On June 2, 2026 Cumberland Pharmaceuticals Inc. (Nasdaq: CPIX), a specialty pharmaceutical company focused on developing new products for rare diseases, and Vanderbilt Health reported data from a Phase 2a clinical trial of ifetroban to prevent metastasis in high-risk solid tumors. The study’s primary safety endpoint was achieved, along with favorable trends in decreased metastasis recurrence and metastasis-free survival. A safe and effective medication that reduces distant metastatic recurrence could transform cancer management and improve the lives of millions of cancer survivors and their families.

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The randomized, double-blind, placebo-controlled Phase 2a trial evaluated the safety of ifetroban, an investigational thromboxane A2 receptor antagonist, in patients with solid tumors at high risk of early metastatic recurrence. Cancer types included breast, lung, pancreatic, soft tissue, bladder, and renal cancers.

The study met its primary endpoint, demonstrating that ifetroban was safe and well-tolerated in this patient population. Rates for adverse events related to treatment were similar between placebo and ifetroban. No serious adverse events (> grade 3) in either group were identified as being related to study treatment. Treatment discontinuation rates were not statistically different between placebo and ifetroban.

Although primarily a safety study and intentionally not powered for efficacy, the study compared the percentage of patients with distant metastatic recurrence 12 months after completion of therapy in both groups (10 placebo-treated and 18 ifetroban-treated participants) as a prespecified secondary endpoint. While 50% of participants experienced distant metastatic recurrence in the placebo arm, only 17% of participants experienced distant metastatic recurrence in the ifetroban arm (p=0.091). Three deaths due to distant metastatic disease occurred in the placebo arm, and none occurred in the ifetroban arm (p=0.037).

Though metastasis is a primary driver of cancer lethality, most current therapies act on tumor cells directly. Approaches targeting the mechanisms underlying the metastatic process are lacking. Even during clinical remission, microscopic metastases can remain present, leaving many patients at serious risk for metastatic recurrence. The premise of this novel therapy is that antagonizing the thromboxane A2 receptor and blocking platelet activation and aggregation lessens tumor cells’ ability to migrate, spread, cluster, invade distal organs, and evade immune detection.

This was the first trial evaluating the effects of ifetroban in people with solid tumors with high risk for early recurrence, defined as ≥ 50% chance of recurrence within 5 years of diagnosis. The intervention was given after all cancer-related therapies and surgical procedures had been completed; participants received the intervention for 12 months and were then followed for an additional 12 months. Among 29 participants, 10 received placebo and 19 received ifetroban.

"A therapeutic intervention aimed at metastasis prevention for cancer patients with high risk of recurrence that is given during the period of "watchful waiting" could be groundbreaking if proven beneficial in larger scale investigations," said Dr. Ben Ho Park of the Vanderbilt-Ingram Cancer Center. "We look forward to pursuing those pivotal studies as we relentlessly look for treatments to benefit patients living with cancer."

This clinical trial translated robust in silico and preclinical data to humans, confirming safety of ifetroban in patients with solid tumors and preliminarily suggesting that ifetroban may target biologic mechanisms involved in distant metastatic recurrence. A phenome-wide association study (PheWAS) was conducted by Vanderbilt Health investigators using the BioVU biorepository, which linked a naturally occurring genetic variant in the thromboxane receptor gene (TBXA2R) to an increased risk of metastatic disease across multiple cancer types.

Preclinical studies subsequently published in Molecular Cancer Therapeutics demonstrated that ifetroban reduced metastasis in several animal models without affecting tumor growth, and that the drug’s effects appeared to involve strengthening of the vascular endothelial barrier and inhibiting the ability of tumor cells to migrate across blood vessel walls.

"The favorable safety profile of ifetroban in this patient population, combined with the efficacy signals observed in this study, supports continued investigation of ifetroban as a candidate for metastasis prevention," said A.J. Kazimi, chief executive officer of Cumberland Pharmaceuticals. "The contributions of the Vanderbilt Health team have been essential to advancing this program."

