Molecular Targeting Technologies, Inc.

WEST CHESTER, PA, USA I December 09, 2024 I Molecular Targeting Technologies, Inc. (MTTI) published preclinical study results for their proprietary 225 Ac-EBTATE against SSTR2 NET cancers online in the European Journal of Nuclear Medicine. (“Long acting 225 Ac-EBTATE is highly efficacious against somatostatin receptor-2-positive neuroendocrine tumors” ( https://rdcu.be/d2lCG ). Professor Humphrey Fonge of the Université de Laval and lead author commented, “At just 40% of the administered dose reported for 225 Ac-DOTATATE, 225 Ac-EBTATE produces enhanced anti-tumor efficacy in Small Cell lung cancer (SCLC) and Pan-neuroendocrine tumor (NET) models as shown with complete tumor remissions. At a therapeutic dose of 2x 34 kBq, 225 Ac-EBTATE showed general safety for 28 days after blood biochemistry analysis, CBC, and histopathological examination of major organs and tissues. We demonstrated that 225 Ac-EBTATE was effective against human small-cell lung cancer (SCLC) with 80% complete remission and 100% survival in preclinical models.” MTTI has licensed commercial use rights for the patented Evans blue (EB) technology from the National Institute of Biomedical Imaging and Bioengineering (“ NIBIB ”), part of the National Institutes of Health (“ NIH ”). This platform is the basis for the best-in-class, new generation, collection of targeted radiopharmaceuticals (TRP). EB binds to serum albumin, extending in vivo circulatory half-life and tumor residence time, enhancing up to 30-fold uptake at a tumor and enabling good efficacy with significantly lower radiopharmaceutical activity and fewer dosing cycles vs. the current standard of care. Our 3-year follow up of 177 Lu-EBTATE in patients* (N=30) with metastatic neuroendocrine tumors, demonstrated good safety with no nephro- or hepatoxicity and 86% disease control rate using only 40% of the administered dose of 177 Lu-DOTATATE. Dr. Jean-Mathieu Beauregard, MD, Associate Professor of Department of Radiology of Université Laval, said, “I am encouraged to see the positive results of 225 Ac-EBTATE in treating small cell lung cancer and Pan-neuroendocrine tumor (NET) in preclinical studies. I look forward to working with MTTI and Professor Fonge to translate this into the clinic.” Dr. Chris Pak, President & CEO of MTTI commented “ 225 Ac-EBTATE effectiveness was encouraging, paralleling the clinical superiority of 177 Lu-EBTATE. We look forward to collaborating with Professors Beauregard and Fonge to drive 225 Ac-EBTATE into clinical trials in 2025.” Molecular Targeting Technologies, Inc. (MTTI) . Molecular Targeting Technologies, Inc. is a private, clinical stage biotech developing targeted radiopharmaceuticals (TRP) for rare cancers. MTTI is committed to building value by translating innovative TRP to improve human health. For more information: www.mtarget.com . *Jiang Y, Liu Q, Wang G, et al. Safety and efficacy of peptide receptor radionuclide therapy with 177 Lu-DOTA-EB-TATE in patients with metastatic neuroendocrine tumors. Theranostics. 2022;12(15):6437-6445. SOURCE: Molecular Targeting Technologies Inc

WEST CHESTER, Pa.--( BUSINESS WIRE )--Molecular Targeting Technologies, Inc. (MTTI) will update findings on its proprietary topical near-infrared fluorescent dye, CypH-11 (Cmetglo), at the World Molecular Imaging Conference (WMIC) meeting in Montreal from September 9-13 and at the Peritoneal Surface Oncology Group International (PSOGI) meeting in Lyon from September 26-28, 2024. This convenient fast-acting technology* shows promise as an effective real-time tool for oncologists in fluorescence-guided surgery (FGS). This will allow clinicians to see small tumor residue and achieve a more complete resection of cancer in the abdominal cavity. We expect that Cmetglo may improve patient outcomes by avoiding unnecessary damage to normal tissue and increase progression-free survival of patients with peritoneal surface malignancies (PM). Dr. Johnny Ong, MD, Associate Professor, Department of Sarcoma, Peritoneal and Rare Tumors, National Cancer Centre Singapore** commented: “One of the limitations of cytoreductive surgery (CRS) is the difficulty in distinguishing tumors from normal and scar tissues. Here, we performed ex vivo validation of patient tissues to evaluate the clinical utility of Cmetglo in detecting PM via topical administration. Preliminary analysis suggests that the best clinical utility of Cmetglo could be in patients with colorectal malignancy, with the possibility of expanding its use to other histological subtypes.” Dr. Brian D Gray, SVP Research and Development noted: “MTTI’s Cmetglo makes the invisible visible. Tumor margins and metastases glow under near-infrared light. It can be a valuable addition to the surgeon’s’ armamentarium to achieve maximal cytoreduction during FGS.” Dr. Seung Koo Lee, Assistant Professor of Cell Biology Research, in Radiology at Weill Cornell Medicine***, commented: “CypH-11 is a sprayable pH-responsive fluorogenic probe that exhibits minimal fluorescence at neutral pH; however, it fluoresces brightly in an acidic environment which is a universal signature of cancer cell proliferation. Its capability of detecting small-sized ovarian tumors was further demonstrated by the spray of CypH-11 in a disseminated high-grade serous ovarian cancer (HGSOC) model.” Chris Pak, President & CEO of MTTI commented: “This groundbreaking molecule builds on MTTI’s innovative legacy in targeted diagnostics and therapeutics. We’re pursuing its use in colorectal, ovarian, and brain cancers, adding value to patients, surgeons, and other stakeholders.” Molecular Targeting Technologies, Inc. (MTTI) . MTTI is a private, clinical stage biotech developing targeted radiotherapeutics for rare cancers. MTTI is committed to building value by translating innovative diagnostics and radiopharmaceuticals to improve human health. For more information: www.mtarget.com . *This research is supported by the National Cancer Institute (NCI) for a SBIR phase II grant # R44CA275434 to MTTI. **This research is also supported by the Singapore Ministry of Health through the National Medical Research Council (NMRC) Office, MOH Holdings Pte Ltd and administered by National Health Innovation Centre (NHIC) under its Innovation to Industry (I2I) grant (NHIC Ref No.: NHIC-I2I-2306016) to National Cancer Centre Singapore. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not reflect the views of NHIC ***Weill Cornell Medicine and MTTI hold intellectual property and financial interests in Cmetglo technology under development by MTTI.

