On May 31, 2026 Pfizer Inc. (NYSE: PFE) reported detailed progression-free and overall survival results from Cohort 3, a randomized cohort of the Phase 3 BREAKWATER trial, evaluating BRAFTOVI (encorafenib) in combination with cetuximab (marketed as ERBITUX) and FOLFIRI (fluorouracil, leucovorin, and irinotecan) versus FOLFIRI with or without bevacizumab in patients with previously untreated metastatic colorectal cancer (mCRC) with a BRAF V600E mutation. These results will be presented today in a late-breaking oral presentation (Abstract LBA3503) at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting and simultaneously published in the Annals of Oncology.

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As previously reported, Cohort 3 met its primary endpoint of objective response rate (ORR) by blinded independent central review (BICR). Results for the key secondary endpoint of progression-free survival (PFS) by BICR, being presented at ASCO (Free ASCO Whitepaper), show median PFS was nearly doubled with the BRAFTOVI combination regimen (15.2 months) versus the comparator (8.3 months). A clinically meaningful and statistically significant 56% reduction in the risk of disease progression or death was observed for patients treated with the BRAFTOVI combination regimen versus the comparator (Hazard Ratio [HR] of 0.44; 95% Confidence Interval [CI], 0.27–0.70; p=0.0002).

Updated overall survival (OS), a descriptive secondary endpoint, showed a 44% reduction in the risk of death for patients treated with the BRAFTOVI combination regimen versus the comparator (HR of 0.56; 95% CI, 0.34–0.94) with a median follow-up of approximately 20 months for both arms. At 18 months, 72% of patients receiving the BRAFTOVI combination regimen were expected to be alive compared to 54.5% of patients receiving the comparator. Median OS was not reached for the BRAFTOVI combination regimen versus a median of 20.3 months for the comparator.

"For people with BRAF V600E-mutant metastatic colorectal cancer – a disease that historically has had no targeted treatment options and poor outcomes – these results strengthen confidence in how we can treat this disease," said Scott Kopetz, M.D., Ph.D., FACP, Professor and Deputy Chair of Gastrointestinal Medical Oncology at The University of Texas MD Anderson Cancer Center and co-principal investigator of the BREAKWATER trial. "A nearly 60% reduction in risk of disease progression or death, combined with prolonged overall survival, reinforces the role of encorafenib in combination with cetuximab and FOLFIRI as a standard of care in the first-line setting for this patient population."

"These compelling results add to a robust body of evidence demonstrating the efficacy of the BRAFTOVI combination treatment across two different established chemotherapy regimens in BRAF V600E-mutant metastatic colorectal cancer," said Jeff Legos, Chief Oncology Officer, Pfizer. "These findings reaffirm the established role of the BRAFTOVI combination regimen as a cornerstone of first-line treatment for patients and families facing this challenging diagnosis."

In this Cohort 3 analysis, the safety profile of BRAFTOVI in combination with cetuximab and FOLFIRI continued to be consistent with the known safety profile of each respective agent in the regimen, and no new safety signals were identified. The most common adverse events (AEs) (≥25%) in the BRAFTOVI regimen were nausea, diarrhea, vomiting, anemia, alopecia, fatigue, decreased neutrophil count, constipation, decreased appetite, neutropenia, arthralgia, asthenia, and abdominal pain. Grade ≥3 AEs (all causality) occurred in 70.4% of patients receiving BRAFTOVI in combination with cetuximab and FOLFIRI compared to 80.9% of patients receiving FOLFIRI with or without bevacizumab. Treatment discontinuation occurred in 15.5% of patients receiving the BRAFTOVI combination compared to 10.3% for those receiving FOLFIRI.

Based on the totality of the Phase 3 and Cohort 3 data in the BREAKWATER study, BRAFTOVI in combination with cetuximab and fluorouracil-based chemotherapy received full approval with an expanded indication from the U.S. Food and Drug Administration (FDA) for patients with BRAF V600E-mutant mCRC in February 2026, offering flexibility in chemotherapy regimen used.

Pfizer is continuing its commitment to help non-scientists understand the latest findings with the development of abstract plain language summaries (APLS) for company-sponsored research being presented, which are written in non-technical language. Those interested in learning more can visit www.Pfizer.com/apls to access the summaries.

About BREAKWATER
BREAKWATER is a Phase 3, randomized, active-controlled, open-label, multicenter trial of BRAFTOVI with cetuximab, alone or in combination with chemotherapy (mFOLFOX6 or FOLFIRI) in participants with previously untreated BRAF V600E-mutant mCRC. Patients were randomized to receive BRAFTOVI 300 mg orally once daily in combination with cetuximab (discontinued after randomization of 158 patients), BRAFTOVI 300 mg orally once daily in combination with cetuximab and mFOLFOX6 (n=236) or mFOLFOX6, FOLFOXIRI, or CAPOX, with or without bevacizumab (control arm) (n=243). The dual primary endpoints for these study groups are ORR and PFS as assessed by BICR. OS is a key secondary endpoint. In Cohort 3, patients were randomized to receive BRAFTOVI 300 mg orally once daily in combination with cetuximab and FOLFIRI (n=73) or FOLFIRI, with or without bevacizumab (control-arm) (n=74). The primary endpoint of Cohort 3 is ORR as assessed by BICR. PFS as assessed by BICR is a key secondary endpoint; OS is a secondary endpoint.

About Colorectal Cancer (CRC)
CRC is the third most common type of cancer in the world, with approximately 1.8 million new diagnoses in 2022.1 It is the second leading cause of cancer-related deaths.2 Overall, the lifetime risk of developing CRC is about 1 in 24 for men and 1 in 26 for women.2 In the U.S. alone, an estimated 158,850 people will be diagnosed with cancer of the colon or rectum in 2026, and approximately 55,000 are estimated to die from the disease each year.3 For 20% of those diagnosed with CRC, the disease has metastasized, or spread, making it harder to treat, and up to 50% of patients with localized disease eventually develop metastases.4

BRAF mutations are estimated to occur in 8-12% of people with mCRC and are associated with a poor prognosis for these patients.5 The BRAF V600E mutation is the most common BRAF mutation, and the risk of mortality in CRC patients with the BRAF V600E mutation is more than double that of patients with no known mutation present.5-7 Despite the high unmet need in BRAF V600E-mutant mCRC, prior to the BRAFTOVI accelerated FDA approval in this indication on December 20, 2024, there were no approved biomarker-driven therapies specifically indicated for people with previously untreated BRAF V600E-mutant mCRC.8,9

About BRAFTOVI (encorafenib)
BRAFTOVI is an oral small molecule kinase inhibitor that targets BRAF V600E. Inappropriate activation of proteins in the MAPK signaling pathway (RAS-RAF-MEK-ERK) has been shown to occur in certain cancers, including CRC.

