XORTX Submits a New Patent for the Treatment of Chronic Kidney Disease - Seite 2

Dr. Allen Davidoff, CEO of XORTX, commented, “The Bridging Pharmacokinetic Study reported this year provided a wealth of clinical data regarding the potential substantive benefit of the novel formulations of the xanthine inhibitor class of drugs. Analysis of this data set, the use of in silico based pharmacokinetic modeling of data from the XRX-OXY-101 clinical trial, and further innovation, resulted in a deeper understanding of how to address the challenges of dosing in progressing kidney disease. This patent application is intended to claim new opportunities to enhance how the xanthine oxidase inhibitor class of drugs may be dosed in the future. Importantly, how to further improve the safe and effective administration of this class of drugs, including oxypurinol.”

About the XRx-008 program

Oxypurinol is a purine based XOI with important pharmacologic characteristics ideal for administration to individuals with ADPKD. Key pharmacologic attributes include:

1/ the ability to act in the circulation, kidney and cardiovascular tissue and inhibit the production of uric acid and so attenuate the mechanism of injury and accelerating effect of XO on progressing diseases.

2/ XORTX’s proprietary formulation of oxypurinol, XORLO, provides substantially increased absorption of oxypurinol. Metabolism of oxypurinol is minimal and it is eliminated by the kidneys unchanged. This approach provides an effective, well tolerated drug with an extensive clinical safety experience suggesting the Company’s XRx-008 program has the capacity to provide superior XOI to slow the accelerating decline kidney function in patients ADPKD with coexistent hyperuricemia.

About ADPKD

ADPKD is a rare disease that affects more that 10 million individuals worldwide.^1,2 ADPKD is typically diagnosed based upon expansion of fluid-filled cysts in the kidneys. Over time, the increasing number and size of cysts can contribute to structural and functional changes to kidneys and is frequently accompanied by chronic pain which is a common problem for patients with ADPKD.³ Expansion of cysts is thought to compress healthy functioning tissue surrounding the cysts and contribute to further loss of kidney function, fibrosis, impaired nutrient exchange and impaired kidney function, accompanied later by end-stage renal disease.¹ For individuals with progressing ADPKD, treatment recommendations include anti-hypertensive treatment, dietary restrictions, and, for a limited percentage of suitable patients, pharmacotherapy.⁴ New, more broadly applicable therapies to effectively slow decline of kidney function in ADPKD are needed.