Table 1.

Division of the ALL subtypes according to the ploidy of the chromosomes affected on the basis of the 2020 International System of Cytogenetic Nomenclature classification [17,22].

Subtype of the ALL	Number of Affected Chromosomes
Near-haploidy	23–29
Low hypodiploidy	30–39
High hypodiploidy	40–44
Correct number	46
Low hyperdiploidy	47–50
High hyperdiploidy	51–57
Near-triploidy	58–80
Near-tetraploidy	81–103