Hopewell Therapeutics Announces Sublicense of Proprietary Lipid Nanoparticles for Novel Cancer Vaccine to Foxcroft Therapeutics

On March 5, 2026 Hopewell Therapeutics, Inc., a Boston-based next-generation lipid nanoparticle (LNP) company ("Hopewell"), reported that it entered into a sublicense agreement with Foxcroft Therapeutics, Inc., the developer of novel cancer vaccines ("Foxcroft"), granting Foxcroft a global sublicense to certain of its tissue-targeting LNPs (ttLNPs). Hopewell and Foxcroft will collaborate on their evaluation of Hopewell’s ttLNPs as potential delivery vehicles for Foxcroft’s cancer vaccines.

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Hopewell is currently developing ttLNPs as a delivery vehicle for a broad range of clinical and therapeutic applications, including vaccines, gene therapies, immune-oncology, and pulmonary therapies, targeting tissues in the lung, brain, bone marrow, ovaries, spleen, lymph nodes, kidneys, liver, and other vital organs. Pre-clinical testing has demonstrated Hopewell ttLNPs to perform more effectively than other LNPs available in the market.

In February 2025, Dr. Qiaobing Xu, Founder and President of Hopewell, authored a paper entitled "Antitumour vaccination via the targeted proteolysis of antigens isolated from tumour lysates," which described a novel tumor lysate-based cancer vaccine, delivered through LNPs that target the lymph nodes.1

In September 2025, Foxcroft obtained from Tufts University the exclusive global license to this cancer vaccine technology. The present Hopewell sublicense gives Foxcroft access to multiple ttLNPs as candidate delivery vehicles for its vaccine. Foxcroft plans to conduct confirmatory testing of vaccine formulations in large mammal trials, starting with a canine clinical trial expected to commence later this year.

The Hopewell sublicense includes a significant, non-refundable, up-front license fee to Hopewell, royalties on net sales, regulatory milestone payments, and up to $100 million of sales-based milestone payments.

"Hopewell is thrilled to announce the first sublicense of its ttLNP technology in the exciting field of cancer vaccines," commented Dr. Xu. "We look forward to supporting Foxcroft to bring this important anti-cancer therapy to human testing as quickly as possible."

Foxcroft’s management stated, "We recognize that Hopewell’s LNP library provides superior targeted delivery solutions for a number of clinical and therapeutic applications, including our vaccine. Over the months ahead, we are excited to work further with the Hopewell team to further evaluate the sublicensed LNPs."

(Press release, Hopewell Therapeutics, MAR 5, 2026, View Source [SID1234663318])

Lineage Cell Therapeutics Reports Fourth Quarter and Full Year 2025 Financial Results and Provides Business Update

On March 5, 2026 Lineage Cell Therapeutics, Inc. (NYSE American and TASE: LCTX), a clinical-stage biotechnology company developing novel allogeneic, or "off the shelf", cell therapies for serious medical conditions, reported its fourth quarter and full year 2025 financial and operating results and will host a conference call today at 4:30 p.m. Eastern Time to discuss these results and to provide a business update.

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"2025 was a very productive year for the Lineage team," stated Brian M. Culley, Lineage CEO. "Our mission is to pioneer the emerging field of allogeneic cell therapy outside of oncology by applying our proprietary cell manufacturing technology platform, AlloSCOPE (Allogeneic, Scalable, Consistent, Off-the-shelf, Pluripotent Cell Engineering), to the production and transplantation of differentiated cell types, which are intended to replace the cells which a patient has lost, or lost function of, due to various conditions. Throughout 2025, we made meaningful progress in strengthening our scientific, operational and strategic foundations, and reported notable events in support of our mission including:

