This multiple ascending dose study is anticipated to enroll 5 cohorts (small groups). Cohorts 1 to 4 will be conducted as a double-blind (neither investigator nor participant knows which treatment the participant receives), randomized (participants are assigned different treatments based on chance), placebo-controlled (placebo is an inactive substance that is compared with a drug to test whether the drug has a real effect in a clinical trial) study. Cohort 5 will be performed as an open-label study (all people know the identity of the intervention), using a recently made available solid dose formulation of JNJ-54861911.