Innovent Presents Updated Data From Innovative Anti-CLDN18.2 ADC (IBI343) Phase 1 Study in Patients with Advanced Pancreatic Cancer at the ESMO Asia Congress 2024

On December 8, 2024 Innovent Biologics, Inc. ("Innovent") (HKEX: 01801), a world-class biopharmaceutical company that develops, manufactures and commercializes high-quality medicines for the treatment of oncology, cardiovascular and metabolic, autoimmune, ophthalmology and other major diseases, reported updated Phase 1 study results of IBI343, an innovative anti-CLDN18.2 ADC, for the treatment of advanced pancreatic ductal adenocarcinoma (PDAC) during an oral presentation at the ESMO (Free ESMO Whitepaper) Asia Congress 2024 (Press release, Innovent Biologics, DEC 8, 2024, View Source;302324790.html [SID1234648882]). The results highlighted the excellent efficacy and favorable safety profile of IBI343 in an expanded cohort of CLDN18.2-positive patients with previously treated PDAC.

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Pancreatic cancer is one of the most aggressive malignancies worldwide. Most patients are diagnosed in the middle and late stages and often develop resistance to standard chemotherapy, resulting in a 5-year survival rate of less than 10%1. According to the GLOBOCAN 2022 statistics2, there are approximately 510,000 new cases and 467,000 deaths globally from pancreatic cancer each year, with China accounting for 120,000 new cases and 110,000 deaths annually.

This Phase 1/1b study is a multi-regional, dose escalation and expansion clinical trial (NCT05458219). Preliminary data were presented at 2024 ASCO (Free ASCO Whitepaper) and the updated results from the study’s dose-expansion cohort were presented at the 2024 ESMO (Free ESMO Whitepaper) Asia Congress as follows:

As of September 6, 2024, a total of 43 patients with CLDN18.2-positive (≥60% tumor cells with membranous staining intensity ≥1+ by IHC) advanced PDAC received IBI343 6 mg/kg Q3W monotherapy. All participants had previously received at least 1 line of prior therapy, and 60.5% had received 2 or more lines of anticancer treatment.
43 patients were efficacy evaluable with overall objective response rate (ORR) of 32.6%, confirmed objective response rate (cORR) of 23.3%, and confirmed disease control rate (cDCR) of 81.4%.
As the data cutoff date, 4 out of 10 cORR patients had progressed, the median duration of response (mDoR) was 7.0 (4.0-NC) months, and the 6-month DoR rate was 63%. 26 patients occurred PFS events, with a median progression-free survival (mPFS) of 5.3 (4.1-7.4) months, and OS data is not yet mature.
The updated safety results demonstrated the favorable safety profile of IBI343 with a consistently low rate of gastrointestinal toxicity and no new safety signals. 97.7% of the participants experienced treatment-emergent adverse events (TEAEs), with the most common TEAEs being anemia, neutrophil count decreased, decreased appetite, nausea, and white blood cell count decreased. 51.2% of the participants experienced ≥ grade 3 TEAEs, and no ≥ grade 3 nausea and vomiting occurred. No TEAE led to death.
Professor Xianjun Yu from Fudan University Cancer Hospital, said, "Pancreatic cancer is one of the most malignant tumors of the digestive tract. Most patients are already in the advanced stage when diagnosed, and the 5-year survival rate is only about 10%1. Currently, chemotherapy is still the main first- and second-line treatment for advanced pancreatic cancer. The clinical options for second-line treatment are particularly limited, with a chemotherapy response rate of only 6-16%, median progression free survival of 2 to 5 months, and a median survival of approximately 6 to 9 months3, representing an urgent clinical need. After enrolling more advanced pancreatic cancer participants, the data update of IBI343 continued to show encouraging efficacy signals as well as manageable safety, and I hope its further development will eventually bring a breakthrough therapy in this difficult-to-treat cancer."

Dr. Hui Zhou, Senior Vice President of Innovent, said, "We are pleased to share the updated clinical data for IBI343. With the unique Fc-silent antibody design, stable linker and potent TOPO1i payload, IBI343 is the first ADC candidate globally to demonstrate encouraging efficacy and a favorable safety profile in the treatment of advanced pancreatic cancer. IBI343 offers a new direction and renewed hope for pancreatic cancer treatment. It is worth mentioning that, the FDA has approved IBI343’s IND application for this indication and granted Fast Track designation, and we will initiate patient enrollment for IBI343’s Phase 1 trial in the United States. We will continue to advance IBI343’s clinical programs, hoping to bring breakthrough treatments to patients worldwide."

About IBI343(Anti-CLDN18.2 ADC)

IBI343 is a recombinant human anti-CLDN18.2 monoclonal antibody-drug conjugate (ADC) developed by Innovent Biologics. IBI343 binds to the CLDN18.2-expressing tumor cells, the CLDN18.2 dependent ADC internalization will occur and the drug is released resulting in DNA damage and eventually apoptosis of the tumor cells. The freed drug can also diffuse across the plasma membrane to reach and kill the neighboring cells, resulting in "bystander killing effect".

As an innovative TOPO1i ADC, IBI343 has demonstrated tolerable safety and encouraging efficacy signals in Phase 1 clinical studies. The therapeutic potential of IBI343 is currently being explored in tumor types such as gastric and pancreatic cancer.

In May 2024, China’s National Medical Products Administration (NMPA) granted breakthrough therapy designation (BTD) to IBI343 for use as a single agent in patients with CLDN18.2–positive gastric or gastroesophageal junction (GEJ) adenocarcinoma who experienced disease progression following two prior lines of systemic treatment. The Phase 3 trial (NCT06238843) of IBI343 for this indication is ongoing.

In June 2024, IBI343 received Fast Track Designation by the U.S. Food and Drug Administration (FDA) for the treatment of advanced unresectable or metastatic pancreatic ductal adenocarcinoma (PDAC) that has relapsed and/or is refractory to one prior line of therapy. The multi-regional Phase 1 trial (NCT05458219) of IBI343 for previously treated PDAC is ongoing.

C4 Therapeutics Presents Cemsidomide Phase 1 Data at the American Society for Hematology (ASH) Annual Meeting that Demonstrated Potential to Become Best-in-Class IKZF1/3 Degrader

On December 7, 2024 C4 Therapeutics, Inc. (C4T) (Nasdaq: CCCC), a clinical-stage biopharmaceutical company dedicated to advancing targeted protein degradation science, reported clinical data from the ongoing Phase 1 trial of cemsidomide, an orally bioavailable small molecule degrader of IKZF1/3, at the ASH (Free ASH Whitepaper) Annual Meeting (Press release, C4 Therapeutics, DEC 8, 2024, View Source [SID1234648865]). Presentations included a poster highlighting results for cemsidomide in combination with dexamethasone in multiple myeloma, and an oral presentation delivering initial results for cemsidomide as a monotherapy for non-Hodgkin’s lymphoma. These presentations reinforce the potential of cemsidomide to become a backbone therapy of choice in both multiple myeloma and non-Hodgkin’s lymphoma where IKZF1/3 degradation is warranted.

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C4T designed cemsidomide to be a more potent and selective degrader of IKZF1/3 with unique pharmacokinetic properties, with the goal to improve the therapeutic index to treat multiple myeloma and non-Hodgkin’s lymphoma—both alone and in combination with other therapeutic agents in these therapeutic areas.

