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IPAX-Linz Study Reports Promising Efficacy for TLX101 Glioma Therapy Candidate

1. TLX101 shows promising survival rates in advanced glioblastoma patients. 2. No serious adverse events reported in the Phase 2 IPAX-Linz trial. 3. Median overall survival was 12.4 months with TLX101 treatment. 4. Registration-enabling study for TLX101 submitted, aiming for H2 2025 enrollment. 5. Preliminary results presented at upcoming Nuclear Medicine Symposium in Vienna.

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Why Bullish?

TLX101's promising efficacy and ongoing studies may boost investor confidence. Historical data shows positive correlation between trial results and stock performance.

How important is it?

The article discusses critical trial results directly linked to TLX, influencing market perception significantly.

Why Long Term?

Pending regulatory approvals and further studies could solidify TLX101's market position. Similar biotech advancements typically lead to gradual price appreciation.

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MELBOURNE, Australia and INDIANAPOLIS, April 16, 2025 (GLOBE NEWSWIRE) -- Telix Pharmaceuticals Limited (ASX: TLX, NASDAQ: TLX, Telix, the Company) today announces preliminary results from the Phase 2 IPAX-Linz study of TLX101 (131I-iodofalan1) in recurrent high-grade glioma (brain cancer), substantiating the patient benefit seen in the IPAX-1 study2. IPAX-Linz is a single-arm Phase 2 investigator-initiated trial (IIT). IPAX-Linz evaluates the safety, tolerability and preliminary efficacy of TLX101 therapy, in combination with external beam radiation therapy (EBRT). The target patient population is patients at first or second recurrence with high-grade gliomas (HGG), including glioblastoma. Treatment with TLX101 was well tolerated with no serious adverse events reported. IPAX-Linz demonstrated encouraging preliminary efficacy data, indicating a median overall survival (OS) of 12.4 months from the initiation of treatment with TLX101, or 32.2 months from initial diagnosis3. This is consistent with the positive efficacy signal generated in the IPAX-1 study in patients at first recurrence, with only one prior resection and treatment with standard chemoradiotherapy. IPAX-1 reported a median OS of 13 months from the initiation of treatment with TLX101, or 23 months from initial diagnosis4. In comparison, recurrent glioblastoma patients treated with EBRT alone have a reported median survival of 9.9 months from treatment5. Eight patients were included in the study with adaptive dosing of intravenous TLX101 up to administered activity of 4 GBq before, and up to 2 GBq after, second line EBRT, administered in sequential injections. Inclusion criteria comprised patients with glioblastoma with current evidence of first or second recurrence after standard radiochemotherapy, at least six months since end of first line EBRT, and molecular imaging with Telix’s investigational PET6 agent for glioma, TLX101-CDx (Pixclara®7, 18F-floretyrosine, or 18F-FET), indicating pathologically increased amino acid uptake. Surgery for relapsed tumors was allowed. Of the eight IPAX-Linz patients, five had MGMT unmethylated tumors8, typically associated with especially poor prognosis. Professor Josef Pichler, Kepler University Hospital, Austria, Principal Investigator in the IPAX-Linz, IPAX-1, and IPAX-2 studies, commented, “These preliminary results in relapsed patients showed that TLX101 treatment was very well tolerated, with no serious adverse events, at a higher dose than in previous studies. Early efficacy from IPAX-1 was corroborated, despite the poor prognostic parameters with MGMT unmethylated tumors and multiple relapses before commencing experimental therapy in this IPAX-Linz study. TLX101 continues to show significant potential to improve outcomes for patients living with high-grade glioma. These results also potentially support higher therapeutic doses in subsequent prospective controlled studies.” Dr. David Cade, Chief Medical Officer at Telix, said, “These are encouraging results, offering new options for patients with historically poor outcomes. We are grateful to Dr. Pichler and his team for building on the IPAX-1 study in a more advanced and complex study cohort that is also representative of a real-world patient population.” Preliminary results from IPAX-Linz will be presented by Dr. Pichler at the Nuclear Medicine and Neurooncology (NMN) Symposium taking place in Vienna, Austria from 9 – 10 May 2025. Visit the event website for further information: https://www.nmn-society.org/ TLX101 Development Program and Registration-Enabling Study Update Telix continues to investigate TLX101 in front-line and recurrent settings. IPAX-2, a Phase 1/2 study in front-line glioblastoma in combination with standard of care and using TLX101-CDx as a companion diagnostic, continues to recruit patients. Telix has submitted for ethics approval a registration-enabling study of TLX101 in recurrent glioblastoma. Subject to approval this will enable patient enrolment to commence at Australian sites in H2 2025, ahead of international expansion. Following the successful pre-IND9 meeting with the U.S. Food and Drug Administration (FDA) in Q4 2024, the Company is also on track to submit an IND application in H1 2025, with the goal of commencing the study at U.S. sites in H2 2025. About TLX101 TLX101 (131I-iodofalan or 131I-IPA) is a systemically administered targeted radiation therapy that targets L-type amino acid transporter 1 (LAT1), which is typically over-expressed in glioblastoma. TLX101 therapy utilizes a small molecule approach due to the need to cross the blood brain barrier, the normal protective barrier that prevents many potential drug candidates entering the brain. TLX101 has received orphan drug designation in the U.S. and Europe for the treatment of glioma. TLX101 and TLX101-CDx have not received a marketing authorization in any jurisdiction. About Telix