On March 28, 2024 Bristol Myers Squibb (NYSE: BMY) reported that the pivotal Phase 3 KRYSTAL-12 study, evaluating KRAZATI (adagrasib) as a monotherapy in patients with pretreated locally advanced or metastatic non-small cell lung cancer (NSCLC) harboring a KRASG12C mutation, met the primary endpoint of progression-free survival (PFS) and the key secondary endpoint of overall response rate (ORR) as assessed by Blinded Independent Central Review (BICR) at final analysis for these endpoints (Press release, Bristol-Myers Squibb, MAR 28, 2024, View Source [SID1234641556]). The study remains ongoing to assess the additional key secondary endpoint of overall survival. Results of the confirmatory trial showed that KRAZATI demonstrated a statistically significant and clinically meaningful benefit in PFS and ORR compared to standard-of-care chemotherapy as a second-line or later treatment for these patients. KRAZATI had no new safety signals and the safety data was consistent with the known safety profile.

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"Today’s news is an important reinforcement of the power of a targeted therapy for patients with locally advanced or metastatic KRASG12C-mutated lung cancer. FDA approval of KRAZATI in the U.S. has allowed us to provide a new treatment option for these patients, and topline results of the KRYSTAL-12 confirmatory study will build greater trust in the medical and patient community," said Abderrahim Oukessou, M.D., vice president, global program lead, KRAZATI, Bristol Myers Squibb. "We are encouraged by the results from KRYSTAL-12 and look forward to helping more patients with KRASG12C-mutated lung cancer."

The company will complete a full evaluation of the available data and looks forward to sharing the results with the scientific community at an upcoming medical conference as well as discussing the results with health authorities.

The U.S. FDA granted accelerated approval for KRAZATI as a targeted treatment for patients with KRASG12C-mutated locally advanced or metastatic NSCLC who have received at least one prior systemic therapy in December 2022. In 2023, Medicines and Healthcare products Regulatory Agency (MHRA) granted conditional marketing authorization for KRAZATI as a targeted treatment option for adult patients with KRASG12C-mutated advanced NSCLC and disease progression after at least one prior systemic therapy followed by the European Commission (EC) in 2024.

In addition to KRASG12C-mutated NSCLC, KRAZATI and KRAZATI-based combinations have shown encouraging meaningful benefit in Phase 2 clinical trials across several tumors, including advanced colorectal cancer, pancreatic cancer and other solid tumors. In February, the U.S. FDA accepted for priority review the supplemental new drug application (sNDA) for KRAZATI in combination with cetuximab for the treatment of patients with previously treated KRASG12C-mutated locally advanced or metastatic colorectal cancer (CRC). The FDA assigned a Prescription Drug User Fee Act (PDUFA) goal date of June 21, 2024.

Bristol Myers Squibb thanks the patients and investigators involved in the KRYSTAL-12 clinical trial.

ABOUT KRAZATI (adagrasib)

KRAZATI (adagrasib) is highly selective and potent oral small-molecule inhibitor of KRASG12C that is optimized to sustain target inhibition, an attribute that could be important to treat KRASG12C-mutated cancers, as the KRAS protein regenerates every 24-48 hours. KRASG12C mutations act as oncogenic drivers and occur in approximately 14% of non-small cell lung cancer, 3-4% of colorectal cancer, and 1-2% of several other cancers.

In 2022, KRAZATI was granted accelerated approval for treatment of adult patients with KRASG12C-mutated locally advanced or metastatic NSCLC, as determined by an FDA-approved test, who have received at least one prior systemic therapy. This indication is approved under accelerated approval based on objective response rate (ORR) and duration of response (DOR). Continued approval for this indication may be contingent upon verification and description of a clinical benefit in a confirmatory trial(s).

In 2023, Medicines and Healthcare products Regulatory Agency (MHRA) granted conditional marketing authorization for KRAZATI as a targeted treatment option for adult patients with KRASG12C-mutated advanced non-small cell lung cancer and disease progression after at least one prior systemic therapy followed by the European Commission (EC) in 2024.

KRAZATI continues to be evaluated as monotherapy and in combination with other anti-cancer therapies in patients with advanced KRASG12C-mutated solid tumors, including non-small cell lung cancer and colorectal cancer.

In 2022, the FDA granted breakthrough therapy designation for KRAZATI in combination with cetuximab in patients with KRASG12C-mutated advanced colorectal cancer whose cancer has progressed following prior treatment with chemotherapy and an anti-VEGF therapy.

For Prescribing Information, visit KRAZATI.

About KRYSTAL-12

KRYSTAL-12 is an open-label, multicenter, randomized Phase 3 study evaluating KRAZATI compared to standard-of-care chemotherapy alone, in patients with KRASG12C-mutated non-small cell lung cancer. The primary endpoint of the study is PFS as assessed by BICR. Secondary endpoints included overall survival (OS), overall response rate (ORR), duration of response (DOR), and safety.

INDICATION

KRAZATI is indicated for the treatment of adult patients with KRASG12C-mutated locally advanced or metastatic non-small cell lung cancer, as determined by an FDA-approved test, who have received at least one prior systemic therapy.

This indication is approved under accelerated approval based on objective response rate (ORR) and duration of response (DOR). Continued approval for this indication may be contingent upon verification and description of a clinical benefit in a confirmatory trial(s).

IMPORTANT SAFETY INFORMATION

GASTROINTESTINAL ADVERSE REACTIONS

In the pooled safety population, serious gastrointestinal adverse reactions observed were gastrointestinal obstruction in 1.6%, including 1.4% grade 3 or 4, gastrointestinal bleeding in 0.5% of patients, including 0.5% grade 3, and colitis in 0.3%, including 0.3% grade 3. In addition, nausea, diarrhea, or vomiting occurred in 89% of 366 patients, including 9% grade 3. Nausea, diarrhea, or vomiting led to dosage interruption or dose reduction in 29% of patients and permanent discontinuation of KRAZATI in 0.3%
Monitor and manage patients using supportive care, including antidiarrheals, antiemetics, or fluid replacement, as indicated. Withhold, reduce the dose, or permanently discontinue KRAZATI based on severity
QTC INTERVAL PROLONGATION

KRAZATI can cause QTc interval prolongation, which can increase the risk for ventricular tachyarrhythmias (eg, torsades de pointes) or sudden death
In the pooled safety population, 6% of 366 patients with at least one post-baseline electrocardiogram (ECG) assessment had an average QTc ≥501 ms, and 11% of patients had an increase from baseline of QTc >60 msec. KRAZATI causes concentration-dependent increases in the QTc interval
Avoid concomitant use of KRAZATI with other products with a known potential to prolong the QTc interval. Avoid use of KRAZATI in patients with congenital long QT syndrome and in patients with concurrent QTc prolongation
Monitor ECGs and electrolytes prior to starting KRAZATI, during concomitant use, and as clinically indicated in patients with congestive heart failure, bradyarrhythmias, electrolyte abnormalities, and in patients who are taking medications that are known to prolong the QT interval. Withhold, reduce the dose, or permanently discontinue KRAZATI, depending on severity
HEPATOTOXICITY