"Cemsidomide continues to deliver clinical data demonstrating its potential to be used in both multi-refractory patients and as part of combination therapies across all lines of treatment for a significant number of patients with multiple myeloma or non-Hodgkin’s lymphoma," said Len Reyno, M.D., chief medical officer of C4 Therapeutics. "We look forward to leveraging today’s data to inform clinical development strategies in both multiple myeloma and non-Hodgkin’s lymphoma that has the potential to unlock the value of cemsidomide for patients in need of innovative therapies across treatment lines."

Multiple Myeloma (MM)
At the ASH (Free ASH Whitepaper) Annual Meeting, C4T presented safety and anti-myeloma data demonstrating cemsidomide has the potential to become a best-in-class IKZF1/3 degrader used as a backbone therapy of choice for patients with multiple myeloma where IKZF1/3 degradation is warranted. These data support the future development of cemsidomide across treatment lines in combination with other anti-myeloma agents.

As of the data cutoff date of October 11, 2024, a total of 47 patients received cemsidomide in combination with dexamethasone across four dose levels (50 µg dosed Monday, Wednesday, Friday (MWF); 37.5 µg dosed once daily (QD); 62.5 µg QD; 75 µg QD). Patients were heavily pretreated, receiving a median of six prior therapies. All patients (100 percent) were triple-class exposed, defined as exposure to one or more immunomodulatory agents, one or more proteasome inhibitors, and one anti-CD38 antibody. Thirty-three patients (70 percent) received prior BCMA directed therapy. Thirty-one patients (66 percent) received prior CAR-T or T-cell engager therapy.

Safety: Cemsidomide in combination with dexamethasone was well tolerated.

As of the data cutoff date, 47 patients were evaluable for safety.
The most common adverse events (AEs) Grade 3 or above were neutropenia (n=18), anemia (n=10) and infections (n=8). No patients discontinued therapy due to neutropenia.
No patients experienced a treatment emergent adverse event that led to dose reduction.
The maximum tolerated dose has not yet been identified. Enrollment is currently ongoing at the 100 µg QD dose level.
Anti-myeloma activity: Cemsidomide in combination with dexamethasone demonstrated anti-myeloma activity across a broad range of doses, highlighting a wide therapeutic range.

As of the data cutoff, 42 patients were evaluable for anti-myeloma activity.
Across all dose levels, cemsidomide in combination with dexamethasone achieved a 26 percent ORR and a 40 percent clinical benefit rate (CBR).
At the highest dose level explored to date (75 µg QD), cemsidomide achieved a 36 percent ORR and a 45 percent CBR.
At the two highest dose levels evaluated to date (62.5 µg QD and 75 µg QD), 62 percent of patients remained on therapy as of the data cutoff date.
Binod Dhakal, M.D., M.S., associate professor of medicine, Medical College of Wisconsin, Division of Hematology, presented a poster highlighting the MM results. He commented: "The data presented at the ASH (Free ASH Whitepaper) Annual Meeting demonstrate cemsidomide in combination with dexamethasone is active and well-tolerated over a range of doses in a heavily pretreated, relapsed/refractory multiple myeloma patient population—including a majority of patients who have received T-cell directed therapies who are challenging to treat. I look forward to cemsidomide’s continued development as a potential new treatment option for patients in the evolving myeloma landscape."

C4T has identified 75 µg QD as a target dose for various dexamethasone combination regimens; as dose escalation continues, higher doses may also be considered. For immune-based combination strategies, C4T believes doses lower than 75 µg QD will be optimal based on anti-myeloma activity and immune activation observed in the previously disclosed monotherapy data set.

C4T has identified the following next steps in cemsidomide MM development:

Complete Phase 1 dose escalation trial in MM to establish go forward doses
Initiate initial combination trials
Engage regulatory authorities on registrational path
Non-Hodgkin’s Lymphoma (NHL)
At the ASH (Free ASH Whitepaper) Annual Meeting, C4T also presented safety and anti-lymphoma data that reinforce C4T’s belief that IKZF1/3 degradation remains relevant in lymphoma. Based on the emerging anti-lymphoma signal demonstrated in patients with PTCL, C4T believes cemsidomide could be further developed in areas of high unmet need.

As of the data cutoff date of October 11, 2024, a total of 23 patients received cemsidomide monotherapy across five dose levels (25 µg MWF; 50 µg MWF QD; 37.5 µg QD; 62.5 µg QD; 100 µg QD). Patients were heavily pretreated, receiving a median of three prior therapies. Seventeen patients had refractory progressive PTCL and six patients had refractory progressive B-cell lymphoma.

Safety: Cemsidomide monotherapy was well tolerated and additional dose finding is ongoing.

As of the data cutoff, 23 patients were evaluable for safety.
The most common AEs Grade 3 or above were neutropenia (n=11), infections (n=6), febrile neutropenia (n=4) and anemia (n=4). No patients discontinued therapy due to neutropenia.
At this time, the maximum tolerated dose has not been defined. Two dose-limiting toxicities occurred at the 100 µg QD dose level. As a result, a 75 µg QD cohort was opened to refine the understanding of dose and safety in the NHL population; this cohort is currently enrolling patients. Escalation above 75 µg QD may be explored pending the outcome of the cohort.
Anti-lymphoma activity: Cemsidomide monotherapy demonstrated anti-lymphoma activity across a broad range of doses.

As of the data cutoff, 21 patients were evaluable for efficacy, 16 of which had PTCL.
Cemsidomide displays a differentiated pharmacokinetic profile with an approximate two-day half-life and an ability to induce rapid and potent degradation of IKZF1/3.
Across all dose levels explored, cemsidomide achieved a 38 percent ORR and 19 percent CMR rate.
In patients with PTCL, cemsidomide achieved a 44 percent ORR and 25 percent CMR rate.
Steve Horwitz, M.D., lymphoma specialist and cellular therapist, Memorial Sloan Kettering Cancer Center, delivered an oral presentation highlighting the NHL results at the ASH (Free ASH Whitepaper) Annual Meeting. He commented: "I am pleased to share the first clinical data on monotherapy cemsidomide in non-Hodgkin’s lymphoma, which demonstrated its well-tolerated safety profile and compelling anti-lymphoma activity. These initial data are encouraging, particularly in PTCL where relapsed/refractory patients lack effective targeted therapies. We believe these Phase 1 monotherapy data demonstrate that cemsidomide is well suited for further development in earlier lines of treatment and in combination with other anti-lymphoma agents."

C4T has identified the following next steps in cemsidomide NHL development:

Complete Phase 1 dose escalation trial and identify go forward dose
Initiate expansion cohort for PTCL
Engage regulatory authorities on registrational path
C4T Webcast for Analysts and Investors
C4T will host an investor webcast today December 8, 2024, at 5 pm EST. To join the webcast, please visit this link or the "Events & Presentations" page of the Investors section on the company’s website at www.c4therapeutics.com. A replay of the webcast will be archived and available following the event.

About Cemsidomide
Cemsidomide is an investigational, orally bioavailable small-molecule degrader designed to be a more potent and selective degrader of IKZF1/3, transcription factors that drive multiple myeloma (MM) and non-Hodgkin’s lymphomas (NHL), with unique pharmacokinetic properties. Clinical data has shown that cemsidomide is well-tolerated. In MM, cemsidomide displays evidence of anti-myeloma activity and immunomodulatory effects. In NHL, cemsidomide displays evidence of anti-lymphoma activity. More information may be accessed at www.clinicaltrials.gov (identifier: NCT04756726).