Pfizer has exclusive rights to BRAFTOVI in the U.S., Canada, Latin America, Middle East, and Africa. Ono Pharmaceutical Co., Ltd. has exclusive rights to commercialize the product in Japan and South Korea, Medison has exclusive rights to commercialize the product in Israel, and Pierre Fabre Laboratories has exclusive rights to commercialize the product in all other countries, including Europe and Asia (excluding Japan and South Korea).

INDICATION AND USAGE
BRAFTOVI (encorafenib) is indicated, in combination with cetuximab and fluorouracil-based chemotherapy, for the treatment of adult patients with metastatic colorectal cancer (mCRC) with a BRAF V600E mutation, as detected by an FDA-authorized test.

Limitations of Use: BRAFTOVI is not indicated for treatment of patients with wild-type BRAF CRC.

IMPORTANT SAFETY INFORMATION
Refer to the prescribing information for cetuximab and individual product components of mFOLFOX6 and FOLFIRI for recommended dosing and additional safety information.

WARNINGS AND PRECAUTIONS

New Primary Malignancies: New primary malignancies, cutaneous and noncutaneous, can occur. In the BREAKWATER trial, the following cutaneous malignancies occurred in patients receiving BRAFTOVI in combination with cetuximab and mFOLFOX6: melanocytic nevus in 5.6%, skin papilloma in 3%, basal cell carcinoma in 1.3%, squamous cell carcinoma of skin in 0.9%, keratoacanthoma in 0.4% and malignant melanoma in situ in 0.4%. In patients who received BRAFTOVI in combination with cetuximab and FOLFIRI, skin papilloma occurred in 2.8% and keratoacanthoma in 1.4% of patients. Perform dermatologic evaluations prior to initiating treatment, every 2 months during treatment, and for up to 6 months following discontinuation of treatment. Manage suspicious skin lesions with excision and dermatopathologic evaluation. Dose modification is not recommended for new primary cutaneous malignancies. Based on its mechanism of action, BRAFTOVI may promote malignancies associated with activation of RAS through mutation or other mechanisms. Monitor patients receiving BRAFTOVI for signs and symptoms of noncutaneous malignancies. Discontinue BRAFTOVI for RAS mutation-positive noncutaneous malignancies. Monitor patients for new malignancies prior to initiation of treatment, while on treatment, and after discontinuation of treatment.

Tumor Promotion in BRAF Wild-Type Tumors: In vitro experiments have demonstrated paradoxical activation of MAP-kinase signaling and increased cell proliferation in BRAF wild-type cells exposed to BRAF inhibitors. Confirm evidence of BRAF V600E or V600K mutation using an FDA-authorized test prior to initiating BRAFTOVI.

Cardiomyopathy: Cardiomyopathy manifesting as left ventricular dysfunction associated with symptomatic or asymptomatic decreases in ejection fraction, has been reported in patients. Assess left ventricular ejection fraction (LVEF) by echocardiogram or multigated acquisition (MUGA) scan prior to initiating treatment, 1 month after initiating treatment, and then every 2 to 3 months during treatment. The safety has not been established in patients with a baseline ejection fraction that is either below 50% or below the institutional lower limit of normal (LLN). Patients with cardiovascular risk factors should be monitored closely. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction.

Hepatotoxicity: Hepatotoxicity can occur. In the BREAKWATER trial, the incidence of Grade 3 or 4 increases in liver function laboratory tests in patients receiving BRAFTOVI in combination with cetuximab and mFOLFOX6 was 2.6% for alkaline phosphatase, 1.3% each for ALT and AST. In patients receiving BRAFTOVI in combination with cetuximab and FOLFIRI, the incidence of Grade 3 or 4 increases in liver function laboratory tests was 1.5% each for ALT and AST. Monitor liver laboratory tests before initiation of BRAFTOVI, monthly during treatment, and as clinically indicated. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction.

Hemorrhage: Hemorrhage can occur. In the BREAKWATER trial, hemorrhage occurred in 34% of patients receiving BRAFTOVI in combination with cetuximab and mFOLFOX6; Grade 3 or 4 hemorrhage occurred in 3% of patients. In patients receiving BRAFTOVI in combination with cetuximab and FOLFIRI, hemorrhage occurred in 21% of patients. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction.

Uveitis: Uveitis, including iritis and iridocyclitis, has been reported in patients treated with BRAFTOVI. In BREAKWATER, the incidence of uveitis among patients who received BRAFTOVI in combination with cetuximab and mFOLFOX6 was 0.4%. Assess for visual symptoms at each visit. Perform an ophthalmological evaluation at regular intervals and for new or worsening visual disturbances, and to follow new or persistent ophthalmologic findings. Withhold, reduce dose, or permanently discontinue based on severity of adverse reaction.

QT Prolongation: BRAFTOVI is associated with dose-dependent QTc interval prolongation in some patients. In the BREAKWATER trial, an increase of QTcF >500 ms was measured in 4% (9/226) of patients receiving BRAFTOVI in combination with cetuximab and mFOLFOX6. In patients receiving BRAFTOVI in combination with cetuximab and FOLFIRI, an increase of QTcF >500 ms was measured in 1.5% (1/65) of patients. Monitor patients who already have or who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, severe or uncontrolled heart failure and those taking other medicinal products associated with QT prolongation. Correct hypokalemia and hypomagnesemia prior to and during BRAFTOVI administration. Withhold, reduce dose, or permanently discontinue for QTc >500 ms.