WEST CHESTER, Pa.--(BUSINESS WIRE)-- Molecular Targeting Technologies, Inc. (MTTI), will update findings on both 177Lu-EBTATE clinical and 225Ac-EBTATE preclinical work during the 2024 SNMMI meeting in Toronto June 8-11 (exhibition booth #1819). 177Lu-EBTATE® an EvaThera drug, is the first patented long-acting peptide targeted radiotherapeutic drugs. It selectively targets and binds to somatostatin receptor 2 on neuroendocrine and other tumors, which are then killed by the radionuclide payload. Evans blue in EBTATE binds to serum albumin, extending in vivo circulatory half-life and tumor residence time, enabling effective use of significantly lower radiopharmaceutical activity and fewer dosing cycles vs. the current standard of care (SOC). These benefits are also evident in recent studies of the 225Ac-EBTATE homolog. Professor Zhaohui Zhu, MD, Peking Union Medical College Hospital, reflected “In our 3-year follow up on 30 patients* with metastatic neuroendocrine tumors (mNETs), 177Lu-EBTATE demonstrated good safety, with no nephro- or hepatoxicity and 86% disease control rate using 60% less radioactivity than 177Lu-DOTATATE. We observed low incidence of grade 3 hematoxicity (3.4% vs 15% of reported SOC) and no long-term nephrotoxicity of any grade.” The study “Long acting 225Ac-EBTATE is highly efficacious against somatostatin receptor-2-positive small-cell lung cancer (SCLC)**” has been accepted for presentation at 2024 SNMMI. Professor Humphrey Fonge of the University of Saskatchewan commented, "225Ac-EBTATE (2x 30 kBq administered 10 days apart) was effective against SCLC with 80% complete remissions and 100% survival. Treatment yielded a 2-fold greater tumor growth inhibition when compared with 225Ac-DOTATATE, at 60% less administered radioactivity. Toxicity, as measured by body weight, blood counts, and chemistry showed that 225Ac-EBTATE was well tolerated at a highly effective dose. 225Ac-EBTATE shows great promise against SCLC." Chris Pak, President & CEO of MTTI commented: “We are pleased to learn that 177Lu-EBTATE exhibited no safety concerns and was effective at a lower dose than SOC in mNET patients. We are also encouraged that 225Ac-EBTATE out-performed 225Ac-DOTATATE, providing a 2-fold greater tumor growth inhibition in preclinical findings using a much lower dose of radioactivity. We look forward to advancing our clinical trials with these radiotherapeutic drugs in small-cell lung and other cancers.” Molecular Targeting Technologies, Inc. (MTTI). MTTI is a private, clinical stage biotech developing targeted radiotherapeutics for rare cancers. MTTI is committed to building value by translating innovative radiopharmaceuticals to improve human health. For more information: . *Safety and efficacy of peptide receptor radionuclide therapy with 177Lu-DOTA-EB-TATE in patients with metastatic neuroendocrine tumors. Theranostics 2022; 12: 6437-6445 **The data will be presented in 2024 SNMMI. Fabrice Njotu, Humphrey Fonge et al. of the University of Saskatchewan, and Molecular Targeting Technologies, Inc. View source version on businesswire.com: Contacts Chris Pak, Email: cpak@mtarget.com Source: Molecular Targeting Technologies, Inc. View this news release online at: