On March 9, 2026 AN2 Therapeutics, Inc. (Nasdaq: ANTX), a clinical-stage biopharmaceutical company developing novel small molecule therapeutics derived from its boron chemistry platform, reported that it has entered into a securities purchase agreement for a private placement that is expected to result in gross proceeds of approximately $40 million, before deducting placement agent fees and other expenses. The private placement includes participation from Coastlands Capital, Commodore Capital, Vivo Capital and other new and existing institutional investors.

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In the private placement, AN2 Therapeutics is selling 8,245,611 shares of common stock at a price of $2.85 per share and, in lieu of common stock to investors who so choose, pre-funded warrants to purchase up to 5,789,493 shares of common stock at a price of $2.84999 per pre-funded warrant. Each pre-funded warrant will have an exercise price of $0.00001 per share of common stock, will be exercisable immediately and will be exercisable until exercised in full, subject to ownership limitations. The private placement is expected to close on March 10, 2026, subject to the satisfaction of customary closing conditions. The private placement is being conducted in accordance with applicable Nasdaq rules and was priced to satisfy the "Minimum Price" requirement (as defined in the Nasdaq rules).

Leerink Partners is acting as exclusive placement agent for the private placement.

The securities sold in this private placement have not been registered under the Securities Act of 1933, as amended, or applicable state securities laws, and may not be offered or sold in the United States except pursuant to an effective registration statement or an applicable exemption from the registration requirements. AN2 Therapeutics has agreed to file a registration statement with the Securities and Exchange Commission registering the resale of the shares of common stock to be issued in the private placement and the shares of common stock issuable upon exercise of the pre-funded warrants to be issued in the private placement.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or jurisdiction.

(Press release, AN2 Therapeutics, MAR 9, 2026, View Source [SID1234663349])

On March 9, 2026 Hoffmann-La Roche reported results from the phase III persevERA Breast Cancer study evaluating investigational giredestrant in combination with palbociclib for people with oestrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative, locally advanced or metastatic breast cancer. The study did not meet its primary objective of a statistically significant improvement in progression-free survival in the intent-to-treat population versus letrozole plus palbociclib, but a numerical improvement was observed. The adverse events for the giredestrant combination were manageable and consistent with the known safety profiles of each individual treatment.

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"While persevERA didn’t meet its primary objective, we are confident in the potential of giredestrant to become a new standard-of-care endocrine therapy in early and advanced ER-positive breast cancer," said Levi Garraway, MD, PhD, Roche’s Chief Medical Officer and Head of Global Product Development. "We believe there is a path forward for combining giredestrant with a CDK4/6 inhibitor in the adjuvant setting and we are conducting further studies. The efficacy demonstrated in evERA and lidERA provides clear validation of the clinical activity of giredestrant and reinforces the strength of our expanding clinical development programme."
The giredestrant clinical development programme is made up of distinct studies designed to reflect the specific disease biology of each stage of breast cancer.3-7 Roche will continue to advance the clinical development programme to identify the people with ER-positive breast cancer who can derive the greatest benefit from giredestrant.

Giredestrant phase III clinical development programme

Trial Indication Regimen
lidERA Breast Cancer5 Adjuvant ER+/HER2- breast cancer Giredestrant vs. standard-of-care endocrine therapy (SoC ET)
persevERA Breast Cancer3 1L ER+/HER2- metastatic breast cancer
(endocrine-sensitive) Giredestrant + palbociclib vs. letrozole plus palbociclib
pionERA Breast Cancer4 1L ER+/HER2- metastatic breast cancer
(endocrine-resistant) Giredestrant + physician’s choice of CDK4/6 inhibitor vs. fulvestrant + physician’s choice of CDK4/6 inhibitor
evERA Breast Cancer6 2L+ ER+/HER2- metastatic breast cancer Giredestrant + everolimus vs. SoC ET + everolimus
heredERA Breast Cancer7 1L maintenance ER+/HER2+ metastatic breast cancer Giredestrant + Phesgo (pertuzumab, trastuzumab, and hyaluronidase subcutaneous) vs. Phesgo
evERA was the first positive phase III readout for giredestrant, followed by lidERA in the early-stage setting.8,9 The scientific rationale for lidERA was supported by prior results in the neoadjuvant setting, including the phase II coopERA trial showing that giredestrant was superior to an aromatase inhibitor in reducing malignant cell division (Ki67 levels).10 This growing body of evidence underscores the potential of giredestrant to become a new standard-of-care endocrine therapy across ER-positive early-stage and advanced breast cancer.

persevERA is the first of two distinct phase III studies in the first-line setting; the pionERA study of giredestrant in combination with physician’s choice of cyclin-dependent kinase (CDK)4/6 inhibitor in endocrine-resistant ER-positive, HER2-negative breast cancer is expected to readout in 2027.3,4

The United States Food and Drug Administration (FDA) recently accepted the New Drug Application based on the evERA data. In the coming weeks, Roche will submit the giredestrant phase III lidERA data in early-stage breast cancer to the FDA.