Results of this Phase 2a clinical trial will be used to guide the further clinical development verifying efficacy and further demonstrating safety.

About Ifetroban

Ifetroban is a potent and selective thromboxane-prostanoid receptor (TPr) antagonist. It exhibits high affinity for TPr on many cell types including platelets, cardiomyocytes, vascular and airway smooth muscle, and fibroblasts, and lacks agonistic activity. Cumberland is also evaluating ifetroban in Phase 2 clinical programs for patients with Duchenne Muscular Dystrophy, Systemic Sclerosis and Idiopathic Pulmonary Fibrosis. Ifetroban has a favorable safety profile as evidenced by multiple completed clinical trials collectively enrolling over 1,400 people.

(Press release, Cumberland Pharmaceuticals, JUN 2, 2026, View Source [SID1234666380])

On June 2, 2026 KORTUC Inc, a global oncology biotech company, reported that it has launched enrollment into its Phase 1/2 clinical study evaluating KRC-01, a proprietary intratumoral radiosensitizer, in patients with locally advanced cervical cancer. The study examines the impact of Kortuc’s compound in low-oxygen (hypoxic) tumors, which generally do not respond to therapeutic radiation doses. The announcement comes after its trial protocol was reviewed by the U.S. Food and Drug Administration and a $20 million funding round, led by Midas Capital.

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Cervical cancer is the fourth most common cancer among women globally, with an estimated 604,000 new cases and 342,000 deaths in 2020. About 90 percent of new cases and deaths occur in low- and middle-income countries.

Hypoxia – low oxygen levels – inside a cancer cell undermines the efficacy of radiation therapy by making cells more resistant. KRC-01 has shown significant promise in creating a more oxygen-rich environment to improve radiotherapy efficacy. Led by the University of California San Diego, the trial will examine whether adding KRC-01 to standard treatment (chemotherapy combined with radiation) can improve overall survival. A total of 70 patients will be enrolled, with planned expansion to the United Kingdom and India.

"Radiation therapy is a proven curative treatment of cervical cancer," said Kazuyuki Matsuda, CEO of Kortuc. "But the unfortunate reality is about half of cervical cancer patients are unresponsive to this treatment due to hypoxic tumors. Our technology exists today, and it can lead to tangible positive impact on patients’ lives."

KRC-01 is based on a well-understood mechanism of action. Hydrogen peroxide (H₂O₂), a simple and well-known compound with an established safety profile, serves as the active ingredient in the KRC-01 radiosensitizer. As the only agent known to inactivate antioxidative enzymes within tumors, it increases tumor oxygenation and reduces hypoxia, thereby enhancing sensitivity to radiation therapy. Sodium hyaluronate delays the decomposition of H₂O₂, maintaining elevated oxygen partial pressure within the tumor for up to 48 hours following intratumoral injection of KRC-01.

Preliminary results and studies have shown that the newly oxygenated environment makes cancer cells more susceptible to radiation therapy.

The phase 1/2 clinical trial is designed to move efficiently from safety testing to early evaluation of effectiveness.

Phase 1 will include 10 patients and focus on determining the safest and most appropriate dosing schedule for KRC-01 when used alongside standard chemoradiotherapy. KRC-01 will be injected directly into the tumor shortly before radiation treatment.

Phase 2 will enroll 60 additional patients and compare standard treatment alone with standard treatment plus KRC-01. This phase will explore whether KRC-01 may help extend overall survival.
All participants will receive the current standard of care for locally advanced cervical cancer, which includes radiation therapy combined with weekly chemotherapy, followed by brachytherapy (internal radiation).

In addition to cervical cancer, Kortuc is studying the use of its technology for other solid tumor indications, including breast cancer.

(Press release, KORTUC, JUN 2, 2026, View Source [SID1234666396])

On June 2, 2026 Eli Lilly and Company (NYSE: LLY) reported the details of presentations at the European Hematology Association (EHA) (Free EHA Whitepaper) Annual Meeting, taking place June 11-14 in Stockholm, Sweden.

