Compass Therapeutics to Present Promising Phase 1 Clinical Data for CTX-8371 in Patients with Advanced Malignancies Treated in the Post-Checkpoint Inhibitor Setting at the 2026 ASCO Annual Meeting

On May 21, 2026 Compass Therapeutics, Inc. (Nasdaq: CMPX), a clinical-stage, oncology-focused biopharmaceutical company developing proprietary antibody-based therapeutics to treat multiple human diseases, reported a poster presentation of data from the Phase 1 study of CTX-8371, a novel PD-1×PD-L1 bispecific antibody, in patients with advanced malignancies treated in the post-checkpoint inhibitor setting will be presented at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting, taking place May 29 – June 2, 2026, in Chicago, IL.

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"We are pleased to share the initial clinical data from the dose escalation portion of our ongoing Phase 1 study of CTX-8371 in patients with advanced malignancies treated in the post-checkpoint inhibitor setting at ASCO (Free ASCO Whitepaper)," said Thomas Schuetz, MD, PhD, CEO of Compass and Vice Chairman of the Board of Directors. "Based on the deep, confirmed, and durable responses observed in patients with NSCLC, TNBC and HL, as well as the favorable safety profile, we have initiated cohort expansions in patients with these three malignancies and anticipate reporting additional data in the fourth quarter of 2026."

Details of the presentation are as follows:

Title: Phase 1 Dose Escalation of CTX-8371, a novel PD-1×PD-L1 bispecific antibody, in patients with advanced malignancies post checkpoint inhibition

Presenter: Judy S Wang, MD; Florida Cancer Specialists/Sarah Cannon Research Institute- Sarasota, Sarasota, FL

Date & Time: May 30, 2026 at 1:30-4:30 pm CT

Session: Developmental Therapeutics—Immunotherapy

Abstract number: 2629

Poster Board: 419

Location: McCormick Place Convention Center, Hall A

Data highlights from the poster presentation include:

15 patients completed the dose-limiting toxicity (DLT) evaluation period and had at least one post-baseline disease assessment in the dose escalation cohort of the Phase 1, open-label, first-in-human study evaluating CTX-8371 in patients with metastatic or locally advanced malignancies.
There were three responses: one patient with TNBC achieved > 90% reduction in target tumor lesions, one patient with HL achieved a partial metabolic response, and one patient with NSCLC achieved complete resolution of target lesions after initial pseudo-progression.
At the two highest dose levels (3.0 and 10.0 mg/kg), the overall response rate (ORR) was 33% (2 of 6 evaluable patients). The responses at the two highest dose levels were significantly durable: 10.5+ months for TNBC and 7.5+ months HL. Both of these patients remain on study with continuing durability.
CTX-8371 was well tolerated with no DLTs. All treatment-related adverse events (AEs) were mild Grade 1 or Grade 2, with the exception of one asymptomatic Grade 3 lipase increase.
A copy of the presentation materials can be accessed on the Compass website at View Source once the presentation has concluded.

(Press release, Compass Therapeutics, MAY 21, 2026, View Source [SID1234665988])

Legend Biotech Announces Presentations at ASCO 2026

On May 21, 2026 Legend Biotech Corporation (NASDAQ: LEGN) (Legend Biotech or the Company), a global leader in cell therapy, reported multiple presentations at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting, including a rapid oral presentation highlighting preliminary Phase 1 data for LB2102, its investigational DLL3-targeted CAR-T therapy for relapsed or refractory small-cell lung cancer (SCLC) and large-cell neuroendocrine carcinoma (LCNEC).

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The Company will also present new data on CARVYKTI (ciltacabtagene autoleucel; cilta-cel) at ASCO (Free ASCO Whitepaper), contributing to the growing body of clinical evidence from the CARTITUDE program that supports its demonstrated efficacy and safety profile in patients with multiple myeloma.

"ASCO provides an important forum to share advancements across our emerging and established CAR-T cell therapy programs," said Ying Huang, Ph.D., Chief Executive Officer of Legend Biotech. "The rapid oral presentation for LB2102 underscores continued progress in extending CAR-T approaches into solid tumors, with preliminary data demonstrating a manageable safety profile and early evidence of clinical activity. Additionally, new analyses of CARVYKTI further reinforce the robust clinical profile demonstrated across several studies in multiple myeloma."

LB2102 represents part of the Company’s broader strategy to expand CAR-T therapies beyond hematologic malignancies and into solid tumors. In November 2023, Legend Biotech’s subsidiary, Legend Biotech Ireland Limited, entered into a license agreement with Novartis Pharma AG (the Novartis Agreement), granting Novartis an exclusive worldwide license to develop, manufacture, and commercialize certain Legend Biotech CAR-T cell therapies targeting DLL3.

Under the Novartis Agreement, Legend Biotech is responsible for conducting the current Phase 1 clinical trial of LB2102 in the United States, while Novartis is responsible for conducting all other development, manufacturing, and commercialization for the licensed products, including LB2102.