KRAZATI can cause hepatotoxicity
In the pooled safety population, hepatotoxicity occurred in 37%, and 7% were grade 3 or 4. A total of 32% of patients who received KRAZATI had increased alanine aminotransferase (ALT)/increased aspartate aminotransferase (AST); 5% were grade 3 and 0.5% were grade 4. Increased ALT/AST leading to dose interruption or reduction occurred in 11% of patients. KRAZATI was discontinued due to increased ALT/AST in 0.5% of patients
Monitor liver laboratory tests (AST, ALT, alkaline phosphatase, and total bilirubin) prior to the start of KRAZATI, and monthly for 3 months or as clinically indicated, with more frequent testing in patients who develop transaminase elevations. Reduce the dose, withhold, or permanently discontinue KRAZATI based on severity
INTERSTITIAL LUNG DISEASE /PNEUMONITIS

KRAZATI can cause interstitial lung disease (ILD)/pneumonitis, which can be fatal. In the pooled safety population, ILD/pneumonitis occurred in 4.1% of patients, 1.4% were grade 3 or 4, and 1 case was fatal. The median time to first onset for ILD/pneumonitis was 12 weeks (range: 5 to 31 weeks). KRAZATI was discontinued due to ILD/pneumonitis in 0.8% of patients
Monitor patients for new or worsening respiratory symptoms indicative of ILD/pneumonitis (eg, dyspnea, cough, fever). Withhold KRAZATI in patients with suspected ILD/pneumonitis and permanently discontinue KRAZATI if no other potential causes of ILD/pneumonitis are identified
ADVERSE REACTIONS

The most common adverse reactions (≥25%) are nausea, diarrhea, vomiting, fatigue, musculoskeletal pain, hepatotoxicity, renal impairment, edema, dyspnea, decreased appetite
FEMALES AND MALES OF REPRODUCTIVE POTENTIAL

Infertility: Based on findings from animal studies, KRAZATI may impair fertility in females and males of reproductive potential
Please see U.S. Full Prescribing Information for KRAZATI.

On March 28, 2024 Atara Biotherapeutics, Inc. (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, reported financial results for the fourth quarter and full year 2023, recent business highlights, and key upcoming milestones for 2024 (Press release, Atara Biotherapeutics, MAR 28, 2024, View Source [SID1234641555]).

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"We are expanding Atara’s proven EBV T-cell platform into allogeneic CAR T therapy for both oncology and autoimmune disease," said Pascal Touchon, President and Chief Executive Officer of Atara. "This includes strong momentum for our lead CAR T program, ATA3219, which is positioned to deliver near-term clinical data for both non-Hodgkin’s lymphoma and lupus nephritis. We also are focused on submitting our BLA for tab-cel in the second quarter, the progress of which triggers financial milestones and sales royalty opportunities in our partnership with Pierre Fabre."

Tabelecleucel (tab-cel or EbvalloTM) for Post-Transplant Lymphoproliferative Disease (PTLD)

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Atara recently held a positive pre-BLA meeting with the U.S. Food and Drug Administration (FDA) that supports its plan to submit the tab-cel relapsed or refractory Epstein-Barr virus positive post-transplant lymphoproliferative disease (EBV+ PTLD) Biologics License Application (BLA) in Q2 2024
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Data from the pivotal Phase 3 ALLELE study of tab-cel were published in The Lancet Oncology and showed a significant 51.2% objective response rate (ORR) and 23.0-month median duration of response in relapsed or refractory EBV+ PTLD subjects. Tab-cel was well tolerated with no events of graft-versus-host disease related to tab-cel
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Positive new data presented at the 2023 ESMO (Free ESMO Whitepaper)-IO meeting from the actively enrolling, multicohort Phase 2 EBVision trial with a pooled analysis demonstrated a 77.8% ORR in 18 central nervous system (CNS) EBV+ PTLD subjects including front line EBV+ PTLD
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Atara and Pierre Fabre Laboratories closed the expanded global partnership in December 2023 for the development, manufacturing, and commercialization rights of tab-cel in the United States and all remaining markets
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Atara received approximately $27 million in cash upfront at the closing of the deal. Under the agreement, Atara has the potential to receive up to $640 million in additional payments and significant double-digit tiered royalties on net sales, including up to $100 million in potential regulatory milestones through BLA approval
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Atara expects to receive $20 million of these regulatory milestones in April based on the recent positive pre-BLA meeting, another $20 million in connection with BLA acceptance, and the remaining $60 million in potential regulatory milestones in connection with BLA approval

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In addition, Pierre Fabre Laboratories will reimburse Atara for tab-cel regulatory and development costs through BLA approval, and purchase tab-cel inventory manufactured through BLA transfer

ATA3219: CD19 Program in Lupus Nephritis

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Investigational New Drug (IND) application cleared for the use of ATA3219 as a monotherapy for the treatment of systemic lupus erythematosus (SLE) with kidney involvement (lupus nephritis [LN])
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Atara plans to initiate a Phase 1 LN study in H2 2024 with initial clinical data anticipated H1 2025
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The Phase 1 open-label, dose-escalation study is designed to evaluate safety, preliminary efficacy, pharmacokinetics, and biomarkers of a single dose of ATA3219 administered to LN subjects refractory to one or more lines of treatment. Subjects will receive lymphodepletion (LD) treatment followed by ATA3219 at a dose of 40, 80, or 160 x 106 CAR+ T cells. Each dose level is designed to enroll 3-6 patients
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In vitro data demonstrated the CD19 antigen-specific functional activity of ATA3219 and CAR-mediated activity against B cells from SLE patients. ATA3219 led to near-complete CD19-specific B-cell depletion compared to controls. These preclinical data were submitted as part of a late-breaking abstract which was accepted for poster presentation at the upcoming International Society for Cell & Gene Therapy meeting held May 29-June 1, 2024

ATA3219: CD19 Program in Non-Hodgkin’s Lymphoma (NHL)

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Atara initiated enrollment of a multi-center, Phase 1 open-label, dose-escalation clinical trial of ATA3219 in NHL, including large B-cell lymphomas, follicular lymphoma, and mantle cell lymphoma, with initial clinical data anticipated in Q4 2024
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Study designed to evaluate safety, preliminary efficacy, pharmacokinetics, and biomarkers. Subjects will receive LD treatment followed by ATA3219 at a dose of 40, 80, 240, or 480 x 106 CAR+ T cells. Each dose level is designed to enroll 3-6 patients
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Preclinical data previously presented demonstrated superior in vivo persistence and CD19-specific anti-tumor efficacy compared to an autologous CD19 CAR T benchmark with no observed toxicity or alloreactivity

