Summary of Jade Biosciences FY Conference Call Company Overview - **Company**: Jade Biosciences (NasdaqCM:JBIO) - **Focus**: Development of best-in-class therapeutics for autoimmune diseases, leveraging high-affinity binding monoclonal antibodies and half-life extension technology [2][3] Core Programs 1. **JADE101** - **Target**: Anti-APRIL for IgA nephropathy - **Current Status**: Phase I trial with healthy volunteers, results expected in the first half of 2026 [4][5] - **Market Opportunity**: Estimated at $10 billion in the U.S., potentially conservative due to recent approvals in the sector [9][10] - **Mechanism**: Designed to provide complete inhibition of APRIL, with a dosing interval of one subcutaneous injection every 8 weeks [12][18] - **Patient Population**: Approximately 170,000 diagnosed in the U.S., with 60%-75% eligible for treatment [13][15] - **Clinical Activity**: Expected to show significant reductions in proteinuria and stabilize kidney function [11][19] 2. **JADE201** - **Target**: Anti-BAFF-R, following the lead of Novartis' Ianalumab - **Current Status**: First-in-human trial planned for Q2 2026, with data expected in 2027 [6][30] - **Mechanism**: Aims for deeper B-cell depletion and prevention of B-cell repopulation, potentially overcoming limitations of existing therapies [27][28] 3. **JADE301** - **Status**: Target undisclosed for competitive reasons, expected to enter the clinic in the first half of 2027 [6][7] Financial Position - **Cash Position**: Closed 2025 with $336 million, sufficient to fund operations into the first half of 2028 [8] Market Dynamics - **IgA Nephropathy**: Increasing focus on the disease with new approvals, highlighting the need for effective treatments [4][10] - **KDIGO Guidelines**: New guidelines emphasize the need for efficacious medications targeting proteinuria levels below 0.5 grams per day [15][16] Competitive Landscape - **JADE101 vs. Sibeprenlimab**: JADE101 is over 750-fold more potent than sibeprenlimab, with a longer half-life and fewer injections required [11][23][24] - **Clinical Evidence**: Previous studies indicate that selective anti-APRIL agents show significant efficacy in reducing proteinuria, supporting the potential for JADE101 to capture market share [20][21] Conclusion - **Outlook**: Jade Biosciences is positioned for significant growth with multiple clinical programs advancing, particularly in the IgA nephropathy space, and is on track to deliver important data in the near future [33]

Summary of Jade Biosciences Conference Call Company Overview - **Company**: Jade Biosciences - **Industry**: Biotechnology, specifically focused on therapeutics for autoimmune diseases - **CEO**: Tom Frohlich - **Founded**: Mid-2024 - **Financial Position**: Closed last year with $336 million, sufficient to fund operations into the first half of 2028 [9] Key Products and Pipeline Jade 101 - **Type**: Anti-APRIL monoclonal antibody - **Target Indication**: IgA nephropathy (IgAN) - **Market Opportunity**: Estimated at over $10 billion in the U.S. alone, with potential for higher estimates due to recent approvals and pricing strategies [10][36] - **Clinical Development**: - Currently in Phase 1, with enrollment completed last year [4] - First patient in Phase 2 expected to be dosed around mid-2024, with data anticipated in 2027 [5] - **Mechanism of Action**: Aims for complete inhibition of APRIL to provide better clinical activity and longer dosing intervals, reducing treatment burden for patients [4][10] - **Competitive Landscape**: Believes it can achieve best-in-class status due to superior binding affinity and longer half-life compared to competitors [19][40] Jade 201 - **Type**: Anti-BAFF receptor monoclonal antibody - **Indication**: Targeting autoimmune diseases, with a focus on rheumatoid arthritis (RA) - **Clinical Development**: First-in-human study expected to start in Q2 2024 [26] - **Mechanism of Action**: Designed to provide deeper B-cell depletion and prevent repopulation of B-cells, addressing limitations of existing therapies like rituximab [41][42] Jade 003 - **Status**: Development candidate nominated but details not disclosed for competitive reasons [48] Market Dynamics - **Patient Population**: Approximately 170,000 patients in the U.S. with IgAN, with 60%-75% eligible for treatment based on proteinuria levels [11][36] - **Recent Approvals**: Otsuka's sibeprenlimab received approval with a broad label and high pricing, influencing market expectations [36][38] - **Pricing Strategy**: Sibeprenlimab priced at $30,000 per vial, leading to annual costs of $360,000-$390,000, which may elevate market potential for Jade's products [36][38] Regulatory and Development Strategy - **Regulatory Pathway**: Plans to engage with the FDA for a registration program based on detailed biomarker responses from the healthy volunteer study [34] - **Dosing Strategy**: Aiming for a Q8 week dosing schedule for Jade 101, which is expected to enhance patient compliance and market share [32][33] Competitive Advantages - **Differentiation**: Jade 101's ultra-high binding affinity and extended half-life are expected to provide superior efficacy and convenience compared to existing therapies [40] - **Market Research Insights**: Clinicians favor less frequent dosing, which could drive preference for Jade's therapies over competitors with more frequent dosing regimens [33] Conclusion - Jade Biosciences is positioned to capitalize on significant market opportunities in the autoimmune disease space with its innovative therapies, particularly Jade 101 and Jade 201. The company is focused on achieving best-in-class status through superior efficacy, safety, and patient convenience, while navigating a competitive landscape with strategic regulatory engagement and market positioning.

