Immuneering Corporation (NASDAQ:IMRX) stock is trading lower on Thursday after the company shared updated data from its ongoing Phase 2a trial of atebimetinib (IMM-1-104) with a modified chemotherapy combination (gemcitabine/nab-paclitaxel (mGnP) in first-line pancreatic cancer.Thirty-four (34) patients in the trial had over 13 months median follow-up time.Overall survival on the chemotherapy regimen after 12 months was 35%, compared to 64% in the atebimetinib combo trial.The survival was 83% in the atebime ...

Core Insights - The European Commission has approved the label expansion of Regeneron Pharmaceuticals' PD-1 inhibitor Libtayo for use as an adjuvant treatment for adult patients with high-risk cutaneous squamous cell carcinoma (CSCC) after surgery and radiation [1][9]. Group 1: Libtayo Approval and Efficacy - The recent approval expands Libtayo's indications to include patients at high risk of disease recurrence, complementing its existing approvals for advanced CSCC, advanced basal cell carcinoma, advanced non-small cell lung cancer, and recurrent or metastatic cervical cancer [2][9]. - The approval is based on data from the global late-stage C-POST study, which demonstrated a 68% reduction in the risk of disease recurrence or death when Libtayo was compared to placebo [3][5]. - CSCC is one of the fastest-growing forms of skin cancer, and the approval highlights the need for earlier intervention in patients who are at significant risk of recurrence despite effective management through surgery or radiation [4][5]. Group 2: Financial Performance and Market Position - Libtayo has shown strong sales performance, totaling $1.03 billion in the first nine months of 2025, reflecting a 21% year-over-year increase [5]. - Regeneron is also evaluating Libtayo for use as a monotherapy and in combination with other therapies for various solid tumors and blood cancers [6]. Group 3: Eylea Developments - The FDA has approved Eylea HD for the treatment of macular edema following retinal vein occlusion, allowing for dosing up to every eight weeks after an initial monthly period [7][9]. - Eylea remains a significant contributor to Regeneron's revenue, although it faces competition from Roche's Vabysmo, which has impacted Eylea's sales [10][11]. - Eylea HD sales in the U.S. increased by 10% in Q3 2025 due to higher demand, and further label expansions are expected to boost sales [10]. Group 4: Portfolio Diversification and New Approvals - Regeneron is actively working to diversify its portfolio in response to declining Eylea sales, with a year-to-date stock performance of -1.4% compared to the industry's growth of 16.5% [12]. - Recent FDA approvals for linvoseltamab-gcpt and Ordspono have strengthened Regeneron's oncology franchise, targeting relapsed or refractory multiple myeloma and certain types of lymphoma, respectively [14][15].

Core Insights - The European Commission has approved Libtayo (cemiplimab) as an adjuvant treatment for adult patients with high-risk cutaneous squamous cell carcinoma (CSCC) after surgery and radiation, marking a significant advancement in treatment options for earlier-stage patients [1][2][4] - The approval is based on the results of the Phase 3 C-POST trial, which demonstrated a 68% reduction in the risk of disease recurrence or death compared to placebo, with a hazard ratio of 0.32 [1][2][6] Company Overview - Regeneron Pharmaceuticals, Inc. is a leading biotechnology company focused on developing innovative treatments for serious diseases, including various cancers [27][28] - The company has a strong pipeline, with nearly half of its investigational assets in oncology, including Libtayo, which serves as a backbone for many investigational combinations [9][27] Clinical Trial Details - The C-POST trial was a randomized, placebo-controlled, double-blind study involving 415 patients at high risk of CSCC recurrence, who had completed surgery and postoperative radiation therapy [6][7] - Participants received either Libtayo or placebo for up to 48 weeks, with specific dosing regimens outlined [7] Treatment Implications - Libtayo is currently the standard of care for advanced CSCC in Europe, and its approval for earlier-stage patients could significantly alter treatment paradigms [1][4] - The incidence of non-melanoma skin cancer (NMSC), including CSCC, is expected to increase by 40% in the EU over the coming decades, highlighting the need for effective treatments [4] Safety Profile - The safety profile of Libtayo in the adjuvant setting is consistent with its known profile in advanced cancers, with grade ≥3 adverse events occurring in 24% of patients receiving Libtayo [3] - Common adverse events included fatigue, pruritus, rash, and diarrhea, with treatment discontinuation due to adverse events occurring in 10% of Libtayo patients [3]

