Pharmacokinetics and Metabolism of 14 Carbon [14C]-GSK3640254

This is an open-label, single-center, single group, non-randomized, two-period, single sequence, mass balance study which will enroll 6 healthy male participants. This study will assess the pharmacokinetics, balance/excretion, and metabolism of GSK3640254 in humans using \[14C\]-radiolabeled drug substance administered as an intravenous (IV) infusion and via the oral route. The study will also provide an assessment of GSK3640254 absorption, metabolism and excretion following administration of a \[14C\]-radiolabeled oral suspension. Each participant will be involved in the study for up to 10 weeks which will include a screening period, two treatment periods (treatment Periods 1 and 2) separated by a washout of at least 13 days between oral doses, and a follow-up visit 7-14 days after the last assessment in treatment Period 2.