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Data to be highlighted include an oral presentation detailing results from the Phase 3 BRUIN CLL-322 study of Jaypirca (pirtobrutinib), a non-covalent Bruton tyrosine kinase (BTK) inhibitor, as part of a time-limited regimen for patients with previously treated chronic lymphocytic leukemia (CLL). Lilly is strengthening its hematology portfolio through the recently announced proposed acquisitions of Ajax Therapeutics, Inc.* and Kelonia Therapeutics, Inc.*, each of which will present data at the meeting. Ajax Therapeutics will present the first clinical data from the Phase 1 AJX-101 study evaluating AJ1-11095, an investigational first-in-class type II JAK2 inhibitor, in patients with myelofibrosis who have been failed by a type I JAK2 inhibitor. Kelonia Therapeutics will present additional correlative data from the Phase 1 inMMyCAR study of an investigational anti-B-cell maturation antigen (BCMA) targeted in vivo CAR-T therapy in patients with relapsed and refractory multiple myeloma. Both proposed acquisitions by Lilly are pending transaction closes.

"These data at EHA (Free EHA Whitepaper) represent a significant moment for Lilly’s hematology ambitions," said Jacob Van Naarden, executive vice president and president of Lilly Oncology. "The Phase 3 BRUIN CLL-322 results address an important question for patients with relapsed or refractory CLL, demonstrating that time-limited pirtobrutinib can meaningfully improve outcomes when added to an already effective venetoclax-based regimen. Alongside the first clinical data from Ajax and additional results from Kelonia in support of the recently presented data at ASCO (Free ASCO Whitepaper), these results reflect our relentless commitment to pursue meaningful advancements for people living with blood disorders."

Presentation Highlights:

Lilly:

In a late-breaking oral presentation, Lilly will share results from the Phase 3 BRUIN CLL-322 study, evaluating a time-limited regimen of pirtobrutinib plus venetoclax and rituximab versus venetoclax and rituximab in patients with relapsed or refractory CLL/SLL. BRUIN CLL-322 is the first Phase 3 readout in CLL to outperform a venetoclax-containing control arm in any CLL setting. Lilly previously announced that the study met its primary endpoint, demonstrating that the addition of pirtobrutinib to venetoclax plus rituximab led to a statistically significant and clinically meaningful improvement in progression-free survival (PFS). These results were also selected to be featured in the EHA (Free EHA Whitepaper) press program.
Ajax Therapeutics:

In an oral presentation, Ajax will share the first clinical results from the Phase 1 AJX-101 clinical trial, evaluating AJ1-11095, an investigational first-in-class type II JAK2 inhibitor, in patients with myelofibrosis who have been failed by a type I JAK2 inhibitor. These data will also be featured in the EHA (Free EHA Whitepaper) press program.
Kelonia Therapeutics:

In an oral presentation, Kelonia will share additional correlative data from the Phase 1 inMMyCAR dose-escalation study, evaluating KLN-1010 in relapsed or refractory multiple myeloma. Data from this study were recently shared at the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting.
A full list of abstract titles and viewing details are listed below:

Abstract Title

Author

Presentation Type/#

Session Title

Session Date/Time (CEST)

Jaypirca (pirtobrutinib; non-covalent BTK inhibitor)

Fixed-duration pirtobrutinib plus venetoclax–rituximab versus venetoclax–rituximab for patients with previously treated CLL/SLL: A phase 3, randomized study (BRUIN CLL-322)

Matthew Davids

Oral

#LB5001

Late-breaking oral session

Sunday, June 14

9:15 – 10:45

Pirtobrutinib in treatment-naïve patients with CLL/SLL: Pooled results from BRUIN CLL-313 and BRUIN CLL-314

Jennifer Woyach

Poster

#PS1701

Chronic lymphocytic leukemia and related disorders – Clinical

Saturday, June 13

18:45 – 19:45

Patient-reported outcomes of pirtobrutinib vs. bendaR in untreated CLL/SLL: Findings from BRUIN-CLL-313 Phase 3 study

