Summary of Erasca (ERAS) FY Conference Call - June 10, 2025 Company Overview - **Company Name**: Erasca (ERAS) - **Mission**: Focused on eradicating RAS-driven cancers, which are mutated in approximately 30% to 50% of all diagnosed cancers annually [3][4] Key Programs - **Current Pipeline**: - **ERAS 15**: A pan RAS molecular glue, recently cleared IND [4][11] - **ERAS 4,001**: A pan KRAS inhibitor, also recently cleared IND [4][11] - **ERAS 12**: A bispecific antibody targeting EGFR, in earlier stages [5] Market Opportunity - **Unmet Need**: Millions of patients diagnosed annually with RAS mutant tumors, with 2.2 million for KRAS and 2.7 million including H and NRAS [7][38] - **Competitive Landscape**: - ERAS 15 has one main competitor, Revolution Medicine's RMC-6,236, but the space is relatively uncrowded due to chemistry and IP challenges [8][10] - The pan KRAS market is more competitive, but ERAS believes their program has a strong profile [8][10] Clinical Development Timeline - **IND Clearances**: Both ERAS 15 and 4,001 received IND clearances in May 2025, ahead of guidance [11][12] - **Phase I Data**: Expected in calendar year 2026 for both programs [12][37] - **Enrollment**: No concerns regarding enrollment due to high unmet need and interest from leading centers [38][39] Preclinical Data Highlights - **Binding Affinity**: ERAS 15 shows 8 to 20 times higher binding affinity to cyclophilin A compared to RMC-6,236 [14] - **In Vitro Potency**: 4 to 5 times greater potency than RMC-6,236 [15] - **Dosing**: Anticipated human dose for ERAS 15 to be about one-tenth of the comparator's dose, potentially leading to better tolerability [18][29] Safety and Efficacy Considerations - **Toxicity Monitoring**: Accumulation of the drug will be monitored, but no major concerns anticipated regarding drug-induced liver injury due to different binding mechanisms [30][31] - **Combination Therapies**: Plans to explore combinations with standard care agents, including cetuximab and PD-1 inhibitors [49][50] Financial Overview - **Licensing Agreements**: - ERAS 15: Upfront payment of $12.5 million, total deal value around $189 million [53] - ERAS 4,001: Upfront payment of $10 million, total deal value around $170 million [55] - **Cash Runway**: Extended guidance to the second half of 2028, providing over three years of cash [67] Strategic Focus - **Reprioritization**: Shifted focus from a pan RAF inhibitor (neparafenib) to RAS programs due to higher unmet needs and potential [59] - **Partnership Opportunities**: Open to finding strategic partners for neparafenib, with no rush to finalize a deal [63] Investor Sentiment - **Positive Feedback**: Investors have responded favorably to the strategic focus on RAS assets and extended cash runway [66][68] Conclusion - **Future Outlook**: Erasca is well-positioned with a strong pipeline and ample cash runway to advance its RAS programs, aiming to address significant unmet needs in oncology [73]

Summary of Eraska Conference Call Company Overview - **Company Name**: Eraska - **Mission**: Focused on erasing cancer, particularly RAS-driven cancers, with a pipeline centered on the RAS MAP kinase pathway [1][2] Key Programs and Pipeline - **Pan RAS Molecule**: ERAS 15, a pan RAS molecular glue, recently cleared for IND [2][4] - **Pan KRAS Inhibitor**: ERAS 4001, a switch to pocket binder, also cleared for IND [2][4] - **Pan RAF Inhibitor**: Naporafenib, currently in phase three for NRAS mutant melanoma, seeking a strategic partner for further development [2][31] - **Biologic**: ERAS 12, a bispecific antibody targeting both active and inactive confirmations of EGFR [3] Clinical Trials - **Trial Design**: Phase one trials for ERAS 15 (AURORAS one) and ERAS 4001 (Borealis one) involve dose escalation followed by monotherapy expansions [6][9] - **Patient Enrollment**: Focus on RAS naive patients for dose escalation [13] - **Expected Dosing Frequency**: ERAS 15 predicted half-life of 24 hours for once daily dosing; ERAS 4001 may require twice daily dosing [11][12] Competitive Landscape - **Market Position**: Eraska is positioned as a strong competitor in the RAS space, with fewer players and a solid preclinical profile compared to competitors like RevMed [39][40] - **Challenges**: Development of new pan RAS molecular glues is complex due to chemistry and limited IP space [40] Efficacy and Safety - **Efficacy Expectations**: ERAS 15 may achieve comparable efficacy at lower doses than RevMed's drug, with a potential one-tenth dose requirement for tumor regression [16][18] - **Safety Profile**: Preclinical data suggest potential safety advantages due to longer tumor residence time [19] Data Disclosure and Future Plans - **Data Guidance**: Expecting to disclose monotherapy data for both ERAS 15 and ERAS 4001 in 2026, with dozens of patients involved [32][50] - **Development Timeline**: Plans to move quickly on dose escalation and explore combination therapies in key indications [34][37] Financial Position - **Cash Reserves**: Approximately $411 million, providing a runway into the second half of 2028, positioning Eraska as one of the best-capitalized companies in the RAS space [49] Strategic Decisions - **Naporafenib Development**: Development paused to extend cash runway and focus on RAS programs [31] - **Partnership Strategy**: Actively seeking a partner for Naporafenib while maintaining focus on advancing RAS programs [46][47] Conclusion - Eraska is strategically positioned in the oncology market with a focused pipeline targeting RAS-driven cancers, strong financial backing, and a clear plan for clinical development and data disclosure. The company aims to leverage its competitive advantages to capture market share in a challenging landscape.