Core Insights - Sensei Biotherapeutics announced results from the dose expansion portion of its Phase 1/2 trial for solnerstotug, a monoclonal antibody targeting VISTA, at the ESMO Congress 2025 [1][2] Study Design and Patient Population - The Phase 1 dose expansion is a multi-center, open-label study evaluating solnerstotug as monotherapy and in combination with Libtayo, enrolling 44 patients with "hot" tumor types and 20 patients with "cold" tumor types [2] - Among the "hot tumor" patients, 41 had previously received PD-(L)1 therapy and progressed, indicating a challenging prognosis for these patients [3][4] Efficacy Results - In the higher 15 mg/kg dose cohort, the overall 6-month progression-free survival (PFS) rate was 50% among PD-(L)1 resistant patients, which is significantly higher than historical benchmarks [6][7] - Six clinical responses were observed at the 15 mg/kg dose, including five in patients with PD-(L)1 resistant tumors, while no responses were noted at the 3 mg/kg dose [5][6] Safety Profile - Solnerstotug was well tolerated, with only six mild (Grade 1) cytokine release syndrome (CRS) events reported, all manageable [8][9] - The safety profile remains consistent with prior data and compares favorably to other checkpoint inhibitor combinations [8] Future Development Plans - Sensei plans to initiate two Phase 2 studies in 2026, subject to FDA feedback and capital raising, focusing on NSCLC and Merkel Cell Carcinoma [11][12] - The first trial will be a randomized study comparing solnerstotug plus a PD-(L)1 inhibitor against chemotherapy in patients who failed anti-PD-(L)1 treatment [11] - The second trial will be a single-arm study in PD-(L)1 resistant Merkel Cell Carcinoma patients, with potential for accelerated approval [12] Unique Mechanism of Action - The combination of solnerstotug and cemiplimab may demonstrate a unique pattern of delayed, durable responses, indicating a complementary mechanism to PD-(L)1 therapies [10][9]

Core Opinion - Regeneron Pharmaceuticals received a positive opinion from the European Medicines Agency's Committee for Medicinal Products for Human Use for Libtayo as an adjuvant treatment for adult patients with high-risk cutaneous squamous cell carcinoma (CSCC) after surgery and radiation [1][2] Clinical Trial Results - The Phase 3 C-POST trial demonstrated that Libtayo significantly reduced the risk of disease recurrence or death by 68% compared to placebo, with a hazard ratio of 0.32 and a p-value of less than 0.0001 [1][2] - In the trial, locoregional or distant recurrence rates were lower in the Libtayo group (4% vs. 17% for locoregional and 5% vs. 13% for distant recurrence) compared to placebo [2] Safety Profile - The safety profile of Libtayo in this trial was consistent with its known safety profile in advanced cancers, with adverse events occurring in 91% of patients receiving Libtayo and 89% in the placebo group [3] - Grade ≥3 adverse events were reported in 24% of the Libtayo group compared to 14% in the placebo group, with hypertension being the only grade ≥3 adverse event occurring in more than 2% of patients in the Libtayo arm [3] Trial Design - The C-POST trial was a randomized, placebo-controlled, double-blind, multicenter global study involving 415 patients at high risk of CSCC recurrence [4][5] - Participants received either Libtayo or placebo for up to 48 weeks, with specific dosing regimens outlined [5] About CSCC - Cutaneous squamous cell carcinoma (CSCC) is a common type of non-melanoma skin cancer, with a projected 40% increase in incidence in the EU by 2040 [6] Regeneron's Commitment to Cancer Treatment - Regeneron aims to develop transformative medicines for cancer, leveraging scientific innovation and a deep understanding of biology and genetics [7][8] - The company has a robust pipeline focused on various solid tumors and blood cancers, with Libtayo being a key asset [8][27]

Core Insights - Regeneron Pharmaceuticals announced new data from the Phase 3 C-POST trial for Libtayo (cemiplimab), focusing on a patient-centric every 6-week dosing regimen for high-risk cutaneous squamous cell carcinoma (CSCC) [1][2] Group 1: Clinical Data and Trial Results - The C-POST trial data will be presented at the ESMO 2025 Meeting, highlighting the efficacy and safety of Libtayo as an adjuvant treatment for CSCC [1][2] - Patients in the trial initially received 350 mg of Libtayo every 3 weeks for 12 weeks, with most switching to every 6-week dosing thereafter, while the safety profile remained consistent with previous findings [2] Group 2: Regulatory and Approval Status - The new data supports the FDA approval of Libtayo as the first immunotherapy for adjuvant treatment of adult patients with high-risk CSCC following surgery and radiation [2] Group 3: Company Overview and Pipeline - Regeneron is focused on developing therapies for over 30 types of solid tumors and blood cancers, with nearly half of its pipeline dedicated to oncology assets [6][26] - Libtayo is a fully human monoclonal antibody targeting the PD-1 immune checkpoint, approved in over 30 countries for various indications, including advanced CSCC and non-small cell lung cancer [8][9]

Core Insights - Immuneering Corporation (IMRX) has entered into a clinical supply agreement with Eli Lilly (LLY) for the KRAS G12C inhibitor, olomorasib (LY3537982) [1] - The agreement supports a planned phase II study evaluating Immuneering's atebimetinib (IMM-1-104) in combination with olomorasib for treating advanced KRAS G12C-mutant non-small cell lung cancer (NSCLC) [2] - Immuneering's shares rose by 21.7% following the announcement, and the stock has increased by 170.5% year-to-date compared to the industry's 4.1% rise [2][3] Agreement Details - The combination of atebimetinib and olomorasib is expected to provide a vertical blockade of the RAS-MAPK pathway, with preclinical data showing enhanced tumor regression and prolonged survival compared to monotherapy [5] - This is Immuneering's second collaboration announcement in 2025, following a similar agreement with Regeneron Pharmaceuticals to evaluate atebimetinib with Libtayo for advanced NSCLC [6][7] - In both agreements, Immuneering retains full worldwide development and commercialization rights to atebimetinib [8] Ongoing Studies - Immuneering is advancing atebimetinib in other cancer studies, including a phase IIa study in combination with modified gemcitabine/nab-paclitaxel for first-line pancreatic cancer [9] - Preliminary data from this study indicated a 94% overall survival and 72% progression-free survival at six months, with updated data expected later in Q3 2025 [10] - The company plans to initiate a pivotal study for atebimetinib in combination with modified gemcitabine/nab-paclitaxel in 2026, pending regulatory feedback [11]

