ATI-052: Anti-TSLP x IL-4Rα Bispecific Antibody Program Highly Potent and Bioactive Investigational Product Candidate January 6, 2026 Disclaimer and Cautionary Note Regarding Forward-Looking Statements Any statements contained in this presentation that do not describe historical facts may constitute forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements may be identified by words such as "anticipate," "believe," "expect," "intend," "may," ...

Summary of Compass Therapeutics Conference Call Company Overview - **Company**: Compass Therapeutics (NasdaqCM:CMPX) - **Industry**: Biotechnology, specifically focused on oncology and monoclonal antibody development - **Location**: Boston Key Clinical Programs Tevesemig (DLL4 VEGFA Bispecific Antibody) - **Current Status**: In a randomized trial for advanced biliary tract cancer - **Primary Endpoint Achievement**: Reported a tripling of the overall response rate compared to the control arm [4][10] - **Response Rate**: Achieved one of the highest response rates in second-line treatment for advanced biliary tract cancer [4] - **Disease Control Rate**: Significantly higher in the Tevesemig arm, suggesting potential improvements in progression-free survival (PFS) [5][10] - **Expected Data Release**: PFS and overall survival (OS) data anticipated by the end of Q1 2026 [8][11] - **Crossover Impact**: Approximately half of the control arm patients crossed over to receive Tevesemig, which may affect OS event accrual [16][22] 8371 (PD-1/PD-L1 Bispecific Antibody) - **Current Status**: Completed phase one dose escalation with no dose-limiting toxicities [5][6] - **Response Rate**: Three confirmed responses in 15 patients treated, including significant tumor reduction in a triple-negative breast cancer patient [6][7] - **Next Steps**: Moving to cohort expansions for non-small cell lung cancer and triple-negative breast cancer, with potential for approval studies in 2026 [30][32] 10726 (PD-1/VEGF Bispecific Antibody) - **Current Status**: Expected IND filing and phase one initiation in the first half of 2026 [33] - **Target Indications**: Hepatocellular cancer, gastric cancer, renal cell cancer, and endometrial cell cancer [33] Market Potential - **Biliary Tract Cancer**: Approximately 25,000 new cases annually in the U.S., with an increasing incidence projected [24] - **Eligible Patients for Tevesemig**: Estimated 15,000 patients annually in the U.S. alone, significantly larger than the platinum-resistant ovarian cancer market [24][25] - **Global Market**: Over 100,000 patients diagnosed annually across the U.S., EU, and Japan [25] Regulatory and Commercialization Strategy - **BLA Submission Timeline**: Expected in the second half of 2026, following positive interactions with the FDA [23] - **Commercialization Plans**: Preparing to launch Tevesemig independently in the U.S., with potential partnerships for ex-U.S. markets [26] Statistical Analysis and Methodology - **Statistical Techniques**: Utilizing Rank Preserving Structural Failure Time (RPSFT) for OS analysis to account for crossover patients [16][17] - **Hierarchical Testing**: Employed to control alpha spending across multiple endpoints [20] Additional Insights - **Clinical Operations**: Low patient loss to follow-up (approximately 5%) indicates strong clinical management [13] - **Future Outlook**: 2026 is anticipated to be a pivotal year for Compass Therapeutics with multiple potential approvals and market entries [32][33]

Core Insights - Akeso, Inc. has received approval from the National Medical Products Administration (NMPA) to initiate clinical trials for its bispecific antibody AK152, targeting Alzheimer's Disease [1][2]. Company Overview - Akeso is a leading biopharmaceutical company founded in 2012, focusing on innovative biological medicines and has developed a comprehensive end-to-end drug development platform [10]. - The company has a robust pipeline of over 50 innovative assets across various disease areas, with 24 candidates currently in clinical trials [10]. Product Development - AK152 is the first bispecific antibody developed in China aimed at disease-modifying therapy for Alzheimer's Disease, marking a significant breakthrough in the field [2]. - The antibody targets both amyloid-beta (A) and a receptor expressed on the blood-brain barrier (BBB), enhancing brain penetration and therapeutic efficacy [4][6]. Mechanism of Action - AK152 binds to amyloid-beta plaques and selectively targets neurotoxic soluble A oligomers, while also utilizing receptor-mediated endocytosis to improve brain penetration [4][6]. - Preclinical studies indicate that AK152 significantly improves brain penetration and accelerates the clearance of A plaques compared to conventional monoclonal antibodies [5][6]. Clinical Significance - The development of AK152 addresses critical unmet clinical needs in treating Alzheimer's Disease, which has long posed therapeutic challenges globally [5]. - The promising preclinical results suggest that AK152 could become a next-generation disease-modifying therapy for Alzheimer's patients [6].