ATA3431: CD19/CD20 Program for B-Cell Malignancies

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Preclinical data presented at ASH (Free ASH Whitepaper) 2023 demonstrated early evidence of potent antitumor activity, long-term persistence, and superior tumor growth inhibition compared to an autologous CD19/CD20 CAR T benchmark
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Dual CD19 and CD20 targeting designed to address CD19 escape and tumor variability and may provide additional efficacy in lymphoma
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Atara is progressing toward an IND submission in 2025

Fourth Quarter and Full Year 2023 Financial Results

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Cash, cash equivalents and short-term investments as of December 31, 2023 totaled $51.7 million, as compared to $102.4 million as of September 30, 2023 and $242.8 million as of December 31, 2022
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Net cash used in operating activities was $50.4 million and $193.0 million for the fourth quarter and fiscal year 2023, as compared to $56.9 million and $270.4 million in the same periods in 2022

•
Atara reported net losses of $60.5 million, or $0.56 per share, and $276.1 million, or $2.61 per share, for the fourth quarter and fiscal year 2023, respectively, as compared to $74.6 million, or $0.72 per share, and $228.3 million, or $2.24 per share, for the same periods in 2022
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Total costs and operating expenses include non-cash stock-based compensation, depreciation and amortization expenses of $11.1 million and $50.2 million for the fourth quarter and fiscal year 2023, respectively, as compared to $12.6 million and $59.5 million for the same periods in 2022
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Total costs and operating expenses include restructuring expense of $6.7 million for the fourth quarter and fiscal year 2023 related to the reduction in force Atara announced in November 2023 and which reduced its headcount at that time by approximately 30%. This reduction in force was substantially completed in December 2023
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Atara announced an additional reduction in force in January 2024 that further reduced its headcount by approximately 25% to approximately 170 employees
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Research and development expenses were $49.6 million and $224.8 million for the fourth quarter and fiscal year 2023, respectively, as compared to $62.5 million and $272.5 million for the same periods in 2022
o
Research and development expenses include $5.8 million and $26.5 million of non-cash stock-based compensation expenses for the fourth quarter and fiscal year 2023, respectively, as compared to $7.0 million and $31.4 million for the same periods in 2022
•
General and administrative expenses were $11.5 million and $50.9 million for the fourth quarter and fiscal year 2023, respectively, as compared to $13.2 million and $71.6 million for the same periods in 2022
o
General and administrative expenses include $4.1 million and $18.9 million of non-cash stock-based compensation expenses for the fourth quarter and fiscal year 2023, respectively, as compared to $4.4 million and $22.5 million for the same periods in 2022

2024 Outlook and Cash Runway

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The cash, cash equivalents and short-term investments of $51.7 million as of December 31, 2023 does not include the approximately $27 million received in January 2024 from Pierre Fabre Laboratories from the closing of the expanded global partnership, the approximately $15 million in proceeds from the issuance of pre-funded warrants received in the Company’s January 2024 registered direct offering, or the approximately $10 million in proceeds from the Company’s at-the-market facility (ATM) received in Q1 2024. The cash, cash equivalents and short-term investments as of December 31, 2023, together with these amounts results in a pro-forma December 31, 2023 cash balance of approximately $104 million
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In addition, Atara expects to achieve $40 million of the $100 million in total potential regulatory milestones by BLA acceptance
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Atara expects to receive $20 million of these regulatory milestones in April based on the recent positive pre-BLA meeting, another $20 million in connection with BLA acceptance, and the remaining $60 million in potential regulatory milestones in connection with BLA approval
•
Atara expects full year 2024 operating expenses to decrease by approximately 35% year-over-year, with the large majority of the reduction beginning in Q2 2024 and continuing for the remainder of the year
•
Atara expects that cash, cash equivalents and short-term investments as of December 31, 2023, plus the proceeds received in Q1 2024 as outlined above from:
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Closing of the expanded global partnership with Pierre Fabre Laboratories;
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Issuance of pre-funded warrants; and

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The Company’s ATM program;
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When combined with certain anticipated payments from Pierre Fabre contingent upon the successful filing and approval of the tab-cel BLA, and operating efficiencies resulting from completed workforce reductions, and the planned transition of substantially all activities relating to tab-cel at the time of the BLA transfer to Pierre Fabre, in total will enable funding of planned operations into 2027

About ATA3219

ATA3219 combines the natural biology of unedited T cells with the benefits of an allogeneic therapy. It consists of allogeneic Epstein-Barr virus (EBV)-sensitized T cells that express a CD19 CAR construct for the treatment of CD19+ relapsed or refractory B-cell malignancies, including B-cell non-Hodgkin’s lymphoma and B-cell mediated autoimmune diseases including systemic lupus erythematosus (SLE) with kidney involvement (lupus nephritis [LN]). ATA3219 has been optimized to offer a potential best-in-class profile, featuring off-the-shelf availability. It incorporates multiple clinically validated technologies including a modified CD3ζ signaling domain (1XX) that optimizes expansion and mitigates exhaustion, enrichment during manufacturing for a less differentiated phenotype for robust expansion and persistence and retains the endogenous T-cell receptor without gene editing as a key survival signal for T cells contributing to persistence.

About ATA3431

ATA3431 is an allogeneic, bispecific CAR directed against CD20 and CD19, built on Atara’s EBV T-cell platform. The design consists of a tandem CD20-CD19 design, with binders oriented to optimize potency. Dual targets address the limitations of single antigen loss and tumor variability. ATA3431 features a novel 1XX costimulatory domain, memory phenotype, and retained, unedited T-cell receptor. Preclinical data have demonstrated early evidence of antitumor activity, long-term persistence, and superior tumor growth inhibition compared to an autologous CD19/CD20 CAR T benchmark.

Next-Generation Allogeneic CAR T Approach

Atara is focused on applying Epstein-Barr virus (EBV) T-cell biology, featuring experience in over 600 patients treated with allogeneic EBV T cells, and novel chimeric antigen receptor (CAR) technologies to meet the current limitations of autologous and allogeneic CAR therapies head-on by advancing a potential best-in-class CAR T pipeline in oncology and autoimmune disease. Unlike gene-edited approaches aimed at inactivating T-cell receptor (TCR) function to reduce the risk for graft-vs-host disease, Atara’s allogeneic platform maintains expression of the native EBV TCR that promote in vivo functional persistence while also demonstrating inherently low alloreactivity due to their recognition of defined viral antigens and partial human leukocyte antigen (HLA) matching. A molecular toolkit of clinically-validated technologies—including the 1XX costimulatory domain designed for better cell fitness and less exhaustion while maintaining stemness—offers a differentiated approach to addressing significant unmet need with the next generation CAR T.

