Neldaleucel

Preliminary data from study in patients with lymphoma enrolled at City of Hope National Medical Center was presented at the 11th Global Summit on Hematologic Malignancies in Whistler, BC, Canada Study participants tolerated initial dose level well and demonstrated durable objective responses after MT-601 treatment Study participant with Non-Hodgkin’s Lymphoma who relapsed after anti-CD19 CAR T cell therapy remains in complete response nine months after MT-601 treatment HOUSTON, April 08, 2024 (GLOBE NEWSWIRE) -- Marker Therapeutics, Inc. (Nasdaq: MRKR), a clinical-stage immuno-oncology company focusing on developing next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumor indications, today reported that Geoffrey Shouse, D.O., Ph.D., the Principal Investigator at City of Hope National Medical Center in Duarte, CA, was invited to present his clinical experience from the APOLLO study at the 11th Global Summit on Hematologic Malignancies in Whistler, BC, Canada (April 2-7, 2024). Dr. Shouse provided an overview on the clinical observations obtained at City of Hope on Saturday, April 6, 2024. The Phase 1 APOLLO study is investigating MT-601, a multi-tumor associated antigen (multiTAA)-specific T cell product, for the treatment of patients with lymphoma who have failed or are ineligible to receive anti-CD19 chimeric antigen receptor (CAR) T cell therapy. Marker previously reported that the first study participant tolerated the treatment well and achieved a complete response (CR) eight weeks after the second infusion of MT-601, which was maintained at the six months follow-up visit (Press Release, September 11, 2023). During the presentation, Dr. Shouse showed that this study participant remains in CR nine months following initial treatment with MT-601. This APOLLO participant had diffuse large B cell lymphoma (DLBCL) and failed four prior lines of therapy, including anti-CD19 CAR T cell therapy. The participant relapsed within 90 days of CAR T cell therapy yet maintained a CR for at least nine months after treatment with MT-601, suggesting that response to MT-601 was more durable compared to CAR T cells in this study participant. Dr. Shouse’s presentation included data from two additional study participants that have been treated at City of Hope. One of the study participants had transformed follicular NHL and failed a total of 12 lines of therapy including mosunetuzumab (bispecific antibody) for follicular NHL, and Yescarta (anti-CD19 CAR T cell therapy) after transformation into DLBCL. At the time of MT-601 administration, only follicular NHL persisted after the last treatment. Eight weeks after initial infusion with MT-601, this study participant achieved a CR and remains in CR three months following treatment with MT-601. The third patient treated at City of Hope as part of the APOLLO trial presented with DLBCL with cutaneous involvement only and was not eligible for CAR T cell therapy. When evaluated at eight weeks post-treatment, the study participant was in partial response with all lesions decreasing in size including one that has completely resolved. Dr. Shouse also reported that treatment was well tolerated among all patients with no significant treatment-related adverse events including no reports of cytokine release syndrome (CRS) or immune-effector cell associated neurotoxicity syndrome (ICANS), and that all patients will continue to be monitored closely for long-term treatment effects and durability of response. “We are encouraged by these clinical results and the potential impact of MT-601 in patients with lymphoma who have relapsed or are ineligible for CAR T cell therapy,” said Geoffrey Shouse, D.O., Ph.D., the Principal Investigator at City of Hope National Medical Center in Duarte, CA. "Observing objective responses in three out of three patients with lymphoma treated with MT-601 at our site is a remarkable and gratifying achievement and we are encouraged by the benefits this therapy has provided to our patients. I am honored to have been invited to showcase these data on MT-601 to leading experts in the field at the 11th Global Summit on Hematologic Malignancies.” The therapeutic potential of MT-601 is further reinforced by non-clinical data demonstrating that MT-601 is able to eradicate lymphoma cells resistant to anti-CD19 CAR T cells (Press Release, May 31, 2023). CAR T cell therapy is associated with severe adverse events such as cytokine release syndrome or neurotoxicity, as well as the potential risk of inducing secondary cancers (U.S. Food and Drug Administration, November 28, 2023). MultiTAA-specific T cell therapies