The full results from persevERA will be presented at an upcoming medical meeting.

About the persevERA Breast Cancer study
persevERA Breast Cancer [NCT04546009] is a phase III, randomised, double-blind, placebo-controlled, multicentre study evaluating the efficacy and safety of giredestrant plus palbociclib versus letrozole plus palbociclib as first-line treatment for people with oestrogen receptor-positive, human epidermal growth factor receptor 2-negative, locally advanced or metastatic breast cancer.3 The study enrolled 992 patients globally.3

The primary endpoint is investigator-assessed progression-free survival.3 Key secondary endpoints include overall survival, objective response rate, duration of response and safety.3

About giredestrant
Giredestrant is an investigational, oral, potent next-generation selective oestrogen receptor degrader and full antagonist.11

Giredestrant is designed to block oestrogen from binding to the oestrogen receptor, triggering its breakdown (known as degradation) and stopping or slowing down the growth of cancer cells.12

Giredestrant has an extensive clinical development programme and is being investigated in five company-sponsored phase III clinical trials that span multiple treatment settings and lines of therapy to benefit as many people as possible:

Giredestrant versus standard-of-care endocrine therapy (SoC ET) as adjuvant treatment in oestrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative early-stage breast cancer (lidERA Breast Cancer; NCT04961996)5
Giredestrant plus everolimus versus SoC ET plus everolimus in ER-positive, HER2-negative, locally advanced or metastatic breast cancer (evERA Breast Cancer; NCT05306340)6
Giredestrant plus palbociclib versus letrozole plus palbociclib in ER-positive, HER2-negative, endocrine-sensitive, recurrent locally advanced or metastatic breast cancer (persevERA Breast Cancer; NCT04546009)3
Giredestrant plus investigator’s choice of a cyclin-dependent kinase (CDK)4/6 inhibitor versus fulvestrant plus a CDK4/6 inhibitor in ER-positive, HER2-negative advanced breast cancer resistant to adjuvant endocrine therapy (pionERA Breast Cancer; NCT06065748)4
Giredestrant plus Phesgo (pertuzumab, trastuzumab, and hyaluronidase subcutaneous) versus Phesgo in ER-positive, HER2-positive locally advanced or metastatic breast cancer (heredERA Breast Cancer; NCT05296798)7
About oestrogen receptor (ER)-positive breast cancer
Globally, the burden of breast cancer continues to grow, with 2.3 million women diagnosed and 670,000 dying from the disease every year.13 Breast cancer remains the number one cause of cancer-related deaths amongst women, and the second most common cancer type.14

ER-positive breast cancer accounts for approximately 70% of breast cancer cases.15 In the US and EU5, an estimated 273,000 people are diagnosed in the early-stage setting, 88,000 people are diagnosed in first-line and 106,000 in the second and third-line setting combined.16

A defining feature of ER-positive breast cancer is that its tumour cells have receptors that attach to oestrogen, which can contribute to tumour growth.17

Despite treatment advances, ER-positive breast cancer remains particularly challenging to treat due to its biological complexity.18 In the early-stage setting, up to a third of people eventually experience disease recurrence on or after adjuvant endocrine therapy treatment.19-21 Additionally, many have to interrupt or stop treatment early due to safety or tolerability issues, thereby increasing the risk of death.22 In advanced settings, resistance to endocrine therapy – particularly following treatment with cyclin-dependent kinase inhibitors – increases the risk of disease progression an is associated with poor outcomes.15,23

There is an urgent need for more effective treatments that can delay clinical progression and reduce the burden of treatment on people’s lives.18,20,22-24

About Roche in breast cancer
Roche has been advancing breast cancer research for more than 30 years, and it continues to be a major focus of research and development. Our legacy began with the development of the first targeted therapy for human epidermal growth factor receptor 2-positive breast cancer, and we continue to push the boundaries of science to address the complexities of all breast cancer subtypes.