Summary of Jade Biosciences Conference Call Company Overview - **Company**: Jade Biosciences (NasdaqCM:JBIO) - **Founded**: June 2024 - **Management Team**: Includes experienced members from Chinook Therapeutics, focusing on iGAN (IgA nephropathy) and autoimmune diseases - **Assets**: Three key assets acquired from Paragon, a protein engineering company Industry and Market Insights - **Lead Program**: Anti-APRIL for IgA nephropathy, a significant unmet medical need with a market opportunity exceeding $10 billion in the US alone [2] - **Clinical Development**: Initiated a Phase I study in August 2025, with results expected in the first half of 2026, aiming for rapid transition to patient studies [2][3] Key Programs and Developments - **JADE201**: A eufucosylated antibody targeting BAFF-R, expected to enter clinical trials in the first half of 2026 [2][3] - **Third Program**: Details not disclosed, anticipated to enter trials in the first half of 2027 [3] - **Financial Position**: Strong resources to fund trials through the first half of 2028 [3] Clinical Data and Efficacy - **ASN Conference Insights**: - iGAN is emerging as a large prospective market with promising data from competitors like Vera and Vertex [5][6] - Vertex reported a 64% reduction in proteinuria in Phase II studies, while Vera showed a 42% placebo-adjusted reduction [6] - Sibeprenlimab data indicated a 54% decrease in proteinuria over 12 months, highlighting the importance of APRIL inhibition [7][8] Mechanism of Action and Therapeutic Window - **APRIL vs. BAFF**: - Evidence suggests that APRIL inhibition alone provides significant disease-modifying benefits in iGAN without the need for BAFF [10][11] - Adding BAFF does not enhance clinical outcomes, indicating that iGAN is primarily driven by APRIL-responsive plasma cells [10][11] Regulatory Landscape - **FDA Considerations**: - The FDA is exploring new study designs to support innovation in iGAN, potentially shortening confirmatory study durations from two years to one year [30][31] - This shift is seen as beneficial for anti-APRIL therapies, which show early and significant eGFR improvements [30][31] Future Directions and Lifecycle Management - **Exploration of New Indications**: - Plans to investigate other autoimmune diseases, including IgM-mediated diseases and Sjogren's syndrome, based on the success of current programs [24][34] - JADE201's development will focus on generating safety and tolerability data in RA patients before expanding to other indications [34] Conclusion - Jade Biosciences is positioned to capitalize on significant market opportunities in the autoimmune disease space, particularly with its lead program targeting iGAN. The company is leveraging strong clinical data and a robust financial position to advance its pipeline and explore new therapeutic avenues.

