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US FDA declines to approve Unicycive’s drug to treat elevated phosphate levels in dialysis patients

By Thomson Reuters Jun 30, 2026 | 6:12 AM

June 30 (Reuters) – Uniycive Therapeutics said on Tuesday the U.S. Food and Drug Administration ​had declined to approve ‌its drug to treat elevated phosphate levels in chronic kidney disease patients on dialysis, citing deficiencies at a ‌third-party ​manufacturing facility.

Shares of ⁠the company were ⁠down over 36% in premarket trading.

This marks yet another setback for the company, which was ​attempting to bring the drug, oxylanthanum carbonate, a convenient ⁠alternative for patients ⁠suffering from a complication ​known as hyperphosphatemia in chronic ​kidney disease.

The regulator in its so-called ‌complete response letter said there were no concerns about the drug’s safety or effectiveness ⁠and did not request additional clinical data.

High phosphate levels are common in patients ⁠with ‌chronic kidney disease and ⁠are linked to higher ​risks ‌of hospitalization and death.

The ​current treatment ⁠landscape for hyperphosphatemia in chronic kidney disease includes Sanofi’s Renvela and Akebia’s Auryxia.

(Reporting by Padmanabhan Ananthan in Bengaluru; Editing by ​Shinjini Ganguli)