have been well-tolerated in clinical trials to date. Marker believes that multiTAA-specific T cells represent a safe alternative to CAR T cells due to their non-genetically engineered approach that selectively expands tumor-specific T cells from a patient’s/donor’s blood without the risk of mutagenesis. “Although treatment with CD19-targeting CAR T cells is rapidly expanding among hematological malignancies, 40-60% of patients relapse within one year of therapy,” commented Juan Vera, M.D., President and Chief Executive Officer of Marker Therapeutics. “The sustained CR for nine months in our first study participant, who relapsed 90 days following CAR T cell treatment, indicates durable efficacy of MT-601 versus CAR T cell therapy in this participant.” “Though the number of patients treated to date in our APOLLO study is quite small, observing objective responses in all three study participants treated at City of Hope is encouraging, and highlights the potential benefit of MT-601 in patients with lymphoma. We are continuing to enroll additional patients to hopefully reinforce these promising observations and look forward to treating more participants in this Phase 1 study,” concluded Dr. Vera. About MT-601MT-601 utilizes a novel non-genetically modified approach that specifically targets six different tumor antigens upregulated in lymphoma cells (Survivin, PRAME, WT-1, NY-ESO-1, SSX-2, MAGEA-4). Marker is currently investigating MT-601 in the Company-sponsored Phase 1 APOLLO trial (clinicaltrials.gov identifier: NCT05798897) for the treatment of lymphoma patients who are relapsed/refractory after or ineligible to anti-CD19 CAR T cell therapies. About APOLLO The APOLLO trial (clinicaltrials.gov Identifier: NCT05798897) is a Phase 1, multicenter, open-label study designed to evaluate the safety and efficacy of MT-601 in participants with relapsed or refractory lymphoma who either failed anti-CD19 chimeric antigen receptor (CAR) T cell therapy or are ineligible for anti-CD19 CAR T cell therapy. The primary objective of this exploratory Phase 1 clinical trial is to evaluate the optimum dose, safety, and preliminary efficacy of MT-601 in participants with various lymphoma subtypes. Under the APOLLO trial, it is anticipated that nine clinical sites across the United States will cumulatively enroll up to approximately 30 participants during the dose escalation phase. About multiTAA-specific T cellsThe multi-tumor associated antigen (multiTAA)-specific T cell platform is a novel, non-genetically modified cell therapy approach that selectively expands tumor-specific T cells from a patient's/donor’s blood capable of recognizing a broad range of tumor antigens. Since multiTAA-specific T cells are not genetically engineered, Marker believes that its product candidates will be easier and less expensive to manufacture, with reduced toxicities, compared to current engineered CAR-T and TCR-based approaches, and may provide patients with meaningful clinical benefits. As a result, Marker believes that its portfolio of T cell therapies has a compelling product profile, as compared to current gene-modified CAR-T and TCR-based therapies. About Marker Therapeutics, Inc.Marker Therapeutics, Inc. is a Houston, TX-based clinical-stage immuno-oncology company specializing in the development of next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumors. Clinical trials that enrolled more than 200 patients across various hematological and solid tumor indications showed that the Company’s autologous and allogeneic multiTAA-specific T cell products were well tolerated and demonstrated durable clinical responses. Marker’s goal is to introduce novel T cell therapies to the market and improve patient outcomes. To achieve these objectives, the Company prioritizes the preservation of financial resources and focuses on operational excellence. Marker’s unique T cell platform is strengthened by non-dilutive funding from U.S. state and federal agencies supporting cancer research. To receive future press releases via email, please visit: https://www.markertherapeutics.com/email-alerts. Forward-Looking StatementsThis release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Statements in this news release concerning the Company’s expectations, plans, business outlook or future performance, and any other statements concerning assumptions made or expectations as to any future events, conditions, performance or other matters, are “forward-looking statements.” Forward-looking statements include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things: our research, development and regulatory