Summary of Jade Biosciences Conference Call Company Overview - **Company**: Jade Biosciences (NasdaqCM:JBIO) - **Founded**: Last year as the fourth spin-out of Paragon Therapeutics - **Lead Asset**: Jade 101, an anti-APRIL monoclonal antibody targeting IgA nephropathy [4][5] Key Points on Jade 101 - **Unmet Need**: High unmet need in IgA nephropathy with no approved disease-modifying therapies [5] - **Market Opportunity**: Significant market potential due to the lack of effective treatments [5] - **Mechanism of Action**: Targets APRIL, a cytokine implicated in IgA nephropathy, with a focus on potency and extended half-life [5][12] - **Half-Life**: Non-human primate (NHP) half-life of 27 days, with expectations for human half-life to be two to four times longer [7][9] - **Dosing Interval**: Targeting a dosing interval of at least every eight weeks, potentially extending beyond that [10][15] Financial Background - **Recent Financing**: Completed a reverse merger in April with a $200 million PIPE and a $95 million convertible note, followed by a $135 million financing [6] Clinical Development - **Phase I Data**: Expected in the first half of 2026, focusing on biomarkers such as APRIL and IgA levels [14][15] - **Biomarker Predictiveness**: Healthy volunteer data is expected to correlate strongly with patient outcomes in IgA nephropathy [20] - **Safety Profile**: Historical data shows a favorable safety profile for APRIL inhibitors, with no increased risk of infections [22][23] Competitive Landscape - **Comparison with Competitors**: Other anti-APRIL therapies have shown varying efficacy and safety profiles, with Jade 101 aiming for superior APRIL suppression [16][17] - **Regulatory Environment**: The FDA is exploring innovative trial designs for IgA nephropathy therapies, which may benefit Jade 101's development path [32][33] Jade 201 Overview - **Mechanism**: Jade 201 is a half-life extended anti-BAFFR monoclonal antibody designed to enhance B cell depletion while avoiding depletion of immature B cells [35][36] - **Indication**: Targeting rheumatoid arthritis (RA) as the first indication, with a focus on safety and biomarker responses [41] - **Market Potential**: The potential market opportunity for Jade 201 is estimated at $80 billion across various indications [45] Conclusion - **Future Outlook**: Jade Biosciences is positioned to capitalize on the growing interest in IgA nephropathy therapies and has a robust pipeline with Jade 101 and Jade 201, aiming for efficient development paths and favorable safety profiles [25][32][45]

Summary of Jade Biosciences Conference Call Company Overview - **Company**: Jade Biosciences (NasdaqCM:JBIO) - **Focus**: Development of therapies for autoimmune diseases, recently formed in June 2024 - **Key Assets**: Acquired three assets from Paragon Therapeutics, specializing in high affinity antibodies with half-life extension technology [1][2] Core Programs - **Lead Program**: JADE101, an anti-APRIL therapy targeting IgA nephropathy - **Market Potential**: Estimated at over $10 billion in the US [2] - **Mechanism**: Disease-modifying potential without unnecessary immunosuppression - **Dosing Schedule**: Aiming for one injection every eight weeks [2][4] - **Phase I Study**: Initiated with first cohort dosed, expected readout in the first half of next year [2][4] - **Second Program**: JADE201, a BAFF receptor targeting antibody - **Indication**: Initially targeting rheumatoid arthritis [3] - **Development Timeline**: First trial expected in the first half of next year [3] - **Third Program**: JADE03, details not extensively discussed, expected to enter the clinic in the first half of 2027 [4] Financial Position - **Funding**: - Initial reverse merger raised $300 million - Additional PIPE financing brought in $135 million [4] - **Cash Runway**: Pro forma cash position of approximately $356 million, expected to last into the first half of 2028 [42] Treatment Landscape for IgA Nephropathy - **Current Treatments**: Historically involved ACE inhibitors and steroids, evolving towards new therapies [6][7] - **KDIGO Guidelines**: New guidelines recommend treating all patients with agents that deplete pathogenic IgA and achieving ambitious proteinuria targets [8][9] - **Future Expectations**: Selective anti-APRIL therapies expected to become frontline treatments [8][9] Clinical Insights - **Biomarker Richness**: IgA nephropathy is biomarker-rich, aiding in the prediction of clinical efficacy [3][24] - **Phase III Trials**: Initial data from phase III trials of other therapies show promising results, with selective anti-APRIL showing a 51% reduction in proteinuria [12][20] JADE101 Design and Mechanism - **Potency**: JADE101 designed to have ultra-high binding affinity to APRIL, significantly higher than existing therapies [14][16] - **Half-Life Extension**: Incorporates YTE mutation for extended plasma exposure, aiming for convenient dosing [15][16] - **Clinical Activity**: Expected to provide significant clinical activity with minimal dosing frequency [23] JADE201 Development - **Mechanism**: Designed to deplete B-cells while blocking compensatory BAFF upregulation, enhancing therapeutic efficacy [35][36] - **Phase I Study**: Planned for rheumatoid arthritis patients, focusing on safety and pharmacokinetics [38] Regulatory Environment - **FDA Engagement**: Ongoing discussions with the FDA regarding the potential for accelerated approval based on proteinuria as a surrogate endpoint [31][32] Conclusion - Jade Biosciences is positioned to capitalize on significant market opportunities in autoimmune therapies, with a strong financial foundation and promising clinical programs aimed at addressing unmet medical needs in IgA nephropathy and other autoimmune conditions [4][42]