About IKZF1/3
IKZF1 (Ikaros) and IKZF3 (Aiolos) are transcription factors that directly regulate the activity of IRF4, a transcription factor that regulates downstream immune cell differentiation. Aberrant IRF4 is associated with both lymphoma and multiple myeloma proliferative T, B and plasma cell populations. Down regulation of IRF4 promotes the death of both myeloma and lymphoma cells.

About Multiple Myeloma
Multiple myeloma (MM) is a rare blood cancer affecting plasma cells. Approximately 36,000 people in the United States are diagnosed with MM each year. Despite advances in treatment, multiple myeloma remains incurable. Treatment combinations include IKZF1/3 degraders, which are established backbone therapies, across lines of therapy.

About non-Hodgkin’s Lymphoma
Non-Hodgkin’s lymphoma (NHL) is one of the most common cancers in the United States. NHL forms in cells of the immune system called lymphocytes. In the United States, approximately 80,000 people are diagnosed with NHL each year. IKZF1/3 degraders are used across NHL subtypes.

TECVAYLI® (teclistamab-cqyv) demonstrates potential as frontline combination therapy for patients with newly diagnosed multiple myeloma

On December 8, 2024 Johnson & Johnson (NYSE:JNJ) reported new frontline data featuring TECVAYLI (teclistamab-cqyv) from two investigational studies in patients with newly diagnosed multiple myeloma (NDMM) in induction and maintenance settings (Press release, Johnson & Johnson, DEC 8, 2024, View Source [SID1234648883]). The MajesTEC-5 (Abstract #493) and MajesTEC-4 (Abstract #494) studies establish the potential of TECVAYLI for use in newly diagnosed patients, with promising efficacy and a tolerable safety profile. These data were highlighted as oral presentations at the 2024 American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting.1,2

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Forty-nine patients with transplant-eligible NDMM were treated with TECVAYLI in combination with DARZALEX FASPRO (daratumumab and hyaluronidase-fihj), lenalidomide and dexamethasone (Tec-DRd) or DARZALEX FASPRO, bortezomib, lenalidomide and dexamethasone (Tec-DVRd) as induction therapy in the MajesTEC-5 study.1 All patients who were evaluated for MRD negativity after cycle 3 of induction therapy achieved MRD negativity (10-5) and maintained through cycle 6.1

"These data from the MajesTEC-5 study build on the growing body of evidence of TECVAYLI combinations that support the potential combinability of TECVAYLI with other effective therapies, demonstrating high rates of MRD-negative responses for evaluable patients with newly diagnosed multiple myeloma," said Rachel Kobos, M.D., Vice President, Oncology Research & Development, Johnson & Johnson Innovative Medicine. "At Johnson & Johnson, our deep expertise and understanding of multiple myeloma has shaped the regimens we’re developing, including our bispecific antibodies in new combinations, and we’re committed to exploring the full potential of our therapies to improve outcomes for patients."

The safety profiles were manageable and consistent with individual safety profiles.1 No treatment-emergent adverse events (TEAEs) led to study treatment discontinuation or death; cytokine release syndrome (CRS; Grade 1 or 2) occurred in 65 percent of patients.1 No patients experienced immune effector cell-associated neurotoxicity syndrome (ICANS).1 Grade 3/4 TEAEs included lymphopenia (43 percent), neutropenia (57 percent) and infections (35 percent).1

"There remains opportunity to achieve even deeper and more sustained outcomes for a broader patient population in the frontline setting," said Marc S. Raab, M.D., Heidelberg University Hospital, Germany.* "These data reinforce the potential of TECVAYLI when used in earlier lines and show that TECVAYLI can be leveraged to optimize existing standard regimens in combination."

Results from the safety run-in of the Phase 3 MajesTEC-4 study highlighted the potential of TECVAYLI to be administered as a maintenance therapy following autologous stem cell transplant (ASCT).2 MajesTEC-4 is the first study to present data on a B-cell maturation antigen (BCMA) bispecific as monotherapy or combination therapy after ASCT.2

Low rates of non-hematologic Grade 3/4 TEAEs and discontinuation of treatment due to all TEAEs (5.3 percent) were observed. CRS events were all Grade 1/2, mostly occurring during step-up dosing, and ICANS was not observed. Neutropenia and infections were the most common Grade 3/4 TEAEs.2 Grade 3/4 neutropenia at 6 months showed a decreased trend in cohorts 2 and 3 with less frequent TECVAYLI dosing (cohort 1: 94 percent, cohort 2: 63 percent, cohort 3: 47 percent).2 A similar trend was observed for all-grade infections (cohort 1: 94 percent; cohort 2: 78 percent; cohort 3: 77 percent).2 All evaluable patients in cohort 1 who underwent MRD assessment after 12 months of therapy were MRD negative, and 100 percent of evaluable patients assessed in cohorts 2 and 3 were also MRD negative at cycle 6.2

Further analysis of combination therapies will be evaluated in the Phase 3 MajesTEC-7 study, which is currently enrolling.

About MajesTEC-5 Study
MajesTEC-5 (NCT05695508) is an ongoing, Phase 2 study of teclistamab and talquetamab, evaluating the safety and efficacy of combination regimens in participants with newly diagnosed transplant eligible multiple myeloma.3

About MajesTEC-4 Study
MajesTEC-4 (NCT05243797) is an ongoing, multicenter, randomized, open-label, Phase 3 study of teclistamab in combination with lenalidomide and teclistamab alone versus lenalidomide alone in participants with newly diagnosed multiple myeloma as maintenance therapy following autologous stem cell transplantation.4

About MajesTEC-7 Study
MajesTEC-7 (NCT05552222) is a Phase 3 randomized study comparing teclistamab in combination with daratumumab SC and lenalidomide (Tec-DR) and talquetamab in combination with daratumumab SC and lenalidomide (Tal-DR) versus daratumumab SC, lenalidomide, and dexamethasone (DRd) in participants with newly diagnosed multiple myeloma who are either ineligible or not intended for autologous stem cell transplant as initial therapy.5

About TECVAYLI
TECVAYLI (teclistamab-cqyv) received approval from the U.S. FDA in October 2022 as an off-the-shelf (or ready-to-use) antibody that is administered as a subcutaneous treatment for adult patients with relapsed or refractory multiple myeloma (RRMM) who have received at least four prior lines of therapy, including a proteasome inhibitor, an immunomodulatory agent and an anti-CD38 antibody.6 The European Commission (EC) granted TECVAYLI conditional marketing authorization (CMA) in August 2022 as monotherapy for the treatment of adult patients with RRMM who have received at least three prior therapies, including a proteasome inhibitor, an immunomodulatory agent and an anti-CD38 antibody, and have demonstrated disease progression since the last therapy. In August 2023, the EC granted the approval of a Type II variation application for TECVAYLI, providing the option for a reduced dosing frequency of 1.5 mg/kg every two weeks in patients who have achieved a complete response (CR) or better for a minimum of six months. TECVAYLI is a first-in-class, bispecific T-cell engager antibody therapy that uses innovative science to activate the immune system by binding to the CD3 receptor expressed on the surface of T-cells and to the B-cell maturation antigen (BCMA) expressed on the surface of multiple myeloma cells and some healthy B-lineage cells. In February 2024, the U.S. FDA approved the supplemental Biologics License Application (sBLA) for TECVAYLI for a reduced dosing frequency of 1.5 mg/kg every two weeks (Q2W) in patients with relapsed or refractory multiple myeloma who have achieved and maintained a CR or better for a minimum of six months.