Tomasz Wrobel

Poster

#PF1386

Quality of life, ethics, supportive and palliative care

Friday, June 12

18:45 – 19:45

Investigator Initiated

A Phase 2 study of fixed-duration pirtobrutinib and obinutuzumab in previously untreated CLL

Inhye E. Ann

Oral Session

#S148

Prognostication and first line therapy in CLL

Friday, June 12

18:00 – 18:15

AJ1-11095 (Ajax’s investigational first-in-class type II JAK2 inhibitor)

Results of AJX-101, a Phase 1 clinical trial of the type II JAK2 inhibitor AJ1-11095, in patients with myelofibrosis who have been failed by a type I JAK2 inhibitor

John Mascarehas

Oral Session

#S218

Myeloproliferative neoplasms – Clinical

Saturday, June 13

18:00 – 18:15

KLN-1010 (Kelonia’s investigational in vivo CAR-T therapy)

Successful in vivo CAR-T generation and minimal residual disease (MRD) clearance with KLN-1010 across diverse baseline T Cell phenotypes in relapsed/refractory multiple myeloma (RRMM)

Andrew Spencer

Oral Session

#S185

T cell redirected therapy in multiple myeloma

Thursday, June 11

16:45 – 17:00

For more information on Lilly’s oncology pipeline click here.

*Lilly and Ajax Therapeutics, Inc., and Lilly and Kelonia Therapeutics, Inc., remain separate, independent companies prior to closing. Both transactions are subject to customary closing conditions, including regulatory approvals, with Ajax Therapeutics expected to close in June 2026 and Kelonia Therapeutics expected to close in the second half of 2026.

About Jaypirca (pirtobrutinib)
Jaypirca (pirtobrutinib) (pronounced jay-pihr-kaa) is a highly selective (300 times more selective for BTK versus 98% of other kinases tested in preclinical studies), non-covalent inhibitor of the enzyme BTK.1 BTK is a validated molecular target found across numerous B-cell leukemias and lymphomas including mantle cell lymphoma (MCL) and chronic lymphocytic leukemia (CLL).2,3 Jaypirca is a U.S. FDA-approved oral prescription medicine, 100 mg or 50 mg tablets taken as a once-daily 200 mg dose with or without food until disease progression or unacceptable toxicity.

INDICATIONS FOR JAYPIRCA (pirtobrutinib)
Jaypirca is indicated for the treatment of

Adult patients with relapsed or refractory chronic lymphocytic leukemia or small lymphocytic lymphoma (CLL/SLL) who have previously been treated with a covalent BTK inhibitor.
Adult patients with relapsed or refractory (R/R) mantle cell lymphoma (MCL) after at least two lines of systemic therapy, including a BTK inhibitor. This indication is approved under accelerated approval based on response rate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.
IMPORTANT SAFETY INFORMATION FOR JAYPIRCA (pirtobrutinib)

Infections: Fatal and serious infections (including bacterial, viral, fungal) and opportunistic infections occurred in Jaypirca-treated patients. Across clinical trials, Grade ≥3 infections occurred (25%), most commonly pneumonia (20%); fatal infections (5%), sepsis (6%), and febrile neutropenia (3.8%) occurred. In patients with CLL/SLL, Grade ≥3 infections occurred (32%), with fatal infections occurring in 8%. Opportunistic infections included Pneumocystis jirovecii pneumonia and fungal infection. Consider prophylaxis, including vaccinations and antimicrobial prophylaxis, in patients at increased risk for infection, including opportunistic infections. Monitor for signs and symptoms, evaluate, and treat. Based on severity, reduce dose, temporarily withhold, or permanently discontinue Jaypirca.

