A Study of JNJ-64619178, an Inhibitor of PRMT5 in Participants With Advanced Solid Tumors, NHL, and Lower Risk MDS

The study is designed to determine the maximum tolerated dose (MTD) of JNJ-64619178, and to select a dose(s) and regimen(s) that may be used in future clinical development. Study evaluations will include safety, pharmacokinetics, biomarkers and efficacy evaluations (Disease Assessments). Adverse events will be evaluated throughout the study. The study is divided into 4 periods: a screening phase, a pharmacokinetic run-in phase, a treatment phase, and a post treatment follow-up phase. An end-of-treatment visit will be completed less than or equal (\<=) 30 days (+7 days) after the last dose of study drug or prior to the start of a new anticancer therapy, whichever comes first.