activities and expectations relating to our non-engineered multi-tumor antigen specific T cell therapies; the effectiveness of these programs or the possible range of application and potential curative effects and safety in the treatment of diseases; the timing, conduct, interim results announcements and outcomes of our clinical trials of our product candidates, including MT-601 for the treatment of patients with lymphoma. Forward-looking statements are by their nature subject to risks, uncertainties and other factors which could cause actual results to differ materially from those stated in such statements. Such risks, uncertainties and factors include, but are not limited to the risks set forth in the Company’s most recent Form 10-K, 10-Q and other SEC filings which are available through EDGAR at WWW.SEC.GOV. The Company assumes no obligation to update its forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release except as may be required by law. ContactsTIBEREND STRATEGIC ADVISORS, INC.InvestorsDaniel Kontoh-Boateng(862) 213-1398dboateng@tiberend.com

Lead program in patients with lymphoma demonstrated preliminary safety and efficacy results with sustained complete response in first study participant treated with MT-601 (Neldaleucel) following CAR T relapse Secured non-dilutive funding of $2 million from National Institute of Health (NIH) to support clinical program for treatment of patients with Acute Myeloid Leukemia (AML) Received Orphan Drug Designation (ODD) from European Medicines Agency (EMA) for multiTAA-specific T cell product candidate MT-401 (Zedenoleucel) for the treatment of patients with AML Implemented leadership transition resulting in appointments of Juan Vera, M.D. as President and Chief Executive Officer and Monic Stuart, M.D., MPH as Chief Medical Officer Executed comprehensive non-dilutive agreement with Cell Ready™ effecting a significant reduction in overhead expenses and extending Marker’s runway into the fourth quarter of 2025 Strategic prioritization of clinical pipeline with focus on MT-601 (Neldaleucel) in patients with lymphoma HOUSTON, March 25, 2024 (GLOBE NEWSWIRE) -- Marker Therapeutics, Inc. (Nasdaq: MRKR), a clinical-stage immuno-oncology company focusing on developing next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumors, today reported recent corporate developments and financial results for the year ended December 31, 2023. “The progress achieved in 2023 we believe establishes a robust foundation for Marker and sets the stage for continued advancement in our clinical programs and business operations in the upcoming year,” commented Juan Vera, M.D. President and Chief Executive Officer of Marker Therapeutics. “A pinnacle of last year's success was the Phase 1 lymphoma study milestone, where we observed a sustained complete response in our first study participant treated with MT-601 following CAR T relapse. This patient relapsed within 90 days of CAR T therapy but has remained in a complete remission for at least six months after MT-601 treatment, indicating that MT-601 has superior durability in this study participant. The promising clinical and non-clinical observations from our lymphoma study reinforced our strategic decision, made public this January, to prioritize the development of MT-601 in patients with lymphoma who have failed or are ineligible for CAR T therapy. Focusing on this unique niche of patients and by targeting multiple antigens, our approach differs significantly from competitors, and we believe that MT-601 could address an unmet medical need in this patient population with a better safety profile and at lower costs when compared to gene-modified cell therapy approaches.” Further bolstering Marker’s position is the award of $2 million in non-dilutive funding from the NIH last year, which is instrumental in supporting the advancement of the Company’s MT-401 “Off-the-Shelf” (MT-401-OTS) program in patients with Acute Myeloid Leukemia (AML). Dr. Vera added, “This award is expected to enable us to proceed with the OTS program without affecting our ongoing study for patients with lymphoma. Decreasing time to treatment is critical for rapidly progressing cancers, such as patients with minimal residual disease (MRD) in AML.” Utilizing an OTS product manufactured from healthy donors will help to bypass the treatment delay that is associated with patient-specific manufacture and should shorten the time until the product is made available to patients, while reducing manufacturing costs. Additionally, receiving Orphan Drug Designation (ODD) by the European Medicines Agency (EMA) substantiates