At least one model from the University of Washington’s Institute for Health Metrics and Evaluation estimates that at this time, 73 percent of Americans are immune to Omicron, and it could rise to 80 percent by mid-March.

The Food and Drug Administration on Aug. 23 approved Cara Therapeutics’ drug to treat moderate-to-severe itching in patients with chronic kidney disease undergoing dialysis, making Korsuva the first therapy for the ailment in the United States.

After receiving a Complete Response Letter (CRL) from the U.S. Food and Drug Administration for the New Drug Application for tenapanor for control of serum phosphorus in adults with chronic kidney disease on dialysis, Waltham, Mass.-based Ardelyx is restructuring to save money.

Shares of Cara Therapeutics were up in trading after the company struck a licensing agreement worth up to $290 million with Switzerland’s Vifor Pharma for the commercialization of a treatment for severe itching associated with chronic kidney disease.

Akebia Therapeutics’ investigational drug vadadustat hit the mark in the first of two Phase III trials in chronic kidney disease (CKD) patients who are on dialysis. In premarket trading, shares of Akebia were up more than 21 percent to $10.55.

Ardelyx Inc.’s experimental medicine tenapanor showed promise in a late-stage study as a standalone therapy to reduce elevated blood phosphate levels in patients with chronic kidney disease (CKD).

Ardelyx’s Phase III AMPLIFY study of tenapanor achieved the clinical trial’s primary endpoint, as well as all key secondary endpoints, in treating patients with chronic kidney disease (CKD).