meeting, demonstrating that Bezuclastinib in combination with Sunitinib offers a statistically significant survival advantage in patients with gastrointestinal stromal tumors previously treated with Imatinib, with a median PFS of 16.5 months compared to 9.2 months with Sunitinib alone, yielding a hazard ratio of 0.50 and a p-value of 0.0001.
- Treatment Duration: The average treatment duration extended to 21.4 months, indicating that patients receiving the Bezuclastinib and Sunitinib combination can achieve a longer progression-free survival, thereby enhancing the clinical significance of this therapy.
- Safety Assessment: Safety findings indicate that the regimen was well tolerated, with no new risks beyond the known profile of Sunitinib, and patients experienced manageable side effects without unique toxicities, suggesting a balance of safety and efficacy for this treatment approach.
- FDA Review Progress: The FDA has accepted Cogent's NDA for the Bezuclastinib combination and granted Priority Review, with a PDUFA date set for November 30, 2026, highlighting the potential market prospects for this drug.
See More
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- Clinical Trial Results: The combination of Bezuclastinib and sunitinib demonstrated a significant progression-free survival (PFS) advantage in GIST patients, achieving 16.5 months compared to 9.2 months for sunitinib alone, with a hazard ratio of 0.50 (p<0.0001), marking a major breakthrough in treatment efficacy.
- Good Tolerability: The combination therapy was well tolerated, consistent with the known safety profile of sunitinib, and no unique risks were observed, indicating its potential for clinical application and the possibility of becoming a new standard of care.
- FDA Priority Review: The FDA has accepted the NDA for the Bezuclastinib combination and granted priority review, with a PDUFA date set for November 30, 2026, providing new hope for patients in need of effective treatment options.
- New Clinical Trial Initiation: Cogent announced the initiation of a new clinical trial to evaluate the safety and efficacy of the Bezuclastinib combination in first-line GIST patients, further validating its application potential across different patient populations.
See More
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- FDA Priority Review: Cogent Biosciences' lead candidate, bezuclastinib, has received FDA priority review for its New Drug Application targeting gastrointestinal stromal tumors (GIST), with a target action date set for November 30, 2026, which could provide a new treatment option for patients.
- Combination Therapy: The drug is intended for use in combination with Pfizer's GIST therapy, sunitinib, specifically for patients who have previously been treated with imatinib, aiming to enhance treatment efficacy and meet the urgent market demand for new therapies.
- Significant Market Potential: CEO Andrew Robbins expressed excitement over the acceptance of the bezuclastinib NDA for GIST, indicating that preparations for the expected launches in both GIST and systemic mastocytosis are well underway, reflecting the company's confidence in the market potential of the new drug.
- Dual Launch Strategy: In addition to GIST, the NDA for bezuclastinib targeting non-advanced systemic mastocytosis has also been accepted by the FDA, with a target action date of December 30, 2026, further enhancing Cogent Biosciences' competitive position in the market.
See More
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- Clinical Trial Results: The PEAK Phase 3 trial demonstrated a median progression-free survival of 16.5 months for the Bezuclastinib combination compared to 9.2 months for Sunitinib monotherapy, indicating a 50% reduction in risk (HR=0.50), which provides a new treatment option for GIST patients and may redefine treatment standards.
- Safety Data: The safety profile of the Bezuclastinib combination was comparable to Sunitinib, with common adverse events including hypertension and neutropenia, and most adverse reactions were manageable low-grade events, ensuring patient acceptance and treatment continuity.
- ASCO Presentation: Cogent plans to present the full results of the PEAK trial at the ASCO conference on May 30, 2026, further enhancing the company's visibility in the biopharmaceutical sector and preparing for the upcoming market launch.
See More
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- Stake Reduction Details: HighVista Strategies reported a sale of 238,243 shares of Viridian Therapeutics in its SEC filing dated May 15, 2026, representing an estimated $7.08 million trade, indicating a cautious outlook on the company's future performance.
- Impact of Stock Price Fluctuations: Despite Viridian Therapeutics' stock price rising 35% over the past year, the value of its position declined by $8.97 million at quarter-end, reflecting market concerns regarding the upcoming FDA decision.
- Company Financial Overview: Viridian's latest financial report indicates a revenue of $70.85 million and a net loss of $342.6 million over the trailing twelve months, highlighting the financial pressures faced during its development phase, which may affect investor confidence.
- Market Outlook and Challenges: With an FDA decision looming on June 30 for its lead therapy, Viridian's market performance may be impacted, especially after its Phase 3 clinical data fell short of expectations, prompting investors to carefully assess risks and opportunities.
See More
