()-BAY-1251152 is primarily utilized in the field of oncology research as a potent and selective inhibitor of P-TEFb (Positive Transcription Elongation Factor b). Its application is focused on investigating the role of transcription elongation in cancer cells, particularly in understanding how the inhibition of this process can disrupt the growth and survival of malignant cells. Researchers employ ()-BAY-1251152 to study its potential in blocking the transcriptional dependencies of certain cancers, which may lead to the development of novel therapeutic strategies. Additionally, it is used in preclinical studies to evaluate its efficacy and safety profile as a potential anticancer agent, with a focus on targeting cancers that rely heavily on transcriptional regulation for progression.