In September 2019, the French High Authority for Health released an assessment report for analysis on DNA chips (ACPA) in different types of oncological conditions to determine its place in comparison with more conventionally used techniques. The ACPA allows to detect a large number of copy number of variations at the whole genome level, ploidy abnormalities, and heterozygosity losses; it is of interest as a cytogenetic technique with some specific advantages among existing technologies.