Embryo-Fetal Toxicity: BRAFTOVI can cause fetal harm when administered to pregnant women. BRAFTOVI can render hormonal contraceptives ineffective. Advise females of reproductive potential to use effective nonhormonal contraception during treatment with BRAFTOVI and for 2 weeks after the final dose.

Risks Associated with Combination Treatment: BRAFTOVI is indicated for use as part of a regimen in combination with cetuximab and mFOLFOX6 or FOLFIRI. Refer to the prescribing information for cetuximab and individual product components of mFOLFOX6 and FOLFIRI for additional risk information.

Lactation: Advise women not to breastfeed during treatment with BRAFTOVI and for 2 weeks after the final dose.

Infertility: Advise males of reproductive potential that BRAFTOVI may impair fertility.

ADVERSE REACTIONS

BRAF V600E mutation-positive mCRC, in combination with cetuximab and mFOLFOX6

Serious adverse reactions occurred in 46% of patients who received BRAFTOVI in combination with cetuximab and mFOLFOX6. Serious adverse reactions in >3% of patients included intestinal obstruction (4.7%), pyrexia (3.9%), sepsis (3.4%), and abdominal pain (3.4%)
Fatal intestinal obstruction occurred in 0.9%, and fatal large intestinal perforation and gastrointestinal perforation occurred in 0.4% (each) in patients who received BRAFTOVI in combination with cetuximab and mFOLFOX6
Most common adverse reactions (≥25%, all grades) in the BRAFTOVI with cetuximab and mFOLFOX6 arm compared to the control arm (mFOLFOX6 ± bevacizumab or FOLFOXIRI ± bevacizumab or CAPOX ± bevacizumab), and a subset of the control arm (mFOLFOX6 ± bevacizumab), respectively were: peripheral neuropathy (64% vs 53% and 57%), nausea (54% vs 50% and 44%), fatigue (53% vs 41% and 45%), diarrhea (42% vs 50% and 44%), decreased appetite (38% vs 27% and 30%), rash (36% vs 6% and 5%), vomiting (36% vs 22% and 17%), hemorrhage (34% vs 21% and 15%), abdominal pain (32% vs 31% and 30%), arthralgia (32% vs 6% and 7%), pyrexia (29% vs 16% and 17%), and constipation (27% vs 23% and 25%)
Most common laboratory abnormalities(≥10%, grade 3 or 4) in the BRAFTOVI with cetuximab and mFOLFOX6 arm compared to the control arm (mFOLFOX6 ± bevacizumab or FOLFOXIRI ± bevacizumab or CAPOX ± bevacizumab), and a subset of the control arm (mFOLFOX6 ± bevacizumab), respectively were: increased lipase (53% vs 28% and 23%), decreased neutrophil count (37% vs 35% and 33%), decreased hemoglobin (19% vs 6% and 7%), decreased white blood cell count (12% vs 8% and 6%), and increased glucose (11% vs 2% and 1%)
BRAF V600E mutation-positive mCRC, in combination with cetuximab and FOLFIRI

Serious adverse reactions occurred in 39% of patients who received BRAFTOVI in combination with cetuximab and FOLFIRI. Serious adverse reactions in >3% of patients included febrile neutropenia (5.6%) and infusion related reaction (4.2%)
Fatal gastrointestinal perforation occurred in 1.4% of patients who received BRAFTOVI in combination with cetuximab and FOLFIRI
Most common adverse reactions (>25%, all grades) in the BRAFTOVI with cetuximab and FOLFIRI arm compared to the control arm (FOLFIRI ± bevacizumab) were nausea (61% vs 57%), diarrhea (55% vs 49%), fatigue (47% vs 50%), vomiting (47% vs 31%), alopecia (35% vs 22%), constipation (31% vs 29%), abdominal pain (30% vs 22%), decreased appetite (30% vs 32%), and rash (27% vs 1.5%)
Most common laboratory abnormalities (≥10%, grade 3 or 4) in the BRAFTOVI with cetuximab and FOLFIRI arm compared to the control arm (FOLFIRI ± bevacizumab) were: decreased neutrophil count (30% vs 32%), increased lipase (22% vs 12%), decreased white blood cell count (20% vs 6%), and decreased hemoglobin (10% vs 3%)
DRUG INTERACTIONS
Strong or moderate CYP3A4 inhibitors: Avoid coadministration of BRAFTOVI with strong or moderate CYP3A4 inhibitors, including grapefruit juice. If coadministration is unavoidable, reduce the BRAFTOVI dose.

Strong CYP3A4 inducers: Avoid coadministration of BRAFTOVI with strong CYP3A4 inducers.

Sensitive CYP3A4 substrates: Avoid the coadministration of BRAFTOVI with CYP3A4 substrates (including hormonal contraceptives) for which a decrease in plasma concentration may lead to reduced efficacy of the substrate. If the coadministration cannot be avoided, see the CYP3A4 substrate product labeling for recommendations.

Dose reductions of drugs that are substrates of OATP1B1, OATP1B3, or BCRP may be required when used concomitantly with BRAFTOVI.

Avoid coadministration of BRAFTOVI with drugs known to prolong QT/QTc interval.

(Press release, Pfizer, MAY 31, 2026, View Source [SID1234666276])

On May 31, 2026 Hanmi Pharm. Co., Ltd. ("Hanmi") reported that they have entered into a license agreement for the development, manufacturing and commercialization of Hanmi’s biologic drug candidate sonefpeglutide (LAPSGLP-2 analog) with Eli Lilly and Company ("Lilly").

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Sonefpeglutide is a novel drug candidate incorporating Hanmi’s proprietary long-acting platform technology, LAPSCOVERY. Hanmi has previously received FDA marketing approval for a biologic incorporating its LAPSCOVERY platform and is currently conducting additional global clinical trials for five other programs utilizing the same platform.

Hanmi has focused on the biological functions of glucagon-like peptide 2 (GLP-2) – including the promotion of intestinal growth, reduction of inflammation, and protection and regeneration of the intestinal mucosa – and has demonstrated these effects through a range of non-clinical studies. The company has also presented the therapeutic potential of LAPSGLP-2 across multiple indications at major scientific conferences. Hanmi is currently conducting a global Phase 2 clinical trial in short bowel syndrome (SBS).