In addition to the LB2102 presentation, a subgroup analysis of patients from the CARTITUDE-4 trial who responded to bridging therapy will be presented as a poster. The data highlights the efficacy and safety of patients who received treatment according to their risk level—both high and standard-risk cytogenetics—and achieved a partial response or better after bridging therapy.

Additionally, a separate multi‑study analysis on the incidence and characterization of immune effector cell-associated enterocolitis (IEC-EC) from CARVYKTI clinical trials will also be presented as a poster.

CARVYKTI is the first and only BCMA-targeted CAR-T cell therapy approved for the treatment of patients with multiple myeloma who have had at least one prior line of therapy. Globally, CARVYKTI is now commercially available in 18 countries and has been used to treat more than 10,000 patients to date.

ASCO Presentations (May 29-June 2, 2026)

Abstract No. Title Information
Abstract #8012
Rapid Oral Presentation Preliminary results from an ongoing Phase 1 study of LB2102, a dnTGFBR2-armored DLL3-targeted autologous CAR-T cell therapy, in patients with relapsed or refractory SCLC or LCNEC Session Title: Lung Cancer—Non-Small Cell Local-Regional/Small Cell/Other Thoracic Cancers
Date/Time: Sunday, May 31, 2026, 5:00–5:06 PM CDT
Location: Arie Crown Theater
Abstract #7533
Poster Immune effector cell-associated enterocolitis (IEC-EC) incidence and characterization in cilta-cel-treated patients with RRMM in CARTITUDE clinical studies Session Title: Hematologic Malignancies—Plasma Cell Dyscrasia
Poster Board: 412
Date/Time: Monday, June 1, 2026, 9:00 AM-12:00 PM CDT
Location: Hall A
Abstract #7536
Poster Ciltacabtagene autoleucel in lenalidomide-refractory multiple myeloma responding to bridging therapy: CARTITUDE-4 cytogenetic subgroup analysis Session Title: Hematologic Malignancies—Plasma Cell Dyscrasia
Poster Board: 415
Date/Time: Monday, June 1, 2026, 9:00 AM-12:00 PM CDT
Location: Hall A

Investor Relations Event Details:
Legend Biotech will host an in-person investor relations event on Sunday, May 31, 2026, at 6:15 p.m. CT (7:15 p.m. ET) during the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting in Chicago, IL.

The event will feature clinician experts and a discussion about how CARVYKTI is transforming the multiple myeloma treatment landscape.

Investors and other interested parties may join the live webcast through this weblink or by visiting Legend Biotech’s website under Events and Presentations.

CARVYKTI IMPORTANT SAFETY INFORMATION

WARNING: CYTOKINE RELEASE SYNDROME, NEUROLOGIC TOXICITIES, HLH/MAS, PROLONGED and RECURRENT CYTOPENIA, and SECONDARY HEMATOLOGICAL MALIGNANCIES

Cytokine Release Syndrome (CRS), including fatal or life-threatening reactions, occurred in patients following treatment with CARVYKTI. Do not administer CARVYKTI to patients with active infection or inflammatory disorders. Treat severe or life-threatening CRS with tocilizumab or tocilizumab and corticosteroids.

Immune Effector Cell-associated Neurotoxicity Syndrome (ICANS), which may be fatal or life-threatening, occurred following treatment with CARVYKTI, including before CRS onset, concurrently with CRS, after CRS resolution, or in the absence of CRS. Monitor for neurologic events after treatment with CARVYKTI. Provide supportive care and/or corticosteroids as needed.

Parkinsonism and Guillain-Barré syndrome (GBS) and their associated complications resulting in fatal or life-threatening reactions have occurred following treatment with CARVYKTI.

Hemophagocytic Lymphohistiocytosis/Macrophage Activation Syndrome (HLH/MAS), including fatal and life-threatening reactions, occurred in patients following treatment with CARVYKTI. HLH/MAS can occur with CRS or neurologic toxicities.

Prolonged and/or recurrent cytopenias with bleeding and infection and requirement for stem cell transplantation for hematopoietic recovery occurred following treatment with CARVYKTI.

Immune Effector Cell-associated Enterocolitis (IEC-EC), including fatal or life-threatening reactions, occurred following treatment with CARVYKTI.

Secondary hematological malignancies, including myelodysplastic syndrome and acute myeloid leukemia, have occurred in patients following treatment with CARVYKTI. T-cell malignancies have occurred following treatment of hematologic malignancies with BCMA- and CD19-directed genetically modified autologous T-cell immunotherapies, including CARVYKTI.

WARNINGS AND PRECAUTIONS

INCREASED EARLY MORTALITY – In CARTITUDE-4, a (1:1) randomized controlled trial, there was a numerically higher percentage of early deaths in patients randomized to the CARVYKTI treatment arm compared to the control arm. Among patients with deaths occurring within the first 10 months from randomization, a greater proportion (29/208; 14%) occurred in the CARVYKTI arm compared to (25/211; 12%) in the control arm. Of the 29 deaths that occurred in the CARVYKTI arm within the first 10 months of randomization, 10 deaths occurred prior to CARVYKTI infusion, and 19 deaths occurred after CARVYKTI infusion. Of the 10 deaths that occurred prior to CARVYKTI infusion, all occurred due to disease progression, and none occurred due to adverse events. Of the 19 deaths that occurred after CARVYKTI infusion, 3 occurred due to disease progression, and 16 occurred due to adverse events. The most common adverse events were due to infection (n=12).

