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First Patient Dosed in Clinical Study of TLX250-CDx in Bladder Cancer

MELBOURNE, Australia, June 22, 2021 (GLOBE NEWSWIRE) — Telix Pharmaceuticals Limited (ASX: TLX, ‘Telix’, the ‘Company’) today announces that a first patient has been dosed in a Phase I study of TLX250-CDx (89Zr-DFO-girentuximab) in patients with urothelial carcinoma or bladder cancer at Fiona Stanley Hospital in Perth, Western Australia.

The objective of the ZiP-UP (Zirconium-girentuximab PET in Urothelial Cancer Patients) study is to evaluate the feasibility of using TLX250-CDx PET/CT1 in the detection of localised and metastatic urothelial carcinoma or bladder cancer. Carbonic anhydrase IX (CA9) is a target that is over-expressed in many solid tumours, including urologic malignancies. ZiP-UP is an investigator-led study conducted by Professor Dickon Hayne at the Fiona Stanley Hospital in Perth, Australia with the goal of evaluating how CA9 imaging can be utilised for cancer diagnosis and staging, and to develop a deeper understanding of the utility of CA9 as a therapeutic target in this patient population. The trial will recruit 20 patients over 12 months: ten patients with known metastatic urothelial carcinoma or bladder cancer; and ten patients that require primary staging of localised urothelial carcinoma or bladder cancer.

ZiP-UP is the first in a series of studies that will harness TLX250-CDx to evaluate CA9 expression in cancers other than renal cancer, currently the focus of the ZIRCON (imaging) and STARLITE (therapy) studies. Other collaborative studies are in development for ovarian, triple negative breast, colorectal, head and neck, lung, and pancreatic cancers.

Principal Investigator for the ZiP-UP study, Professor Dickon Hayne stated, “In a cancer where outcomes are worsening throughout Australia, better staging and therapy planning are absolutely essential. We are therefore pleased to have dosed a first patient in this important diagnostic study, which has potential to extend into therapy via the ‘theranostic’ companion investigational asset, TLX250 (177Lu-DOTA-girentuximab).”

Telix CEO, Dr Christian Behrenbruch added, “We are pleased that a first patient has been dosed in this study exploring the clinical utility of TLX250-CDx to image other cancers, beyond renal cancer, and in indications where conventional imaging has limitations. This candidate has been granted Breakthrough Therapy designation by the US FDA for renal cancer imaging and therefore it is meaningful to test the potential of CA9 targeting in other cancers with the goal of rapid indication expansion beyond the initial kidney cancer application. We wish to express our gratitude to Professor Dickon Hayne and his clinical team, as well as the patients that will contribute to the study.”

About Bladder Cancer and Urothelial Carcinoma

Bladder cancer is the sixth most commonly occurring cancer in men, and the tenth most common cancer overall worldwide.2 In 2020, 573,278 people worldwide were diagnosed with bladder cancer and 212,536 people died from their disease.3 Urothelial carcinoma (or UCC) accounts for ~90% of all bladder cancers. UCC also accounts for 10% to 15% of kidney cancers diagnosed in adults.4

About TLX250-CDx

TLX250-CDx (89Zr-girentuximab) is being developed by Telix for the purpose of determining whether “indeterminate renal masses”, typically identified based on CT or MRI imaging, are either clear cell renal cell cancer (ccRCC) or non-ccRCC, using Positron Emission Tomography (PET) imaging. Girentuximab is a monoclonal antibody that targets carbonic anhydrase IX (CAIX), a cell surface target that is highly expressed in several human cancers including renal, lung and oesophageal cancers. In July 2020, the U.S. Food and Drug Administration (FDA) granted Breakthrough Therapy (BT) designation5 for TLX250-CDx, reflecting the significant unmet clinical need to improve the diagnosis and staging of ccRCC, the most common and aggressive form of kidney cancer.

About Telix Pharmaceuticals Limited

Telix is a biopharmaceutical company focused on the development of diagnostic and therapeutic products using Molecularly Targeted Radiation (MTR). Telix is headquartered in Melbourne, Australia with international operations in Belgium, Japan, and the United States. Telix is developing a portfolio of clinical-stage products that address significant unmet medical need in oncology and rare diseases. Telix is listed on the Australian Securities Exchange (ASX: TLX). For more information visit www.telixpharma.com and follow Telix on Twitter (@TelixPharma) and LinkedIn.

Telix Corporate Contact                 Telix Corporate Communications
     
Dr. Christian Behrenbruch
Telix Pharmaceuticals Limited
Managing Director and CEO
Email: [email protected]
  Dr. Stewart Holmstrom
Telix Pharmaceuticals Limited
Director of Corporate Communications
Email: [email protected]
     

_______________
1 Positron emission tomography/computed tomography
2 World Cancer Research Fund (WCRF).
3 GLOBOCAN.
4 American Society of Clinical Oncology (ASCO).
5 ASX disclosure 1/07/20.

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