Core Insights - Jade Biosciences, Inc. is focused on developing therapies for autoimmune diseases, with its lead candidate JADE101 targeting immunoglobulin A nephropathy (IgAN) [1][9] - JADE101 is an investigational anti-APRIL monoclonal antibody designed to inhibit APRIL, a key factor in IgAN progression, and is currently in a Phase 1 trial [2][8] Company Overview - Jade Biosciences is a clinical-stage biotechnology company that aims to address unmet needs in autoimmune diseases, with a pipeline that includes JADE201 and JADE-003 in preclinical development [9] - The company was established based on assets licensed from Paragon Therapeutics, an antibody discovery engine [9] Product Details - JADE101 is engineered for subcutaneous dosing and has shown a favorable pharmacokinetic and pharmacodynamic profile in non-human primates (NHPs), with a serum half-life of approximately 27 days [7] - Preclinical studies indicate that JADE101 effectively reduces immunoglobulin levels, including IgA and IgM by approximately 55–68% and 62–75% respectively, while maintaining a preserved vaccination response [5][6] Clinical Development - The ongoing Phase 1 trial is randomized, double-blind, and placebo-controlled, evaluating single ascending doses of JADE101 in healthy volunteers, with interim data expected in the first half of 2026 [2][8] - The trial aims to define optimal dosing intervals based on biomarker responses that correlate with clinical activity in IgAN patients [8][11] Safety and Efficacy - JADE101 has demonstrated a favorable safety profile in preclinical studies, with no off-target binding or significant adverse effects observed [5][6] - The pharmacokinetic and biomarker responses in healthy volunteers are expected to inform therapeutic responses in IgAN patients, linking APRIL suppression to reductions in total IgA and proteinuria [6][11]

Summary of Jade Biosciences Conference Call - October 07, 2025 Company Overview - **Company**: Jade Biosciences (NasdaqCM: JBIO) - **Focus**: Development of novel therapies for autoimmune diseases - **Recent Financing**: Announced a private financing round with gross proceeds of approximately $135 million to support pipeline development [3][12] Key Development Candidates 1. **JADE-101**: - **Type**: Selective APRIL inhibitor - **Current Phase**: Phase 1 for IgA nephropathy (IgAN) - **Market Potential**: IgAN affects approximately 169,000 patients in the US, with a branded market expected to exceed $10 billion [7][8] - **Therapeutic Landscape**: No currently approved treatment reliably modifies the disease, indicating a significant unmet need [8] 2. **JADE-201**: - **Type**: Half-life extended afucosylated monoclonal antibody targeting B cell activating factor receptor (BAF-R) - **Mechanism**: Dual action to enhance B cell depletion and block BAF signaling [13][14] - **Market Potential**: Total addressable market exceeds $80 billion across multiple autoimmune diseases [14][29] - **Clinical Development**: First in human study planned for patients with rheumatoid arthritis in 2026 [26] 3. **JADE-003**: - **Status**: Undisclosed antibody discovery program anticipated to enter first in human studies in 2027 [11] Mechanism of Action and Competitive Advantage - **JADE-201** aims to provide deeper and more durable B cell depletion compared to existing therapies like rituximab, which has limitations such as slow IV infusions and incomplete tissue B cell depletion [30] - **Clinical Validation**: Builds on the success of Novartis' inalumab, which has shown promising results in multiple autoimmune indications [15][64] - **Pharmacokinetics**: J201 demonstrated approximately twofold increase in half-life compared to inalumab, allowing for less frequent dosing [25][26] Financial Position and Future Outlook - **Funding**: The recent financing is expected to support operations into 2028, facilitating the advancement of both JADE-101 and JADE-201 [12][31] - **Team Development**: Focus on building a team with expertise in drug development, regulatory strategy, and commercial execution [31] Important Metrics and Clinical Endpoints - **Phase 1 Study for JADE-201**: Focus on safety, tolerability, pharmacokinetics, and exploratory efficacy measures such as BAF-R occupancy and B cell depletion [27][46] - **DAS28 Score**: Considered an important exploratory endpoint for assessing clinical activity in rheumatoid arthritis patients [47] Market Context and Competitive Landscape - **Autoimmune Disease Market**: Significant unmet needs across various indications, with room for multiple successful therapies [62] - **Differentiation from Other Therapies**: JADE-201's dual mechanism of action is expected to provide advantages over CD19, CD20, and CAR T therapies by effectively targeting autoreactive B cells while sparing non-pathogenic B cells [64][65] Conclusion - Jade Biosciences is positioned to make significant advancements in the treatment of autoimmune diseases with its innovative pipeline, strong financial backing, and a focus on best-in-class therapies. The upcoming clinical trials for JADE-201 and the continued development of JADE-101 are critical to the company's growth and impact in the market [31][32]

Forward Looking Statements Certain statements in this presentation, other than purely historical information, may constitute "forward-looking statements" within the meaning of the federal securities laws, including for purposes of the "safe harbor" provisions under the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, express or implied statements relating to the expectations, hopes, beliefs, intentions or strategies of Jade Biosciences, Inc. ...