CYTOKINE RELEASE SYNDROME (CRS), including fatal or life-threatening reactions, occurred following treatment with CARVYKTI. Among patients receiving CARVYKTI for RRMM in the CARTITUDE-1 & -4 studies (N=285), CRS occurred in 84% (238/285), including ≥ Grade 3 CRS (ASTCT 2019) in 4% (11/285) of patients. Median time to onset of CRS, any grade, was 7 days (range: 1 to 23 days). CRS resolved in 82% with a median duration of 4 days (range: 1 to 97 days). The most common manifestations of CRS in all patients combined (≥10%) included fever (84%), hypotension (29%) and aspartate aminotransferase increased (11%). Serious events that may be associated with CRS include pyrexia, hemophagocytic lymphohistiocytosis, respiratory failure, disseminated intravascular coagulation, capillary leak syndrome, and supraventricular and ventricular tachycardia. CRS occurred in 78% of patients in CARTITUDE-4 (3% Grade 3 to 4) and in 95% of patients in CARTITUDE-1 (4% Grade 3 to 4).

Identify CRS based on clinical presentation. Evaluate for and treat other causes of fever, hypoxia, and hypotension. CRS has been reported to be associated with findings of HLH/MAS, and the physiology of the syndromes may overlap. HLH/MAS is a potentially life-threatening condition. In patients with progressive symptoms of CRS or refractory CRS despite treatment, evaluate for evidence of HLH/MAS.

Confirm that a minimum of 2 doses of tocilizumab are available prior to infusion of CARVYKTI.

Of the 285 patients who received CARVYKTI in clinical trials, 53% (150/285) patients received tocilizumab; 35% (100/285) received a single dose, while 18% (50/285) received more than 1 dose of tocilizumab. Overall, 14% (39/285) of patients received at least 1 dose of corticosteroids for treatment of CRS.

Monitor patients at least daily for 7 days following CARVYKTI infusion for signs and symptoms of CRS. Monitor patients for signs or symptoms of CRS for at least 2 weeks after infusion. At the first sign of CRS, immediately institute treatment with supportive care, tocilizumab, or tocilizumab and corticosteroids.

Counsel patients to seek immediate medical attention should signs or symptoms of CRS occur at any time.

NEUROLOGIC TOXICITIES, which may be severe, life-threatening, or fatal, occurred following treatment with CARVYKTI. Neurologic toxicities included ICANS, neurologic toxicity with signs and symptoms of Parkinsonism, GBS, immune mediated myelitis, peripheral neuropathies, and cranial nerve palsies. Counsel patients on the signs and symptoms of these neurologic toxicities, and on the delayed nature of onset of some of these toxicities. Instruct patients to seek immediate medical attention for further assessment and management if signs or symptoms of any of these neurologic toxicities occur at any time.

Among patients receiving CARVYKTI in the CARTITUDE-1 & 4 studies for RRMM, one or more neurologic toxicities occurred in 24% (69/285), including ≥ Grade 3 cases in 7% (19/285) of patients. Median time to onset was 10 days (range: 1 to 101) with 63/69 (91%) of cases developing by 30 days. Neurologic toxicities resolved in 72% (50/69) of patients with a median duration to resolution of 23 days (range: 1 to 544). Of patients developing neurotoxicity, 96% (66/69) also developed CRS. Subtypes of neurologic toxicities included ICANS in 13%, peripheral neuropathy in 7%, cranial nerve palsy in 7%, parkinsonism in 3%, and immune mediated myelitis in 0.4% of the patients.

Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS): Patients receiving CARVYKTI may experience fatal or life-threatening ICANS following treatment with CARVYKTI, including before CRS onset, concurrently with CRS, after CRS resolution, or in the absence of CRS.

Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, ICANS occurred in 13% (36/285), including Grade ≥3 in 2% (6/285) of the patients. Median time to onset of ICANS was 8 days (range: 1 to 28 days). ICANS resolved in 30 of 36 (83%) of patients, with a median time to resolution of 3 days (range: 1 to 143 days). Median duration of ICANS was 6 days (range: 1 to 1229 days) in all patients, including those with ongoing neurologic events at the time of death or data cutoff. Of patients with ICANS, 97% (35/36) had CRS. The onset of ICANS occurred during CRS in 69% of patients, before and after the onset of CRS in 14% of patients, respectively.

Immune Effector Cell-associated Neurotoxicity Syndrome occurred in 7% of patients in CARTITUDE-4 (0.5% Grade 3) and in 23% of patients in CARTITUDE-1 (3% Grade 3). The most frequent (≥2%) manifestations of ICANS included encephalopathy (12%), aphasia (4%), headache (3%), motor dysfunction (3%), ataxia (2%), and sleep disorder (2%).