On March 28, 2024 Astellas Pharma Inc. (TSE:4503, President and CEO: Naoki Okamura, "Astellas") reported that on March 27, 2024 the Center for Drug Evaluation (CDE) of the China National Medical Products Administration (NMPA) has accepted the supplemental Biologics License Application (sBLA) for enfortumab vedotin with KEYTRUDA (pembrolizumab) as a combination therapy for the first-line treatment of adult patients with previously untreated locally advanced or metastatic urothelial cancer (la/mUC) (Press release, Astellas, MAR 28, 2024, View Source [SID1234641554]). If approved, enfortumab vedotin with KEYTRUDA has the potential to change the treatment paradigm, becoming the first combination treatment to offer an alternative to platinum-containing chemotherapy, the current standard of care in first-line la/mUC.

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Urothelial cancer (UC) encompasses cancers of both the lower urinary tract (bladder and urethra) and upper tract (ureter and renal pelvis), with disease that originates in the lower tract accounting for 90% to 95% of all UC cases.ⅰ,ⅱ Globally, approximately 614,000 new cases of bladder cancer and approximately 220,000 deaths are reported annually.ⅲ It is estimated that approximately 93,000 people in China were diagnosed with bladder cancer and approximately 41,000 deaths were reported in 2022.iv

Ahsan Arozullah, M.D., M.P.H., Senior Vice President, Head of Oncology Development, Astellas
"Locally advanced or metastatic urothelial cancer is a life-threatening condition in China with nearly half of those diagnosed succumbing to the disease. The CDE’s acceptance of our sBLA for enfortumab vedotin and pembrolizumab brings us one step closer to delivering a much-needed, innovative new treatment option for this patient population."

Professor Guo Jun, lead PI in China for the EV-302 trial, director of the Department of Melanoma and Urological Oncology at Beijing Cancer Hospital, executive board member of the Chinese Society Of Clinical Oncology (CSCO)
"In China, the recommended first-line treatment for advanced urothelial cancer is platinum-based chemotherapy, and there are currently no other treatments approved in the first-line setting. Given the efficacy brought by chemotherapy, alternate treatment options are extremely needed to extend survival benefits and potentially improve the prognosis of those patients. The results of the EV-302 study demonstrated that enfortumab vedotin in combination with pembrolizumab, as the first non-platinum first-line treatment, can achieve a clinically meaningful improvement in response rate, nearly double the median progression-free survival, and significantly improve the overall survival benefit of patients with locally advanced or metastatic urothelial cancer compared to chemotherapy."

The sBLA for the first-line use of this combination is based on results from the Phase 3 EV-302 clinical trial (also known as KEYNOTE-A39). The study found that the combination improved overall survival (OS) and progression-free survival (PFS) with statistically significant and clinically meaningful results in patients with previously untreated la/mUC compared to platinum-containing chemotherapy. The safety results were consistent with those previously reported with this combination, and no new safety issues were identified.

The NMPA is also reviewing enfortumab vedotin as a treatment for patients with locally advanced or metastatic urothelial cancer (la/mUC) who received prior treatment with a PD-1/L1 inhibitor and platinum-based chemotherapy.

The Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency is reviewing the enfortumab vedotin in combination with pembrolizumab therapy, as well as Japan’s Ministry of Health, Labour and Welfare (MHLW). The U.S. Food and Drug Administration approved the combination therapy in December 2023.

About EV-302
The EV-302 trial is an open-label, randomized, controlled Phase 3 study, evaluating enfortumab vedotin in combination with pembrolizumab versus platinum-containing chemotherapy in patients with previously untreated la/mUC. The study enrolled 886 patients with previously untreated la/mUC who were eligible for cisplatin- or carboplatin-containing chemotherapy regardless of PD-L1 status. Patients were randomized to receive either enfortumab vedotin in combination with pembrolizumab or platinum-containing chemotherapy. The dual primary endpoints of this trial are OS and PFS per RECIST v1.1 by blinded independent central review (BICR). Select secondary endpoints include ORR per RECIST v1.1 by BICR, DOR per RECIST v1.1 by BICR, and safety.

The EV-302 trial is part of an extensive clinical program evaluating this combination in multiple stages of urothelial cancer and other solid tumors. Findings from EV-302 were presented at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress 2023 in October 2023.

About Bladder and Urothelial Cancer

Urothelial cancer, or bladder cancer, begins in the urothelial cells, which line the urethra, bladder, ureters, renal pelvis, and some other organs.ⅴ

If bladder cancer has spread to surrounding organs or muscles, it is called locally advanced disease. If the cancer has spread to other parts of the body, it is called metastatic disease. ⅵ

Urothelial cancer accounts for 90% of all bladder cancers and can also be found in the renal pelvis, ureter, and urethra.ⅲ

Approximately 12% of cases are locally advanced or metastatic urothelial cancer at diagnosis.ⅶ

Ongoing Investigational Trials
The EV-302 trial (NCT04223856) is an open-label, randomized, controlled Phase 3 study, evaluating enfortumab vedotin in combination with pembrolizumab versus platinum-containing chemotherapy in patients with previously untreated locally advanced or metastatic urothelial cancer (la/mUC) who were eligible for cisplatin- or carboplatin-containing chemotherapy regardless of PD-L1 status.

The EV-103 trial (NCT03288545) is an ongoing, multi-cohort, open-label, multicenter Phase 1b/2 study investigating enfortumab vedotin alone or in combination with pembrolizumab and/or chemotherapy in first- or second-line settings in patients with la/mUC and in patients with muscle-invasive bladder cancer (MIBC).

Enfortumab vedotin in combination with pembrolizumab is being investigated in an extensive program in multiple stages of urothelial cancer, including two Phase 3 clinical trials in MIBC in EV-304 (NCT04700124, also known as KEYNOTE-B15) and EV-303 (NCT03924895, also known as KEYNOTE-905). The use of enfortumab vedotin in combination with pembrolizumab in second-line urothelial cancer and MIBC has not been proven safe or effective.

The EV-202 trial (NCT04225117) is an ongoing, multi-cohort, open-label, multicenter Phase 2 study investigating enfortumab vedotin alone in patients with previously treated advanced solid tumors. This study also has a cohort that is investigating enfortumab vedotin in combination with pembrolizumab in patients with previously untreated recurrent/ metastatic head and neck squamous cell carcinoma.

The EV-203 trial (NCT04995419) is a Phase 2, multicenter, single-arm bridging study in China designed to evaluate the efficacy, safety, and pharmacokinetic performance of enfortumab vedotin as treatment for patients in China. A total of 40 patients were enrolled in the study.

About Enfortumab Vedotin
Enfortumab vedotin is a first-in-class antibody-drug conjugate (ADC) that is directed against Nectin-4, a protein located on the surface of cells and highly expressed in bladder cancer. ⅷ Nonclinical data suggest the anticancer activity of enfortumab vedotin is due to its binding to Nectin-4-expressing cells, followed by the internalization and release of the anti-tumor agent monomethyl auristatin E (MMAE) into the cell, which result in the cell not reproducing (cell cycle arrest) and in programmed cell death (apoptosis). ⅸ

PADCEV (enfortumab vedotin-ejfv) U.S. Indication & Important Safety Information

BOXED WARNING: SERIOUS SKIN REACTIONS

PADCEV can cause severe and fatal cutaneous adverse reactions including Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), which occurred predominantly during the first cycle of treatment, but may occur later.

