Core Viewpoint - Summit Therapeutics reported a narrower loss per share in Q1 2025 compared to estimates, but still lacks any marketed products, resulting in no quarterly revenues [1][2]. Financial Performance - The company reported a loss per share of 9 cents, which is better than the Zacks Consensus Estimate of a loss of 10 cents, but wider than the 6 cents loss from the previous year [1]. - Adjusted research and development expenses increased by 65% year over year to $47.1 million, primarily due to rising clinical costs [4]. - Adjusted general and administrative expenses surged 95% year over year to $8.6 million, attributed to higher headcount and commercial readiness efforts [4]. - As of March 31, 2025, the company had cash, cash equivalents, and short-term investments totaling $361.3 million, down from $412.3 million as of December 31, 2024 [5]. Pipeline Developments - Summit has one pipeline drug, ivonescimab, currently undergoing three late-stage studies for non-small cell lung cancer (NSCLC) [6]. - Positive results were reported from the Akeso-sponsored phase III HARMONi-6 study, showing significant improvement in progression-free survival compared to BeiGene's Tevimbra [7]. - The HARMONi-6 study is notable as the first late-stage study in NSCLC to demonstrate significant improvement over a PD-(L)1 inhibitor combined with chemotherapy [8]. - The company is also conducting the HARMONi-3 study, which compares ivonescimab plus chemotherapy against Merck's Keytruda [8]. - Akeso has secured approval for ivonescimab in a second indication based on HARMONi-2 results, although the interim overall survival analysis was not statistically significant [9]. - Summit is exploring partnerships for ivonescimab development across multiple disease areas, including a collaboration with Pfizer to evaluate the drug in combination with several of Pfizer's antibody-drug conjugates [10]. Stock Performance - SMMT's stock has surged 38% year to date, contrasting with a 2% decline in the industry [2].

Core Insights - Summit Therapeutics has seen a remarkable stock increase of 512% over the past year, primarily due to the clinical progress of its leading candidate, ivonescimab [1][2] - The company has licensed ivonescimab from Akeso, a China-based biopharmaceutical firm, and holds marketing rights in most regions outside of China, including the U.S. and Europe [3] - Ivonescimab is currently not approved in the U.S. but has received approval in China and is undergoing multiple clinical trials [4] Clinical Trial Results - A recent phase 3 clinical trial in China for ivonescimab in advanced squamous non-small cell lung cancer (NSCLC) showed statistically significant improvement in progression-free survival compared to Tevimbra, a competitor drug [5] - However, preliminary data from another phase 3 trial against Merck's Keytruda indicates that ivonescimab has not yet achieved a statistically significant improvement in overall survival [6][7] - Despite the mixed results, ivonescimab is involved in over a dozen other clinical trials targeting various cancer types, with NSCLC being a particularly attractive market due to its high mortality rate [8] Future Outlook - Ivonescimab has the potential to be a "pipeline in a drug," suggesting that it could lead to multiple label expansions beyond its initial indication [9] - The company is expected to continue experiencing volatility in the short term due to its clinical-stage status and broader market conditions, but long-term investment could yield significant returns [10]

