DDInter1016 DDInter1658
Lactitol, also known as 4-β-D-galactopyranosyl-D-glucitol, is a sugar alcohol synthesized from [lactose]. It is used in food manufacturing as a nutritive sweetener and is approximately 35% as sweet as table sugar (i.e. [sucrose]). Clinically, lactitol has been investigated for use as an osmotic laxative and, along with other non-absorbable disaccharides such as [lactulose], in the treatment of hepatic encephalopathy in patients with cirrhosis.[A190915,A190918] Pizensy, an oral lactitol powder for solution, was approved by the FDA for use in chronic idiopathic constipation in February 2020.
Selpercatinib is a kinase inhibitor with enhanced specificity for RET tyrosine kinase receptors (RTKs) over other RTK classes.[A202055, A202052, L13604] Enhanced RET (Rearranged during transfection) oncogene expression is a hallmark of many cancers. Although multikinase inhibitors, including [cabozantinib], [ponatinib], [sorafenib], [sunitinib], and [vandetanib], have shown efficacy in RET-driven cancers, their lack of specificity is generally associated with substantial toxicity. Selpercatinib (LOXO-292) and pralsetinib (BLU-667) represent the first generation of specific RET RTK inhibitors for the treatment of RET-driven cancers.[A202049, A202055, A202052, L13604] Although selpercatinib is currently still under investigation in clinical trial NCT04211337, it was granted accelerated FDA approval on May 8, 2020, for specific RET-driven cancer indications. It is currently marketed under the brand name RETEVMO™ by Loxo Oncology Inc. Selpercatinib is also approved by the European Commission.