Monitor patients at least daily for 7 days following CARVYKTI infusion for signs and symptoms of ICANS. Rule out other causes of ICANS symptoms. Monitor patients for signs or symptoms of ICANS for at least 2 weeks after infusion and treat promptly. Neurologic toxicity should be managed with supportive care and/or corticosteroids as needed. Advise patients to avoid driving for at least 2 weeks following infusion.

Parkinsonism: Neurologic toxicity with parkinsonism has been reported in clinical trials of CARVYKTI. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, parkinsonism occurred in 3% (8/285), including Grade ≥3 in 2% (5/285) of the patients. Median time to onset of parkinsonism was 56 days (range: 14 to 914 days). Parkinsonism resolved in 1 of 8 (13%) of patients with a median time to resolution of 523 days. Median duration of parkinsonism was 243.5 days (range: 62 to 720 days) in all patients, including those with ongoing neurologic events at the time of death or data cutoff. The onset of parkinsonism occurred after CRS for all patients and after ICANS for 6 patients.

Parkinsonism occurred in 1% of patients in CARTITUDE-4 (no Grade 3 to 4) and in 6% of patients in CARTITUDE-1 (4% Grade 3 to 4).

Manifestations of parkinsonism included movement disorders, cognitive impairment, and personality changes. Monitor patients for signs and symptoms of parkinsonism that may be delayed in onset and managed with supportive care measures. There is limited efficacy information with medications used for the treatment of Parkinson’s disease for the improvement or resolution of parkinsonism symptoms following CARVYKTI treatment.

Guillain-Barré Syndrome: A fatal outcome following GBS occurred following treatment with CARVYKTI despite treatment with intravenous immunoglobulins. Symptoms reported include those consistent with Miller-Fisher variant of GBS, encephalopathy, motor weakness, speech disturbances, and polyradiculoneuritis.

Monitor for GBS. Evaluate patients presenting with peripheral neuropathy for GBS. Consider treatment of GBS with supportive care measures and in conjunction with immunoglobulins and plasma exchange, depending on severity of GBS.

Immune Mediated Myelitis: Grade 3 myelitis occurred 25 days following treatment with CARVYKTI in CARTITUDE-4 in a patient who received CARVYKTI as subsequent therapy. Symptoms reported included hypoesthesia of the lower extremities and the lower abdomen with impaired sphincter control. Symptoms improved with the use of corticosteroids and intravenous immune globulin. Myelitis was ongoing at the time of death from other cause.

Peripheral Neuropathy occurred following treatment with CARVYKTI. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, peripheral neuropathy occurred in 7% (21/285), including Grade ≥3 in 1% (3/285) of the patients. Median time to onset of peripheral neuropathy was 57 days (range: 1 to 914 days). Peripheral neuropathy resolved in 11 of 21 (52%) of patients with a median time to resolution of 58 days (range: 1 to 215 days). Median duration of peripheral neuropathy was 149.5 days (range: 1 to 692 days) in all patients, including those with ongoing neurologic events at the time of death or data cutoff.

Peripheral neuropathies occurred in 7% of patients in CARTITUDE-4 (0.5% Grade 3 to 4) and in 7% of patients in CARTITUDE-1 (2% Grade 3 to 4). Monitor patients for signs and symptoms of peripheral neuropathies. Patients who experience peripheral neuropathy may also experience cranial nerve palsies or GBS.

Cranial Nerve Palsies occurred following treatment with CARVYKTI. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, cranial nerve palsies occurred in 7% (19/285), including Grade ≥3 in 1% (1/285) of the patients. Median time to onset of cranial nerve palsies was 21 days (range: 17 to 101 days). Cranial nerve palsies resolved in 17 of 19 (89%) of patients with a median time to resolution of 66 days (range: 1 to 209 days). Median duration of cranial nerve palsies was 70 days (range: 1 to 262 days) in all patients, including those with ongoing neurologic events at the time of death or data cutoff. Cranial nerve palsies occurred in 9% of patients in CARTITUDE-4 (1% Grade 3 to 4) and in 3% of patients in CARTITUDE-1 (1% Grade 3 to 4).

The most frequent cranial nerve affected was the 7th cranial nerve. Additionally, cranial nerves III, V, and VI have been reported to be affected.

Monitor patients for signs and symptoms of cranial nerve palsies. Consider management with systemic corticosteroids, depending on the severity and progression of signs and symptoms.

HEMOPHAGOCYTIC LYMPHOHISTIOCYTOSIS (HLH)/MACROPHAGE ACTIVATION SYNDROME (MAS): Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, HLH/MAS occurred in 1% (3/285) of patients. All events of HLH/MAS had onset within 99 days of receiving CARVYKTI, with a median onset of 10 days (range: 8 to 99 days), and all occurred in the setting of ongoing or worsening CRS. The manifestations of HLH/MAS included hyperferritinemia, hypotension, hypoxia with diffuse alveolar damage, coagulopathy and hemorrhage, cytopenia, and multi-organ dysfunction, including renal dysfunction and respiratory failure.

Patients who develop HLH/MAS have an increased risk of severe bleeding. Monitor hematologic parameters in patients with HLH/MAS and transfuse per institutional guidelines. Fatal cases of HLH/MAS occurred following treatment with CARVYKTI.

HLH is a life-threatening condition with a high mortality rate if not recognized and treated early. Treatment of HLH/MAS should be administered per institutional standards.

PROLONGED AND RECURRENT CYTOPENIAS: Patients may exhibit prolonged and recurrent cytopenias following lymphodepleting chemotherapy and CARVYKTI infusion.

Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, Grade 3 or higher cytopenias not resolved by Day 30 following CARVYKTI infusion occurred in 62% (176/285) of the patients and included thrombocytopenia 33% (94/285), neutropenia 27% (76/285), lymphopenia 24% (67/285), and anemia 2% (6/285). After Day 60 following CARVYKTI infusion, 22%, 20%, 5%, and 6% of patients had a recurrence of Grade 3 or 4 lymphopenia, neutropenia, thrombocytopenia, and anemia, respectively, after initial recovery of their Grade 3 or 4 cytopenia. Seventy-seven percent (219/285) of patients had one, two, or three or more recurrences of Grade 3 or 4 cytopenias after initial recovery of Grade 3 or 4 cytopenia. Sixteen and 25 patients had Grade 3 or 4 neutropenia and thrombocytopenia, respectively, at the time of death.

Monitor blood counts prior to and after CARVYKTI infusion. Manage cytopenias with growth factors and blood product transfusion support according to local institutional guidelines.

INFECTIONS: CARVYKTI should not be administered to patients with active infection or inflammatory disorders. Severe, life-threatening, or fatal infections occurred in patients after CARVYKTI infusion.

Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, infections occurred in 57% (163/285), including Grade ≥3 in 24% (69/285) of patients. Grade 3 or 4 infections with an unspecified pathogen occurred in 12%, viral infections in 6%, bacterial infections in 5%, and fungal infections in 1% of patients. Overall, 5% (13/285) of patients had Grade 5 infections, 2.5% of which were due to COVID-19. Patients treated with CARVYKTI had an increased rate of fatal COVID-19 infections compared to the standard therapy arm.

Monitor patients for signs and symptoms of infection before and after CARVYKTI infusion and treat patients appropriately. Administer prophylactic, pre-emptive, and/or therapeutic antimicrobials according to the standard institutional guidelines. Febrile neutropenia was observed in 5% of patients after CARVYKTI infusion and may be concurrent with CRS. In the event of febrile neutropenia, evaluate for infection and manage with broad-spectrum antibiotics, fluids, and other supportive care, as medically indicated. Counsel patients on the importance of prevention measures. Follow institutional guidelines for the vaccination and management of immunocompromised patients with COVID-19.

Viral Reactivation: Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients with hypogammaglobulinemia. Perform screening for Cytomegalovirus (CMV), HBV, hepatitis C virus (HCV), and human immunodeficiency virus (HIV) or any other infectious agents if clinically indicated in accordance with clinical guidelines before collection of cells for manufacturing. Consider antiviral therapy to prevent viral reactivation per local institutional guidelines/clinical practice.

Reactivation of John Cunningham (JC) virus, leading to progressive multifocal leukoencephalopathy (PML), including cases with fatal outcomes, have been reported following treatment. Perform appropriate diagnostic evaluations in patients with neurological adverse events.

HYPOGAMMAGLOBULINEMIA: can occur in patients receiving treatment with CARVYKTI. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, hypogammaglobulinemia adverse event was reported in 36% (102/285) of patients; laboratory IgG levels fell below 500 mg/dL after infusion in 93% (265/285) of patients. Hypogammaglobulinemia either as an adverse reaction or laboratory IgG level below 500 mg/dL after infusion occurred in 94% (267/285) of patients treated. Fifty-six percent (161/285) of patients received intravenous immunoglobulin (IVIG) post CARVYKTI for either an adverse reaction or prophylaxis.

Monitor immunoglobulin levels after treatment with CARVYKTI and administer IVIG for IgG <400 mg/dL. Manage per local institutional guidelines, including infection precautions and antibiotic or antiviral prophylaxis.
Use of Live Vaccines: The safety of immunization with live viral vaccines during or following CARVYKTI treatment has not been studied. Vaccination with live virus vaccines is not recommended for at least 6 weeks prior to the start of lymphodepleting chemotherapy, during CARVYKTI treatment, and until immune recovery following treatment with CARVYKTI.

HYPERSENSITIVITY REACTIONS occurred following treatment with CARVYKTI. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, hypersensitivity reactions occurred in 5% (13/285), all of which were ≤2 Grade. Manifestations of hypersensitivity reactions included flushing, chest discomfort, tachycardia, wheezing, tremor, burning sensation, non-cardiac chest pain, and pyrexia.

Serious hypersensitivity reactions, including anaphylaxis, may be due to the dimethyl sulfoxide (DMSO) in CARVYKTI. Patients should be carefully monitored for 2 hours after infusion for signs and symptoms of severe reaction. Treat promptly and manage patients appropriately according to the severity of the hypersensitivity reaction.