By leveraging our dual expertise in pharmaceuticals and diagnostics, we are dedicated to providing tailored treatment approaches and improving outcomes for every patient, from early to advanced stages of the disease. Together with our partners, we are relentlessly pursuing a cure, as we strive for a future where no one dies from breast cancer.

(Press release, Hoffmann-La Roche, MAR 9, 2026, View Source [SID1234663346])

On March 9, 2026 AstraZeneca and Daiichi Sankyo reported its supplemental Biologics License Application (sBLA) for Enhertu (trastuzumab deruxtecan) has been accepted and granted Priority Review in the US for the treatment of adult patients with HER2-positive breast cancer who have residual invasive disease after neoadjuvant HER2-targeted treatment.

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The Food and Drug Administration (FDA) grants Priority Review to applications for medicines that, if approved, would offer significant improvements over available treatment options by demonstrating safety or efficacy improvements, preventing serious conditions or enhancing patient compliance. The Prescription Drug User Fee Act date, the FDA action date for its regulatory decision, is anticipated during the third quarter of 2026.

Enhertu was recently granted Breakthrough Therapy Designation (BTD) by the FDA in this setting. BTD accelerates the development and regulatory review of potential new medicines intended to treat a serious condition and address a significant unmet medical need.

The sBLA also is being reviewed under Project Orbis, which provides a framework for concurrent submission and review of oncology medicines among participating international partners.

Around one in five breast cancers are considered HER2-positive, a subtype that is often associated with aggressive disease and poor prognosis.1-3 Currently, approximately half of patients with HER2-positive early breast cancer have residual disease following neoadjuvant treatment (before surgery), putting them at an increased risk of disease recurrence.4-9 Despite receiving additional treatment in the post-neoadjuvant setting with current standards of care, some patients still experience tumour progression to metastatic disease, where the five-year survival rate drops from nearly 90% to approximately 30%.10,11

Susan Galbraith, Executive Vice President, Oncology Haematology R&D, AstraZeneca, said: "While there has been significant progress in treating HER2-positive early breast cancer, managing patients at a higher risk of recurrence remains challenging. With this Priority Review, we move closer to bringing Enhertu to the post-neoadjuvant setting, offering more patients the opportunity for sustained long-term outcomes and a potential path to cure."

Ken Takeshita, Global Head, R&D, Daiichi Sankyo, said: "For patients with residual invasive disease after neoadjuvant therapy, identifying additional treatments following surgery is critical to help further reduce the risk of recurrence and help prevent progression to metastatic disease. This Priority Review reinforces the potential of Enhertu to become a new standard of care for HER2-positive early breast cancer based on the results of DESTINY-Breast05."

The sBLA is based on data from the DESTINY-Breast05 Phase III trial presented at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) 2025 Congress and subsequently published in The New England Journal of Medicine.1

In the trial, Enhertu significantly reduced the risk of invasive disease recurrence or death (invasive disease-free survival [IDFS]) by 53% compared with trastuzumab emtansine (T-DM1; based on a hazard ratio [HR] of 0.47; 95% confidence interval [CI] 0.34-0.66; p<0.0001) as a post-neoadjuvant treatment for patients with HER2-positive breast cancer. Enhertu demonstrated a three-year IDFS rate of 92.4% compared with 83.7% with T-DM1. IDFS findings were consistent across all prespecified subgroups.

Enhertu also significantly reduced the risk of disease recurrence or death (disease-free survival [DFS]), a key secondary endpoint, by 53% versus T-DM1 (HR 0.47; 95% CI 0.34-0.66; p<0.0001). Further, Enhertu lowered the risk of distant disease recurrence (distant recurrence-free interval) by 51% and the risk of brain metastases (brain metastasis-free interval) by 36% compared with T-DM1 (HR 0.64; 95% CI 0.35-1.17).

The safety profile of Enhertu observed in DESTINY-Breast05 was consistent with its known profile with no new safety concerns identified.

Regulatory submissions for Enhertu based upon DESTINY-Breast05 are also under review in the EU and Japan. In addition, an sBLA for Enhertu followed by paclitaxel, trastuzumab and pertuzumab (THP) currently is under review in the US for the neoadjuvant treatment of patients with HER2-positive early breast cancer based on results from the DESTINY-Breast11 trial.

Enhertu is already approved in more than 90 countries as a treatment for patients with HER2-positive metastatic breast cancer.