For more information, visit www.TECVAYLI.com.

About DARZALEX FASPRO and DARZALEX
DARZALEX FASPRO (daratumumab and hyaluronidase-fihj) received U.S. FDA approval in May 2020 and is approved for nine indications in multiple myeloma, four of which are for frontline treatment in newly diagnosed patients who are transplant eligible or ineligible. It is the only subcutaneous CD38-directed antibody approved to treat patients with MM. DARZALEX FASPRO is co-formulated with recombinant human hyaluronidase PH20, Halozyme’s ENHANZE drug delivery technology.

DARZALEX is the first CD38-directed antibody approved to treat multiple myeloma. DARZALEX-based regimens have been used in the treatment of more than 585,000 patients worldwide and more than 239,000 patients in the U.S. alone.

In August 2012, Janssen Biotech, Inc. and Genmab A/S entered a worldwide agreement, which granted Janssen an exclusive license to develop, manufacture and commercialize daratumumab.

For more information, visit View Source

About Multiple Myeloma
Multiple myeloma is an incurable blood cancer that affects a type of white blood cell called plasma cells, which are found in the bone marrow.7 In multiple myeloma, these plasma cells proliferate and spread rapidly and replace normal cells in the bone marrow with tumors.8 Multiple myeloma is the third most common blood cancer worldwide and remains an incurable disease.9 In 2024, it was estimated that more than 35,000 people will be diagnosed with multiple myeloma in the U.S. and more than 12,000 people would die from the disease.10 People living with multiple myeloma have a 5-year survival rate of 59.8 percent.11 While some people diagnosed with multiple myeloma initially have no symptoms, most patients are diagnosed due to symptoms that can include bone fracture or pain, low red blood cell counts, tiredness, high calcium levels and kidney problems or infections.12,13

TECVAYLI IMPORTANT SAFETY INFORMATION

WARNING: CYTOKINE RELEASE SYNDROME and NEUROLOGIC TOXICITY including IMMUNE EFFECTOR CELL-
ASSOCIATED NEUROTOXICITY SYNDROME

Cytokine release syndrome (CRS), including life-threatening or fatal reactions, can occur in patients receiving
TECVAYLI. Initiate treatment with TECVAYLI step-up dosing schedule to reduce risk of CRS. Withhold TECVAYLI
until CRS resolves or permanently discontinue based on severity.

Neurologic toxicity, including Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) and serious and life-
threatening reactions, can occur in patients receiving TECVAYLI. Monitor patients for signs or symptoms of neurologic
toxicity, including ICANS, during treatment. Withhold TECVAYLI until neurologic toxicity resolves or permanently
discontinue based on severity.

TECVAYLI is available only through a restricted program called the TECVAYLI and TALVEY Risk Evaluation and
Mitigation Strategy (REMS).

INDICATION AND USAGE

TECVAYLI (teclistamab-cqyv) is a bispecific B-cell maturation antigen (BCMA)-directed CD3 T-cell engager indicated for the treatment of adult patients with relapsed or refractory multiple myeloma who have received at least four prior lines of therapy, including a proteasome inhibitor, an immunomodulatory agent and an anti-CD38 monoclonal antibody.

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 confirmatory trial(s).

WARNINGS AND PRECAUTIONS

Cytokine Release Syndrome – TECVAYLI can cause cytokine release syndrome (CRS), including life-threatening or fatal reactions. In the clinical trial, CRS occurred in 72% of patients who received TECVAYLI at the recommended dose, with Grade 1 CRS occurring in 50% of patients, Grade 2 in 21%, and Grade 3 in 0.6%. Recurrent CRS occurred in 33% of patients. Most patients experienced CRS following step-up dose 1 (42%), step-up dose 2 (35%), or the initial treatment dose (24%). Less than 3% of patients developed first occurrence of CRS following subsequent doses of TECVAYLI. The median time to onset of CRS was 2 (range: 1 to 6) days after the most recent dose with a median duration of 2 (range: 1 to 9) days. Clinical signs and symptoms of CRS included, but were not limited to, fever, hypoxia, chills, hypotension, sinus tachycardia, headache, and elevated liver enzymes (aspartate aminotransferase and alanine aminotransferase elevation).

Initiate therapy according to TECVAYLI step-up dosing schedule to reduce risk of CRS. Administer pretreatment medications to reduce risk of CRS and monitor patients following administration of TECVAYLI accordingly. At the first sign of CRS, immediately evaluate patient for hospitalization. Administer supportive care based on severity and consider further management per current practice guidelines. Withhold or permanently discontinue TECVAYLI based on severity.

TECVAYLI is available only through a restricted program under a REMS.

Neurologic Toxicity including ICANS – TECVAYLI can cause serious or life-threatening neurologic toxicity, including Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS).

In the clinical trial, neurologic toxicity occurred in 57% of patients who received TECVAYLI at the recommended dose, with Grade 3 or 4 neurologic toxicity occurring in 2.4% of patients. The most frequent neurologic toxicities were headache (25%), motor dysfunction (16%), sensory neuropathy (15%), and encephalopathy (13%). With longer follow-up, Grade 4 seizure and fatal Guillain-Barré syndrome (one patient each) occurred in patients who received TECVAYLI.

In the clinical trial, ICANS was reported in 6% of patients who received TECVAYLI at the recommended dose. Recurrent ICANS occurred in 1.8% of patients. Most patients experienced ICANS following step-up dose 1 (1.2%), step-up dose 2 (0.6%), or the initial treatment dose (1.8%). Less than 3% of patients developed first occurrence of ICANS following subsequent doses of TECVAYLI. The median time to onset of ICANS was 4 (range: 2 to 8) days after the most recent dose with a median duration of 3 (range: 1 to 20) days. The most frequent clinical manifestations of ICANS reported were confusional state and dysgraphia. The onset of ICANS can be concurrent with CRS, following resolution of CRS, or in the absence of CRS.

Monitor patients for signs and symptoms of neurologic toxicity during treatment. At the first sign of neurologic toxicity, including ICANS, immediately evaluate patient and provide supportive therapy based on severity. Withhold or permanently discontinue TECVAYLI based on severity per recommendations and consider further management per current practice guidelines.

Due to the potential for neurologic toxicity, patients are at risk of depressed level of consciousness. Advise patients to refrain from driving or operating heavy or potentially dangerous machinery during and for 48 hours after completion of TECVAYLI step-up dosing schedule and in the event of new onset of any neurologic toxicity symptoms until neurologic toxicity resolves.

TECVAYLI is available only through a restricted program under a REMS.

TECVAYLI and TALVEY REMS – TECVAYLI is available only through a restricted program under a REMS called the TECVAYLI and TALVEY REMS because of the risks of CRS and neurologic toxicity, including ICANS.

Hepatotoxicity – TECVAYLI can cause hepatotoxicity, including fatalities. In patients who received TECVAYLI at the recommended dose in the clinical trial, there was one fatal case of hepatic failure. Elevated aspartate aminotransferase (AST) occurred in 34% of patients, with Grade 3 or 4 elevations in 1.2%. Elevated alanine aminotransferase (ALT) occurred in 28% of patients, with Grade 3 or 4 elevations in 1.8%. Elevated total bilirubin occurred in 6% of patients with Grade 3 or 4 elevations in 0.6%. Liver enzyme elevation can occur with or without concurrent CRS.

Monitor liver enzymes and bilirubin at baseline and during treatment as clinically indicated. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity.