the potential impact of MT-401 in patients with AML and presents an opportunity to develop the therapy on an expedited basis. Marker also executed a comprehensive non-dilutive agreement with Cell Ready which included a sale of select cell manufacturing assets from Marker for approximately $19 million in cash. This major transaction, which we expect will enable a reduction of overhead expenses of about $11 million annually, not only improves our financial health but, we believe, also positions us uniquely in the cell therapy industry — a sector where such significant non-dilutive funding and operational savings are remarkably rare. This strategic foresight, together with the drawdowns available from our grant funds, should extend the cash runway into the fourth quarter of 2025. “These accomplishments underline our commitment to driving scientific innovation, our vision in making major impact with our novel multiTAA technology for patients in need, and our emphasis on cash preservation and operational excellence. As we have pivoted into 2024, we remain poised to advance our clinical endeavors with the goal of introducing transformative therapies to the market and improving patient outcomes,” concluded Dr. Vera. 2023 PROGRAM UPDATES & OPERATIONAL HIGHLIGHTS MT-601 (Lymphoma) Non-Clinical Data on MT-601 Marker developed a long-term in vitro killing assay 1) to investigate resistance mechanisms after CAR T cell treatment, and 2) to analyze if MT-601 (targeting 6 TAAs) can eliminate CAR-resistant lymphoma cells.Anti-CD19 CAR T cell treatment killed 98% of lymphoma cells in vitro. However, after three weeks, CD19-negative tumor cells started to grow. Further anti-CD19 CAR T cell treatments were ineffective as these tumor cells lack target antigen (CD19) expression (Pre-Clinical Data in Lymphoma, May 31, 2023).Treatment with MT-601 demonstrated long-term growth inhibition (over three weeks) of CAR-resistant lymphoma cells, highlighting that MT-601 has the potential to effectively treat CD19 CAR-resistant tumors (Press Release, May 31, 2023). Clinical Highlights Phase 1 multicenter APOLLO trial (clinicaltrials.gov identifier: NCT05798897), investigating MT-601 in patients with lymphoma who relapsed or are ineligible for anti-CD19 CAR T cell therapies, was selected as lead program based on promising preliminary clinical results and non-clinical proof-of-concept data.The first study participant, a 57-year-old female with diffuse large B cell lymphoma (DLBCL), was enrolled in the Phase 1 dose escalation stage of the trial after failing 4 prior lines of therapy, including relapsing within 90 days of anti-CD19 CAR T cell therapy. Without prior lymphodepletion, the participant was treated with MT-601. In December 2023, the Company announced that the study participant tolerated initial dose level well and had maintained a complete response to therapy six months after initial treatment with MT-601 (Press Release, December 11, 2023).The Company is enrolling additional patients in the Phase 1 APOLLO trial and expects to report further data in the first half of 2024.MT-601 designated non-proprietary name “Neldaleucel” by United States Adopted Name (USAN) Counsel and International Nonproprietary Names (INN) Expert Committee. MT-601 (Pancreatic) Investigational New Drug (IND) application cleared by U.S. Food and Drug Administration (FDA) for multicenter Phase 1 trial of MT-601 in patients with metastatic pancreatic cancer in combination with front-line chemotherapy.Clinical advancement will be pending additional financial support from non-dilutive grant activities. MT-401-OTS (Acute Myeloid Leukemia or Myelodysplastic Syndrome) U.S. FDA has granted an Investigational New Drug (IND) to investigate MT-401 as an “Off-the-Shelf” (MT-401-OTS) product in patients with AML or Myelodysplastic Syndrome (MDS). MT-401-OTS is manufactured from healthy donors and a cellular inventory has been established with ongoing efforts to expand.Marker announced non-clinical proof-of-concept data supporting the clinical benefits of MT-401-OTS in AML.The Company has secured $2M in non-dilutive funding from the NIH Small Business Innovation Research (SBIR) program. These funds will support the clinical investigation of MT-401-OTS in patients with AML without affecting the ongoing Phase 1 APOLLO study in patients with lymphoma.Granted ODD from the Committee for Orphan Medicinal Products of the EMA for the treatment of patients with AML in 2023. ODD was received from the U.S. FDA in 2020.Clinical program initiation of MT-401-OTS anticipated for the second half of 2024. 