Enhertu is a specifically engineered HER2-directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo and being jointly developed and commercialised by AstraZeneca and Daiichi Sankyo.

Notes

Post-neoadjuvant treatment for HER2-positive early breast cancer
Breast cancer is the second most common cancer and one of the leading causes of cancer-related deaths worldwide.12 More than two million breast cancer cases were diagnosed in 2022, with more than 665,000 deaths globally.12 In the US, more than 320,000 cases of breast cancer are diagnosed annually with more than 42,000 deaths.13

HER2 is a tyrosine kinase receptor growth-promoting protein expressed on the surface of many types of tumours including breast cancer.14 HER2 protein overexpression may occur as a result of HER2 gene amplification and is often associated with aggressive disease and poor prognosis in breast cancer.14 Approximately one in five cases of breast cancer are considered HER2-positive.2-3

For patients with HER2-positive early breast cancer, achieving pCR with neoadjuvant treatment is the earliest indicator of improved long-term survival.9 However, approximately half of patients who receive neoadjuvant treatment do not experience pCR, putting them at increased risk of disease recurrence.4-9

Despite receiving additional treatment for residual disease in the post-neoadjuvant setting, some patients still experience invasive disease or death, and current treatment options have shown limited impact on central nervous system recurrence.11 In the US, around 16,000 patients with HER2-positive early breast cancer receive treatment in the post-neoadjuvant setting (after surgery) each year.15

DESTINY-Breast05
DESTINY-Breast05 is a global, multicentre, randomised, open-label, Phase III trial evaluating the efficacy and safety of Enhertu (5.4mg/kg) versus T-DM1 in patients with HER2-positive early breast cancer with residual invasive disease in breast or axillary lymph nodes following neoadjuvant therapy and a high risk of recurrence. High risk of recurrence was defined as presentation with inoperable cancer (prior to neoadjuvant therapy) or pathologically positive axillary lymph nodes following neoadjuvant therapy.

The primary endpoint of DESTINY-Breast05 is investigator-assessed IDFS. IDFS is defined as the time from randomisation until first invasive local, axillary or distant recurrence or death from any cause. The key secondary endpoint is investigator-assessed disease-free survival. Other secondary endpoints include overall survival, distant recurrence-free interval, brain metastases-free interval and safety.

DESTINY-Breast05 enrolled 1,635 patients in Asia, Europe, North America, Oceania and South America. For more information about the trial, visit ClinicalTrials.gov.

Enhertu
Enhertu is a HER2-directed ADC. Designed using Daiichi Sankyo’s proprietary DXd ADC Technology, Enhertu is the lead ADC in the oncology portfolio of Daiichi Sankyo and the most advanced programme in AstraZeneca’s ADC scientific platform. Enhertu consists of a HER2 monoclonal antibody attached to a number of topoisomerase I inhibitor payloads (an exatecan derivative, DXd) via tetrapeptide-based cleavable linkers.

Enhertu (5.4mg/kg) in combination with pertuzumab is approved in the US as a 1st-line treatment for adult patients with unresectable or metastatic HER2-positive (IHC 3+ or ISH+) breast cancer, as determined by an FDA-approved test based on the results from the DESTINY-Breast09 trial.

Enhertu (5.4mg/kg) is approved in more than 90 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2-positive (IHC 3+ or ISH+) breast cancer who have received a prior anti-HER2-based regimen, either in the metastatic setting or in the neoadjuvant or adjuvant setting, and have developed disease recurrence during or within six months of completing therapy based on the results from the DESTINY-Breast03 trial.

Enhertu (5.4mg/kg) is approved in more than 90 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2-low (IHC 1+ or IHC 2+/ISH-) breast cancer who have received a prior systemic therapy in the metastatic setting or developed disease recurrence during or within six months of completing adjuvant chemotherapy based on the results from the DESTINY-Breast04 trial.

Enhertu (5.4mg/kg) is approved in more than 60 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic hormone receptor (HR)-positive, HER2-low (IHC 1+ or IHC 2+/ ISH-) or HER2-ultralow (IHC 0 with membrane staining) breast cancer, as determined by a locally or regionally approved test, that have progressed on one or more endocrine therapies in the metastatic setting based on the results from the DESTINY-Breast06 trial.

Enhertu (5.4mg/kg) is approved in more than 70 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic non-small cell lung cancer (NSCLC) whose tumours have activating HER2 (ERBB2) mutations, as detected by a locally or regionally approved test, and who have received a prior systemic therapy based on the results from the DESTINY-Lung02 and/or DESTINY-Lung05 trials. Continued approval in China and the US for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.