Hanmi will continue to conduct the ongoing global Phase 2 trial in SBS through completion while Lilly will explore additional clinical trials for sonefpeglutide based on its nonclinical and clinical data.

Through this agreement, Lilly will obtain exclusive rights to develop, manufacture and commercialize sonefpeglutide worldwide, excluding Korea.

Juhyun Lim, Vice Chairman of Hanmi, stated, "It is highly meaningful that Lilly—one of the most closely watched innovators globally—has highly recognized the development potential for sonefpeglutide." She added, "Hanmi will continue to advance innovative drug development, guided by our mission of ‘Respect for People and Value Creation.’"

Under the agreement, Hanmi will receive an upfront payment of USD 75 million and may receive up to an additional USD 1.185 billion in clinical development, regulatory approval and commercialization milestone payments. In addition, Hanmi will be eligible to receive royalties following product launch.

(Press release, Hanmi, MAY 31, 2026, View Source [SID1234666261])

On May 31, 2026 Kelonia Therapeutics, Inc., a clinical-stage biotechnology company pioneering in vivo gene delivery, reported positive updated results from inMMyCAR, the ongoing first-in-human Phase 1 study of KLN-1010 in patients with relapsed and refractory multiple myeloma (RRMM), at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting in Chicago, Illinois.

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Fourteen additional patients have been dosed since first clinical data were reported at the American Society of Hematology (ASH) (Free ASH Whitepaper) 2025 Annual Meeting, bringing the total number of patients dosed to 18. The interim data presented at ASCO (Free ASCO Whitepaper) demonstrate a 100% overall response rate (ORR) and minimal residual disease (MRD)-negative bone marrow at one month post treatment in all evaluable patients.

Additional highlights of the updated data presented today:

First patient treated remains in deep, ongoing MRD-negative response beyond 10 months
Six patients with ≥ 4 months of follow up include 4 stringent complete response (sCR) and 2 very good partial response (VGPR), all with ongoing MRD-negative bone marrows
Robust generation and sustained persistence of CAR-T cells in the peripheral blood and bone marrow exceeding what is typically seen with ex vivo CAR-T therapies
Continued favorable safety and tolerability profiles; safety review committee has approved outpatient infusion
16 of 18 patients experienced cytokine release syndrome (CRS); all were Grade 1-2
One Grade 1 and one Grade 3 immune effector-cell associated neurotoxicity syndrome (ICANS) event; Grade 3 event was limited to 3 days
No delayed neurotoxicity observed
Cytopenias and Grade 3-4 infections were notably limited
No infusion-related reactions (IRRs) following dexamethasone premedication implementation
"The clinical data presented today at ASCO (Free ASCO Whitepaper) strengthens our conviction that the iGPS platform has the potential to transform the treatment experience and outcomes for patients with serious hematologic malignancies," said Kevin Friedman, Ph.D., Chief Executive Officer and Founder of Kelonia. "This expanded patient cohort continues to provide clear clinical validation of KLN-1010 and our platform. Durable and deep responses were achieved without the need for preparative chemotherapy or complex CAR-T cell manufacturing that impact patient access and treatment timelines. Combined with a safety profile consistent with traditional CAR-T therapies in multiple myeloma, we are seeing growing evidence for the potential of KLN-1010 to democratize CAR-T treatment of multiple myeloma."

"Early data from Kelonia’s lead in vivo CAR-T program continues to demonstrate highly encouraging responses in additional patients, with the benefit of extended follow-up revealing a consistent pattern of strong clinical responses over time, and a continued favorable safety profile," said ASCO (Free ASCO Whitepaper) Presenter and inMMyCAR investigator, Professor Joy Ho, MBBS, D.Phil, Royal Prince Alfred Hospital, Sydney, Australia. "The persistent generation of CAR-T cells observed across the expanded cohort reinforces the potential of KLN-1010 to make a meaningful difference for multiple myeloma patients."

Eli Lilly and Company’s proposed acquisition of Kelonia Therapeutics announced in April 2026 is pending transaction close.

About KLN-1010

KLN-1010, which has received Fast Track designation from the U.S. Food and Drug Administration (FDA), is an investigational in vivo gene therapy that generates anti-BCMA CAR-T cells, targeting the BCMA protein expressed on the surface of multiple myeloma cells. Unlike traditional CAR-T treatments, KLN-1010 is administered to patients via direct infusion and is designed to generate durable CAR-T cells inside the body after a single dose, potentially eliminating the need for long wait times to receive treatment. This may overcome several limitations faced by current CAR-T approaches, including limited access to treatment and the requirement of preconditioning chemotherapy.

About inMMyCAR

inMMyCAR is a Phase 1, open-label, dose-escalation clinical trial designed to assess the safety, tolerability, pharmacology and preliminary efficacy of a single dose of KLN-1010 in up to 40 patients. The primary endpoints are incidence and severity of treatment-emergent adverse events (TEAEs), including dose limiting toxicities (DLTs), and to establish the recommended Phase 2 dose of KLN-1010. Additional information and study site information may be found on clinicaltrials.gov (NCT07075185).

About Relapsed and Refractory Multiple Myeloma

Multiple myeloma is a hematologic malignancy characterized by the proliferation of plasma cells in the bone marrow, leading to bone destruction, anemia, renal dysfunction, and immunosuppression. It is driven by complex genetic and epigenetic alterations that promote malignant cell survival and resistance to apoptosis. Relapsed and refractory multiple myeloma is characterized by clonal evolution, drug resistance, and increased disease heterogeneity, heightening the need for accessible, personalized therapeutic strategies.

(Press release, Kelonia Therapeutics, MAY 31, 2026, View Source [SID1234666277])

On May 31, 2026 Eli Lilly and Company (NYSE: LLY) reported results from the Phase 3 LIBRETTO-432 clinical trial of Retevmo (selpercatinib) as adjuvant therapy versus placebo in patients with early-stage (IB-IIIA) rearranged during transfection (RET) fusion-positive non-small cell lung cancer (NSCLC). The study met its primary endpoint, demonstrating a highly statistically significant and clinically meaningful improvement in investigator-assessed event-free survival (EFS) with selpercatinib reducing the risk of disease recurrence or death by 83% versus placebo in the primary analysis population.