Infections – TECVAYLI can cause severe, life-threatening, or fatal infections. In patients who received TECVAYLI at the recommended dose in the clinical trial, serious infections, including opportunistic infections, occurred in 30% of patients, with Grade 3 or 4 infections in 35%, and fatal infections in 4.2%. Monitor patients for signs and symptoms of infection prior to and during treatment with TECVAYLI and treat appropriately. Administer prophylactic antimicrobials according to guidelines. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity.

Monitor immunoglobulin levels during treatment with TECVAYLI and treat according to guidelines, including infection precautions and antibiotic or antiviral prophylaxis.

Neutropenia – TECVAYLI can cause neutropenia and febrile neutropenia. In patients who received TECVAYLI at the recommended dose in the clinical trial, decreased neutrophils occurred in 84% of patients, with Grade 3 or 4 decreased neutrophils in 56%. Febrile neutropenia occurred in 3% of patients.

Monitor complete blood cell counts at baseline and periodically during treatment and provide supportive care per local institutional guidelines. Monitor patients with neutropenia for signs of infection. Withhold TECVAYLI based on severity.

Hypersensitivity and Other Administration Reactions – TECVAYLI can cause both systemic administration-related and local injection-site reactions. Systemic Reactions – In patients who received TECVAYLI at the recommended dose in the clinical trial, 1.2% of patients experienced systemic-administration reactions, which included Grade 1 recurrent pyrexia and Grade 1 swollen tongue. Local Reactions – In patients who received TECVAYLI at the recommended dose in the clinical trial, injection-site reactions occurred in 35% of patients, with Grade 1 injection-site reactions in 30% and Grade 2 in 4.8%. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity.

Embryo-Fetal Toxicity – Based on its mechanism of action, TECVAYLI may cause fetal harm when administered to a pregnant woman. Advise pregnant women of the potential risk to the fetus. Advise females of reproductive potential to use effective contraception during treatment with TECVAYLI and for 5 months after the last dose.

ADVERSE REACTIONS

The most common adverse reactions (≥20%) were pyrexia, CRS, musculoskeletal pain, injection site reaction, fatigue, upper respiratory tract infection, nausea, headache, pneumonia, and diarrhea. The most common Grade 3 to 4 laboratory abnormalities (≥20%) were decreased lymphocytes, decreased neutrophils, decreased white blood cells, decreased hemoglobin, and decreased platelets.

Please read full Prescribing Information, including Boxed WARNING, for TECVAYLI.

DARZALEX FASPRO INDICATIONS AND IMPORTANT SAFETY INFORMATION 

INDICATIONS
DARZALEX FASPRO (daratumumab and hyaluronidase-fihj) is indicated for the treatment of adult patients with multiple myeloma:

In combination with bortezomib, lenalidomide, and dexamethasone for induction and consolidation in newly diagnosed patients who are eligible for autologous stem cell transplant
In combination with bortezomib, melphalan, and prednisone in newly diagnosed patients who are ineligible for autologous stem cell transplant
In combination with lenalidomide and dexamethasone in newly diagnosed patients who are ineligible for autologous stem cell transplant and in patients with relapsed or refractory multiple myeloma who have received at least one prior therapy
In combination with bortezomib, thalidomide, and dexamethasone in newly diagnosed patients who are eligible for autologous stem cell transplant
In combination with pomalidomide and dexamethasone in patients who have received at least one prior line of therapy including lenalidomide and a proteasome inhibitor (PI)
In combination with carfilzomib and dexamethasone in patients with relapsed or refractory multiple myeloma who have received one to three prior lines of therapy
In combination with bortezomib and dexamethasone in patients who have received at least one prior therapy
As monotherapy in patients who have received at least three prior lines of therapy including a PI and an immunomodulatory agent or who are double refractory to a PI and an immunomodulatory agent
IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS 
DARZALEX FASPRO is contraindicated in patients with a history of severe hypersensitivity to daratumumab, hyaluronidase, or any of the components of the formulation.

WARNINGS AND PRECAUTIONS  

Hypersensitivity and Other Administration Reactions  
Both systemic administration-related reactions, including severe or life-threatening reactions, and local injection-site reactions can occur with DARZALEX FASPRO. Fatal reactions have been reported with daratumumab-containing products, including DARZALEX FASPRO.

Systemic Reactions  
In a pooled safety population of 1249 patients with multiple myeloma (N=1056) or light chain (AL) amyloidosis (N=193) who received DARZALEX FASPRO as monotherapy or in combination, 7% of patients experienced a systemic administration-related reaction (Grade 2: 3.2%, Grade 3: 0.7%, Grade 4: 0.1%). Systemic administration-related reactions occurred in 7% of patients with the first injection, 0.2% with the second injection, and cumulatively 1% with subsequent injections. The median time to onset was 2.9 hours (range: 5 minutes to 3.5 days). Of the 165 systemic administration-related reactions that occurred in 93 patients, 144 (87%) occurred on the day of DARZALEX FASPRO administration. Delayed systemic administration-related reactions have occurred in 1% of the patients.

Severe reactions included hypoxia, dyspnea, hypertension, tachycardia, and ocular adverse reactions, including choroidal effusion, acute myopia, and acute angle closure glaucoma. Other signs and symptoms of systemic administration-related reactions may include respiratory symptoms, such as bronchospasm, nasal congestion, cough, throat irritation, allergic rhinitis, and wheezing, as well as anaphylactic reaction, pyrexia, chest pain, pruritus, chills, vomiting, nausea, hypotension, and blurred vision.  

Pre-medicate patients with histamine-1 receptor antagonist, acetaminophen, and corticosteroids. Monitor patients for systemic administration-related reactions, especially following the first and second injections. For anaphylactic reaction or life-threatening (Grade 4) administration-related reactions, immediately and permanently discontinue DARZALEX FASPRO. Consider administering corticosteroids and other medications after the administration of DARZALEX FASPRO depending on dosing regimen and medical history to minimize the risk of delayed (defined as occurring the day after administration) systemic administration-related reactions.  

Ocular adverse reactions, including acute myopia and narrowing of the anterior chamber angle due to ciliochoroidal effusions with potential for increased intraocular pressure or glaucoma, have occurred with daratumumab-containing products. If ocular symptoms occur, interrupt DARZALEX FASPRO and seek immediate ophthalmologic evaluation prior to restarting DARZALEX FASPRO.  

Local Reactions  
In this pooled safety population, injection-site reactions occurred in 7% of patients, including Grade 2 reactions in 0.8%. The most frequent (>1%) injection-site reaction was injection-site erythema. These local reactions occurred a median of 5 minutes (range: 0 minutes to 6.5 days) after starting administration of DARZALEX FASPRO. Monitor for local reactions and consider symptomatic management.  

Neutropenia  
Daratumumab may increase neutropenia induced by background therapy. Monitor complete blood cell counts periodically during treatment according to manufacturer’s prescribing information for background therapies. Monitor patients with neutropenia for signs of infection. Consider withholding DARZALEX FASPRO until recovery of neutrophils. In lower body weight patients receiving DARZALEX FASPRO, higher rates of Grade 3-4 neutropenia were observed.  

Thrombocytopenia  
Daratumumab may increase thrombocytopenia induced by background therapy. Monitor complete blood cell counts periodically during treatment according to manufacturer’s prescribing information for background therapies. Consider withholding DARZALEX FASPRO until recovery of platelets.  