Closely monitor patients for skin reactions.

Immediately withhold PADCEV and consider referral for specialized care for suspected SJS or TEN or severe skin reactions.

Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions.

Indication

PADCEV, in combination with pembrolizumab, is indicated for the treatment of adult patients with locally advanced or metastatic urothelial cancer (mUC).

PADCEV, as a single agent, is indicated for the treatment of adult patients with locally advanced or mUC who:

have previously received a programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor and platinum-containing chemotherapy, or

are ineligible for cisplatin-containing chemotherapy and have previously received one or more prior lines of therapy.

IMPORTANT SAFETY INFORMATION

Warnings and Precautions

Skin reactions Severe cutaneous adverse reactions, including fatal cases of SJS or TEN occurred in patients treated with PADCEV. SJS and TEN occurred predominantly during the first cycle of treatment but may occur later. Skin reactions occurred in 70% (all grades) of the 564 patients treated with PADCEV in combination with pembrolizumab in clinical trials. When PADCEV was given in combination with pembrolizumab, the incidence of skin reactions, including severe events, occurred at a higher rate compared to PADCEV as a single agent. The majority of the skin reactions that occurred with combination therapy included maculo-papular rash, macular rash and papular rash. Grade 3-4 skin reactions occurred in 17% of patients (Grade 3: 16%, Grade 4: 1%), including maculo-papular rash, bullous dermatitis, dermatitis, exfoliative dermatitis, pemphigoid, rash, erythematous rash, macular rash, and papular rash. A fatal reaction of bullous dermatitis occurred in one patient (0.2%). The median time to onset of severe skin reactions was 1.7 months (range: 0.1 to 17.2 months). Skin reactions led to discontinuation of PADCEV in 6% of patients.

Skin reactions occurred in 58% (all grades) of the 720 patients treated with PADCEV as a single agent in clinical trials. Twenty-three percent (23%) of patients had maculo-papular rash and 34% had pruritus. Grade 3-4 skin reactions occurred in 14% of patients, including maculo-papular rash, erythematous rash, rash or drug eruption, symmetrical drug-related intertriginous and flexural exanthema (SDRIFE), bullous dermatitis, exfoliative dermatitis, and palmar-plantar erythrodysesthesia. The median time to onset of severe skin reactions was 0.6 months (range: 0.1 to 8 months). Among patients experiencing a skin reaction leading to dose interruption who then restarted PADCEV (n=75), 24% of patients restarting at the same dose and 24% of patients restarting at a reduced dose experienced recurrent severe skin reactions. Skin reactions led to discontinuation of PADCEV in 3.1% of patients.

Monitor patients closely throughout treatment for skin reactions. Consider topical corticosteroids and antihistamines, as clinically indicated. For persistent or recurrent Grade 2 skin reactions, consider withholding PADCEV until Grade ≤1. Withhold PADCEV and refer for specialized care for suspected SJS, TEN or for Grade 3 skin reactions. Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions.

Hyperglycemia and diabetic ketoacidosis (DKA), including fatal events, occurred in patients with and without pre-existing diabetes mellitus, treated with PADCEV. Patients with baseline hemoglobin A1C ≥8% were excluded from clinical trials. In clinical trials of PADCEV as a single agent, 17% of the 720 patients treated with PADCEV developed hyperglycemia of any grade; 7% of patients developed Grade 3-4 hyperglycemia (Grade 3: 6.5%, Grade 4: 0.6%). Fatal events of hyperglycemia and DKA occurred in one patient each (0.1%). The incidence of Grade 3-4 hyperglycemia increased consistently in patients with higher body mass index and in patients with higher baseline A1C. The median time to onset of hyperglycemia was 0.5 months (range: 0 to 20 months). Hyperglycemia led to discontinuation of PADCEV in 0.7% of patients. Five percent (5%) of patients required initiation of insulin therapy for treatment of hyperglycemia. Of the patients who initiated insulin therapy for treatment of hyperglycemia, 66% (23/35) discontinued insulin at the time of last evaluation. Closely monitor blood glucose levels in patients with, or at risk for, diabetes mellitus or hyperglycemia. If blood glucose is elevated (>250 mg/dL), withhold PADCEV.

Pneumonitis/Interstitial Lung Disease (ILD) Severe, life-threatening or fatal pneumonitis/ILD occurred in patients treated with PADCEV. When PADCEV was given in combination with pembrolizumab, 10% of the 564 patients treated with combination therapy had pneumonitis/ILD of any grade and 4% had Grade 3-4. A fatal event of pneumonitis/ILD occurred in two patients (0.4%). The incidence of pneumonitis/ILD, including severe events, occurred at a higher rate when PADCEV was given in combination with pembrolizumab compared to PADCEV as a single agent. The median time to onset of any grade pneumonitis/ILD was 4 months (range: 0.3 to 26 months).

In clinical trials of PADCEV as a single agent, 3% of the 720 patients treated with PADCEV had pneumonitis/ILD of any grade and 0.8% had Grade 3-4. The median time to onset of any grade pneumonitis/ILD was 2.9 months (range: 0.6 to 6 months).

Monitor patients for signs and symptoms indicative of pneumonitis/ILD such as hypoxia, cough, dyspnea or interstitial infiltrates on radiologic exams. Evaluate and exclude infectious, neoplastic and other causes for such signs and symptoms through appropriate investigations. Withhold PADCEV for patients who develop Grade 2 pneumonitis/ILD and consider dose reduction. Permanently discontinue PADCEV in all patients with Grade 3 or 4 pneumonitis/ILD.

Peripheral neuropathy (PN) When PADCEV was given in combination with pembrolizumab, 67% of the 564 patients treated with combination therapy had PN of any grade, 36% had Grade 2 neuropathy, and 7% had Grade 3 neuropathy. The incidence of PN occurred at a higher rate when PADCEV was given in combination with pembrolizumab compared to PADCEV as a single agent. The median time to onset of Grade ≥2 PN was 6 months (range: 0.3 to 25 months).
PN occurred in 53% of the 720 patients treated with PADCEV as a single agent in clinical trials including 38% with sensory neuropathy, 8% with muscular weakness and 7% with motor neuropathy. Thirty percent of patients experienced Grade 2 reactions and 5% experienced Grade 3-4 reactions. PN occurred in patients treated with PADCEV with or without preexisting PN. The median time to onset of Grade ≥2 PN was 4.9 months (range: 0.1 to 20 months). Neuropathy led to treatment discontinuation in 6% of patients.

Monitor patients for symptoms of new or worsening PN and consider dose interruption or dose reduction of PADCEV when PN occurs. Permanently discontinue PADCEV in patients who develop Grade ≥3 PN.