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These data will be simultaneously published in the New England Journal of Medicine and presented during the Plenary Session at the 2026 ASCO (Free ASCO Whitepaper) Annual Meeting taking place in Chicago, Illinois, as well as featured in the meeting’s press program.

"Patients with early-stage RET fusion-positive lung cancer face high recurrence risk, yet unlike those with EGFR or ALK alterations, have lacked a proven targeted treatment option," said Jonathan Goldman, M.D., Professor of Medicine and Director of Clinical Trials at University of California, Los Angeles. "These LIBRETTO-432 results provide strong evidence that treating with selpercatinib after surgery or radiation can significantly lower that risk. The magnitude of benefit seen from adjuvant treatment with selpercatinib reinforces that comprehensive genomic testing at diagnosis is essential for all people with lung cancer and could lead to changes in clinical practice for treating early-stage RET-positive disease."

LIBRETTO-432 is the first and only randomized Phase 3 study to evaluate the safety and efficacy of a selective RET kinase inhibitor as adjuvant therapy in this population. The trial enrolled 151 patients who were randomized 1:1 to receive selpercatinib 160mg twice daily or placebo for up to three years following completion of definitive radiotherapy or surgery with curative intent with or without adjuvant chemotherapy.

At a median follow-up of 24 months, investigator-assessed EFS in the primary analysis population (patients with stage II-IIIA disease, n=109) was significantly improved with selpercatinib compared to placebo (HR: 0.17 [95% CI, 0.06 to 0.51]; p<0.001). The EFS rate at 24 months was 92% [95% CI, 75.4 to 97.2] for selpercatinib compared to 61% [95% CI, 44.2 to 74.3] for placebo. The median EFS was not reached for selpercatinib versus 31.8 months for placebo. In the overall study population (patients with stage IB-IIIA disease, n=151), EFS was consistent, also favoring selpercatinib (HR: 0.17 [95% CI, 0.06 to 0.49]; p<0.001). The EFS rate at 24 months was 94% [95% CI, 81.5 to 98.0] in the selpercatinib group and 70% [95% CI, 55.5 to 80.1] in the placebo group. Results were consistent across blinded independent central review and key subgroups in both the primary analysis set and in the overall study population. Overall survival results trended in favor of selpercatinib, but were immature at the time of this analysis with few events observed.

The overall safety profile of selpercatinib in LIBRETTO-432 was generally consistent with previously reported trials in the selpercatinib development program. The most common Grade 3 or higher adverse events (AEs) were increased alanine aminotransferase (ALT) (17% in the selpercatinib group versus 1% in the placebo group) and increased aspartate aminotransferase (AST) (19% in the selpercatinib group versus 3% in the placebo group), but were manageable with dose-modification.

"Selpercatinib has changed the treatment paradigm for patients with advanced RET-positive lung cancer, and now the substantial reduction in the risk of recurrence or death seen in LIBRETTO-432 highlights the potential for it to also become a new standard of care in the adjuvant setting for patients with early-stage RET-positive NSCLC," said Jacob Van Naarden, executive vice president and president of Lilly Oncology. "These compelling results highlight the importance of bringing our effective medicines to patients early in their disease course when their impact can be greatest, and bring further urgency to the need for comprehensive biomarker testing for all lung cancers at diagnosis to enable effective therapy against EGFR, ALK and RET and for the development of medicines targeting emerging new biomarkers."

Lilly plans to submit results from LIBRETTO-432 to global health authorities. For more information on the LIBRETTO Phase 3 clinical trial program, please visit clinicaltrials.gov.

About LIBRETTO-432
LIBRETTO-432 is a Phase 3, global, multicenter, randomized, double-blind, controlled clinical trial of selpercatinib versus placebo in patients with RET fusion-positive NSCLC following completion of definitive radiotherapy or surgery with curative intent, and other adjuvant therapy, if indicated. The trial enrolled 151 patients who were randomized 1:1 to receive either selpercatinib or placebo as adjuvant therapy for RET fusion-positive NSCLC. The primary endpoint is EFS as assessed by investigator in the primary analysis population, which was comprised of patients with stage II-IIIA RET fusion-positive NSCLC. Secondary endpoints include EFS as assessed by investigator in the overall population, overall survival (OS), EFS as assessed by blinded independent central review (BICR), time to distant disease recurrence in the central nervous system (CNS) as assessed by investigator and BICR, progression-free survival on the next line of treatment (PFS2), positive predictive value (PPV) of RET tests from investigator-identified laboratories with respect to the Lilly-designated RET test, safety and tolerability.

About Retevmo
Retevmo (selpercatinib, formerly known as LOXO-292) (pronounced reh-TEHV-moh) is a highly selective and potent RET kinase inhibitor with central nervous system (CNS) activity. Retevmo may affect both tumor cells and healthy cells, which can result in side effects. RET-driver alterations are predominantly mutually exclusive from other oncogenic drivers. Retevmo is a U.S. FDA-approved oral prescription medicine, 120 mg or 160 mg dependent on weight (<50 kg or ≥50 kg, respectively), taken twice daily until disease progression or unacceptable toxicity.1

INDICATIONS FOR RETEVMO (selpercatinib)

RETEVMO is a kinase inhibitor indicated for the treatment of:

Adult patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) with a rearranged during transfection (RET) gene fusion, as detected by an FDA-approved test
IMPORTANT SAFETY INFORMATION FOR RETEVMO (selpercatinib)

Hepatotoxicity: Serious hepatic adverse reactions occurred in 3% of patients treated with Retevmo. Increased aspartate aminotransferase (AST) occurred in 59% of patients, including Grade 3 or 4 events in 11% and increased alanine aminotransferase (ALT) occurred in 55% of patients, including Grade 3 or 4 events in 12%. Monitor ALT and AST prior to initiating Retevmo, every 2 weeks during the first 3 months, then monthly thereafter and as clinically indicated. Withhold, reduce dose, or permanently discontinue Retevmo based on severity.