Financial Data and Key Metrics Changes - The company ended Q1 2025 with a strong cash position of approximately $361 million and is now debt-free after paying off all debt in Q4 2024 [40]. - GAAP R&D expenses for Q1 2025 were $51.2 million, slightly down from $51.4 million in Q4 2024, while non-GAAP R&D expenses remained flat at $47.1 million [41]. - GAAP G&A expenses increased to $15.6 million in Q1 2025 from $14.2 million in Q4 2024, primarily due to increased professional services [42]. Business Line Data and Key Metrics Changes - The company is advancing its lead investigational asset, ivanismab, with significant progress in clinical trials, including four Phase 3 trials completed and five ongoing [13][14]. - The HARMONY trials are pivotal, with HARMONY three and HARMONY seven evaluating ivanismab against pembrolizumab in frontline non-small cell lung cancer [15][32]. Market Data and Key Metrics Changes - The addressable market for non-small cell lung cancer is expected to approach $20 billion for checkpoint inhibitors, with a broader market opportunity of approximately $90 billion globally across all checkpoint inhibitor indications [33][34]. - The company is exploring additional indications beyond non-small cell lung cancer, including colorectal cancer and pancreatic cancer, where ivanismab has shown promise [34]. Company Strategy and Development Direction - The company aims to build a viable organization that addresses serious unmet medical needs, focusing on ivanismab's potential as a platform blockbuster drug [11][33]. - Strategic collaborations, such as with MD Anderson and Pfizer, are in place to expand clinical development and explore innovative combinations [20][21]. Management's Comments on Operating Environment and Future Outlook - Management expressed enthusiasm about the ongoing clinical progress and the potential of ivanismab, particularly in the context of upcoming data releases from the HARMONY trials [5][13]. - The management team highlighted the importance of demonstrating the differentiated mechanism of action for ivanismab compared to existing therapies [22][28]. Other Important Information - The company has strengthened its leadership team with the appointment of a new Chief Commercial Officer to refine its commercial strategy [39]. - The full dataset for the HARMONY six trial is planned to be presented at a major medical conference later this year, which is expected to provide further insights into ivanismab's efficacy [24]. Q&A Session Summary Question: What is the bar for success regarding the upcoming HARMONY eGFR dataset? - The company is not prescribing a specific bar but emphasizes the importance of overall data package consistency with prior data from China [48]. Question: Will there be separate hazard ratios for geographic data in HARMONY? - The top-line data will provide qualitative context, and a forest plot may be used to illustrate geographic breakdowns [58]. Question: What is the expected overall survival benefit to replace PD-1 standard of care? - A statistically significant improvement of two to three months in overall survival is generally considered transformative by clinicians [90]. Question: How does the safety profile in global populations compare to that in China? - The safety profile reported in trials has been reassuring, and while there may be minor cultural differences in reporting adverse events, significant differences are not expected [79]. Question: What are the plans for accelerated approval discussions with the FDA? - The company has had multiple discussions with the FDA regarding HARMONY three but does not disclose specific details of these conversations [96].

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _________________ FORM 10-Q _________________ (Mark One) or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _________ to _________ Commission File Number: 001-36866 Summit Therapeutics Inc. (Exact name of registrant as specified i ...

Summit Therapeutics Reports Financial Results and Operational Progress for the First Quarter Ended March 31, 2025 Ivonescimab in Combination with Chemotherapy Achieves Statistically Significant Superiority in PFS vs. Tislelizumab (PD-1 Inhibitor) Plus Chemotherapy in First-Line Treatment of Patients with Advanced Squamous NSCLC in HARMONi-6 Study Conducted by Akeso in China Enrollment Continues in Global Phase III Trial HARMONi-3 in First-Line Treatment of Patients with Metastatic NSCLC Ivonescimab Receives ...

Core Viewpoint - Summit Therapeutics Inc. experienced a significant stock decline of nearly 30% following the announcement that Akeso, Inc.'s ivonescimab received approval for a second indication from Chinese Health Authorities based on Phase 3 trial results [1]. Group 1: Clinical Trial Results - The HARMONi-2 trial evaluated ivonescimab, a PD-1/VEGF bispecific antibody, against Merck's Keytruda in patients with advanced non-small cell lung cancer (NSCLC) with positive PD-L1 expression [2]. - The interim analysis of overall survival (OS) showed a clinically meaningful hazard ratio of 0.777, conducted at 39% data maturity with a nominal alpha level of 0.0001 [4]. - The primary analysis for HARMONi-2 demonstrated a statistically significant improvement in progression-free survival (PFS) with a hazard ratio of 0.51 (p<0.0001) when compared to pembrolizumab [5]. Group 2: Ongoing and Future Trials - Summit is currently enrolling patients in the HARMONi-7 Phase 3 clinical trial, which is evaluating ivonescimab monotherapy against pembrolizumab in patients with advanced NSCLC with positive PD-L1 expression [6]. - HARMONi-7 is being conducted globally with registrational intent for the U.S. and other regions within Summit's license territories [7]. - The HARMONi-6 trial evaluated ivonescimab in combination with platinum-based chemotherapy against tislelizumab, meeting its primary endpoint of PFS [8]. Group 3: Market Reactions - Following the developments regarding ivonescimab, BioNTech SE's stock also saw an increase, indicating positive market sentiment towards bispecific antibody candidates in oncology [9].