Continued progress with the OpRegen cell therapy program, including achievement of the first of the $620 million of milestone payments available under our collaboration with Roche and Genentech; a milestone rooted in our manufacturing expertise and reflecting years of investment to optimize our in-house production processes.
Solidified our position as a leader in allogeneic cell process development by demonstrating success with our proprietary AlloSCOPE manufacturing platform, reporting current Good Manufacturing Practice (cGMP) production for each of two programs, from a master and working cell bank system which we expect, in its current form, should enable a production capability of millions of doses of a single-administration product, all from our in-house facility.
Entered a research collaboration with William Demant Invest A/S, intended to fund all currently planned preclinical development of our ReSonance program, demonstrating the ability of our technology platform to produce partnerable programs efficiently, rapidly and economically.
Launched a new cell therapy research initiative, with our initial focus on addressing the issue of large-scale production of undifferentiated pluripotent cells, which if successful could be evaluated for the production of islet cells to support a potential treatment of Type 1 Diabetes.
Treated the first ever chronic spinal cord injury (SCI) patient in the DOSED (Delivery of Oligodendrocyte Progenitor Cells for Spinal Cord Injury: Evaluation of a Novel Device) clinical study, the third clinical study of OPC1, a study evaluating a potentially superior delivery system, designed to deliver our proprietary cells over several minutes and without the need for stopping patient ventilation during administration."
Mr. Culley continued, "2026 will be an exciting year as we advance our therapeutic candidates and pursue our long-term goal of creating a pipeline of similar cell-based assets, some of which we might choose to develop internally and some which we might seek to partner, but all based on our core technology and platform. Our priorities in 2026 will include achieving key clinical and financial milestones, advancing our manufacturing capability, and maintaining the organizational focus necessary to execute with consistency against these goals."

Select Business Highlights

RG6501 (OpRegen Cell Therapy)
Achieved the first milestone available under worldwide collaboration with Roche and Genentech, based on manufacturing and clinical advancements related to the OpRegen cell therapy program.
Positive RG6501 (OpRegen cell therapy) Phase 1/2a clinical study 36 month results featured at Clinical Trials at the Summit (CTS) 2025, suggest evidence of sustained gains in visual acuity and structural support of the retina.
Positive long-term clinical outcomes reported following a single administration of OpRegen cell therapy.
Clinical data reported at 12-, 24-, and 36-months for Cohort 4 of the Phase 1/2a study (12 patients) continues to demonstrate a consistent and durable treatment effect, with OpRegen-treated eyes exhibiting mean best corrected visual acuity (BCVA) scores above baseline at each of these timepoints in these patients with less advanced disease.
Notably, five patients who received significant coverage of OpRegen cell therapy across their geographic atrophy (GA) lesion are demonstrating long-term outcomes consistent with meaningful disease stabilization and even improvement.
Ongoing execution of Lineage’s contributions to its collaboration with Roche and Genentech. The ongoing Phase 2a GAlette Study is currently enrolling at 17 clinical sites in the U.S. and Israel.
In addition to testing other surgical parameters, Genentech currently plans to evaluate proprietary surgical delivery devices that have potential advantages over available off-the-shelf devices in the Phase 2a GAlette Study.
Ongoing efforts to further support development of OpRegen cell therapy under a separate services agreement with Genentech, signed May 2024, including: (i) activities to support the ongoing Phase 1/2a study long term follow-up and the currently enrolling Phase 2a GAlette Study; and (ii) additional technical training and materials related to our cell therapy technology platform to support commercial manufacturing strategies.
ReSonance (ANP1)
Announced research collaboration with William Demant Invest A/S (WDI) to jointly advance preclinical development of ReSonance (ANP1) over a term of three years; up to $12 million of development costs to be contributed by WDI in a collaboration which is intended to cover planned preclinical development activities, including cell manufacturing, proof-of-concept studies, translational/functional models, delivery development, outcome measures, regulatory strategy, and market analysis.
Demonstrated AlloSCOPE Platform Manufacturing Capability
Successfully completed a production run for two product candidates, each produced from a customized, two-tiered cGMP cell banking system, highlighting the application of the Lineage platform across multiple programs.
This production process utilizes a genetically-stable master cell bank created from a single, well-characterized pluripotent cell line, to generate a working cell bank, which then provides the source material for a final cell-based product candidate.
This demonstrated cGMP production process should enable the ability to produce millions of doses of a cost-effective, scalable and consistent supply of an allogeneic, cell-based product derived from a single initial cell line, that can be applied across multiple programs.
ILT1
Launched new cell therapy research initiative, inverting the risk profile of traditional cell therapy development, focused on deploying the company’s manufacturing capability to address the issue of large-scale production of undifferentiated pluripotent cells, with the initial goal of establishing a production modality that can support the entire production process through differentiation in a dynamic culturing system, which if successful could potentially solve a major hurdle to commercialization of islet cell therapy product candidates.
OPC1
First chronic SCI participant treated in the DOSED study.
First treated participant was a neurologically complete SCI injury (American Spinal Injury Association Impairment Scale [AIS] grade A), with a single neurological level of injury (NLI) from levels T1 to T10, and the novel delivery system successfully administered a one-time injection of OPC1.
No significant safety events were reported 180 days following treatment in the first chronic SCI participant.
Opened second clinical site in the DOSED study, Rancho Research Institute, in conjunction with Rancho Los Amigos National Rehabilitation Center.
Lineage resubmitted its Clinical Trial (CLIN2) grant application to support the DOSED study to the California Institute for Regenerative Medicine (CIRM) in January 2026, and CIRM continues to review Lineage’s application.
Balance Sheet Highlights

Cash, cash equivalents, and marketable securities of $55.8 million as of December 31, 2025, together with the approximate $5.4 million in proceeds from warrant exercises in March 2026, is expected to support planned operations into Q2 2028.