Hemorrhage: Fatal and serious hemorrhage has occurred with Jaypirca. Across clinical trials, major hemorrhage (Grade ≥3 bleeding or any central nervous system bleeding) occurred (2.6%), including gastrointestinal hemorrhage; fatal hemorrhage occurred (0.3%). Bleeding of any grade, excluding bruising and petechiae, occurred (16%). Major hemorrhage occurred when taking Jaypirca with (2.0%) and without (0.6%) antithrombotic agents. Consider risks/benefits of co-administering antithrombotic agents with Jaypirca. Monitor for signs of bleeding. Based on severity, reduce dose, temporarily withhold, or permanently discontinue Jaypirca. Consider withholding Jaypirca 3-7 days pre- and post-surgery based on surgery type and bleeding risk.

Cytopenias: Jaypirca can cause cytopenias, including neutropenia, thrombocytopenia, and anemia. Across clinical trials, Grade 3 or 4 cytopenias, including decreased neutrophils (27%), decreased platelets (13%), and decreased hemoglobin (11%), developed. Grade 4 decreased neutrophils (15%) and Grade 4 decreased platelets (6%) developed. Monitor complete blood counts regularly. Based on severity, reduce dose, temporarily withhold, or permanently discontinue Jaypirca.

Cardiac Arrhythmias: Cardiac arrhythmias occurred in patients taking Jaypirca. Across clinical trials, atrial fibrillation or flutter were reported in 3.4% of Jaypirca treated patients, with Grade 3 or 4 atrial fibrillation or flutter in 1.6%. Other serious cardiac arrhythmias such as supraventricular tachycardia and cardiac arrest occurred (0.4%). Cardiac risk factors such as hypertension or previous arrhythmias may increase risk. Monitor and manage signs and symptoms of arrhythmias (e.g., palpitations, dizziness, syncope, dyspnea). Based on severity, reduce dose, temporarily withhold, or permanently discontinue Jaypirca.

Second Primary Malignancies: Across clinical trials, second primary malignancies, including non-skin carcinomas, developed in 9% of Jaypirca-treated patients, most frequently non-melanoma skin cancer (4.4%). Other second primary malignancies included solid tumors (including genitourinary and breast cancers) and melanoma. Advise patients to use sun protection and monitor for development of second primary malignancies.

Hepatotoxicity, Including Drug-Induced Liver Injury (DILI): Hepatotoxicity, including severe, life-threatening, and potentially fatal cases of DILI, has occurred in patients treated with BTK inhibitors, including Jaypirca. Evaluate bilirubin and transaminases at baseline and throughout Jaypirca treatment. For patients who develop abnormal liver tests after Jaypirca, monitor more frequently for liver test abnormalities and clinical signs and symptoms of hepatic toxicity. If DILI is suspected, withhold Jaypirca. If DILI is confirmed, discontinue Jaypirca.

Embryo-Fetal Toxicity: Jaypirca can cause fetal harm. Administration of pirtobrutinib to pregnant rats caused embryo-fetal toxicity, including embryo-fetal mortality and malformations at maternal exposures (AUC) approximately 3-times the recommended 200 mg/day dose. Advise pregnant women of fetal risk and females of reproductive potential to use effective contraception during treatment and for one week after last dose.

Adverse Reactions (ARs) in Patients Who Received Jaypirca

The most common (≥30%) ARs in the pooled safety population of patients with hematologic malignancies (n=704) were decreased neutrophil count (54%), decreased hemoglobin (43%), decreased leukocytes (32%), fatigue (31%), decreased platelets (31%), decreased lymphocyte count (31%), calcium decreased (30%).

Mantle Cell Lymphoma

Serious ARs occurred in 38% of patients, with pneumonia (14%), COVID-19 (4.7%), musculoskeletal pain (3.9%), hemorrhage (2.3%), pleural effusion (2.3%), and sepsis (2.3%) occurring in ≥2% of patients. Fatal ARs within 28 days of last dose occurred in 7% of patients, most commonly due to infections (4.7%), including COVID-19 (3.1% of all patients).

