{"groups":[{"description":"Phase I Dose Level (DL) 1 Topotecan 1mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 140mg/m\\^2 IV on day 5","id":"FG000","title":"Phase I DL1 Topotecan 1mg/m^2 Intravenous (IV) (Days 1-5); VX970 (M6620) 140mg/m^2 IV on Day 5"},{"description":"Phase I Dose Level (DL) 2 Topotecan 1mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 140mg/m\\^2 IV on day 2, 5","id":"FG001","title":"Phase I DL2 Topotecan 1mg/m^2 Intravenous (IV) (Days 1-5); VX970 (M6620) 140mg/m^2 IV on Day 2, 5"},{"description":"Phase I Dose Level (DL) 3 Topotecan 1.25mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 140mg/m\\^2 IV on day 2, 5","id":"FG002","title":"Phase I DL3 Topotecan 1.25mg/m^2 Intravenous(IV) (Days 1-5); VX970 (M6620) 140mg/m^2 IV on Day 2, 5"},{"description":"Phase I Dose Level (DL) 4 Topotecan 1.25mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 210mg/m\\^2 IV on day 2, 5","id":"FG003","title":"Phase I DL4 Topotecan 1.25mg/m^2 Intravenous(IV) (Days 1-5); VX970 (M6620) 210mg/m^2 IV on Day 2, 5"},{"description":"Phase II Dose Level (DL) 4 Topotecan 1.25mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 210mg/m\\^2 IV on day 2, 5 Maximum Tolerated Dose/ Recommended Phase II Dose.\n\n26 participants with small cell lung cancer (SCLC) and 15 with extrapulmonary small cell cancer (EPSCC) are included in this Arm/Group.","id":"FG004","title":"Phase II DL4 Topotecan 1.25mg/m^2; VX970 (M6620) 210mg/m^2 Recommended Phase II Dose"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"6"},{"groupId":"FG001","numSubjects":"6"},{"groupId":"FG002","numSubjects":"3"},{"groupId":"FG003","numSubjects":"6"},{"groupId":"FG004","numSubjects":"0"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"6"},{"groupId":"FG001","numSubjects":"6"},{"groupId":"FG002","numSubjects":"3"},{"groupId":"FG003","numSubjects":"6"},{"groupId":"FG004","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Phase I Dose Escalation"},{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"1"}],"type":"Unable to scan/restage participant"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"41"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"40"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"1"}],"type":"NOT COMPLETED"}],"title":"Dose Expansion"}],"preAssignmentDetails":"No participants were treated on Dose Level -1, Topotecan 1mg/m\\^2 intravenous (IV) (days 1-5); VX970 (M6620) 105mg/m\\^2 IV on day 5."}