RAD Doses 1st Patient in Therapeutic Trial of 177Lu-RAD202

RAD Doses 1st Patient in Therapeutic Trial of 177Lu-RAD202

Radiopharm Theranostics (RAD:AU) has announced RAD Doses 1st Patient in Therapeutic Trial of 177Lu-RAD202

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Radiopharm Theranostics

Radiopharm Theranostics


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Developing innovative radiopharmaceuticals for a highly underserved oncology sector

Radiopharm Theranostics Doses First Patient in Phase 1 'HEAT' Trial of 177Lu-RAD202 for Treatment of Advanced HER2-Positive Solid Tumors

Radiopharm Theranostics Doses First Patient in Phase 1 'HEAT' Trial of 177Lu-RAD202 for Treatment of Advanced HER2-Positive Solid Tumors

Phase 1 1 First-In-Human study designed to assess safety   ,   tolerability   , right dose for Phase 2 and early signs of efficacy   of 177Lu-RAD20   2   in individuals with   advanced HER2-positive solid   tumors

Previous clinical proof-of concept data 2 for targeting HER-2 demonstrated the safety and biodistribution of 99mTc-RAD202 in humans

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Radiopharm Theranostics Reports Preclinical Lu177-B7H3-mAb Data Demonstrating Favourable Biodistribution and High Tumour Uptake

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Supports plans to advance the RV01 program to first-in-human therapeutic basket study in solid tumour cancers

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ITM and Radiopharm Sign Supply Agreement for n.c.a. Lutetium-177

ITM and Radiopharm Sign Supply Agreement for n.c.a. Lutetium-177

ITM Isotope Technologies Munich SE (ITM), a leading radiopharmaceutical biotech company, and Radiopharm Theranostics (ASX:RAD; NASDAQ: RADX "Radiopharm"), a developer of a world-class platform of radiopharmaceutical products for both diagnostic and therapeutic uses, today announced the signing of a supply agreement that will provide Radiopharm with ITM's medical radioisotope, non-carrier-added Lutetium-177 (n.c.a. 177 Lu), to enable its usage in the clinical and potential future commercial development of the 177 Lu-based molecules in Radiopharm's development pipeline.

Under the terms of the agreement, Radiopharm will use ITM's n.c.a. 177 Lu across its clinical pipeline, including in key programs such as RAD 204 (PD-L1-targeting nanobody, Phase 1), RAD 202 (HER2-targeting nanobody, Phase 1), and RV01 (B7-H3-targeting monoclonal antibody, preclinical), for the treatment of solid tumors. Coupled with the targeting molecules that are designed to deliver ITM's n.c.a. 177 Lu directly to tumor sites, the radioisotope emits therapeutic beta radiation with the aim to destroy malignant cells in a highly precise and localized manner.

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Radiopharm Theranostics Accelerates 177Lu-RAD204 Phase 1 Dose Escalation Clinical Trial Based on Positive Recommendation from Data Safety and Monitoring Committee

Radiopharm Theranostics Accelerates 177Lu-RAD204 Phase 1 Dose Escalation Clinical Trial Based on Positive Recommendation from Data Safety and Monitoring Committee

DSMC concluded that Phase 1 study may continue as planned without any modifications

On track to complete the enrollment of the first two cohorts by mid-2025

Radiopharm Theranostics (ASX: RAD, Nasdaq: RADX, "Radiopharm" or the "Company"), a clinical-stage biopharmaceutical company focused on developing innovative oncology radiopharmaceuticals for areas of high unmet medical need, announced today that it has achieved a key milestone in its ongoing clinical development program for its clinical-stage radiotherapeutic asset, 177Lu-RAD204, as the Data and Safety Monitoring Committee (DSMC) has approved to proceed to the next dose in its Phase 1 clinical trial in patients with PD-L1 positive advanced cancers 1 . The DSMC is an independent multidisciplinary group that conducts detailed reviews of unblinded study data, discusses potential safety concerns and provides recommendations regarding trial continuation.