Embryo-Fetal Toxicity  
Based on the mechanism of action, DARZALEX FASPRO can cause fetal harm when administered to a pregnant woman. DARZALEX FASPRO may cause depletion of fetal immune cells and decreased bone density. Advise pregnant women of the potential risk to a fetus. Advise females with reproductive potential to use effective contraception during treatment with DARZALEX FASPRO and for 3 months after the last dose.  

The combination of DARZALEX FASPRO with lenalidomide, thalidomide, or pomalidomide is contraindicated in pregnant women because lenalidomide, thalidomide, and pomalidomide may cause birth defects and death of the unborn child. Refer to the lenalidomide, thalidomide, or pomalidomide prescribing information on use during pregnancy.  

Interference With Serological Testing  
Daratumumab binds to CD38 on red blood cells (RBCs) and results in a positive indirect antiglobulin test (indirect Coombs test). Daratumumab-mediated positive indirect antiglobulin test may persist for up to 6 months after the last daratumumab administration. Daratumumab bound to RBCs masks detection of antibodies to minor antigens in the patient’s serum. The determination of a patient’s ABO and Rh blood type are not impacted.  

Notify blood transfusion centers of this interference with serological testing and inform blood banks that a patient has received DARZALEX FASPRO. Type and screen patients prior to starting DARZALEX FASPRO.  

Interference With Determination of Complete Response  
Daratumumab is a human immunoglobulin G (IgG) kappa monoclonal antibody that can be detected on both the serum protein electrophoresis (SPE) and immunofixation (IFE) assays used for the clinical monitoring of endogenous M-protein. This interference can impact the determination of complete response and of disease progression in some DARZALEX FASPRO-treated patients with IgG kappa myeloma protein.  

ADVERSE REACTIONS  

In multiple myeloma, the most common adverse reaction (≥20%) with DARZALEX FASPRO monotherapy is upper respiratory tract infection. The most common adverse reactions with combination therapy (≥20% for any combination) include fatigue, nausea, diarrhea, dyspnea, insomnia, headache, pyrexia, cough, muscle spasms, back pain, vomiting, hypertension, upper respiratory tract infection, peripheral sensory neuropathy, constipation, pneumonia, and peripheral edema.  

The most common hematology laboratory abnormalities (≥40%) with DARZALEX FASPRO are decreased leukocytes, decreased lymphocytes, decreased neutrophils, decreased platelets, and decreased hemoglobin.  

Please click here to see the full Prescribing Information for DARZALEX FASPRO.

Arcellx Announces New Positive Data for Its iMMagine-1 Study in Patients With Relapsed or Refractory Multiple Myeloma to be Presented During an Oral Presentation at the 66th ASH Annual Meeting and Exposition

On December 08, 2024 Arcellx, Inc. (NASDAQ: ACLX), a biotechnology company reimagining cell therapy through the development of innovative immunotherapies for patients with cancer and other incurable diseases, reported new positive data from its Phase 2 pivotal iMMagine-1 study of anitocabtagene autoleucel (anito-cel), in patients with relapsed or refractory multiple myeloma (RRMM) (Press release, Arcellx, DEC 8, 2024, View Source [SID1234648884]). These data will be presented during an oral presentation at the 66th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting and Exposition on Monday, December 9, 2024 at 5:30 p.m. PT. Anito-cel is partnered with Kite, a Gilead Company. Additional presentations during ASH (Free ASH Whitepaper) are also noted below.

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The Phase 2 iMMagine-1 data are from an October 31, 2024 data cutoff date, with a median follow-up of 9.5 months for the efficacy evaluable population. At the time of the data cut, 86 patients were evaluable for efficacy based on a follow-up of at least two months after treatment with anito-cel, and 98 patients were evaluable for safety based on a follow-up of at least one month after treatment with anito-cel. All patients received a single infusion of anito-cel (target dose of 115×106 CAR+ viable T cells). In the safety evaluable population, 85 of 98 patients (87%) were triple refractory, and 41 of 98 patients (42%) were penta refractory. Patients received a median of four prior lines of therapy, with 45 of 98 patients (46%) having received three prior lines.

Overall response rate (ORR) was 97% (83/86) with a complete response/stringent complete response (CR/sCR) rate of 62% (53/86) and a very good partial response or higher (>VGPR) rate of 81% (70/86), per International Myeloma Working Group (IMWG) criteria as investigator-assessed. Of those evaluable for minimal residual disease (MRD) testing, 93.1% (54/58) achieved MRD negativity at a minimum of 10-5 sensitivity. Median progression-free survival (mPFS) and overall survival (OS) were not reached; 6-month PFS and OS rates were 93.3% and 96.5%, respectively, and 12-month PFS and OS rates were 78.5% and 96.5%, respectively.

No delayed or non-ICANS neurotoxicities, including no Parkinsonism, no cranial nerve palsies, and no Guillain-Barré syndrome, have been observed to date in more than 150 patients dosed with anito-cel. Of the safety evaluable population, 86% (84/98) had Grade ≤1 cytokine release syndrome (CRS), including 17% of patients with no CRS. Among patients experiencing CRS, the median onset was four days (range: 1-17 days). Eight percent of patients (8/98) were treated as outpatient. Ninety-one percent (89/98) of patients had no ICANS. Any Grade ICANS was observed in 9 patients (9%; Gr3 1%), with all cases resolved without sequelae. Three deaths occurred due to treatment-emergent adverse events (TEAEs) (related or unrelated to anito-cel: retroperitoneal hemorrhage, CRS, and fungal infection). No additional treatment or therapy-related deaths or Grade ≥3 CRS or ICANs events have occurred to date. Cytopenias were the most common Grade ≥3 TEAEs; 53 patients (54%) had Grade ≥3 neutropenia, 20 (20%) had Grade ≥3 thrombocytopenia, and 22 (22%) had Grade ≥3 anemia.

Conclusions

Preliminary results from the Phase 2 iMMagine-1 study demonstrate deep and durable responses with a predictable and manageable safety profile in a high-risk fourth-line or higher (4L+) RRMM population, including triple- and penta-class refractory disease. Notably, no delayed or non-ICANS neurotoxicities, including no Parkinsonism, no cranial nerve palsies, and no Guillain-Barré syndrome, have been observed with anito-cel to date.

Ciara Freeman, M.D., Ph.D., Assistant Member, Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center said, "The data from the iMMagine-1 study demonstrate that this is a highly active product with impressive depth of responses achieved in patients with relapsed or refractory multiple myeloma. As a physician who treats many patients both inpatient and in the outpatient setting, the emerging safety profile of anito-cel is encouraging, in particular the absence of any delayed neurotoxicities reported to date. We are excited to begin enrolling patients in the iMMagine-3 study and in the near future having anito-cel as an approved treatment option."

Arcellx’s Chairman and Chief Executive Officer, Rami Elghandour, said, "It’s exciting to reach this momentous milestone in our pivotal study and present these compelling data. These data, along with the data from our Phase 1 study, which demonstrated a 30.2-month median PFS and zero cases of delayed neurotoxicity or other non-ICANS neurotoxicity with all patients having more than two years of follow-up, continue to support our conviction that anito-cel has the potential to be a best-in-class treatment option for patients with RRMM. Additionally, with iMMagine-3 underway in earlier lines in a patient population representing an unmet clinical need, we expect to further position anito-cel as a differentiated CAR-T treatment option for RRMM. Separately, this year is Arcellx’s 10th anniversary! I’m grateful for the incredible people who make up the fabric of Arcellx and have poured themselves into developing this life-saving therapy for the patients most in need. And I’m proud of how we’ve done it, leaning into our diversity as a cornerstone of our culture, which underpins our success. I especially appreciate the partnership, collaboration, and trust of the Phase 1 and iMMagine-1 clinicians who helped enroll patients in these studies and allowed us to demonstrate the potential benefit of anito-cel. I’m also grateful to those who believed in us, our founding investors and scientists, our investors who helped us go public nearly three years ago in a challenging market, and those who have joined us along the way. To our colleagues at Kite, we thank you for your partnership. To everyone who’s been part of this incredible journey, thank you! We’re just getting started!"