Enhertu (6.4mg/kg) is approved in more than 80 countries/regions worldwide for the treatment of adult patients with locally advanced or metastatic HER2-positive (IHC 3+ or IHC 2+/ISH+) gastric or gastroesophageal junction (GEJ) adenocarcinoma who have received a prior trastuzumab-based regimen based on the results from the DESTINY-Gastric01, DESTINY-Gastric02 and/or DESTINY-Gastric06 trials. Continued approval in China for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.

Enhertu (5.4mg/kg) is approved in more than 10 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2-positive (IHC 3+) solid tumours who have received prior systemic treatment and have no satisfactory alternative treatment options based on efficacy results from the DESTINY-PanTumor02, DESTINY-Lung01 and DESTINY-CRC02 trials. Continued approval for this indication in the US may be contingent upon verification and description of clinical benefit in a confirmatory trial.

Enhertu clinical development programme
A comprehensive global clinical development programme is underway evaluating the efficacy and safety of Enhertu as a monotherapy, in combination or sequentially with other cancer medicines across multiple HER2-targetable cancers.

(Press release, AstraZeneca, MAR 9, 2026, View Source [SID1234663345])

On March 6, 2026 Lisata Therapeutics, Inc. (Nasdaq: LSTA) ("Lisata" or the "Company"), a clinical-stage pharmaceutical company developing innovative therapies for the treatment of advanced solid tumors and other serious diseases, reported that it has entered into a definitive agreement to be acquired by Kuva Labs Inc. ("Kuva"), a privately-held company.

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Details of the Transaction

Under the terms of the merger agreement, Kuva will commence a tender offer to acquire all the issued and outstanding shares of common stock of the Company for $5.00 per share in cash payable at closing plus one contingent value right ("CVR") per share (the "Transaction"). The CVR entitles the holders of record to receive an additional cash payment of $1.00 per share if a New Drug Application or similar registration is filed or formally accepted for review by the FDA or any governmental authority in any jurisdiction with respect to any pharmaceutical product that contains or incorporates the product candidate referred to as of the date of the merger agreement as certepetide for any indication or patient population prior to the earlier of (a) 11:59 p.m. New York City Time on the seventh (7th) anniversary of the closing date, and (b) termination of the CVR agreement. Should the relevant milestone not be met, then no additional consideration will be payable to the holders of the CVRs in relation to such milestone.

The Transaction is subject to customary offer conditions contained in the merger agreement that will be filed with the SEC, including the tender of a majority of the outstanding shares of the Company’s capital stock. The merger agreement does not include a financing condition. The Transaction is expected to close in the second quarter of 2026, subject to satisfaction of the offer conditions. If the tender offer closes, then Kuva would acquire the untendered shares and convertible securities of the Company through a second-step merger for the same consideration.

Following completion of the Transaction, Lisata will become part of Kuva, a privately-held company, and its common stock will be delisted from the Nasdaq Capital Market. Lisata will also apply to deregister its common stock and cease to be a reporting company under the United States Securities Exchange Act of 1934, as amended.

Board of Directors Recommendation

Following a comprehensive strategic review and thorough evaluation conducted with the assistance of its independent legal and financial advisors, the Lisata board of directors has unanimously determined that the definitive agreement and the transactions contemplated thereby are advisable, fair to, and in the best interests of Lisata and its stockholders. The board of directors has duly authorized and approved the execution and delivery of the merger agreement and unanimously recommends that all stockholders accept the offer and tender their shares.

Advisors

Mintz, Levin, Cohn, Ferris, Glovsky & Popeo, P.C. is serving as legal counsel to Lisata and H.C. Wainwright & Co. acted as financial advisor to Lisata. Goodwin Procter LLP is acting as legal counsel to Kuva.

(Press release, Lisata Therapeutics, MAR 6, 2026, View Source [SID1234664401])

On March 6, 2026 BridgeBio Oncology Therapeutics, Inc. ("BBOT") (Nasdaq: BBOT), a clinical-stage biopharmaceutical company focused on RAS-pathway malignancies, reported the publication of preclinical data describing the discovery and characterization of BBO-11818, a panKRAS inhibitor targeting KRAS in both the ON and OFF states, with significant therapeutic potential for patients with KRAS mutant cancers. The publication, titled "Discovery of BBO-11818, a Potent and Selective Non-covalent Inhibitor of (ON) and (OFF) KRAS with Activity Against Multiple Oncogenic Mutants" was published in the peer-reviewed journal Cancer Discovery, a journal of the American Association for Cancer Research (AACR) (Free AACR Whitepaper)’s (AACR) (Free AACR Whitepaper).