"We greatly appreciate the DSMC's judicious review of our first cohort of patients in the Phase 1 study of 177Lu-RAD204, which allows us to advance to the higher dose cohort in a variety of PD-L1- driven cancers," said Riccardo Canevari, CEO and Managing Director of Radiopharm Theranostics. "With this clearance from the DSMC, the increased number of active centers and expansion to multiple tumor types beyond Non-Small Cell Lung Cancer (NSCLC), we expect to accelerate our timelines for complete enrolment of the next cohort by mid-2025. We believe that RAD204 has the potential to strongly improve clinical outcomes for patients with PD-L1 positive advanced cancers and we look forward to seeing data from the first two cohorts of patients later this year."

The DSMC reviewed the first cohort of four patients treated with 30mCi of 177Lu-RAD204 and confirmed that there was positive safety, pharmacokinetic and biodistribution data and agreed that the study may continue without modifications. The second cohort of patients will start at 60mCi of Lu177 rather than 40mCi previously assumed in the protocol. The second cohort of patients is expected to be enrolled by mid-year 2025 and will include expansion to multiple tumor types including NSCLC, Small-Cell Lung Cancer (SCLC), Triple-negative Breast Cancer (TNBC), Cutaneous Melanoma, head and neck squamous cell carcinoma (HNSCC) and Endometrial Cancer.

There are currently four clinical trial sites actively screening and recruiting patients in Australia.

About 177Lu-RAD204:

RAD204 is a single-domain monoclonal antibody (sdAb) that targets PD-L1, a protein that helps control the immune system and is overexpressed in many solid cancers, making it an attractive therapeutic target in multiple tumor types, including NSCLC, SCLC, TNBC, Cutaneous Melanoma, HNSCC, and Endometrial Cancer. Previously published Phase I imaging data of 16 NSCLC patients with 99Tc-RAD204 demonstrated that the diagnostic compound is safe and is associated with acceptable dosimetry 2 .

Tumor targeting with radioimmunotherapies such as 177Lu-RAD204 has the potential to address resistance mechanisms to current standard-of-care treatment options.

About Radiopharm Theranostics

Radiopharm Theranostics is a clinical stage radiotherapeutics company developing a world-class platform of innovative radiopharmaceutical products for diagnostic and therapeutic applications in areas of high unmet medical need. Radiopharm is listed on ASX (RAD) and on NASDAQ (RADX). The company has a pipeline of distinct and highly differentiated platform technologies spanning peptides, small molecules and monoclonal antibodies for use in cancer. The clinical program includes one Phase 2 and three Phase 1 trials in a variety of solid tumor cancers including lung, breast, and brain. Learn more at radiopharmtheranostics.com .

Authorized on behalf of the Radiopharm Theranostics Board of Directors by Executive Chairman Paul Hopper.

For more information:

Investors:
Riccardo Canevari
CEO & Managing Director
P: +1 862 309 0293
E: rc@radiopharmtheranostics.com

Anne Marie Fields
Precision AQ (formerly Stern IR)
E: annemarie.fields@precisionaq.com

Media:
Matt Wright
NWR Communications
P: +61 451 896 420
E: matt@nwrcommunications.com.au

Follow Radiopharm Theranostics:
Website – https://radiopharmtheranostics.com/
X – https://x.com/TeamRadiopharm
LinkedIn – https://www.linkedin.com/company/radiopharm-theranostics/
InvestorHub – https://investorhub.radiopharmtheranostics.com/

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Human avian influenza cases have so far been rare during this outbreak in the US, as currently the virus is only spread to humans through exposure to infected animals. As of May 30, 2025, 70 human cases have been detected in the country, and one death has been reported. However, concerns such as the possibility of mutations that could increase the chance of human-to-human transmission are stoking calls for better preparedness and access to bird flu vaccines.

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