Core Insights - Sensei Biotherapeutics, Inc. announced the presentation of clinical data from the Phase 1/2 trial of solnerstotug, both alone and in combination with Libtayo, at the ESMO Congress 2025 in Berlin [1] Company Overview - Sensei Biotherapeutics is a clinical stage biotechnology company focused on developing next-generation therapeutics for cancer patients [2] - The company utilizes its TMAb™ platform to create conditionally active therapeutics that target immunosuppressive signals in the tumor microenvironment [2] - Solnerstotug is the lead product candidate, designed to block the VISTA checkpoint selectively in low pH tumor environments, enhancing T cell activation [2]

Core Insights - Libtayo (cemiplimab) has shown a 68% reduction in the risk of disease recurrence or death in high-risk cutaneous squamous cell carcinoma (CSCC) patients after surgery, with significant reductions in locoregional (80%) and distant recurrence (65%) compared to placebo [1][5][6] - The Phase 3 C-POST trial results were presented at the 2025 ASCO Annual Meeting and published in the New England Journal of Medicine, establishing Libtayo as the first immunotherapy to demonstrate a statistically significant benefit in the adjuvant setting for high-risk CSCC [2][4] - Regulatory applications for Libtayo have been submitted in the United States and European Union for the treatment of adjuvant CSCC [1][7] Group 1: Trial Results - The C-POST trial was a randomized, placebo-controlled, double-blind study involving 415 patients, with 209 receiving Libtayo and 206 receiving placebo [9][10] - The median duration of follow-up was 24 months, with updated overall survival (OS) data suggesting an emerging benefit for Libtayo (HR: 0.78; 95% CI: 0.39-1.56) [3] - Disease-free survival (DFS) at two years was 87% for Libtayo versus 64% for placebo, with median DFS not reached for Libtayo-treated patients [5] Group 2: Safety and Efficacy - Safety assessments indicated that adverse events (AEs) of any grade occurred in 91% of patients in the Libtayo arm, with grade ≥3 AEs occurring in 24% [6] - The most common AEs in the Libtayo arm included fatigue, pruritus, rash, diarrhea, and hypothyroidism, with treatment discontinuations due to AEs at 10% for Libtayo compared to 2% for placebo [6] - An exploratory analysis showed that Libtayo reduced the risk of disease recurrence or death by 72% in tumors with PD-L1 ≥1% and by 68% in tumors with PD-L1 <1% [4] Group 3: Industry Context - The results from the C-POST trial highlight the critical unmet need for systemic therapies in high-risk CSCC, as surgery and radiotherapy remain the primary treatments [2] - Libtayo's promising results position it as a potential new standard of care in the adjuvant setting for high-risk CSCC patients [4] - Regeneron is actively working with global regulatory authorities to expedite the availability of Libtayo for patients [4]

Core Insights - Sensei Biotherapeutics reported favorable clinical data for its lead product candidate, solnerstotug, in patients with PD-(L)1-resistant cancers, indicating a potential breakthrough in treatment options for this challenging patient population [2][3] - The company has completed enrollment for its dose expansion cohort and expects to present full data by the end of 2025 [1][6] - Sensei's cash position is strong, with a runway expected to last into the second quarter of 2026 [5] Clinical Development - Solnerstotug is designed to target the immune checkpoint VISTA, which is associated with poor survival rates in various cancers [3] - The ongoing Phase 1/2 clinical trial is evaluating solnerstotug both as a monotherapy and in combination with Regeneron's PD-1 inhibitor, Libtayo [4] - Preliminary data from the trial shows response rates nearly three times higher than historical expectations for PD-(L)1-resistant patients [2][6] Financial Performance - As of March 31, 2025, the company reported cash, cash equivalents, and marketable securities totaling $34.3 million, down from $41.3 million at the end of 2024 [5] - Research and Development (R&D) expenses decreased to $3.7 million in Q1 2025 from $4.9 million in Q1 2024, primarily due to lower personnel and facility costs [7] - General and Administrative (G&A) expenses also saw a decrease, totaling $3.5 million in Q1 2025 compared to $3.8 million in Q1 2024 [8] Operational Highlights - The company has completed enrollment of 63 patients in the dose expansion stage, including 10 patients with microsatellite stable colorectal cancer (MSS CRC) and 53 patients with PD-(L)1-resistant "hot" tumors [6] - Sensei participated in various conferences to discuss its clinical progress and strategic direction, enhancing its visibility in the oncology sector [6]