Core Viewpoint - The communication meeting held by Kangfang Biotech was prompted by a significant stock price drop of its overseas partner Summit Therapeutics, following the release of preliminary overall survival (OS) data for its dual-target antibody Ivosidenib, which led to market volatility and investor concerns about clinical data interpretation [1][4][5]. Group 1: Clinical Data and Market Reaction - The initial OS data for Ivosidenib was based on immature data and should be interpreted cautiously, as it was a mid-term analysis required by the National Medical Products Administration [2][10]. - The market had high expectations for Ivosidenib, especially after its previous clinical data showed significant efficacy compared to Keytruda (K drug), with a median progression-free survival (mPFS) of 11.14 months versus 5.82 months for K drug, and a hazard ratio (HR) of 0.51, indicating a 49% reduction in disease progression or death risk [3][4]. - Following the release of the OS data, Summit Therapeutics' stock fell by 36%, reflecting the market's reaction to the perceived overvaluation based on previous expectations [4][9]. Group 2: Company Strategy and Future Outlook - Kangfang Biotech's chairman emphasized that the OS data was not the primary endpoint of the study, and the focus should remain on the primary endpoint of progression-free survival (PFS) and the trend in OS [6][7]. - The company aims to provide innovative treatment options for lung cancer patients, marking a significant milestone for both Kangfang Biotech and the Chinese innovative drug industry [8][9]. - Kangfang Biotech is committed to advancing its clinical research in alignment with global standards, with confidence in the success of its ongoing studies, including the HARMONi-7 trial in the U.S. [11].

Core Viewpoint - The biotech sector, particularly companies involved in monoclonal antibody cancer therapies, experienced significant stock price volatility due to competitive developments, particularly the FDA approval of Akeso's cancer drug [1][2]. Group 1: Company Developments - Summit Therapeutics saw its shares drop by 36.1% following the news of Akeso's FDA approval, despite having positive phase 3 trial data for ivonescimab [1][5]. - BioNTech's shares fell by 15.4%, likely influenced by the competitive landscape as Akeso's drug received approval while BioNTech's drugs remain in late-stage trials [1][7]. - Akeso's penpulimab-kcqx received FDA approval for treating nasopharyngeal carcinoma, and ivonescimab was approved in China for PD-L1-positive non-small cell lung cancer [3][4]. Group 2: Competitive Landscape - Akeso's approval of its cancer drugs has created a competitive challenge for Summit, especially since Akeso holds rights to ivonescimab in China [4][5]. - The approval of Akeso's drugs may allow it to explore additional cancer treatments, potentially impacting Summit's market position [6]. - The rapid developments in the bispecific antibody space highlight the intense competition and uncertainty in the biotech industry, affecting investor sentiment towards companies like Summit and BioNTech [8].

Core Viewpoint - Summit Therapeutics' stock is experiencing a decline following the FDA approval of Akeso Inc.'s PD-1 monoclonal antibody, penpulimab-kcqx, for treating non-keratinizing nasopharyngeal carcinoma (NPC) [1][8]. Group 1: FDA Approval and Drug Development - Akeso Inc. received FDA approval for penpulimab-kcqx in combination with cisplatin or carboplatin and gemcitabine for first-line treatment of adult recurrent or metastatic NPC [1]. - The FDA also approved penpulimab-kcqx as a single agent for adults with metastatic NPC who have disease progression after platinum-based chemotherapy and at least one other prior line of therapy [2]. - Penpulimab-kcqx is Akeso's first internally developed biologic to receive FDA approval, marking the company's entry into the U.S. regulatory system [4]. Group 2: Clinical Trials and Efficacy - The FDA approval was based on the international Phase 3 trial AK105-304 and pivotal AK105-202 study, which demonstrated the drug's clinical benefits and favorable safety profile for metastatic NPC [5]. - The Phase 3 HARMONi-6/K112-306 trial evaluated Summit Therapeutics' ivonescimab in combination with platinum-based chemotherapy, meeting its primary endpoint of progression-free survival (PFS) [6]. - Ivonescimab monotherapy showed a statistically significant improvement in PFS compared to Merck's Keytruda, achieving a hazard ratio of 0.51 in the Phase 3 HARMONi-2 trial [7]. Group 3: Market Impact and Stock Performance - Following the FDA approval, Summit Therapeutics' stock price fell by 36.8%, trading at $23.21 [8]. - The National Medical Products Administration in China approved ivonescimab for use as a monotherapy for first-line treatment of PD-L1-positive non-small cell lung cancer (NSCLC) [8].

The companies add that before HARMONi-6, there were no known Phase 3 trials in NSCLC that showed a statistically significant improvement compared to PD-(L)1 inhibitor therapy in combination with chemotherapy in a head-to-head setting. Summit Therapeutics Inc.'s SMMT partner, Akeso, Inc., released topline data from the Phase 3 HARMONi- 6/K112-306 trial on Wednesday. The trial is evaluating ivonescimab in combination with platinum-based chemotherapy compared with tislelizumab, an anti-PD-1 antibody, in combin ...