Abstract Chromosomal instability (CIN) is a hallmark of cancer and contributes to tumorigenesis tumor progression. While structural CIN (S-CIN) leads chromosome aberrations, whole (W-CIN) defined by perpetual gains or losses chromosomes during mitosis causing aneuploidy. Mitotic defects, but also abnormal DNA replication (replication stress) can lead W-CIN. However, the functional link between ...