Fourth Quarter Operating Results

Revenues: Revenue is generated primarily from collaboration revenues, royalties, and other revenues. Total revenues for the three months ended December 31, 2025 were approximately $6.6 million, a net increase of $3.7 million as compared to $2.9 million for the same period in 2024. The increase was primarily driven by higher collaboration revenue recognized under our worldwide collaboration and license agreement with Roche (the "Roche Agreement") following the achievement of the first milestone, along with the new research collaboration agreement with WDI.

Operating Expenses: Operating expenses are comprised of research and development ("R&D") expenses and general and administrative ("G&A") expenses. Total operating expenses for the three months ended December 31, 2025 were $13.2 million, an increase of $5.2 million as compared to $8.0 million for the same period in 2024.

R&D Expenses: R&D expenses for the three months ended December 31, 2025 were $8.2 million, an increase of $4.8 million as compared to $3.4 million for the same period in 2024. The net increase was primarily driven by $2.1 million for our OpRegen program expenses and $2.7 million for our preclinical and other undisclosed programs.

G&A Expenses: G&A expenses for the three months ended December 31, 2025 were approximately $4.8 million, an increase of $0.4 million as compared to $4.4 million for the same period in 2024. The net increase was primarily driven by personnel costs.

Loss from Operations: Loss from operations for the three months ended December 31, 2025 was $6.5 million, an increase of $1.4 million as compared to $5.1 million for the same period in 2024.

Other Income/(Expenses): Other income/(expenses) for the three months ended December 31, 2025 reflected other income of $2.2 million, compared to other income of approximately $1.9 million for the same period in 2024. The net increase was primarily driven by exchange rate fluctuations related to Lineage’s international subsidiaries and no warrant-related financing transaction costs incurred as compared to the prior year’s quarter, partially offset by the non-cash quarterly fair value remeasurement expense of the warrant liabilities.

Net Income/Loss Attributable to Lineage: The net income/loss attributable to Lineage for the three months ended December 31, 2025 was net income of $0.9 million, or $0.004 per share (basic and diluted), compared to a net loss of $3.3 million, or $0.02 per share (basic and diluted), for the same period in 2024.

Full Year Operating Results

Revenues: Revenue is generated primarily from collaboration revenues, royalties, and other revenues. Total revenues for the year ended December 31, 2025 were $14.6 million, a net increase of $5.1 million as compared to $9.5 million for the same period in 2024. The increase was primarily driven by higher collaboration revenue recognized under the Roche Agreement following the achievement of the first milestone, along with the new research collaboration agreement with WDI.

Operating Expenses: Operating expenses are comprised of R&D expenses and G&A expenses. Total operating expenses for the year ended December 31, 2025 were $51.2 million, an increase of $20.2 million as compared to $31.0 million for the same period in 2024. The increase was primarily driven by $14.8 million expense recognized during the year for the loss on impairment for the intangible asset related to the VAC platform.

R&D Expenses: R&D expenses for the year ended December 31, 2025 were $17.7 million, an increase of approximately $5.2 million as compared to $12.5 million for the same period in 2024. The increase was primarily driven by $1.6 million for our OpRegen program, $0.7 million increase for our ANP1 program, $0.2 million for our OPC1 program and $2.8 million for our preclinical programs and other undisclosed programs.

G&A Expenses: G&A expenses for the year ended December 31, 2025 were $18.5 million, an increase of approximately $0.3 million as compared to $18.2 million for the same period in 2024. The net increase was primarily driven by $0.2 million in personnel costs and $0.1 million for services provided by third parties.

Loss from Operations: Loss from operations for the year ended December 31, 2025 was $36.6 million, an increase of $15.1 million as compared to $21.5 million for the same period in 2024.