ASH Presentation Details

Phase 2 Registrational Study of Anitocabtagene Autoleucel for the Treatment of Patients with Relapsed and/or Refractory Multiple Myeloma: Preliminary Results From the iMMagine-1 Trial (abstract #1031)

Speaker: Ciara Freeman, M.D., Ph.D., H. Lee Moffitt Cancer Center
Session Name: 655. Multiple Myeloma: Cellular Therapies: Unleashing Cell Therapies Against Myeloma
Session Date: Monday, December 9, 2024
Session Time: 4:30 p.m. – 6:00 p.m. PT
Presentation Time: 5:30 p.m. PT
Location: Marriott Marquis San Diego Marina, Pacific Ballroom Salons 24-26
Publication Number: 1031
Submission ID: 198499

Phase 1 Study of Anitocabtagene Autoleucel for the Treatment of Patients With Relapsed and/or Refractory Multiple Myeloma (RRMM) (abstract #4825)

Speaker: Michael R. Bishop, M.D., The University of Chicago
Session Name: 704. Cellular Immunotherapies: Early Phase Clinical Trials and Toxicities
Session Date: Monday, December 9, 2024
Presentation Time: 6:00 p.m. – 8:00 p.m. PT
Location: San Diego Convention Center, Halls G-H
Publication Number: 4825
Submission ID: 201080

Health Related Quality of Life (HRQoL) in Relapsed/Refractory Multiple Myeloma (RRMM): A Systematic Literature Review (SLR) and Meta-Analysis (abstract #4721)

Speaker: Rahul Banerjee, M.D., Fred Hutchinson Cancer Center
Session Name: 653. Multiple Myeloma: Clinical and Epidemiological: Poster III
Session Date: Monday, December 9, 2024
Presentation Time: 6:00 p.m. – 8:00 p.m. PT
Location: San Diego Convention Center, Halls G-H

Treatment Patterns and Outcomes in Triple-Class Exposed Patients with Relapsed and Refractory Multiple Myeloma: Findings from the Flatiron Database (abstract #6962)

This abstract will be published in a supplemental issue of Blood in November 2024.

Webcast Event (New Start Time):

Arcellx will host a live webcast event with an expert panel of clinicians to discuss the clinical results on Monday, December 9, 2024 at 8 p.m. PT. The event will be accessible from the Investors section of the Company’s website at ir.arcellx.com. A webcast replay will be archived and available for 30 days following the event.

About Multiple Myeloma

Multiple Myeloma (MM) is a type of hematological cancer in which diseased plasma cells proliferate and accumulate in the bone marrow, crowding out healthy blood cells and causing bone lesions, loss of bone density, and bone fractures. These abnormal plasma cells also produce excessive quantities of an abnormal immunoglobulin fragment, called a myeloma protein (M protein), causing kidney damage and impairing the patient’s immune function. Multiple myeloma is the third most common hematological malignancy in the United States and Europe, representing approximately 10% of all hematological cancer cases and 20% of deaths due to hematological malignancies. The median age of patients at diagnosis is 69 years with one-third of patients diagnosed at an age of at least 75 years. Because MM tends to afflict patients at an advanced stage of life, patients often have multiple co-morbidities and toxicities that can quickly escalate and become life-endangering.

About Anitocabtagene Autoleucel (anito-cel)

Anitocabtagene autoleucel (anito-cel, previously ddBCMA) is the first BCMA-directed CAR T-cell therapy to be investigated in multiple myeloma that utilizes Arcellx’s novel and compact binder known as the D-Domain. The small, stable D-Domain binder enables high CAR expression without tonic signaling and is designed to quickly release from the BCMA target. This combination may allow for the effective elimination of multiple myeloma cells without severe immunotoxicity. Anito-cel has been granted Fast Track, Orphan Drug, and Regenerative Medicine Advanced Therapy Designations by the U.S. Food and Drug Administration.

About iMMagine-3, A Global Phase 3 Randomized Controlled Clinical Study

iMMagine-3 is a global Phase 3 randomized controlled study designed to compare the efficacy and safety of anitocabtagene autoleucel (anito-cel) with standard of care in patients with relapsed and/or refractory multiple myeloma (RRMM) who have received one to three prior lines of therapy, including an immunomodulatory drug (lMiD) and an anti-CD38 monoclonal antibody.

iMMagine-3 will enroll approximately 450 adult patients. Prior to randomization, investigator’s choice of standard of care (SOC) regimens include: pomalidomide, bortezomib, and dexamethasone (PVd); daratumumab, pomalidomide, and dexamethasone (DPd); carfilzomib, daratumumab, and dexamethasone (KDd); or carfilzomib and dexamethasone (Kd). Patients in the anito-cel arm will undergo leukapheresis and optional bridging therapy (with the SOC regimen selected by the investigator prior to randomization) followed by lymphodepleting chemotherapy (fludarabine 30 mg/m2/d and cyclophosphamide 300 mg/m2/d for 3 days) and one infusion of anito-cel (115×106 CAR+ T cells) on Day 1.

The primary endpoint is progression-free survival (PFS) per blinded independent review according to the 2016 IMWG uniform response criteria for multiple myeloma (MM) with the hypothesis that anito-cel will prolong PFS compared to SOC. Key secondary endpoints include complete response rate (CR/sCR), minimal residual disease negativity, overall survival, and safety.

The iMMagine-3 study was initiated in the second half of 2024 at approximately 130 study sites across North America, Europe, and the rest of the world.

About Arcellx and Kite Collaboration

Arcellx and Kite, a Gilead Company, formed a global strategic collaboration and license agreement to co-develop and co-commercialize anito-cel for patients with relapsed and/or refractory multiple myeloma, (RRMM). Anito-cel is currently being developed in a Phase 2 registrational pivotal study and a global Phase 3 randomized controlled study for RRMM. Kite and Arcellx will jointly commercialize the anito-cel asset in the United States, and Kite will commercialize the product outside the United States.

Investigational Epcoritamab (DuoBody® CD3xCD20) Monotherapy Achieves High Overall and Complete Response Rates in Clinical Trial of Patients With Relapsed or Refractory (R/R) Chronic Lymphocytic Leukemia (CLL) in Preliminary Analysis

On December 8, 2024 Genmab (Nasdaq: GMAB) reported results from the Phase 1b/2 EPCORE CLL-1 clinical trial evaluating epcoritamab (Abstract #883), a T-cell engaging bispecific antibody administered subcutaneously, demonstrated an overall response rate (ORR) of 61 percent and a complete response (CR) rate of 39 percent in difficult-to-treat adult patients with relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL) treated with epcoritamab monotherapy (Press release, Genmab, DEC 8, 2024, View Source [SID1234648866]). These results, from the monotherapy expansion (EXP) cohort (n=23) of the trial, along with the first safety data from the optimization (OPT) cohort, were presented at the 66th Annual Meeting and Exposition of the American Society of Hematology (ASH) (Free ASH Whitepaper), during the ASH (Free ASH Whitepaper) Annual Meeting Press Program. The data will be presented during an oral session on December 9, 2024.