Ocular disorders were reported in 40% of the 384 patients treated with PADCEV as a single agent in clinical trials in which ophthalmologic exams were scheduled. The majority of these events involved the cornea and included events associated with dry eye such as keratitis, blurred vision, increased lacrimation, conjunctivitis, limbal stem cell deficiency, and keratopathy. Dry eye symptoms occurred in 30% of patients, and blurred vision occurred in 10% of patients, during treatment with PADCEV. The median time to onset to symptomatic ocular disorder was 1.7 months (range: 0 to 30.6 months). Monitor patients for ocular disorders. Consider artificial tears for prophylaxis of dry eyes and ophthalmologic evaluation if ocular symptoms occur or do not resolve. Consider treatment with ophthalmic topical steroids, if indicated after an ophthalmic exam. Consider dose interruption or dose reduction of PADCEV for symptomatic ocular disorders.

Infusion site extravasation Skin and soft tissue reactions secondary to extravasation have been observed after administration of PADCEV. Of the 720 patients treated with PADCEV as a single agent in clinical trials, 1% of patients experienced skin and soft tissue reactions, including 0.3% who experienced Grade 3-4 reactions. Reactions may be delayed. Erythema, swelling, increased temperature, and pain worsened until 2-7 days after extravasation and resolved within 1-4 weeks of peak. Two patients (0.3%) developed extravasation reactions with secondary cellulitis, bullae, or exfoliation. Ensure adequate venous access prior to starting PADCEV and monitor for possible extravasation during administration. If extravasation occurs, stop the infusion and monitor for adverse reactions.

Embryo-fetal toxicity PADCEV can cause fetal harm when administered to a pregnant woman. Advise patients of the potential risk to the fetus. Advise female patients of reproductive potential to use effective contraception during PADCEV treatment and for 2 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with PADCEV and for 4 months after the last dose.

ADVERSE REACTIONS

Most common adverse reactions, including laboratory abnormalities (≥20%) (PADCEV in combination with pembrolizumab) Increased aspartate aminotransferase (AST), increased creatinine, rash, increased glucose, PN, increased lipase, decreased lymphocytes, increased alanine aminotransferase (ALT), decreased hemoglobin, fatigue, decreased sodium, decreased phosphate, decreased albumin, pruritus, diarrhea, alopecia, decreased weight, decreased appetite, increased urate, decreased neutrophils, decreased potassium, dry eye, nausea, constipation, increased potassium, dysgeusia, urinary tract infection and decreased platelets.

Most common adverse reactions, including laboratory abnormalities (≥20%) (PADCEV monotherapy) Increased glucose, increased AST, decreased lymphocytes, increased creatinine, rash, fatigue, PN, decreased albumin, decreased hemoglobin, alopecia, decreased appetite, decreased neutrophils, decreased sodium, increased ALT, decreased phosphate, diarrhea, nausea, pruritus, increased urate, dry eye, dysgeusia, constipation, increased lipase, decreased weight, decreased platelets, abdominal pain, dry skin.

EV-302 Study: 440 patients with previously untreated la/mUC (PADCEV in combination with pembrolizumab)

Serious adverse reactions occurred in 50% of patients treated with PADCEV in combination with pembrolizumab. The most common serious adverse reactions (≥2%) were rash (6%), acute kidney injury (5%), pneumonitis/ILD (4.5%), urinary tract infection (3.6%), diarrhea (3.2%), pneumonia (2.3%), pyrexia (2%), and hyperglycemia (2%). Fatal adverse reactions occurred in 3.9% of patients treated with PADCEV in combination with pembrolizumab including acute respiratory failure (0.7%), pneumonia (0.5%), and pneumonitis/ILD (0.2%).
Adverse reactions leading to discontinuation of PADCEV occurred in 35% of patients. The most common adverse reactions (≥2%) leading to discontinuation of PADCEV were PN (15%), rash (4.1%) and pneumonitis/ILD (2.3%). Adverse reactions leading to dose interruption of PADCEV occurred in 73% of patients. The most common adverse reactions (≥2%) leading to dose interruption of PADCEV were PN (22%), rash (16%), COVID-19 (10%), diarrhea (5%), pneumonitis/ILD (4.8%), fatigue (3.9%), hyperglycemia (3.6%), increased ALT (3%) and pruritus (2.5%). Adverse reactions leading to dose reduction of PADCEV occurred in 42% of patients. The most common adverse reactions (≥2%) leading to dose reduction of PADCEV were rash (16%), PN (13%) and fatigue (2.7%).

EV-103 Study: 121 patients with previously untreated la/mUC who were not eligible for cisplatin-containing chemotherapy (PADCEV in combination with pembrolizumab)

Serious adverse reactions occurred in 50% of patients treated with PADCEV in combination with pembrolizumab; the most common (≥2%) were acute kidney injury (7%), urinary tract infection (7%), urosepsis (5%), sepsis (3.3%), pneumonia (3.3%), hematuria (3.3%), pneumonitis/ILD (3.3%), urinary retention (2.5%), diarrhea (2.5%), myasthenia gravis (2.5%), myositis (2.5%), anemia (2.5%), and hypotension (2.5%). Fatal adverse reactions occurred in 5% of patients treated with PADCEV in combination with pembrolizumab, including sepsis (1.6%), bullous dermatitis (0.8%), myasthenia gravis (0.8%), and pneumonitis/ILD (0.8%). Adverse reactions leading to discontinuation of PADCEV occurred in 36% of patients; the most common (≥2%) were PN (20%) and rash (6%). Adverse reactions leading to dose interruption of PADCEV occurred in 69% of patients; the most common (≥2%) were PN (18%), rash (12%), increased lipase (6%), pneumonitis/ILD (6%), diarrhea (4.1%), acute kidney injury (3.3%), increased ALT (3.3%), fatigue (3.3%), neutropenia (3.3%), urinary tract infection (3.3%), increased amylase (2.5%), anemia (2.5%), COVID-19 (2.5%), hyperglycemia (2.5%), and hypotension (2.5%). Adverse reactions leading to dose reduction of PADCEV occurred in 45% of patients; the most common (≥2%) were PN (17%), rash (12%), fatigue (5%), neutropenia (5%), and diarrhea (4.1%).

EV-301 Study: 296 patients previously treated with a PD-1/L1 inhibitor and platinum-based chemotherapy (PADCEV monotherapy)

Serious adverse reactions occurred in 47% of patients treated with PADCEV; the most common (≥2%) were urinary tract infection, acute kidney injury (7% each), and pneumonia (5%). Fatal adverse reactions occurred in 3% of patients, including multiorgan dysfunction (1%), hepatic dysfunction, septic shock, hyperglycemia, pneumonitis/ILD, and pelvic abscess (0.3% each). Adverse reactions leading to discontinuation occurred in 17% of patients; the most common (≥2%) were PN (5%) and rash (4%). Adverse reactions leading to dose interruption occurred in 61% of patients; the most common (≥4%) were PN (23%), rash (11%), and fatigue (9%). Adverse reactions leading to dose reduction occurred in 34% of patients; the most common (≥2%) were PN (10%), rash (8%), decreased appetite, and fatigue (3% each).

