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ASX ANNOUNCEMENT 7 April 2026 Radiopharm Theranostics and Siemens Healthineers Sign Clinical Supply Agreement for RAD101 in the U.S. Data from the interim analysis in Phase 2b trial of RAD101 showed significant and selec

Key Takeaway: Radiopharm Theranostics has entered into a Clinical Supply Agreement with Siemens Healthineers for RAD101, a novel imaging agent for diagnosing recurrent brain metastases. Interim analysis from the Phase 2b trial revealed significant tumor uptake and a 90% concordance rate with MRI. The partnership is crucial for scaling up production for a forthcoming Phase 3 trial. Additionally, RAD101 has received FDA Fast Track Designation, indicating its potential importance in U.S. clinical settings.

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POSITIVE FACTORS

  • Partnership with Siemens Healthineers ensures reliable supply of RAD101.
  • Interim data shows 90% concordance with MRI for brain metastases imaging.
  • FDA Fast Track Designation for distinguishing recurrent disease enhances potential.
  • Positive trends observed in sensitivity and specificity based on initial patient data.

Full Press Release Details

Theranostics and Siemens Healthineers Sign Clinical Supply Agreement for RAD101 in the U.S.
Data from the interim analysis in Phase 2b trial
of RAD101 showed significant and selective tumor uptake in brain metastases,
with 90% concordance (Primary Endpoint) with MRI.
Partnership ensures sufficient supply of RAD
101 in Phase 3 registrational trial in the U.S.
Sydney, Australia. - 7 April 2026 - Radiopharm Theranostics
(ASX:RAD, "Radiopharm" or the "Company"), a clinical-stage biopharmaceutical company focused on developing innovative
oncology radiopharmaceuticals for areas of high unmet medical need, and Siemens Healthineers, today announced the signing of a supply
agreement in which Siemens Healthineers will radiolabel and distribute RAD101 with Fluorine-18 (18F). RAD101 is Radiopharm's
novel imaging small molecule targeting fatty acid synthase (FASN) radiolabelled with Fluorine-18 for the diagnosis of suspected recurrent
brain metastases from solid tumors of different origins.
"This partnership marks a milestone for Radiopharm, as we bring
RAD101 closer to improving diagnostic precision for brain metastases," said Riccardo Canevari, CEO and Managing Director of Radiopharm
Theranostics. "We have made considerable progress advancing RAD101 through the clinic, and the second interim analysis showed 90%
(18/20) of the patients dosed with RAD101 achieved concordance between PET imaging and MRI (the primary endpoint). The results showed
significant and selective tumor uptake in the brain metastases. Images confirm metabolic activity in brain metastases compared to equivocal
MRI findings. In addition, the first five patients with evaluable six-month follow-up and/or biopsy data show a positive trend for sensitivity
and specificity (the secondary objectives). This partnership ensures our supply of 18F-labeled RAD101 in the U.S. for the initiation
of the multi-center global Phase 3 registrational trial following our readout of topline data in the Phase 2b trial in the first half
The company has received U.S. Food and Drug Administration (FDA)
Fast Track Designation to distinguish between recurrent disease and the treatment effect of brain metastases originating from solid tumors
of different origins, including leptomeningeal disease.
Under the terms of the agreement, Siemens Healthineers will manufacture
and distribute doses of 18F-labeled RAD101 to support Radiopharm's upcoming Phase 3 registrational trial in the U.S.
"As the leader in PET imaging solutions, we are pleased to partner
with Radiopharm Theranostics to provide our reliable and specialized manufacturing capabilities," said Barry Scott, Head of Radiopharma
at Siemens Healthineers. "With our large national network of radiopharmacies in the U.S., we are uniquely qualified and well-equipped
to deliver RAD101 as well as other novel PET biomarkers to assist in the fight against challenging diseases such as brain metastases,
a condition that more than 300,000 people are diagnosed with in the U.S. each year."
Radiopharm Theranostics Limited
Suite 1, Level 3, 62 Lygon Street, Carlton South VIC 3053 Australia
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 five Phase 1 trials in a variety of solid tumor cancers including lung, breast, and brain metastases. Learn more at radiopharmtheranostics.com.
Authorised on behalf of the Radiopharm Theranostics board of directors by Chairman Paul Hopper.
For more information:
CEO & Managing Director
Precision AQ (Formerly Stern IR)
Radiopharm Theranostics Limited
Suite 1, Level 3, 62 Lygon Street, Carlton South VIC 3053 Australia

Frequently Asked Questions

What was the primary endpoint of the RAD101 trial?

The primary endpoint showed 90% concordance between PET imaging and MRI.

What is the purpose of RAD101?

RAD101 is designed for diagnosing suspected recurrent brain metastases.

Who partnered with Radiopharm for RAD101?

Siemens Healthineers partnered with Radiopharm to supply RAD101.

What designation did RAD101 receive from the FDA?

RAD101 received FDA Fast Track Designation to distinguish recurrent disease.

How many people are diagnosed with brain metastases in the U.S. annually?

More than 300,000 people are diagnosed with brain metastases each year.

Last updated: Apr 7, 2026