In Phase A, individuals will get unique doses and schedules of oral ABBV-744 pill to recognize safe dosing regimen. More participants is going to be enrolled at the recognized monotherapy dosign routine. In Segment B, individuals will obtain oral ruxolitinib and ABBV-744 are going to be offered as "insert-on" therapy. https://abbv-744forsmallcelllungc01346.dailyblogzz.com/32582153/considerations-to-know-about-is-abbv-744-effective-for-hematologic-cancers