Group 1 - The article discusses the investment opportunities in Xencor (NASDAQ: XNCR) particularly in relation to its advancements in the RA program following promising NHL data [2] - The author operates the Biotech Analysis Central service, which provides in-depth analysis of pharmaceutical companies and includes a library of over 600 biotech investing articles [2] - The service offers a model portfolio of more than 10 small and mid-cap stocks, along with live chat and various analysis reports to assist healthcare investors [2] Group 2 - The article does not contain any specific financial data or performance metrics related to Xencor or the broader biotech industry [1][3][4]

Summary of Compass Therapeutics Conference Call Company Overview - **Company**: Compass Therapeutics (CMPX) - **Industry**: Biotechnology, specifically focused on monoclonal antibody discovery and development in oncology [2][3] Key Achievements and Milestones - **Current Pipeline**: Three drugs in clinical trials with a fourth IND submission expected later in 2025 [3] - **Lead Program**: Tivesamig, a DLL4 VEGF A bispecific antibody, has met primary endpoints in a randomized study for advanced biliary tract cancer [3] - **Survival Data**: Recent updates indicate fewer deaths than projected in the study, with overall survival (OS) and progression-free survival (PFS) data expected in Q1 2026 [3][17] - **Efficacy Signals**: Phase I study of PD-1 PD-L1 bispecific antibody (8,371) shows deep responses in patients with non-small cell lung cancer and triple-negative breast cancer [4] Regulatory and Approval Path - **Regulatory Benchmarks**: No specific benchmarks from the FDA; however, a hazard ratio of 0.6 is targeted for significant treatment effect [9][10] - **Approval Strategy**: Plans to seek full approval based on PFS and OS data, with no discussions for accelerated approval [11][12] - **Control Arm**: Paclitaxel was chosen as the control arm based on FDA guidance, as there is no standard of care for the patient population [18] Safety Profile - **Adverse Events**: Common adverse event is hypertension, similar to Avastin; independent data safety monitoring committee has not identified new safety signals [19][20] Commercial Opportunity - **Market Size**: Estimated 15,000 new patients annually in the U.S. for second-line biliary tract cancer, with a potential market exceeding $3 billion annually [25] - **Commercial Strategy**: Plans to commercialize the drug independently in the U.S. with a targeted sales force of around 50 people [28] Manufacturing and Readiness - **Manufacturing Yields**: Achieved fivefold higher production yields compared to traditional monoclonal antibodies, with cost of goods comparable to small molecules [30][31] Future Outlook - **2026 Goals**: Successful readout from the randomized trial of Tivesamig, FDA interaction, and potential license application; further development of PD-1 PD-L1 bispecific antibody and next-generation bispecific antibody [47][48] Competitive Landscape - **Market Dynamics**: Despite competition in the PD-1/PD-L1 space, there is room for better drugs, and the company aims to define niche indications for its products [36][39] Conclusion - **Financial Position**: Compass Therapeutics has a strong cash position of approximately $230 million, providing a runway into 2028 to support ongoing and future clinical programs [48]