Severe, life-threatening, and fatal interstitial lung disease (ILD)/pneumonitis can occur in patients treated with Retevmo. ILD/pneumonitis occurred in 1.8% of patients who received Retevmo, including 0.3% with Grade 3 or 4 events, and 0.3% with fatal reactions. Monitor for pulmonary symptoms indicative of ILD/pneumonitis. Withhold Retevmo and promptly investigate for ILD in any patient who presents with acute or worsening of respiratory symptoms which may be indicative of ILD (e.g., dyspnea, cough, and fever). Withhold, reduce dose, or permanently discontinue Retevmo based on severity of confirmed ILD.

Hypertension occurred in 41% of patients, including Grade 3 hypertension in 20% and Grade 4 in one (0.1%) patient. Overall, 6.3% had their dose interrupted and 1.3% had their dose reduced for hypertension. Treatment-emergent hypertension was most commonly managed with anti-hypertension medications. Do not initiate Retevmo in patients with uncontrolled hypertension. Optimize blood pressure prior to initiating Retevmo. Monitor blood pressure after 1 week, at least monthly thereafter, and as clinically indicated. Initiate or adjust anti-hypertensive therapy as appropriate. Withhold, reduce dose, or permanently discontinue Retevmo based on severity.

Retevmo can cause concentration-dependent QT interval prolongation. An increase in QTcF interval to >500 ms was measured in 7% of patients and an increase in the QTcF interval of at least 60 ms over baseline was measured in 20% of patients. Retevmo has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. Assess QT interval, electrolytes, and thyroid-stimulating hormone (TSH) at baseline and periodically during treatment, adjusting frequency based upon risk factors including diarrhea. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating Retevmo and during treatment. Monitor the QT interval more frequently when Retevmo is concomitantly administered with strong and moderate CYP3A inhibitors or drugs known to prolong QTc interval. Withhold and dose reduce or permanently discontinue Retevmo based on the severity.

Serious, including fatal, hemorrhagic events can occur with Retevmo. Grade ≥3 hemorrhagic events occurred in 3.1% of patients treated with Retevmo including 4 (0.5%) patients with fatal hemorrhagic events, including cerebral hemorrhage (n=2), tracheostomy site hemorrhage (n=1), and hemoptysis (n=1). Permanently discontinue Retevmo in patients with severe or life-threatening hemorrhage.

Retevmo can cause hypersensitivity, including severe skin reactions such as Stevens-Johnson Syndrome. All grade hypersensitivity occurred in 6% of patients receiving Retevmo, including Grade 3 in 1.9%. The median time to onset was 1.9 weeks (range: 5 days to 2 years). Signs and symptoms of hypersensitivity included fever, rash and arthralgias or myalgias with concurrent decreased platelets or transaminitis. Stevens-Johnson Syndrome has been observed in the post-marketing setting. Discontinue Retevmo in patients with Stevens-Johnson Syndrome. If hypersensitivity occurs, withhold Retevmo and begin corticosteroids at a dose of 1 mg/kg prednisone (or equivalent). Upon resolution of the event, resume Retevmo at a reduced dose and increase the dose of Retevmo by 1 dose level each week as tolerated until reaching the dose taken prior to onset of hypersensitivity. Continue steroids until patient reaches target dose and then taper. Permanently discontinue Retevmo for recurrent hypersensitivity.

Tumor lysis syndrome (TLS) occurred in 0.6% of patients with medullary thyroid carcinoma receiving Retevmo. Patients may be at risk of TLS if they have rapidly growing tumors, a high tumor burden, renal dysfunction, or dehydration. Closely monitor patients at risk, consider appropriate prophylaxis including hydration, and treat as clinically indicated.

Impaired wound healing can occur in patients who receive drugs that inhibit the vascular endothelial growth factor (VEGF) signaling pathway. Therefore, Retevmo has the potential to adversely affect wound healing. Withhold Retevmo for at least 7 days prior to elective surgery. Do not administer for at least 2 weeks following major surgery and until adequate wound healing. The safety of resumption of Retevmo after resolution of wound healing complications has not been established.

Retevmo can cause hypothyroidism. Hypothyroidism occurred in 13% of patients treated with Retevmo; all reactions were Grade 1 or 2. Hypothyroidism occurred in 13% of patients (50/373) with thyroid cancer and 13% of patients (53/423) with other solid tumors including NSCLC. Monitor thyroid function before treatment with Retevmo and periodically during treatment. Treat with thyroid hormone replacement as clinically indicated. Withhold Retevmo until clinically stable or permanently discontinue Retevmo based on severity.

Based on data from animal reproduction studies and its mechanism of action, Retevmo can cause fetal harm when administered to a pregnant woman. Administration of selpercatinib to pregnant rats during organogenesis at maternal exposures that were approximately equal to those observed at the recommended human dose of 160 mg twice daily resulted in embryolethality and malformations. Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential and males with female partners of reproductive potential to use effective contraception during treatment with Retevmo and for 1 week after the last dose. There are no data on the presence of selpercatinib or its metabolites in human milk or on their effects on the breastfed child or on milk production. Because of the potential for serious adverse reactions in breastfed children, advise women not to breastfeed during treatment with Retevmo and for 1 week after the last dose.

Severe adverse reactions (Grade 3-4) occurring in ≥20% of patients who received Retevmo in LIBRETTO-001, were hypertension (20%), diarrhea (5%), prolonged QT interval (4.8%), dyspnea (3.1%), fatigue (3.1%), hemorrhage (2.6%), abdominal pain (2.5%), vomiting (1.8%), headache (1.4%), nausea (1.1%), constipation (0.8%), edema (0.8%), rash (0.6%), and arthralgia (0.3%).

Severe adverse reactions (Grade 3-4) occurring in ≥15% of patients who received Retevmo or chemotherapy with or without pembrolizumab in LIBRETTO-431 were hypertension (20% vs 3.1%), electrocardiogram QT prolonged (9% vs 0%), fatigue (3.2% vs 5%), edema (2.5% vs 0%), rash (1.9% vs 1.0%), diarrhea (1.3% vs 2.0%), abdominal pain (0.6% vs 2.0%), pyrexia (0.6% vs 0%), COVID19 infection (0.6% vs 0%), constipation (0% vs 1.0%), nausea (0% vs 1.0%), vomiting (0% vs 1.0%), and decreased appetite (0% vs 2.0%).