Dose Modifications and Discontinuations Due to ARs: Dose reductions in 4.7%, treatment interruption in 32%, and permanent discontinuation of Jaypirca in 9% of patients. Permanent discontinuation in >1% of patients included pneumonia.

Most common ARs (≥15%) and Select Laboratory Abnormalities (≥10%) (all Grades %; Grade 3-4 %): hemoglobin decreased (42; 9), platelet count decreased (39; 14), neutrophil count decreased (36; 16), lymphocyte count decreased (32; 15), creatinine increased (30; 1.6), fatigue (29; 1.6), musculoskeletal pain (27; 3.9), calcium decreased (19; 1.6), diarrhea (19; -), edema (18; 0.8), dyspnea (17; 2.3), AST increased (17; 1.6), pneumonia (16; 14), bruising (16; -), potassium decreased (13; 1.6), sodium decreased (13; -), lipase increased (12; 4.4), ALT increased (11; 1.6), potassium increased (11; 0.8), alkaline phosphatase increased (11; -). Grade 4 laboratory abnormalities in >5% of patients included neutrophils decreased (10), platelets decreased (7), lymphocytes decreased (6).

Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma from Single-Arm and Randomized Controlled Clinical Trials

Serious ARs occurred in 47-56% of patients across clinical trials. Serious ARs in ≥5% of patients in the single-arm trial were pneumonia (18%), COVID-19 (9%), sepsis (7%), febrile neutropenia (7%). Serious ARs in ≥3% of patients in the randomized controlled trial were pneumonia (21%), COVID-19 (5%), sepsis (3.4%). Fatal ARs within 28-30 days of last Jaypirca dose occurred in 8-11% of patients, most commonly due to infections (7-10%), including sepsis (5%), COVID-19 (2.7-5%), and pneumonia (3.4%).

Dose Modifications and Discontinuations Due to ARs: Dose reductions in 3.6-10%, treatment interruption in 42-51%, and permanent discontinuation of Jaypirca in 9-17% of patients. Permanent discontinuation in >1% of patients included second primary malignancy, pneumonia, COVID-19, neutropenia, sepsis, anemia, and cardiac arrhythmias.

Most common ARs and Select Laboratory Abnormalities (≥20%) (all Grades %, Grade 3-4 %)–in a randomized controlled trial: neutrophil count decreased (54; 26), hemoglobin decreased (45; 10), platelet count decreased (37; 17), pneumonia (28; 16), ALT increased (25; 1.8), creatinine increased (25; -), calcium decreased (23; 0.9), sodium decreased (22; 0.9), bilirubin increased (21; 0.9), upper respiratory tract infections (21; 0.9); in a single-arm trial: neutrophil count decreased (63; 45), hemoglobin decreased (48; 19), calcium decreased (40; 2.8), fatigue (36; 2.7), bruising (36; -), cough (33; -), musculoskeletal pain (32; 0.9), platelet count decreased (30; 15), sodium decreased (30; -), COVID-19 (28; 7), pneumonia (27; 16), diarrhea (26; -), abdominal pain (25; 2.7), lymphocyte count decreased (23; 8), ALT increased (23; 2.8), AST increased (23; 1.9), creatinine increased (23; -), dyspnea (22; 2.7), hemorrhage (22; 2.7), lipase increased (21; 7), alkaline phosphatase increased (21; -), edema (21; -), nausea (21; -), pyrexia (20; 2.7), headache (20; 0.9). Grade 4 laboratory abnormalities in >5% of patients included neutrophils decreased (23).

Drug Interactions

Strong CYP3A Inhibitors: Concomitant use increased pirtobrutinib systemic exposure, which may increase risk of Jaypirca ARs. Avoid using strong CYP3A inhibitors with Jaypirca. If concomitant use is unavoidable, reduce Jaypirca dose according to approved labeling.

Strong or Moderate CYP3A Inducers: Concomitant use decreased pirtobrutinib systemic exposure, which may reduce Jaypirca efficacy. Avoid using Jaypirca with strong or moderate CYP3A inducers. If concomitant use with moderate CYP3A inducers is unavoidable, increase Jaypirca dose according to approved labeling.

