RecruitingPhase 3Drug trialEffect of Trilaciclib in the Prevention of Myelosupression in Subjects With Limited-stage Small Cell Lung CancerThe goal of this clinical trial is to compare the efficacy and safety of trilaciclib versus placebo in subjects with limited stage small cell lung cancer. The main question it aims to answer is: Does trilaciclib have a myeloprotective effect in subject with limited stage small cell lung cancer? Participants will be randomised to receive either trilaciclib or placebo.