Pharmaceuticals Limited Telix is a biopharmaceutical company focused on the development and commercialization of therapeutic and diagnostic radiopharmaceuticals and associated medical technologies. Telix is headquartered in Melbourne, Australia, with international operations in the United States, Brazil, Canada, Europe (Belgium and Switzerland), and Japan. Telix is developing a portfolio of clinical and commercial stage products that aims to address significant unmet medical needs in oncology and rare diseases. ARTMS, IsoTherapeutics, Lightpoint, Optimal Tracers and RLS are Telix Group companies. Telix is listed on the Australian Securities Exchange (ASX: TLX) and the Nasdaq Global Select Market (NASDAQ: TLX). Visit www.telixpharma.com for further information about Telix, including details of the latest share price, ASX and SEC filings, investor and analyst presentations, news releases, event details and other publications that may be of interest. You can also follow Telix on LinkedIn, X and Facebook. Telix Investor Relations Ms. Kyahn WilliamsonTelix Pharmaceuticals LimitedSVP Investor Relations and Corporate CommunicationsEmail: kyahn.williamson@telixpharma.com This announcement has been authorised for release by the Telix Pharmaceuticals Limited Disclosure Committee on behalf of the Board. Legal Notices You should read this announcement together with our risk factors, as disclosed in our most recently filed reports with the Australian Securities Exchange (ASX), U.S. Securities and Exchange Commission (SEC), including our Annual Report on Form 20-F filed with the SEC, or on our website. The information contained in this announcement is not intended to be an offer for subscription, invitation or recommendation with respect to securities of Telix Pharmaceuticals Limited (Telix) in any jurisdiction, including the United States. The information and opinions contained in this announcement are subject to change without notification.  To the maximum extent permitted by law, Telix disclaims any obligation or undertaking to update or revise any information or opinions contained in this announcement, including any forward-looking statements (as referred to below), whether as a result of new information, future developments, a change in expectations or assumptions, or otherwise. No representation or warranty, express or implied, is made in relation to the accuracy or completeness of the information contained or opinions expressed in the course of this announcement. This announcement may contain forward-looking statements, including within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, that relate to anticipated future events, financial performance, plans, strategies or business developments. Forward-looking statements can generally be identified by the use of words such as “may”, “expect”, “intend”, “plan”, “estimate”, “anticipate”, “believe”, “outlook”, “forecast” and “guidance”, or the negative of these words or other similar terms or expressions. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to differ materially from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Forward-looking statements are based on Telix’s good-faith assumptions as to the financial, market, regulatory and other risks and considerations that exist and affect Telix’s business and operations in the future and there can be no assurance that any of the assumptions will prove to be correct. In the context of Telix’s business, forward-looking statements may include, but are not limited to, statements about: the initiation, timing, progress and results of Telix’s preclinical and clinical trials, and Telix’s research and development programs; Telix’s ability to advance product candidates into, enrol and successfully complete, clinical studies, including multi-national clinical trials; the timing or likelihood of regulatory filings and approvals for Telix’s product candidates, manufacturing activities and product marketing activities; Telix’s sales, marketing and distribution and manufacturing capabilities and strategies; the commercialisation of Telix’s product candidates, if or when they have been approved; Telix’s ability to obtain an adequate supply of raw materials at reasonable costs for its products and product candidates; estimates of Telix’s expenses, future revenues and capital requirements; Telix’s financial performance; developments relating to Telix’s competitors and industry; and the pricing and reimbursement of Telix’s product candidates, if and after they have been approved. Telix’s actual results, performance or achievements may be materially different from those which may be expressed or implied by such statements, and the differences may be adverse. Accordingly, you should not place undue reliance on these forward-looking statements. ©2025 Telix Pharmaceuticals Limited. Telix Pharmaceuticals®, Telix Group company, and Telix product names and logos are trademarks of Telix Pharmaceuticals Limited and its affiliates – all rights reserved. Trademark registration status may vary from country to country. ______________________________1 131I-iodofalan is the International Nonproprietary Name (INN) assigned to TLX101 by the World Health Organization. TLX101 is also known as 4-L-[131I] iodo-phenylalanine, or 131I-IPA.2 Telix ASX disclosure 21 September 2022. Pichler et al. Neurooncol Adv. 2024. ClinicalTrials.gov ID: NCT03849105.3 Primary endpoints were safety and tolerability; secondary endpoints comprised progression-free survival and overall survival.4 Collation of available data, not from head-to-head data. Cross-trial results should be interpreted with caution and may require further follow-up or validation.5 Kulinich et al. Acta Neurochir (Wien). 2021.6 Positron emission tomography.7 Brand name subject to final regulatory approval.8 MGMT (O6-methylguanine-DNA methyltransferase) is an enzyme that repairs DNA damage caused by chemotherapy, leading to resistance.9 Investigational New Drug.

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