Evaluation of the Interaction of Amino Acid Infusion on 177 Lu-Dotatate Pharmacokinetics in Patients with Gastroenteropancreatic Neuroendocrine Tumors

Background and Objective 177Lu-Dotatate is a radio-labeled analog of somatostatin used in the treatment of somatostatin receptor-positive gastroenteropancreatic neuroendocrine tumors. In order to prevent nephrotoxic effects of 177Lu-Dotatate a co-infusion of amino acids (AA) is administered, resulting in a decrease in tubular renal reabsorption of 177Lu-Dotatate. This study aimed to quantify the impact of AA co-infusion on the pharmacokinetics of 177Lu-Dotatate in cancer patients and to evaluate its relationship with toxicity during the first treatment cycle (C1).