IMMUNE EFFECTOR CELL-ASSOCIATED ENTERCOLITIS (IEC-EC) has occurred in patients treated with CARVYKTI. Manifestations include severe or prolonged diarrhea, abdominal pain, and weight loss requiring parenteral nutrition. IEC-EC has been associated with fatal outcome from perforation or sepsis. Manage according to institutional guidelines, including referral to gastroenterology and infectious disease specialists.

In cases of refractory IEC-EC, consider additional workup to exclude alternative etiologies, including T-cell lymphoma of the GI tract, which has been reported in the post marketing setting.

SECONDARY MALIGNANCIES: Patients treated with CARVYKTI may develop secondary malignancies. Among patients receiving CARVYKTI in the CARTITUDE-1 & -4 studies, myeloid neoplasms occurred in 5% (13/285) of patients (9 cases of myelodysplastic syndrome, 3 cases of acute myeloid leukemia, and 1 case of myelodysplastic syndrome followed by acute myeloid leukemia). The median time to onset of myeloid neoplasms was 447 days (range: 56 to 870 days) after treatment with CARVYKTI. Ten of these 13 patients died following the development of myeloid neoplasms; 2 of the 13 cases of myeloid neoplasm occurred after initiation of subsequent antimyeloma therapy. Cases of myelodysplastic syndrome and acute myeloid leukemia have also been reported in the post marketing setting. T-cell malignancies have occurred following treatment of hematologic malignancies with BCMA- and CD19-directed genetically modified autologous T-cell immunotherapies, including CARVYKTI. Mature T-cell malignancies, including CAR-positive tumors, may present as soon as weeks following infusions, and may include fatal outcomes.

Monitor lifelong for secondary malignancies. In the event that a secondary malignancy occurs, contact Janssen Biotech, Inc., at 1-800-526-7736 for reporting and to obtain instructions on collection of patient samples.

ADVERSE REACTIONS
The most common nonlaboratory adverse reactions (incidence greater than 20%) are pyrexia, cytokine release syndrome, hypogammaglobulinemia, hypotension, musculoskeletal pain, fatigue, infections-pathogen unspecified, cough, chills, diarrhea, nausea, encephalopathy, decreased appetite, upper respiratory tract infection, headache, tachycardia, dizziness, dyspnea, edema, viral infections, coagulopathy, constipation, and vomiting. The most common Grade 3 or 4 laboratory adverse reactions (incidence greater than or equal to 50%) include lymphopenia, neutropenia, white blood cell decreased, thrombocytopenia, and anemia.

Please read full Prescribing Information, including Boxed Warning, for CARVYKTI.

ABOUT CARVYKTI (CILTACABTAGENE AUTOLEUCEL; CILTA-CEL)
Ciltacabtagene autoleucel is a BCMA-directed, genetically modified autologous T-cell immunotherapy, which involves reprogramming a patient’s own T-cells with a transgene encoding a chimeric antigen receptor (CAR) that identifies and eliminates cells that express BCMA. The cilta-cel CAR protein features two BCMA-targeting single-domain antibodies designed to confer high avidity against human BCMA. Upon binding to BCMA-expressing cells, the CAR promotes T-cell activation, expansion, and elimination of target cells.i

In December 2017, Legend Biotech entered into an exclusive worldwide license and collaboration agreement with Janssen Biotech, Inc., a Johnson & Johnson company, to develop and commercialize cilta-cel. In February 2022, cilta-cel was approved by the U.S. Food and Drug Administration (FDA) under the brand name CARVYKTI for the treatment of adults with relapsed or refractory multiple myeloma. In April 2024, cilta-cel was approved for the second-line treatment of patients with relapsed/refractory myeloma who have received at least one prior line of therapy, including a proteasome inhibitor, an immunomodulatory agent, and are refractory to lenalidomide.

In May 2022, the European Commission (EC) granted conditional marketing authorization of CARVYKTI for the treatment of adults with relapsed and refractory multiple myeloma. In September 2022, Japan’s Ministry of Health, Labour and Welfare (MHLW) approved CARVYKTI. Cilta-cel was granted Breakthrough Therapy Designation in the U.S. in December 2019 and in China in August 2020. In addition, cilta-cel received a PRIority MEdicines (PRIME) designation from the European Commission in April 2019. Cilta-cel also received Orphan Drug Designation from the U.S. FDA in February 2019, from the European Commission in February 2020, and from the Pharmaceuticals and Medicinal Devices Agency (PMDA) in Japan in June 2020. In March 2022, the European Medicines Agency’s Committee for Orphan Medicinal Products recommended by consensus that the orphan designation for cilta-cel be maintained on the basis of clinical data demonstrating improved and sustained complete response rates following treatment.

