AZD4144

This study will enroll adults aged 18 to 80 years diagnosed with sepsis due to a suspected or confirmed bacterial infection, within 7 days of being admitted to the hospital, and who have also developed acute kidney injury within 72 hours of the onset of sepsis. Eligible participants will be randomly assigned to receive either AZD4144 or a placebo intravenously once daily for the number of days specified in the CSP. During this Treatment Period, participants will undergo daily safety monitoring, as well as blood and urine sample collection and other assessments. After the Treatment Period, participants will continue to be monitored for safety and other assessments during each additional day they remain hospitalized (if applicable) as well as during up to 2 follow up visits after discharge. The main goal is to compare specific kidney function measurements between those participants receiving AZD4144 and those receiving the placebo.