EV-201, Cohort 2 Study: 89 patients previously treated with a PD-1/L1 inhibitor and not eligible for cisplatin-based chemotherapy (PADCEV monotherapy)

Serious adverse reactions occurred in 39% of patients treated with PADCEV; the most common (≥3%) were pneumonia, sepsis, and diarrhea (5% each). Fatal adverse reactions occurred in 8% of patients, including acute kidney injury (2.2%), metabolic acidosis, sepsis, multiorgan dysfunction, pneumonia, and pneumonitis/ILD (1.1% each). Adverse reactions leading to discontinuation occurred in 20% of patients; the most common (≥2%) was PN (7%). Adverse reactions leading to dose interruption occurred in 60% of patients; the most common (≥3%) were PN (19%), rash (9%), fatigue (8%), diarrhea (5%), increased AST, and hyperglycemia (3% each). Adverse reactions leading to dose reduction occurred in 49% of patients; the most common (≥3%) were PN (19%), rash (11%), and fatigue (7%).

DRUG INTERACTIONS

Effects of other drugs on PADCEV (Dual P-gp and Strong CYP3A4 Inhibitors)
Concomitant use with dual P-gp and strong CYP3A4 inhibitors may increase unconjugated monomethyl auristatin E exposure, which may increase the incidence or severity of PADCEV toxicities. Closely monitor patients for signs of toxicity when PADCEV is given concomitantly with dual P-gp and strong CYP3A4 inhibitors.

SPECIFIC POPULATIONS

Lactation Advise lactating women not to breastfeed during treatment with PADCEV and for 3 weeks after the last dose.

Hepatic impairment Avoid the use of PADCEV in patients with moderate or severe hepatic impairment.

For more information, please see the U.S. full Prescribing Information including BOXED WARNING for PADCEV here.

On March 28, 2024 Affimed N.V. (Nasdaq: AFMD) ("Affimed" or the "Company"), a clinical-stage immuno-oncology company committed to giving patients back their innate ability to fight cancer, reported financial results and provided an update on clinical and corporate progress for the year ended December 31, 2023 (Press release, Affimed, MAR 28, 2024, View Source [SID1234641553]).

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"The clinical achievements in 2023 with our three programs, AFM24, acimtamig, and AFM28, provide a strong foundation for us to deliver on meaningful clinical milestones across the portfolio in 2024 and beyond," said Dr. Andreas Harstrick, Chief Medical Officer and interim Chief Executive Officer at Affimed. "We have seen compelling responses in treatment refractory NSCLC EGFR-wt patients and will report mature PFS data of these patients as well as response data from the NSCLC EGFR-mut cohort in the second quarter. With the LuminICE-203 study of acimtamig with AlloNK successfully launched in 2023, we are progressing toward an initial data update in the second quarter. The long-term follow-up data for study for the AFM13-104, presented at ASH (Free ASH Whitepaper), demonstrating that approximately 30% of patients remain in remission beyond 1 year, have further enhanced our confidence in the therapeutic potential of acimtamig in combination with NK cells. Finally, AFM28 has reached the final dose level in the escalation study providing the basis for continued development. With all three clinical programs moving forward, we are focused on the execution of these programs confident in Affimed’s ability to fulfill our overarching mission of delivering innovative therapies to cancer patients."

Program Updates

AFM24 (EGFR/CD16A tumors)
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As of January 4, clinical response update to the Phase 1/2a AFM24-102 trial in EGFR-wt NSCLC reported 4 confirmed responses, including 1 CR, 3 PRs, and 7 stable diseases in 15 heavily pre-treated patients, resulting in a disease control rate of 73 percent. All patients were pre-treated with platinum-based chemotherapy and checkpoint inhibitors PD [L]-1. Based on the promising results, Affimed expanded enrollment in this cohort to 40 patients.

In addition, the company continues to enroll in the EGFR-mut NSCLC cohort for a planned number of 25 patients.

Mature PFS data from the first 15 patients from the EGFR-wt cohort and response data from the EGFR-mut cohort are expected in Q2 2024.

Acimtamig (AFM13; CD30/CD16A tumors)

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Initial safety and efficacy data from the LuminICE-203 (AFM13-203) study expected in Q2 2024. LuminICE-203 is a Phase 2 clinical study investigating acimtamig in combination with Artiva’s AlloNK cells in patients with r/r classical Hodgkin lymphoma (HL). Safety Review Committee meeting and initiation of enrollment in cohorts 3 and 4 is expected mid-April.

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Updated Phase 1/2 AFM13-104 study data demonstrated an ORR of 97% and a CR rate of 78% in 32 patients with r/r HL, presented at ASH (Free ASH Whitepaper) 2023. As of the cutoff date, the median EFS was 9.8 months with 84% patients alive at 12 months. The median duration of response was 8.8 months. The treatment regimen continues to demonstrate a good safety and tolerability profile with no cases of cytokine release syndrome (CRS), immune effector cell-associated neurotoxicity syndrome (ICANS) or graft versus host disease (GVHD) of any grade. The oral presentation included a total of 42 patients enrolled, with 36 patients treated at the recommended Phase 2 dose (RP2D). All patients were heavily pretreated and refractory to their most recent line of therapy with active progressive disease at the time of enrollment.

AFM28 (CD123/CD16A)

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Completed enrollment of the fifth cohort, recruiting patients in the sixth and final cohort in the multi-center Phase 1 open-label, dose-escalation study (AFM28-101), of AFM28 monotherapy in CD123-positive r/r AML. No dose-limiting toxicities were reported. Further clinical development of AFM28 is planned in combination with an allogeneic off-the-shelf NK cell product.

Corporate Restructuring:

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The corporate restructuring announced earlier this year has been fully implemented.

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The restructuring included a streamlining of operations resulting in a 50% reduction in the Company’s workforce.

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The Company is focusing resources on advancing its clinical programs, AFM24, acimtamig, and AFM28, through the various stages of development.

Upcoming Milestones:

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Data from the NSCLC expansion cohorts in the Phase 1/2a AFM24+atezolizumab combination study expected in Q2 2024.

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Initial data readout from the LuminICE-203 (AFM13 combination with AlloNK NK cells) study expected in Q2 2024.

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Further progress updates from AFM28-101 dose escalation expected in Q2 2024.

Full Year 2023 Financial Highlights

Affimed’s consolidated financial statements are prepared in accordance with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standard Board (IASB). The consolidated financial statements are presented in Euros (€), the Company’s functional and presentation currency.

As of December 31, 2023, cash, cash equivalents and investments totaled €72.0 million compared to €190.3 million on December 31, 2022. Based on our current operating plan and assumptions, we anticipate that our liquidity will support operations into H2 2025.

Net cash used in operating activities for the year ended December 31, 2023, was €110.3 million compared to €104.9 million for the year ended December 31, 2022.