Serious adverse reactions occurred in 44% of patients who received Retevmo in LIBRETTO-001. The most frequently reported serious adverse reactions (in ≥2% of patients) were pneumonia, pleural effusion, abdominal pain, hemorrhage, hypersensitivity, dyspnea, and hyponatremia. Fatal adverse reactions occurred in 3% of patients in LIBRETTO-001; fatal adverse reactions included sepsis (n=6), respiratory failure (n=5), hemorrhage (n=4), pneumonia (n=3), pneumonitis (n=2), cardiac arrest (n=2), sudden death (n=1), and cardiac failure (n=1).

Serious adverse reactions occurred in 35% of patients who received Retevmo in LIBRETTO-431. The most frequently reported serious adverse reactions (≥2% of patients) were pleural effusion and abnormal hepatic function. Fatal adverse reactions occurred in 4.4% of patients who received Retevmo in LIBRETTO-431; fatal adverse reactions included myocardial infarction (n=2), respiratory failure (n=2), cardiac arrest, malnutrition, and sudden death (n=1 each).

Common adverse reactions (all grades) occurring in ≥20% of patients who received Retevmo in LIBRETTO-001, were edema (49%), diarrhea (47%), fatigue (46%), dry mouth (43%), hypertension (41%), abdominal pain (34%), rash (33%), constipation (33%), nausea (31%), headache (28%), cough (24%), vomiting (22%), dyspnea (22%), hemorrhage (22%), arthralgia (21%), and prolonged QT interval (21%).

Common adverse reactions (all grades) occurring in ≥15% of patients who received Retevmo or chemotherapy with or without pembrolizumab in LIBRETTO-431 were hypertension (48% vs 7%), diarrhea (44% vs 24%), edema (41% vs 28%), dry mouth (39% vs 6%), rash (33% vs 30%), fatigue (32% vs 50%), abdominal pain (25% vs 19%), musculoskeletal pain (25% vs 28%), constipation (22% vs 40%), electrocardiogram QT prolonged (20% vs 1.0%), COVID19 infection (19% vs 18%), stomatitis (18% vs 16%), decreased appetite (17% vs 34%), nausea (13% vs 44%), vomiting (13% vs 23%), and pyrexia (13% vs 23%).

Laboratory abnormalities (all grades ≥20%; Grade 3-4) worsening from baseline in patients who received Retevmo in LIBRETTO-001, were increased AST (59%; 11%), decreased calcium (59%; 5.7%), increased ALT (56%; 12%), decreased albumin (56%; 2.3%), increased glucose (53%; 2.8%), decreased lymphocytes (52%; 20%), increased creatinine (47%; 2.4%), decreased sodium (42%; 11%), increased alkaline phosphatase (40%; 3.4%), decreased platelets (37%; 3.2%), increased total cholesterol (35%; 1.7%), increased potassium (34%; 2.7%), decreased glucose (34%; 1.0%), decreased magnesium (33%; 0.6%), increased bilirubin (30%; 2.8%), decreased hemoglobin (28%; 3.5%), and decreased neutrophils (25%; 3.2%).

Laboratory abnormalities (all grades ≥20%; Grade 3-4) worsening from baseline in patients who received Retevmo or chemotherapy with or without pembrolizumab in LIBRETTO-431 were increased ALT (81%; 21% vs 63%; 4.1%), increased AST (77%; 10% vs 46%; 0%), decreased calcium (53%; 1.9% vs 24%; 1.0%), decreased platelets (53%; 3.2% vs 39%; 5%), decreased lymphocytes (53%; 8% vs 64%; 15%), decreased neutrophils (53%; 2.0% vs 58%; 11%), increased bilirubin (52%; 1.3% vs 9%; 0%), increased alkaline phosphatase (35%; 1.3% vs 22%; 0%), decreased sodium (31%; 3.2% vs 41%; 2.1%), decreased albumin (25%; 0% vs 5%; 0%), increased blood creatinine (23%; 0% vs 21%; 0%), decreased hemoglobin (21%; 0% vs 91%; 5%), decreased potassium (17%; 1.3% vs 15%; 1.0%), and decreased magnesium (16%; 0.6% vs 8%; 0%).

Concomitant use of acid-reducing agents decreases selpercatinib plasma concentrations which may reduce Retevmo anti-tumor activity. Avoid concomitant use of proton-pump inhibitors (PPIs), histamine-2 (H2) receptor antagonists, and locally acting antacids with Retevmo. If coadministration cannot be avoided, take Retevmo with food (with a PPI) or modify its administration time (with a H2 receptor antagonist or a locally acting antacid).

Concomitant use of strong and moderate CYP3A inhibitors increases selpercatinib plasma concentrations which may increase the risk of Retevmo adverse reactions including QTc interval prolongation. Avoid concomitant use of strong and moderate CYP3A inhibitors with Retevmo. If concomitant use of a strong or moderate CYP3A inhibitor cannot be avoided, reduce the Retevmo dosage as recommended and monitor the QT interval with ECGs more frequently.

Concomitant use of strong and moderate CYP3A inducers decreases selpercatinib plasma concentrations which may reduce Retevmo anti-tumor activity. Avoid coadministration of Retevmo with strong and moderate CYP3A inducers.

Concomitant use of Retevmo with CYP2C8 and CYP3A substrates increases their plasma concentrations which may increase the risk of adverse reactions related to these substrates. Avoid coadministration of Retevmo with CYP2C8 and CYP3A substrates where minimal concentration changes may lead to increased adverse reactions. If coadministration cannot be avoided, follow recommendations for CYP2C8 and CYP3A substrates provided in their approved product labeling.

Retevmo is a P-glycoprotein (P-gp) and BCRP inhibitor. Concomitant use of Retevmo with P-gp or BCRP substrates increases their plasma concentrations, which may increase the risk of adverse reactions related to these substrates. Avoid coadministration of Retevmo with P-gp or BCRP substrates where minimal concentration changes may lead to increased adverse reactions. If coadministration cannot be avoided, follow recommendations for P-gp and BCRP substrates provided in their approved product labeling.