Core Viewpoint - Jade Biosciences, Inc. has announced a PIPE financing agreement expected to generate approximately $135 million in gross proceeds to fund its research and development efforts for autoimmune disease therapies [1][4]. Group 1: Financing Details - The PIPE financing involves the sale of 13,368,164 shares of common stock at a price of $9.14 per share and pre-funded warrants for 1,402,092 shares at a price of $9.1399 per warrant [3]. - The transaction is expected to close on or about October 8, 2025, pending customary closing conditions [3]. Group 2: Investor Participation - The financing includes participation from both new and existing investors, such as Janus Henderson Investors, Fairmount, and RA Capital Management, among others [2]. Group 3: Use of Proceeds - The net proceeds from the PIPE financing will be used for research and development, general corporate expenses, and working capital needs, with expectations that current cash and securities will fund operations into the first half of 2028 [4]. Group 4: Company Overview - Jade Biosciences is focused on developing therapies for autoimmune diseases, with its lead candidate, JADE101, currently in a Phase 1 clinical trial for immunoglobulin A nephropathy [7]. - The company also has a second candidate, JADE201, and an undisclosed antibody discovery program, JADE-003, in preclinical development [7].

Summary of Jade Biosciences Conference Call Company Overview - **Company**: Jade Biosciences (NasdaqCM: JBIO) - **Focus**: Development of best-in-class therapeutics for autoimmune diseases, particularly through high-affinity monoclonal antibodies sourced from Paragon Therapeutics [2][36] Key Points on IGAN and Therapeutic Landscape - **Lead Program**: Anti-APRIL antibody (Jade 101) targeting Immunoglobulin A Nephropathy (IGAN) with a market potential exceeding $10 billion in the U.S. [3][37] - **Clinical Stage**: Recently transitioned to a clinical stage company with the first cohort dosed, aiming for first-in-human readout in the first half of next year [4][38] - **Current Treatment Landscape**: Most patients currently receive ACE inhibitors or ARBs, with additional therapies like SGLT2s and immunosuppressants added if proteinuria targets are not met [6][40] - **Emerging Therapies**: New KDIGO guidelines propose that all patients should receive agents proven to reduce pathogenic IgA, positioning selective anti-APRIL therapies as frontline treatments [7][41][42] Jade 101 Development Insights - **Dosing Schedule**: Targeting a subcutaneous injection every eight weeks, which is more convenient than existing therapies [3][37] - **Potency and Affinity**: Jade 101 has a femtomolar affinity to APRIL, significantly higher than competitors, allowing for effective suppression at lower doses [13][47] - **Mechanism of Action**: Designed to prevent large immune complex formation, reducing immunogenicity risks and enhancing pharmacokinetics [16][49] Clinical Data and Efficacy - **Phase Two Data**: Previous studies showed that full APRIL suppression led to significant proteinuria reduction and stabilization of eGFR, with a safety profile comparable to placebo [20][54] - **Long-term Goals**: Aiming to achieve proteinuria levels below 0.3 grams per day to minimize long-term kidney failure risks [22][55] Future Development Plans - **Phase One Trial**: Scheduled for the first half of next year in New Zealand, with plans for a targeted open-label phase two study to quickly gather proof of concept data [56][58] - **Regulatory Interactions**: Engaging with regulators to ensure efficient development pathways, particularly in light of new therapies entering the market [59][61] - **Exploration of Other Indications**: Potential expansion into other IGM-driven diseases, pending positive phase one results [63][64] Financial Position - **Funding**: Closed the last quarter with $221 million, sufficient to fund operations through 2027, including the advancement of Jade 101 and other programs [32][66] Conclusion - Jade Biosciences is positioned to capitalize on the growing market for IGAN therapies with its innovative anti-APRIL antibody, Jade 101, and is actively pursuing clinical development while maintaining a strong financial foundation.