Total revenue for the year ended December 31, 2023, was €8.3 million compared with €41.4 million for the year ended December 31, 2022. Revenue in 2022 and 2023 predominantly relates to the Roivant and Genentech collaborations for which we have now completed the work assigned to us under the respective collaboration agreements.

Research and development expenses for the year ended December 31, 2023, were €95.0 million compared to €98.8 million in 2022.

General and administrative expenses for the year ended December 31, 2023, were €24.7 million compared to €32.1 million for the year ended December 31, 2022. The decrease was due to a decline in legal, consulting and insurance expenses, as well as share-based payment expenses.

Net finance income/costs for the year ended December 31, 2023, were €0.7 million compared to €2.1 million for the year ended December 31, 2022. Net finance income/costs are largely due to foreign exchange gains/losses related to assets denominated in U.S. dollars as a result of currency fluctuations between the U.S. dollar and Euro during the year.

The weighted number of common shares outstanding for the year ended December 31, 2023, was 14.9 million, adjusted to reflect the impact of the reverse stock split executed in the first quarter of 2024.

Net loss for the year ended December 31, 2023, was €105.9 million, or €7.09 loss per common share compared with a net loss of €86.0 million, or €6.04 loss per common share, for the year ended December 31, 2022.

Additional information regarding these results is included in the notes to the consolidated financial statements as of December 31, 2023, included in Affimed’s filings with the U.S. Securities and Exchange Commission (SEC).

Note on International Financial Reporting Standards (IFRS)

Affimed prepares and reports consolidated financial statements and financial information in accordance with IFRS as issued by the IASB. None of the financial statements were prepared in accordance with U.S. Generally Accepted Accounting Principles. Affimed maintains its books and records in Euro.

Conference Call and Webcast Information

Affimed will host a conference call and webcast on March 28, 2024, at 8:30 a.m. EDT / 13:30 CET to discuss full year 2023 financial results and corporate developments.

The conference call will be available via phone and webcast. The live audio webcast of the call will be available in the "Webcasts" section on the "Investors" page of the Affimed website at View Source To access the call by phone, please use link:

https://register.vevent.com/register/BI43eadbb12f6143a5bdcb2c9549ef2e76, and you will be provided with dial-in details and a pin number.

Note: To avoid delays, we encourage participants to dial into the conference call 15 minutes ahead of the scheduled start time. A replay of the webcast will be accessible at the same link for 30 days following the call.

On March 28, 2024 Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer patients, reported fourth quarter and full-year 2023 financial results and summarized recent developments (Press release, Monopar Therapeutics, MAR 28, 2024, View Source [SID1234641542]).

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Recent Developments

Novel MNPR-101 Radiopharmaceutical Program targeting uPAR – Phase 1 dosimetry clinical trial to commence in the coming weeks

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MNPR-101-Zr Phase 1 dosimetry clinical trial has Human Research Ethics Committee (HREC) clearance in Australia and is on track to initiate at the Melbourne Theranostic Innovation Centre (MTIC) within the next few weeks.
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Will enroll patients with advanced cancers, aiming for those most likely to have uPAR expression, which include a majority of all triple-negative breast, colorectal, and pancreatic cancers.

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Will utilize state-of-the-art positron emission tomography (PET) imaging to assess tumor uptake, normal organ biodistribution, and safety.

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Internationally recognized radiopharmaceutical physician, Professor Rodney Hicks, will be the lead investigator for the trial.

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Positive preclinical data support the potential of a MNPR-101 based radiopharmaceutical to provide a very meaningful clinical benefit to patients.

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In February 2024, Monopar shared preclinical biodistribution and efficacy data using imaging and therapeutic radioisotopes conjugated to MNPR-101. Imaging with MNPR-101-Zr in a pancreatic cancer human tumor xenograft mouse model showed high specificity and durable tumor uptake. With the therapeutic radioisotope actinium-225 (Ac-225) conjugated to MNPR-101, near complete elimination of tumor was achieved after a single injection in a triple negative breast human tumor xenograft mouse model.

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In March 2024, Monopar shared biodistribution data using the therapeutic radioisotope Lutetium-177 (Lu-177) conjugated to MNPR-101. The images show highly preferential uptake in tumor, helping explain the near complete elimination of tumors observed after a single injection of therapeutic radioisotopes bound to MNPR-101.

Camsirubicin – Phase 1b Dose-Escalation Trial, Currently enrolling the Fifth Dose-Level Cohort (650 mg/m2)

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Monopar is presently enrolling patients at the fifth dose level, which is over twice the highest dose reached in any prior camsirubicin clinical trial (650 mg/m2 versus 265 mg/m2).

Results for the Fourth Quarter and Year Ended December 31, 2023, Compared to the Fourth Quarter and Year Ended December 31, 2022

Cash and Net Loss

Cash, cash equivalents and short-term investments as of December 31, 2023, were $7.3 million. Monopar expects that its current funds, which include an additional $3.2 million from the net proceeds of its at-the-market facility in Q1 2024, will be sufficient for Monopar to continue operations at least through June 30, 2025, to conduct and conclude its first-in-human clinical trial with Monopar’s MNPR-101-Zr radiopharma program and continue the Company’s other pipeline programs.

Net loss for the fourth quarter of 2023 was $1.8 million or $0.12 per share compared to $2.9 million or $0.22 per share for the fourth quarter of 2022. Net loss for the year ended December 31, 2023 was $8.4 million or $0.61 per share compared to $10.5 million or $0.83 per share for the year ended December 31, 2022.

Research and Development (R&D) Expenses

R&D expenses for the fourth quarter of 2023 were $1.0 million compared to $2.1 million for the fourth quarter of 2022. This decrease of $1.1 million was primarily due to (1) a decrease of $0.9 million for Validive clinical trial expense, (2) a decrease of $0.2 million in camsirubicin manufacturing costs, and (3) a decrease of $0.1 million in R&D salaries, partially offset by an increase of $0.1 million in MNPR-101 radiopharmaceutical program development activities.

R&D expenses for the year ended December 31, 2023 were $5.6 million compared to $7.6 million for the year ended December 31, 2022. This decrease of $2.0 million was primarily due to (1) a decrease of $1.4 million for Validive clinical trial and manufacturing costs, (2) a decrease of $0.9 million in camsirubicin clinical trial and manufacturing costs, (3) a decrease of $0.1 million in R&D salaries, partially offset by an increase of $0.4 million in MNPR-101 radiopharma activity.

General and Administrative (G&A) Expenses

G&A expenses for the fourth quarter of 2023 were $0.9 million, compared to $0.8 million for the fourth quarter of 2022. This increase of $0.1 million was primarily due to an increase in G&A personnel expenses.

G&A expenses for the year ended December 31, 2023 were $3.2 million, compared to $2.9 million for the year ended December 31, 2022. This increase of $0.3 million was primarily due to an increase in G&A personnel expenses.