2023 CORPORATE HIGHLIGHTS Announced clinical pipeline prioritization in January 2024 to strategically focus on MT-601 in patients with lymphoma. This announcement also included program updates that highlighted the potential of the Company’s MT-401-OTS program for AML.Appointed Juan Vera, M.D., as President and Chief Executive Officer and Monic Stuart, M.D., MPH, as Chief Medical Officer. Dr. Vera was also appointed the Company’s Principal Financial and Accounting Officer.On June 26, 2023, Marker completed a non-dilutive transaction with Cell Ready, under which Cell Ready purchased certain cell manufacturing assets from Marker for approximately $19 million in cash. On February 22, 2024, Marker entered into a Master Services Agreement for Product Supply with Cell Ready. Under this agreement, Cell Ready will perform a wide variety of services for Marker, including research and development, and manufacturing in support of Marker’s clinical trials.Terminated common stock purchase agreement with Lincoln Park Capital.Extended financial runway into the fourth quarter of 2025. FISCAL YEAR 2023 FINANCIAL HIGHLIGHTS Cash Position and Guidance: At December 31, 2023, Marker had cash and cash equivalents of $15.1 million. The Company believes that its existing cash and cash equivalents will fund its operating expenses into the fourth quarter of 2025, inclusive of available drawdowns from grant funds. R&D Expenses: Research and development expenses were $10.4 million for the year ended December 31, 2023, compared to $12.0 million for the year ended December 31, 2022. G&A Expenses: General and administrative expenses were $7.5 million for the year ended December 31, 2023, compared to $11.3 million for the year ended December 31, 2022. Net Loss: Marker reported a net loss of $8.2 million for the year ended December 31, 2023, compared to a net loss of $29.9 million for the year ended December 31, 2022. About multiTAA-specific T cells The multi-tumor associated antigen (multiTAA)-specific T cell platform is a novel, non-genetically modified cell therapy approach that selectively expands tumor-specific T cells from a patient's/donor’s blood capable of recognizing a broad range of tumor antigens. Since multiTAA-specific T cells are not genetically engineered, Marker believes that its product candidates will be easier and less expensive to manufacture, with reduced toxicities, compared to current engineered CAR-T and TCR-based approaches, and may provide patients with meaningful clinical benefits. As a result, Marker believes that its portfolio of T cell therapies has a compelling product profile, as compared to current gene-modified CAR-T and TCR-based therapies. About Marker Therapeutics, Inc. Marker Therapeutics, Inc. is a Houston, TX-based clinical-stage immuno-oncology company specializing in the development of next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumors. Clinical trials that enrolled more than 200 patients across various hematological and solid tumor indications showed that the Company’s autologous and allogeneic multiTAA-specific T cell products were well tolerated and demonstrated durable clinical responses. Marker’s goal is to introduce novel T cell therapies to the market and improve patient outcomes. To achieve these objectives, the Company prioritizes the preservation of financial resources and focuses on operational excellence. Marker’s unique T cell platform is strengthened by non-dilutive funding from U.S. state and federal agencies supporting cancer research. To receive future press releases via email, please visit: https://www.markertherapeutics.com/email-alerts. Forward-Looking Statements This release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Statements in this news release concerning the Company’s expectations, plans, business outlook or future performance, and any other statements concerning assumptions made or expectations as to any future events, conditions, performance or other matters, are “forward-looking statements.” Forward-looking statements include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things: our research, development and regulatory activities and expectations relating to our non-engineered multi-tumor antigen specific T cell therapies; the effectiveness of these programs or the possible range of application and potential curative effects and safety in the treatment of diseases; and the timing, conduct and success of our clinical trials of our product candidates, including MT-601 and MT-401-OTS. Forward-looking statements are by their nature subject to risks, uncertainties and other factors which could cause actual results to differ materially