Other Income/(Expenses): Other income (expenses) for the year ended December 31, 2025 reflected other expense of $32.0 million, compared to other income of $2.9 million for the same period in 2024. The net change of $34.9 million was largely attributable to the non-cash fair value remeasurement expense of the warrant liabilities of $37.9 million, primarily due to an increase in our share price as compared to the prior year period. This increase in expense was partially offset by exchange rate fluctuations related to Lineage’s international subsidiaries and lower warrant-related transaction costs incurred as compared to the prior year in connection with the November 2024 financing.

Net Loss Attributable to Lineage: The net loss attributable to Lineage for the year ended December 31, 2025 was $63.5 million, or $0.28 per share (basic and diluted), compared to a net loss of $18.6 million, or $0.09 per share (basic and diluted), for 2024. The difference was primarily driven by the non-cash fair value remeasurement of the warrant liabilities and the loss on impairment expense related to a 2019 acquisition.

Conference Call and Webcast

Interested parties may access the conference call on March 5, 2026, by dialing (888) 596-4144 from the U.S. and Canada and should request the "Lineage Cell Therapeutics Call". A live webcast of the conference call will be available online in the Investors section of Lineage’s website. A replay of the webcast will be available on Lineage’s website for 30 days and a telephone replay will be available through March 12, 2026, by dialing (800) 770-2030 from the U.S. and Canada and entering conference ID number 3958367.

About the AlloSCOPE (Allogeneic, Scalable, Consistent, Off-the-shelf, Pluripotent Cell Engineering) Platform

The AlloSCOPE (Allogeneic, Scalable, Consistent, Off-the-shelf, Pluripotent Cell Engineering) platform highlights the key attributes of Lineage’s in-house technology and describes a differentiation and production modality from which Lineage can manufacture millions of doses of an allogeneic, cell-based product derived from a single initial cell line, conferring consistent, cost-effective, and scalable cell-based production and which can be applied across multiple programs. From our proprietary AlloSCOPE platform, we successfully completed a current Good Manufacturing Practice ("cGMP") production run from a custom, two-tiered cell banking system, featuring a genetically-stable master cell bank (MCB) created from a single, well-characterized pluripotent cell line, which generated a working cell bank (WCB), which then provided the source material for two final cell-based product candidates.

(Press release, Lineage Cell Therapeutics, MAR 5, 2026, View Source [SID1234663301])

Kestrel Therapeutics Announces IND Clearance by U.S. FDA of KST-6051, a Potential Best-in-Class Pan-KRAS Inhibitor, Enabling Initiation of Phase 1 Trial

On March 5, 2026 Kestrel Therapeutics Inc. ("Kestrel" or the "Company"), a clinical stage biotechnology company developing next-generation small-molecule inhibitors targeting mutant KRAS, reported that the U.S. Food and Drug Administration (FDA) has cleared its Investigational New Drug (IND) application for KST-6051, an investigational, oral, small-molecule inhibitor designed to target KRAS.

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Kestrel is advancing KST-6051 into the clinic and expects to initiate a first-in-human Phase 1 dose-escalation clinical trial FALCON by the end of the first quarter. The trial, designed to evaluate safety, tolerability and preliminary anti-tumor activity, will enroll patients with advanced or metastatic KRAS-mutant solid tumors, including pancreatic ductal adenocarcinoma (PDAC), colorectal cancer (CRC), non-small cell lung cancer (NSCLC), and others.

"IND approval for KST-6051 is a significant milestone for Kestrel and an important step forward for patients with KRAS-driven cancers," said Dr. Frank G. Haluska, President and Chief Executive Officer of Kestrel Therapeutics. "KST-6051 represents our next-generation approach to pan-KRAS inhibition, leveraging proprietary and unique Switch-II pocket chemistry to target KRAS in both the ON- and OFF-states. We are excited to initiate our first study as we work toward initial clinical readouts anticipated in late 2026."

About KST-6051

KST-6051 is a potential best-in-class, oral pan-KRAS inhibitor, developed for the treatment of KRAS-driven cancers. KST-6051 is a potent and selective inhibitor of KRAS with activity against KRAS in both its active (GTP-bound) and inactive (GDP-bound) states. Preclinical data demonstrate robust on-target pathway modulation, anti-proliferative activity, and efficacy at well-tolerated doses in multiple human KRAS mutant tumor models. The Company is initiating a Phase 1 study in patients with KRAS-mutant advanced/metastatic solid tumors. Its clinical development will ultimately address pancreatic ductal adenocarcinoma (PDAC), colorectal cancer (CRC), non-small cell lung cancer (NSCLC), and other KRAS-driven malignancies.