Sensitive CYP2C8, CYP2C19, CYP3A, P-gp, or BCRP Substrates: Use with Jaypirca increased their plasma concentrations, which may increase risk of ARs related to these substrates for drugs sensitive to minimal concentration changes. Follow recommendations for these sensitive substrates in their approved labeling.

Use in Specific Populations

Pregnancy and Lactation: Due to potential for Jaypirca to cause fetal harm, verify pregnancy status in females of reproductive potential prior to starting Jaypirca. Presence of pirtobrutinib in human milk is unknown. Advise women to use effective contraception and to not breastfeed while taking Jaypirca and for one week after last dose.

Geriatric Use: In the pooled safety population of patients with hematologic malignancies, patients aged ≥65 years experienced higher rates of Grade ≥3 ARs and serious ARs compared to patients <65 years of age.

Renal Impairment: Because severe renal impairment increases pirtobrutinib exposure, reduce Jaypirca dose in these patients according to approved labeling.

(Press release, Eli Lilly, JUN 2, 2026, View Source [SID1234666365])

On June 2, 2026 AbbVie (NYSE: ABBV) reported it will participate in the Goldman Sachs 47th Annual Global Healthcare Conference on Tuesday, June 9, 2026. Management will participate in a fireside chat at 9:40 a.m. Central time.

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A live audio webcast of the presentation will be accessible through AbbVie’s Investor Relations website at investors.abbvie.com. An archived edition of the session will be available later that day.

(Press release, AbbVie, JUN 2, 2026, View Source [SID1234666381])

On June 2, 2026 Cardiff Oncology, Inc. (Nasdaq: CRDF), a clinical-stage biotechnology company leveraging PLK1 inhibition to develop novel cancer therapies, reported positive results from CRDF-004, a randomized, controlled, dose-finding Phase 2 clinical trial evaluating onvansertib in combination with SoC regimens (FOLFIRI/bevacizumab (bev) or FOLFOX/bev) in patients with first-line RAS-mutated metastatic colorectal cancer (mCRC). Results showed that the selected dose/regimen of the registrational program, onvansertib 30 mg + FOLFIRI/bev, demonstrated deep and durable tumor shrinkage, including clinically meaningful improvements in overall response rate (ORR) and progression-free survival (PFS) compared to SoC alone, with no additive adverse events. The data were presented today by Heinz-Josef Lenz, MD, associate director for clinical research and co-leader of the GI cancers program at the University of Southern California (USC) Norris Comprehensive Cancer Center, in a rapid oral presentation at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting in Chicago.

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Following the completion of the End-of-Phase 2 meeting with the U.S. Food and Drug Administration (FDA), the Company has aligned on the design of the registrational trial with onvansertib in mCRC. The randomized, controlled Phase 3 trial will evaluate the safety and efficacy of onvansertib 30 mg + FOLFIRI/bev as first-line therapy versus standard-of-care FOLFIRI/bev in patients with RAS-mutated mCRC.

"RAS-mutated metastatic colorectal cancer remains a significant clinical challenge, with limited therapeutic progress over the past two decades. Patients with RAS-mutated mCRC continue to face poor outcomes, and there are currently no treatment options specifically approved for patients with RAS-mutated mCRC—except for KRAS G12C mutations, which account for less than 4% of all colorectal cancers," said Dr. Lenz. "With its novel mechanism of action, onvansertib, when combined with FOLFIRI/bev, demonstrated deep and durable tumor shrinkage over time. A positive confirmatory Phase 3 study that builds on the Phase 2 data presented today could potentially establish onvansertib + FOLFIRI/bev as a new standard-of-care for these patients."