from those stated in such statements. Such risks, uncertainties and factors include, but are not limited to the risks set forth in the Company’s most recent Form 10-K, 10-Q and other SEC filings which are available through EDGAR at www.sec.gov. The Company assumes no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release. Marker Therapeutics, Inc.Consolidated Balance Sheets(Audited) December 31, December 31, 2023 2022 ASSETS Current assets: Cash and cash equivalents $15,111,450 $11,782,172 Prepaid expenses and deposits 988,126 1,849,239 Other receivables 1,027,815 2,402,004 Current assets of discontinued operations – 585,840 Total current assets 17,127,391 16,619,255 Non-current assets of discontinued operations – 17,802,929 Total assets $17,127,391 $34,422,184 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable and accrued liabilities $1,745,193 $2,521,193 Related party payable 1,329,655 – Current liabilities of discontinued operations – 5,260,616 Total current liabilities 3,074,848 7,781,809 Non-current liabilities of discontinued operations – 7,039,338 Total liabilities 3,074,848 14,821,147 Stockholders' equity: Preferred stock, $0.001 par value, 5 million shares authorized, 0 shares issued and outstanding at December 31, 2023 and 2022, respectively – – Common stock, $0.001 par value, 30 million shares authorized, 8.9 million and 8.4 million shares issued and outstanding as of December 31, 2023 and 2022, respectively (see Note 10) 8,891 8,406 Additional paid-in capital 450,329,515 447,641,680 Accumulated deficit (436,285,863) (428,049,049)Total stockholders' equity 14,052,543 19,601,037 Total liabilities and stockholders' equity $17,127,391 $34,422,184 Marker Therapeutics, Inc.Consolidated Statements of Operations(Audited) For the Years Ended December 31, 2023 2022 Revenues: Grant income $3,311,133 $3,513,544 Total revenues 3,311,133 3,513,544 Operating expenses: Research and development 10,416,789 11,968,428 General and administrative 7,475,722 11,336,120 Total operating expenses 17,892,511 23,304,548 Loss from operations (14,581,378) (19,791,004)Other income (expenses): Arbitration settlement – (232,974)Interest income 539,158 248,063 Loss from continuing operations before income taxes (14,042,220) (19,775,915)Income tax expense 3,675 – Net loss from continuing operations (14,045,895) (19,775,915) Discontinued operations: Loss from discontinued operations (2,922,406) (10,154,779)Gain on disposal of discontinued operations, net of $63,000 in tax 8,731,487 – Income (loss) from discontinued operations 5,809,081 (10,154,779)Net loss $(8,236,814) $(29,930,694) Net earnings (loss) per share: Loss from continuing operations, basic and diluted $(1.59) $(2.37)Income (loss) from discontinued operations, basic and diluted $0.66 $(1.22)Net loss per share, basic and diluted $(0.94) $(3.58) Weighted average number of common shares outstanding: Basic 8,809,382 8,351,003 Diluted 8,809,382 8,351,003 Marker Therapeutics, Inc.Consolidated Statements of Cash Flows(Audited) For the Years Ended December 31, 2023 2022 Cash Flows from Operating Activities: Net loss $(8,236,814) $(29,930,694)Less: gain (loss) from discontinued operations, net of $63,000 in tax 5,809,081 (10,154,779)Net loss from continuing operations (14,045,895) (19,775,915)Reconciliation of net loss to net cash used in operating activities: Stock-based compensation 858,269 3,304,634 Gain on lease termination – (278,681)Changes in operating assets and liabilities: Prepaid expenses and deposits 861,113 104,147 Other receivables 1,374,189 (2,401,767)Accounts payable and accrued expenses 611,262 (1,319,710)Deferred revenue – (1,146,186)Net cash used in operating activities – continuing operations (10,341,062) (21,513,478)Net cash used in operating activities – discontinued operations (6,098,899) (5,458,675)Net cash used in operating activities (16,439,961) (26,972,153)Cash Flows from Investing Activities: Net cash provided by (used in) investing activities – discontinued operations 18,664,122 (4,945,136)Net cash provided by (used in) investing activities 18,664,122 (4,945,136)Cash Flows from Financing Activities: Proceeds from issuance of common stock, net 1,014,640 202,130 Proceeds from stock options exercise 90,477 – Net cash provided by financing activities 1,105,117 202,130 Net increase (decrease) in cash and cash equivalents 3,329,278 (31,715,159)Cash and cash equivalents at beginning of the year 11,782,172 43,497,331 Cash and cash equivalents at end of the year $15,111,450 $11,782,172 Contacts TIBEREND STRATEGIC ADVISORS, INC.InvestorsDaniel Kontoh-Boateng(862) 213-1398dboateng@tiberend.com