Cluster tree for pretherapy cytogenetic abnormalities.

Cluster analysis of associations of specific chromosome aberrations present prior to therapy. The ordinate denotes the percentage disagreement in such a way that lower clusters on the tree are more highly correlated with each other: for example, t(11q) and t(14), as well as trisomies (denoted by additions of various chromosome numbers) (add 3, add 5, add 7, add 9, add 11, add 15, add 19).