Core Insights - Bristol Myers Squibb (BMY) has entered a strategic collaboration with BioNTech (BNTX) for the co-development and co-commercialization of the bispecific antibody BNT327, targeting multiple solid tumor types [1][9]. Company Developments - BNT327 is a next-generation bispecific antibody that targets PD-L1 and VEGF-A, currently in trials with over 1,000 patients, including phase III studies for extensive stage small cell lung cancer (ES-SCLC) and non-small cell lung cancer (NSCLC) [2][4]. - BMY will make an upfront payment of $1.5 billion to BioNTech, with additional non-contingent anniversary payments of $2 billion through 2028, and up to $7.6 billion in potential milestone payments [3][9]. Financial Performance - BMY's shares have declined by 13.6% year-to-date, compared to a 3.3% decline in the industry [8]. - The company is trading at a price/earnings ratio of 7.31x forward earnings, lower than its historical mean of 8.55x and the large-cap pharma industry's average of 14.95x [10]. Earnings Estimates - The Zacks Consensus Estimate for BMY's 2025 earnings per share has increased to $6.85 from $6.75 over the past 60 days, while the estimate for 2026 has decreased [11].

Summary of Compass Therapeutics Conference Call Company Overview - **Company**: Compass Therapeutics (CMPX) - **Industry**: Biotechnology, specifically focused on monoclonal antibody discovery and development in oncology - **Location**: Boston, Massachusetts - **Current Pipeline**: Three drugs in clinical trials, including: - Tevesimig (DLL4 VEGF A bispecific antibody) - CT-471 (next-gen CD137 agonist antibody) - CT-172 (PD-1 PD-L1 bispecific antibody) - Upcoming: CT-10726 (VEGF PD-1 bispecific antibody) to enter the clinic later this year [4][5][6] Key Points and Arguments Tevesimig Clinical Trial - **Trial Design**: Randomized trial in advanced biliary tract cancer patients who have received one prior line of therapy, comparing Tevesimig plus Paclitaxel versus Paclitaxel alone [8] - **Primary Endpoint**: Overall response rate; key secondary endpoints include progression-free survival (PFS), overall survival (OS), and duration of response [9] - **Results**: - Combination arm response rate: 17.1% with a disease control rate above 60% - Control arm response rate: 5.3% with a disease control rate less than 40% - Statistically significant difference (P = 0.031) [10] - **Follow-up**: Median follow-up of 15 months; projections indicate mortality levels will not be reached until at least 19 months of follow-up [15] Regulatory and Future Plans - **FDA Interaction**: Plans to meet with the FDA post-PFS and OS data disclosure in Q4; aiming for full approval based on the current study [20][21] - **BLA Submission Timeline**: Anticipated in the first half of next year, with a potential launch in the second half of 2026 [25] - **Safety Profile**: Consistent with expectations; monitored by an independent data monitoring committee [27] Upcoming Data and Studies - **MD Anderson Study**: Investigator-sponsored study adding Tevesimig to frontline therapy; preliminary results expected by year-end [22] - **Biomarker Analysis**: Plans for retrospective analysis of DLL4 expression and genomic markers to inform future studies [30][32] PD-1 VEGF Bispecific Antibody - **Development Status**: IND filing planned for Q4; preclinical data suggests superior PD-1 blockade compared to competitors [41][48] - **Market Interest**: High interest in the bispecific space, with ongoing discussions regarding potential partnerships [50] Other Programs - **CT-471**: Focus on NCAM expressing tumors; plans for a basket study targeting neuroendocrine tumors and small cell lung cancer [61] - **Financial Position**: $113 million in cash at the end of Q1, providing runway into 2027 [64] Important but Overlooked Content - **Clinical Significance**: A hazard ratio less than 0.6 for OS and PFS would be considered clinically meaningful, with comparisons to existing therapies [19] - **Market Dynamics**: The competitive landscape for bispecific antibodies is rapidly evolving, with a focus on differentiation through unique epitopes and mechanisms of action [41][45] - **Investor Focus**: Key milestones include PFS and OS readouts, dose escalation study results, and IND filings, which are critical for future funding and partnerships [65]