(Press release, Kestrel Therapeutics, MAR 5, 2026, View Source [SID1234663319])

NextCure Provides Business Update and
Reports Full Year 2025 Financial Results

On March 5, 2026 NextCure, Inc. (Nasdaq: NXTC), a clinicaal-stage biopharmaceutical company committed to discovering and developing novel, first-in-class, and best-in-class therapies to treat cancer, reported a business update and announced full year 2025 financial results.

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"2026 is on track to be transformational for NextCure, as we set the stage to present clinical dose escalation data from the Phase 1 trial for SIM0505, in development for multiple cancers," said Michael Richman, President and CEO of NextCure. "Since acquiring the program in June of 2025, we have made rapid clinical and regulatory progress and soon expect to begin enrolling platinum resistant ovarian cancer patients in the Phase 1 dose optimization study. To accelerate the program, we plan to double the number of U.S. trial sites and expand our footprint into multiple other countries."

Business Highlights and Near-Term Milestones

SIM0505 (CDH6 ADC): Phase 1 dose escalation data expected in Q2 2026

SIM0505 is a novel ADC directed to cadherin-6 (CDH6 ADC), overexpressed in several cancers including ovarian cancer, with limited expression in healthy tissues. SIM0505 features a proprietary topoisomerase 1 inhibitor (TOPOi) payload, designed for broad anti-tumor activity, fast systemic clearance and an improved potential therapeutic window.

● Data from the Phase 1 open-label dose escalation study is expected to be presented in the second quarter of 2026, including results from patients in the U.S. and China.
● The study (NCT06792552) is evaluating SIM0505 in patients with advanced solid tumors with a focus on gynecological cancers and an emphasis on platinum resistant ovarian cancer (PROC).
● Initiation of Phase 1 dose optimization study in ovarian cancer expected in the second quarter of 2026 with a continued focus on PROC. The Company anticipates doubling the number of trial sites in the second half of 2026, including the activation of sites in Canada and Europe, with continued study site additions in 2027.

LNCB74 (B7-H4 ADC): Ongoing enrollment in Phase 1 dose escalation

LNCB74 is a novel ADC directed to B7-H4, overexpressed in several cancers, with limited expression in healthy tissues. LNCB74 features a proprietary tumor-selective cleavable linker and a tubulin inhibitor monomethyl auristatin E (MMAE) payload.

● Higher dose cohort enrollment initiated in the ongoing open-label Phase 1 dose escalation study (NCT06774963), following the November 2025 protocol amendment announcement. The next dose cohort will prioritize patients with high B7-H4 expression in breast and gynecological cancers, as well as the inclusion of patients with adenoid cystic carcinoma type 1.
● NextCure continues to plan to provide a trial update in the second half of 2026.

Financial Results for the Full Year Ended December 31, 2025

● Cash, cash equivalents, and marketable securities as of December 31, 2025 were $41.8 million as compared to $68.6 million as of December 31, 2024. The decrease of $26.8 million was primarily due to cash used to fund operations of $49.6 million, including $13.5 million of upfront license fees and milestone payments to Simcere Zaiming Pharmaceutical Co., Ltd. for the rights to SIM0505, partially offset by proceeds of $22.3 million from equity sales including a $21.5 million private placement of common stock in November 2025. NextCure expects current financial resources to be sufficient to fund operating expenses and capital expenditures into the first half of 2027 through proof-of-concept for SIM0505.
● Research and development expenses were $44.9 million for the full year ended December 31, 2025, as compared to $41.5 million for the full year ended December 31, 2024. The increase of $3.4 million was due to $18.5 million of license fees and milestone payments for SIM0505 partially offset by lower costs related to deprioritized programs, lower preclinical development costs and lower personnel-related costs.
● General and administrative expenses were $12.7 million for the full year ended December 31, 2025, as compared to $15.7 million for the full year ended December 31, 2024. The decrease of $3.0 million was primarily related to lower personnel costs.
● Net loss was $55.8 million for the full year ended December 31, 2025, as compared to a net loss of $55.7 million for the full year ended December 31, 2024. Net loss for the year ended December 31, 2025 was driven by higher research and development costs and lower other income of $2.3 million, partially offset by lower general and administrative costs and lower restructuring charges.

About SIM0505

SIM0505 is a novel antibody drug conjugate (ADC) directed to cadherin-6 (CDH6 ADC), featuring a proprietary topoisomerase 1 inhibitor (TOPOi) payload. The ADC is designed for broad anti-tumor activity, fast systemic clearance and an improved potential therapeutic window. SIM0505 is being evaluated in an open-label, Phase 1 study for the potential treatment of advanced solid tumors, including ovarian cancer, with an emphasis on platinum resistant ovarian cancer. NextCure holds

exclusive global rights for SIM0505, excluding China, Hong Kong, Macau, and Taiwan which are retained by Simcere Zaiming Pharmaceutical Co., Ltd.