ABOUT MULTIPLE MYELOMA
Multiple myeloma is an incurable blood cancer that starts in the bone marrow and is characterized by an excessive proliferation of plasma cells.ii In 2024, it is estimated that more than 35,000 people will be diagnosed with multiple myeloma, and more than 12,000 people will die from the disease in the U.S.iii While some patients with multiple myeloma initially have no symptoms, most patients are diagnosed due to symptoms that can include bone problems, low blood counts, calcium elevation, kidney problems, or infections.iv

ABOUT CARTITUDE-4
CARTITUDE-4 (NCT04181827) is an ongoing, international, randomized, open-label Phase 3 study evaluating the efficacy and safety of cilta-cel versus pomalidomide, bortezomib and dexamethasone (PVd) or daratumumab, pomalidomide and dexamethasone (DPd) in adult patients with relapsed and lenalidomide-refractory multiple myeloma who received one to three prior lines of therapy, including a PI and an IMiD.v

ABOUT LB2102
NCT05680922 is a Phase 1, first-in-human, open-label, multicenter, dose escalation and expansion study of DLL3-targeted chimeric antigen receptor T-cells (LB2102) in patients with extensive stage small cell lung cancer or large cell neuroendocrine lung cancer.vi

ABOUT SMALL-CELL LUNG CANCER
Lung cancer is a leading cause of cancer deaths, contributing to 25 percent of all cancer-related fatalities annually in the United States.vii Small cell lung cancer (SCLC) is the most aggressive, and accounts for roughly 10-15 percent of lung cancer cases in the United States.viii,ix An estimated 30,000 to 35,000 people are newly diagnosed with the disease each year.16 This cancer becomes more difficult to treat once it has spread and becomes extensive stage SCLC. Approximately 60 to 70 percent of SCLC patients are diagnosed with metastatic SCLC.

(Press release, Legend Biotech, MAY 21, 2026, View Source [SID1234665987])

Cardiff Oncology Announces Webcast to Discuss Updated Phase 2 CRDF-004 Data for Onvansertib in First-Line RAS-Mutated mCRC

On May 21, 2026 Cardiff Oncology, Inc. (Nasdaq: CRDF), a clinical-stage biotechnology company leveraging PLK1 inhibition to develop novel cancer therapies, reported that it will host an investor webcast featuring members of management on June 3, 2026 at 8:30 am ET to review updated data from CRDF-004, a randomized dose-finding Phase 2 clinical trial evaluating onvansertib in combination with standard-of-care regimens (FOLFIRI/bevacizumab or FOLFOX/bevacizumab) in patients with first-line RAS-mutated metastatic colorectal cancer (mCRC).

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Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

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The updated CRDF-004 data will first be presented during a rapid oral session at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting on June 2, 2026 at 8:00 am CT/9:00 am ET and will build on the CRDF-004 data previously presented in January 2026. More details about the oral presentation are available on the Company’s website here and the full abstract is now available on the ASCO (Free ASCO Whitepaper) website.

Investor Webcast Details
The investor webcast will take place on June 3 at 8:30 am ET. To register for and access the live webcast, please visit the "Events" page of the Cardiff Oncology website.

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, MAY 21, 2026, View Source [SID1234665986])

Eikon Therapeutics Announces Availability of Six Abstracts for Presentation at the 2026 Annual Meeting of the American Society of Clinical Oncology

On May 21, 2026 Eikon Therapeutics, Inc. (Nasdaq: EIKN) ("Eikon"), a late-stage clinical biopharmaceutical company dedicated to developing innovative medicines to address serious unmet medical needs, reported the publication of full-text abstracts from its lead programs to be presented at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting in Chicago beginning on 29 May 2026. The six accepted presentations highlight clinical progress across Eikon’s pipeline, including the TLR7 and TLR8 dual-agonist EIK1001 trials in NSCLC and advanced melanoma, updated data for its highly selective PARP1 inhibitor EIK1003, and early development progress for the WRN inhibitor candidate EIK1005.

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"We look forward to presenting these data at the ASCO (Free ASCO Whitepaper) Annual Meeting, which reflect the breadth of our oncology pipeline and our focus on advancing novel therapeutic approaches across multiple mechanisms and treatment settings," said Roger M. Perlmutter, M.D., Ph.D., Chief Executive Officer and Board Chair of Eikon. "Our programs are evaluating both monotherapy and combination strategies in patients with advanced disease, with the goal of generating insights that can inform patient selection, optimize treatment approaches, and ultimately support future registration of these novel therapeutics."

2026 ASCO (Free ASCO Whitepaper) Abstract Titles and Presentation Details:

EIK1001

Title: Efficacy, safety and cytokine profiling with addition of the toll-like receptor (TLR) 7/8 dual agonist EIK1001 to Standard of Care First-Line Therapy: the Phase 2 TeLuRide-005 trial in Stage 4 Non-Small Cell Lung Cancer

Title: Adaptive Phase 2/3 Study of EIK1001, a TLR7/8 Dual Agonist, in Combination with Pembrolizumab, as First-Line Therapy in Participants with Advanced Melanoma (TeLuRide-006)

Title: A Phase 2/3 Study of EIK1001 in Combination with Pembrolizumab and Chemotherapy in Participants with Stage 4 Non-Small Cell Lung Cancer (TeLuRide-008)

EIK1003

Title: EIK1003, a PARP1-selective inhibitor, in combination with paclitaxel (PTX): Initial combination and updated monotherapy results from a Phase 1/2 study EIK1003-001 in advanced solid tumors