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"While advances with current KRASG12C inhibitors have shown promising clinical efficacy, there are currently no approved targeted therapies for most clinically significant KRAS mutants, including KRASG12D and KRASG12V," said Pedro J. Beltran, PhD, Chief Scientific Officer of BBOT. "To address this significant unmet need, we developed BBO-11818 as a potent panKRAS inhibitor with strong binding affinity for KRAS and broad selectivity over HRAS and NRAS, designed to achieve high levels of KRAS inhibition in both the ON and OFF states. BBO-11818 has the potential to be used as a monotherapy treatment, or in combination with standard-of-care therapies, as well as with our RAS:PI3Kα breaker, BBO-10203. These preclinical data underscore the strength of our platform and highlight the promise of BBO-11818 as a foundational therapy that could meaningfully reshape the treatment landscape for KRAS driven tumors."

The preclinical findings in this publication highlight the key properties BBO-11818 and its potential to address critical limitations associated with other compounds targeting mutant KRAS. Unlike several existing inhibitors that primarily target the inactive GDP-bound state, BBO-11818 potently binds and inhibits KRAS in both its ON and OFF states, as demonstrated through structural analysis, surface plasmon resonance, and functional assays. By targeting the active state of KRAS, BBO-11818 may overcome a critical resistance mechanism observed with current KRAS inhibitors, in which tumors upregulate KRAS expression or activate upstream signaling to sustain pathway activation.

Data demonstrate potent activity against multiple clinically relevant KRAS mutants, including KRASG12D, KRASG12V, and KRASG12C, with high selectivity for KRAS, exhibiting >500-fold selectivity over other RAS isoforms. BBO-11818’s activity across a broad range of KRAS mutants is designed to help prevent the emergence of resistance driven by secondary activating KRAS mutations that can limit the efficacy of allele-specific inhibitors. In addition, its high specificity for KRAS may support improved tolerability and greater potential for combination with other therapeutic agents. Monotherapy studies show robust anti-tumor activity across multiple in vitro and in vivo models of KRAS mutant solid tumors, including colorectal, pancreatic, and lung cancers. BBO-11818 also demonstrated strong combination potential with immune checkpoint inhibitors, anti-EGFR antibodies, and BBO-10203, the company’s RAS:PI3Kα breaker compound.

"The discovery and development of BBO-11818 reflect the exceptional collaboration between the BBOT team and our colleagues at Frederick National Lab," said Frank McCormick, PhD, FRS, BBOT Board Director, Advisor to the National Cancer Institute’s RAS Initiative at Frederick National Laboratory for Cancer Research, and Professor of Tumor Biology and Cancer Research at UCSF. "We are incredibly proud of what we’ve accomplished together and are hopeful that our collective efforts will ultimately lead to meaningful improvements in patient outcomes."

BBO-11818 is currently being evaluated in the Phase 1 KONQUER-101 trial (NCT06917079) in subjects with locally advanced unresectable or metastatic KRAS mutant solid tumors. Initial Phase 1 monotherapy data were announced in January 2026, demonstrating encouraging early anti-tumor activity across dose levels and tumor types, including a confirmed partial response in a patient with pancreatic ductal adenocarcinoma (PDAC) with a 56% tumor reduction. The company plans to provide additional data updates in the second half of 2026 and to study the combination of BBO-11818 with BBO-10203 later in 2026.

The discovery and preclinical characterization of BBO-11818 is the result of a collaborative effort between BBOT, the RAS Initiative at Frederick National Laboratory, and Lawrence Livermore National Laboratory.

About BBO-11818
BBO-11818 is a selective, orally bioavailable non-covalent inhibitor that targets KRAS in both the ON and OFF states, has high selectivity over HRAS and NRAS, and displays strong activity in KRAS mutant preclinical models, including KRASG12D and KRASG12V. In addition, it potently suppresses MAPK signaling and inhibiting cell proliferation in KRAS mutant cell lines. BBO-11818 is currently being evaluated in the Phase 1 KONQUER-101 trial in subjects with locally advanced unresectable or metastatic KRAS mutant solid tumors.

(Press release, BridgeBio Oncology Therapeutics, MAR 6, 2026, View Source [SID1234663342])