Data Highlights from the ongoing Phase 2 trial (Data cut: March 18, 2026):
In the intent-to-treat (ITT) population, the dose selected for the registrational program, 30 mg onvansertib arm in combination with FOLFIRI/ bev achieved:

Primary endpoint of confirmed objective response rate of 72.2% (13/18), compared with 42.1% (8/19) for FOLFIRI/bev alone, a 30% improvement over standard-of-care (SoC). The responses were deeper and more durable in the onvansertib arm.
Secondary endpoint of progression free survival (PFS) hazard ratio (HR) of 0.55 (95% CI: 0.15–2.09) and 0.57 (95% CI: 0.20–1.65) vs. FOLFIRI/bev by Blinded Independent Central Review (BICR) and investigator assessment (IA), respectively.
Median PFS not reached in 30 mg onvansertib + FOLFIRI/bev arm, but has been reached in both SoC arms. Four patients remain on onvansertib treatment beyond 15 months, including 2 beyond 20 months.

Notably, fourteen patients remain on trial, with nine patients in the onvansertib (20 or 30 mg) plus FOLFIRI/bev arms and one patient remaining on SoC.

No meaningful differences in efficacy were observed between the onvansertib + FOLFOX/bev arms and FOLFOX/bev alone.

Safety/Tolerability:
Onvansertib in combination with both chemotherapy (FOLFIRI or FOLFOX)/bev regimens was well-tolerated. There were no major or unexpected toxicities observed and no additive adverse events reported. Grade 3 or higher adverse events were infrequent, with neutropenia being the most common treatment-emergent adverse event across both the onvansertib combination and SoC arms.

"We are excited to share these updated results and are highly encouraged by the consistent efficacy seen with onvansertib in combination with FOLFIRI/bev across two clinical trials in patients with RAS-mutated mCRC," said Mani Mohindru, PhD, President and Chief Executive Officer. "The data generated to date continue to support the potential of onvansertib in combination with standard-of-care FOLFIRI/bev in RAS-mutated mCRC and reinforce our plans to advance the program into a global registrational study. We look forward to providing additional updates on those plans in the coming months."

The ASCO (Free ASCO Whitepaper) presentation will be made available on the Scientific Publications page of the Company’s website following the rapid oral presentation.

Conference Call and Webcast
The investor webcast will take place on June 3, 2026 at 8:30 am ET/5:30 am PT. To register for and access the live webcast, please visit the "Events" page of the Cardiff Oncology website. The slides from the conference call will be posted after the call has concluded.

CRDF-004 Trial Design
The CRDF-004 Phase 2 trial was designed to evaluate the safety, efficacy, and pharmacokinetics of two different doses of onvansertib in combination with FOLFIRI/bevacizumab or FOLFOX/bevacizumab in first-line patients with KRAS- or NRAS-mutated metastatic colorectal cancer (mCRC). The randomized, controlled trial was designed to enroll 110 patients across 6 different arms, and the trial’s endpoints include objective response rate (ORR), progression-free survival (PFS), duration of response, and safety.

For additional information about the trial, please visit www.clinicaltrials.gov (Trial ID: NCT06106308).

About Onvansertib
Onvansertib is a highly specific, oral PLK1 inhibitor advancing toward a registrational trial in first-line RAS-mutated metastatic colorectal cancer (mCRC). In a randomized Phase 2 trial, onvansertib in combination with FOLFIRI/bevacizumab (first-line standard-of-care) demonstrated dose-dependent improvements in overall response rate and progression-free survival compared to standard-of-care alone, building on findings from a prior Phase 2 trial in second-line RAS-mutated mCRC. Based on these results, the Company has selected the 30 mg dose of onvansertib in combination with FOLFIRI/bevacizumab for advancement into a registrational trial in first-line patients with RAS-mutated mCRC.

Onvansertib is also being evaluated in multiple other cancers through investigator-initiated studies, including metastatic pancreatic ductal adenocarcinoma (mPDAC), small cell lung cancer (SCLC), triple-negative breast cancer (TNBC), and chronic myelomonocytic leukemia (CMML).

(Press release, Cardiff Oncology, JUN 2, 2026, View Source [SID1234666397])