EIK1005

Title: First-in-Human Study to Evaluate the Safety, Tolerability, and PK of EIK1005, a Novel WRN Inhibitor in Healthy Participants

Title: Phase 1/2 Study of the novel Werner helicase inhibitor EIK1005 as Monotherapy and in Combination with Pembrolizumab in Patients with Advanced Solid Tumors, including MSI-H or dMMR Tumors

(Press release, Eikon Therapeutics, MAY 21, 2026, View Source [SID1234665985])

Remix Therapeutics Announces Positive Data from Phase 1/2 ARIA Study of First-in-Class MYB mRNA Degrader, REM-422, in Patients with Adenoid Cystic Carcinoma (ACC) at the American Society of Clinical Oncology Annual Meeting 2026

On May 21, 2026 Remix Therapeutics (Remix), Inc., a clinical-stage biotechnology company developing small molecule therapies to modulate RNA processing and address the underlying drivers of disease, reported positive results from its ongoing Phase 1/2 ARIA clinical trial evaluating REM-422, a first-in-class MYB mRNA degrader, in patients with recurrent or metastatic (R/M) adenoid cystic carcinoma (ACC). The data will be featured in an oral presentation at the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting 2026, delivered by Renata Ferrarotto, MD, professor of thoracic/head and neck medical oncology at The University of Texas MD Anderson Cancer Center.

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Results from the Phase 1 dose-escalation cohort found anti-tumor activity in patients with R/M ACC across molecular subtypes and previous lines of therapy, including patients who received antibody-drug conjugates. In the recommended Phase 2 dose (RP2D) biomarker positive cohort, the overall response rate was 43% (3 out of 7 patients) with the duration of response exceeding one year and ongoing. The disease control rate was 100% with several patients approaching two years on treatment with dosing ongoing. REM-422 was generally well tolerated at the RP2D with no dose-limiting toxicities observed. The most common treatment-related adverse events were epistaxis, fatigue, and anemia, all of which were grade 1 or 2.

"Patients with ACC have long lacked effective therapeutic options, and REM-422 represents a novel first-in-class oral mRNA degrader targeting MYB. These data show encouraging anti-tumor activity across biomarker-selected patients, along with a favorable safety profile," said Dr. Ferrarotto. "Notably, tumor responses were durable and deepened over time suggesting potential for long-term benefit."

REM-422 is the first oral mRNA degrader of MYB demonstrating proof-of-concept in ACC. In this study, pharmacokinetic and pharmacodynamic analyses confirmed robust compound exposure in blood and target engagement with reductions in MYB mRNA and protein levels in tumor biopsies.

"These positive ARIA trial data, including a significant overall response rate coupled with meaningful durability, 100% disease control and a favorable safety profile, strongly support the potential of REM-422 for patients with ACC," said Pete Smith, PhD, Co-Founder and CEO of Remix. "We are working to complete enrollment in the Phase 2 portion of the trial and look forward to progressing the development of REM-422 for patients with ACC who have seen minimal therapeutic progress and have no approved treatment options."

About REM-422
REM-422 is a first-in-class, potent, selective, and oral small molecule mRNA degrader that induces the reduction of MYB mRNA and subsequent protein expression. REM-422 functions by facilitating the incorporation of a poison exon in the MYB mRNA transcript, leading to nonsense-mediated decay of the transcript. REM-422 is currently in Phase 1/2 clinical studies in both Adenoid Cystic Carcinoma (ACC) and Acute Myeloid Leukemia (AML) or high-risk myelodysplastic syndrome (HR-MDS). The U.S. Food and Drug Administration granted REM-422 Orphan Drug Designation for ACC and AML and Fast Track designation for ACC.

About the ARIA (A study of REM-422 In Adenoid cystic carcinoma) Clinical Trial
This Phase 1/2, open-label, non-randomized, multicenter study (NCT06118086) is investigating REM-422 in patients with recurrent, metastatic or unresectable Adenoid Cystic Carcinoma (ACC). The study includes a Dose Escalation Phase and a Dose Expansion Phase. The purpose of the Dose Escalation Phase is to determine the maximum tolerated dose and/or recommended Phase 2 dose (RP2D) of REM-422 in patients with recurrent, metastatic, or unresectable ACC. The purpose of Dose Expansion is to further evaluate the safety and anti-tumor activity of the REM-422 RP2D in biomarker positive patients.

About Adenoid Cystic Carcinoma
Adenoid cystic carcinoma (ACC) is a solid tumor that most commonly arises in the salivary glands characterized by frequent recurrent, perineural invasion and dysregulation of the MYB oncogene. Depending on the location of the tumor, symptoms may include numbness of the face, difficulties swallowing, changes in vision, or difficulty breathing, among others. Many therapeutic approaches, such as chemotherapy, kinase inhibitors, and immunotherapy have been studied in ACC with modest or disappointing results, and there remain no approved treatment options.

(Press release, Remix Therapeutics, MAY 21, 2026, View Source [SID1234665984])