No dosage modification is recommended for patients with mild to severe renal impairment (estimated Glomerular Filtration Rate [eGFR] ≥15 to 89 mL/min, estimated by Modification of Diet in Renal Disease [MDRD] equation). A recommended dosage has not been established for patients with end-stage renal disease.

Reduce the dose when administering Retevmo to patients with severe hepatic impairment (total bilirubin greater than 3 to 10 times upper limit of normal [ULN] and any AST). No dosage modification is recommended for patients with mild or moderate hepatic impairment. Monitor for Retevmo-related adverse reactions in patients with hepatic impairment.

Retevmo (selpercatinib) is available as 40 mg and 80 mg capsules, and 40 mg, 80 mg, 120 mg, and 160 mg tablets.

(Press release, Eli Lilly, MAY 31, 2026, View Source [SID1234666244])

On May 31, 2026 Oricell Therapeutics, a clinical-stage biotech company pioneering cancer immunotherapy, reported that its lead asset, Ori-C101, a GPC3-targeted CAR-T therapy, achieved a 66.7% objective response rate (ORR) in patients with Late-line refractory hepatocellular carcinoma (HCC). The data, selected for an oral presentation at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting, highlight a potential new benchmark for patients who have exhausted standard therapies.

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Hepatocellular carcinoma (HCC) remains a critical global health challenge, particularly in China, which accounts for more than one-third of the world’s over 800,000 annual deaths from the disease. While frontline treatments have evolved, options for patients failing second-line therapy are scarce, with historical ORRs typically below 13%.

Oricell’s registrational Phase Ib BEACON study challenges this status quo. As of April 3, 2026, among 18 efficacy-evaluable patients with advanced, heavily pretreated HCC:

Overall ORR reached 50%.
At the Recommended Phase 2 Dose (RP2D), ORR surged to 66.7%, with a disease control rate (DCR) nearing 90%.
Durability was profound: One patient achieved a complete response (CR) lasting 24 months.
Safety was manageable: No immune effector cell-associated neurotoxicity syndrome (ICANS) or off-tumor toxicity was observed, with cytokine release syndrome (CRS) contained within controllable grades.
Long-Term Validation: From 2021 ASCO (Free ASCO Whitepaper) Poster to Registrational Data

Notably, as early as 2021, Oricell’s investigator-initiated trial (IIT) data for Ori-C101 were selected for a poster presentation at ASCO (Free ASCO Whitepaper). At that time, a striking response was observed in a late-line HCC patient following a single infusion: the first efficacy assessment showed a partial response (PR), with target lesions shrinking by 96.1% (from 155.45 mm to 6 mm) and alpha-fetoprotein (AFP) levels plummeting by 99.1% (from >80,000 ng/mL to 742 ng/mL). The patient achieved an overall survival (OS) of nearly three years.

The now-unveiled registrational clinical data further validate the clinical value of Ori-C101, reinforcing the consistency and reproducibility of Oricell’s approach from early proof-of-concept to pivotal trials.

Technology Backbone: A "Three-in-One" Engine Addressing Solid Tumor Barriers

Ori-C101’s exceptional performance stems from Oricell’s proprietary technology platforms, systematically addressing major challenges in CAR-T therapy for solid tumors: antigen heterogeneity, immunosuppressive tumor microenvironment (TME), and manufacturing efficiency.

1. OriAb (AI-Powered Antibody Discovery Platform）
The OriAb platform features a massive library comprising up to 10¹¹ fully human scFv and nanobody sequences. Utilizing a live-cell-based high-throughput screening strategy, the platform specifically identifies native conformational antigens, including challenging targets such as GPCRs, thereby avoiding the false-positive risks associated with purified protein-based screening. Furthermore, AI-assisted algorithms have compressed the antibody discovery and screening cycle from a traditional 12 months to just 3 months, significantly enhancing both efficiency and quality. The resulting high-specificity, optimally affine GPC3 antibody sequence equips Ori-C101 with a robust safety profile, effectively minimizing the risk of off-tumor toxicity.

2. OriArmoring (Structure-Enhanced Cell Platform)
The OriArmoring platform incorporates customized "armoring" elements designed to modulate T cell metabolic pathways and signal transduction based on the specific tumor microenvironment (TME). This engineering strategy enriches young, stem-like memory T cell subsets (Tscm), significantly enhancing the in vivo persistence of Ori-C101. By remodeling the local immune microenvironment, the platform effectively reverses immunosuppression, converting "cold tumors" into "hot tumors," thereby promoting the infiltration and activation of effector T cells. This approach overcomes the dual bottlenecks of the immunosuppressive TME and T cell exhaustion in solid tumors, ensuring durable, long-term responses. Additionally, the platform integrates logic-gating strategies—including ‘OR’ gating to prevent antigen escape and ‘AND’ gating to improve targeting precision—which collectively optimize the therapeutic index of the product.

3. OriOnGo: Flexible Manufacturing Platform (Classic / Rapid / In Vivo)
Built on a "Quality by Design" (QbD) philosophy, this platform includes proprietary manufacturing technologies. The rapid manufacturing process reduces ex vivo culture time to just 3 days, significantly improving productivity and lowering cost of goods (COGS). It ensures final product cell viability consistently above 95%, and compresses the vein-to-vein time to within 15 days. Moreover, the platform’s in vivo CAR-T product design and process capabilities open broader future applications for CAR-T therapy. This integrated manufacturing approach enables scalable, cost-effective production while maintaining product quality and patient access.

Executive Outlook

"Securing a third ASCO (Free ASCO Whitepaper) oral presentation validates our integrated platform strategy," said Dr. Helen Yang, Co-Founder and CEO of Oricell. "We are accelerating the pivotal Phase II development to bring this therapy to market. We are also actively seeking global partnerships to expand the reach of our technology and deliver hope to patients worldwide."

(Press release, OriCell Therapeutics, MAY 31, 2026, View Source;oricells-gpc3-car-t-ori-c101-hits-66-7-orr-in-late-line-hcc-signaling-best-in-class-potential-302786638.html [SID1234666262])