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In the EXP cohort, the median time to response was two (2.0) months and the median time to CR was 5.6 months. Among all patients in the cohort, median progression-free survival (PFS) was 12.8 months and median overall survival (OS) was not reached (median follow-up was 22.8 months). An estimated 65 percent of patients were alive at 15 months. Among 12 responders evaluable for minimal residual disease (MRD) by next-generation sequencing in peripheral blood, nine patients (75 percent) had undetectable MRD.

The most frequent non-hematologic treatment-emergent adverse events (TEAEs) in the EXP cohort were cytokine release syndrome (CRS; 96 percent), diarrhea (48 percent), peripheral edema (48 percent), fatigue (43 percent), and injection-site reaction (43 percent). Cytopenias were common (anemia, 65 percent; thrombocytopenia, 65 percent; neutropenia, 48 percent); however, most patients had baseline anemia and thrombocytopenia, suggesting that these events were largely disease-related. Three cases of immune effector cell-associated neurotoxicity syndrome (ICANS) were reported (one Grade 1; two Grade 2), and there was one clinical tumor lysis syndrome (CTLS) case (Grade 2). These cases did not lead to treatment discontinuation. Four fatal TEAEs occurred – two cases of pneumonia, one case of sepsis and one case of squamous cell carcinoma of the skin.

The EXP cohort followed a 2-step step-up dose regimen, and CRS was manageable and primarily low grade (9 percent Grade 1, 70 percent Grade 2, 17 percent Grade 3). In the first data from the separate OPT cohort, which followed a 3-step step-up dose regimen, CRS severity was substantially reduced with only low-grade events (71 percent Grade 1, 12 percent Grade 2). In both cohorts, CRS events primarily occurred following the first full dose, and none led to treatment discontinuation. No ICANS or CTLS cases were reported in the OPT cohort.

"These EPCORE CLL-1 data are encouraging, especially as the majority of patients were heavily pre-treated with at least four lines of therapy," said Alexey Danilov, MD, PhD, Marianne and Gerhard Pinkus, Professor and Director of Early Clinical Therapeutics and Associate Director of the Toni Stephenson Lymphoma Center, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope. "Despite progress in treating chronic lymphocytic leukemia, there remains a tremendous need for additional therapeutic options for high-risk patients whose disease has progressed following standard chemoimmunotherapy and targeted therapies."

Additional data from the EXP cohort showed high response rates in patients with high-risk factors treated with epcoritamab, including TP53 aberrations, IGHV-unmutated disease and double-exposed disease – prognostic markers that are associated with disease progression and decreased survival.i,ii,iii In patients with TP53 aberrations (n=15), the ORR was 67 percent with a CR of 33 percent. Among patients with IGHV-unmutated disease (n=16), the ORR was 63 percent, and the CR was 44 percent. In double-refractory patients, the ORR was 53 percent, and the CR was 37 percent.

All patients in the trial had prior chemoimmunotherapy, and most patients had previously received targeted therapies such as BTK and BCL2 inhibitors (double-exposed) and had high-risk disease characteristics.

"Chronic lymphocytic leukemia is incurable, and patients often need a variety of treatments throughout their lifetime, especially if their disease has high-risk prognostic factors, has relapsed or has become refractory to the current standard-of-care, including targeted therapies," said Dr. Judith Klimovsky, Executive Vice President & Chief Development Officer, Genmab. "These early data show the potential therapeutic applicability of epcoritamab in relapsed or refractory chronic lymphocytic leukemia, and further reinforce the potential of epcoritamab as a core therapy for the treatment of B-cell malignancies."

Use of epcoritamab in CLL is not approved in the U.S. or in the EU or in any other territory. The safety and efficacy of epcoritamab for use in CLL have not been established.

About Chronic Lymphocytic Leukemia (CLL)
Chronic lymphocytic leukemia (CLL) is the most prevalent type of leukemia, affecting over 200,000 people in the United States alone.iv Chronic lymphocytic leukemia can be classified as either slow growing (indolent) or fast growing (aggressive).v CLL is incurable, and many patients will likely relapse and progress on frontline therapies.vi Most patients will experience consecutive episodes of disease progression and will require several lines of treatment in their lifetime.vii,viii

About the EPCORE CLL-1 Trial
EPCORE CLL-1 is a Phase 1b/2, open-label, multi-center trial to evaluate the safety and preliminary efficacy of epcoritamab as a monotherapy and in combination with standard of care agents in patients with difficult-to-treat relapsed/refractory (R/R) chronic lymphocytic leukemia (CLL), R/R small lymphocytic lymphoma (SLL) and Richter’s Syndrome (RS). The trial consists of two parts: a dose-escalation phase (Phase 1b) and an expansion phase (Phase 2). Patients with RS are only included in the expansion phase. The primary objective of Phase 1b is to determine the recommended Phase 2 dose and the maximum tolerated dose as well as establish the safety profile of epcoritamab monotherapy and epcoritamab plus venetoclax in participants with R/R CLL. The purpose of Phase 2 is to assess and evaluate the preliminary efficacy, safety and tolerability profiles of epcoritamab monotherapy and epcoritamab plus venetoclax for patients with R/R CLL and SLL. Additionally, epcoritamab monotherapy and combination therapy will be evaluated in patients with RS to assess their efficacy, safety and tolerability profiles. More information on this trial can be found at View Source (NCT: 04623541).

About Epcoritamab
Epcoritamab is an IgG1-bispecific antibody created using Genmab’s proprietary DuoBody technology and administered subcutaneously. Genmab’s DuoBody-CD3 technology is designed to direct cytotoxic T cells selectively to elicit an immune response toward target cell types. Epcoritamab is designed to simultaneously bind to CD3 on T cells and CD20 on B cells and induces T-cell-mediated killing of CD20+ cells.ix

Epcoritamab (approved under the brand name EPKINLY in the U.S. and Japan, and TEPKINLY in the EU) has received regulatory approval in certain lymphoma indications in several territories. Epcoritamab is being co-developed by Genmab and AbbVie as part of the companies’ oncology collaboration. The companies will share commercial responsibilities in the U.S. and Japan, with AbbVie responsible for further global commercialization. Both companies will pursue additional international regulatory approvals for the investigational R/R FL indication and additional approvals for the R/R DLBCL indication.

Genmab and AbbVie continue to evaluate the use of epcoritamab as a monotherapy, and in combination, across lines of therapy in a range of hematologic malignancies. This includes five ongoing Phase 3, open-label, randomized trials including a trial evaluating epcoritamab as a monotherapy in patients with R/R DLBCL compared to investigator’s choice chemotherapy (NCT04628494), a trial evaluating epcoritamab in combination with R-CHOP in adult patients with newly diagnosed DLBCL (NCT05578976), a trial evaluating epcoritamab in combination with rituximab and lenalidomide (R2) in patients with R/R FL (NCT05409066), a trial evaluating epcoritamab in combination with rituximab and lenalidomide (R2) compared to chemoimmunotherapy in patients with previously untreated FL (NCT06191744), and a trial evaluating epcoritamab in combination with lenalidomide compared to chemotherapy infusion in patients with R/R DLBCL (NCT06508658). The safety and efficacy of epcoritamab has not been established for these investigational uses. Please visit www.clinicaltrials.gov for more information.