Core Insights - Regeneron Pharmaceuticals announced initial results from the Phase 1b LINKER-MM2 trial evaluating linvoseltamab in combination with proteasome inhibitors for relapsed/refractory multiple myeloma, showing high response rates [1][2] Summary by Sections Trial Overview - The LINKER-MM2 trial is a Phase 1b, open-label study assessing linvoseltamab combined with carfilzomib or bortezomib in patients with relapsed/refractory multiple myeloma who have progressed after at least two lines of therapy [9][11] Efficacy Results - In the carfilzomib cohort, 90% objective response rate (ORR) was observed with 76% achieving complete response (CR) after a median follow-up of 15 months [3] - In the bortezomib cohort, an 85% ORR was reported with 50% achieving CR after a median follow-up of 9 months [4] Safety Profile - Common treatment-emergent adverse events (TEAEs) in the carfilzomib cohort included neutropenia (65%), cytokine release syndrome (CRS; 61%), and infections (91%) [3] - In the bortezomib cohort, the most common TEAEs were CRS (58%), neutropenia (54%), and infections (75%) [5] Future Directions - A registrational, randomized Phase 3 trial is planned to investigate the combination of linvoseltamab and carfilzomib against standard-of-care treatments [3] - The FDA is reviewing the Biologics License Application for linvoseltamab in the U.S., with a target action date of July 10, 2025 [7] Market Context - Multiple myeloma is the second most common blood cancer, with over 187,000 new cases diagnosed globally each year [8] - Despite treatment advances, multiple myeloma remains incurable, necessitating ongoing research and development of new therapies [8]

Financial Data and Key Metrics Changes - The company reported a significant increase in the overall response rate for its lead drug, tevesimig, in the second line biliary tract cancer study, with a response rate of 17.1% compared to 5.3% for the control arm, indicating a more than tripling of the response rate [12][13] - The study also showed a statistically significant difference with a p-value of 0.031, highlighting the drug's efficacy [13] Business Line Data and Key Metrics Changes - The lead program, tevesimig, is a bispecific antibody targeting DLL4 and VEGF A, which has shown promising results in clinical trials [4][7] - The company is also advancing CTX-471, a monoclonal antibody agonist targeting CD137, which has shown a 28% response rate in a post-PD-1 patient population [22][23] Market Data and Key Metrics Changes - The company identified a significant unmet medical need in the second line biliary tract cancer market, where there are currently no labeled therapies for the majority of patients [11] - The basket study for tevesimig in DLL4 positive cancers is expected to explore a range of solid tumor indications, indicating a broad market opportunity [19] Company Strategy and Development Direction - The company aims to leverage its unique StitchMaps platform to develop next-generation antibody therapeutics, focusing on dual blockade strategies to enhance efficacy in oncology [3][7] - Future plans include a Phase II basket study for tevesimig and potential label expansion studies following its approval [19] Management's Comments on Operating Environment and Future Outlook - Management expressed enthusiasm about the upcoming readouts for progression-free survival and overall survival, indicating a positive outlook for tevesimig's clinical development [17] - The company is optimistic about the performance of the control arm in clinical trials, suggesting a potential treatment effect that could lead to fewer deaths than initially expected [17] Other Important Information - The company has fast track status for tevesimig, which could expedite its approval process, with potential approval in the second half of 2026 [19][32] - The company is also developing CTX-8371, a PD-1 PD-L1 bispecific antibody, which is currently in Phase I studies and is expected to present clinical data in the second half of the year [29] Q&A Session Summary Question: Can you provide an overview of tevesimig's clinical data? - The overall response rate for tevesimig plus paclitaxel was 17.1%, significantly higher than the 5.3% for paclitaxel alone, with a statistically significant p-value of 0.031 [12][13] Question: What is the rationale behind the DLL4 positive cancers basket study? - DLL4 notch signaling is involved in various malignancies, and the company aims to explore the efficacy of tevesimig in these cancers due to its demonstrated monotherapy activity [19] Question: What are the upcoming catalysts for the company? - Key upcoming catalysts include readouts from the tevesimig study, the initiation of several important clinical trials, and data from the CTX-471 basket study [34]

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].