About LNCB74

LNCB74 is a novel antibody drug conjugate (ADC) directed to B7-H4, featuring a proprietary tumor-selective cleavable linker and a tubulin inhibitor monomethyl auristatin E (MMAE) payload. LNCB74 is being evaluated in an open-label, Phase 1 dose escalation study for the potential treatment of advanced solid tumors. NextCure shares global co-development rights with LigaChem Biosciences, Inc. through a 50-50 cost share arrangement.

(Press release, NextCure, MAR 5, 2026, View Source [SID1234663302])

Erasca and Tango Therapeutics Enter into Clinical Collaboration to Evaluate Combination of ERAS-0015 and Vopimetostat

On March 5, 2026 Erasca, Inc. (Nasdaq: ERAS), a clinical-stage precision oncology company singularly focused on discovering, developing, and commercializing therapies for patients with RAS/MAPK pathway-driven cancers, reported a clinical trial collaboration and supply agreement (CTCSA) with Tango Therapeutics, Inc. (Nasdaq: TNGX; "Tango") to evaluate Erasca’s pan-RAS molecular glue, ERAS-0015, with Tango’s PRMT5 inhibitor, vopimetostat (TNG462).

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"We’ve disclosed encouraging early clinical activity for our potential best-in-class molecular glue, ERAS-0015, including first clinical responses in multiple patients with differing tumor types and RAS mutations at just 1/10th of the dose at which first clinical responses were observed with RMC-6236," said Jonathan E. Lim, M.D., Erasca’s chairman, CEO, and co-founder. "Combining ERAS-0015 with Tango’s potentially first-in-class PRMT5 inhibitor represents a promising opportunity to redefine the standard of care in patients with MTAP-deleted RAS-mutant (MTAPdel RASm) cancers, where treatment options remain limited. We are excited to partner with Tango to evaluate this approach in these patients with high unmet needs."

This agreement will support a Phase 1/2 clinical trial evaluating ERAS-0015 in combination with vopimetostat in patients with MTAPdel pancreatic or MTAPdel RASm non-small cell lung cancer (NSCLC). Erasca will supply ERAS-0015 free of charge, and Tango will be the trial sponsor. Each company will retain commercial rights to their respective compound, and the agreement is mutually non-exclusive.

Nearly all MTAP-deleted pancreatic cancers and 30% of MTAP-deleted NSCLC tumors harbor co-occurring RAS mutations, creating a dependency that makes these cancer cells particularly susceptible to simultaneous RAS and PRMT5 inhibition. Combining a pan-RAS molecular glue with a PRMT5 inhibitor may provide a differentiated, dual-targeted approach designed to shut down the RAS signaling pathway and more strongly suppress PRMT5 in MTAP-deleted tumor cells, potentially leading to deeper and more durable responses and reducing the likelihood of resistance in these difficult-to-treat cancers.

About ERAS-0015
ERAS-0015 is an oral, highly potent pan-RAS molecular glue designed to inhibit RAS signaling with a potential best-in-class profile. Erasca is evaluating ERAS-0015 in the AURORAS-1 Phase 1 trial in patients with RAS-mutant solid tumors. Early dose escalation data in AURORAS-1 demonstrated favorable safety and tolerability, well-behaved, linear PK, and confirmed and unconfirmed responses in multiple patients across multiple tumor types with different RAS mutations, including confirmed and unconfirmed partial responses at doses as low as 8 mg once daily (QD). In preclinical studies versus RMC-6236, ERAS-0015 demonstrated approximately 8-21 times higher binding affinity to cyclophilin A (CypA) , approximately 5 times greater potency in RAS inhibition, and greater in vivo antitumor activity evidenced by achieving comparable or greater tumor growth inhibition or regression at doses that are as low as approximately one-tenth to one-fifth of the dose of RMC-6236. ERAS-0015 is also designed to prevent resistance against mutant-selective inhibitors through inhibition of RAS wildtype variants. In addition, ERAS-0015 has demonstrated favorable absorption, distribution, metabolism, and excretion (ADME) and pharmacokinetic (PK) properties in multiple animal species.

(Press release, Erasca, MAR 5, 2026, View Source [SID1234663320])