The frequencies of cytogenetic aberrations in hyperdiploid versus nonhyperdiploid patients in the AL ± MM and MGUS/MM I entities. Statistical significance was reached for the inverse association of hyperdiploidy with t(11;14) in both AL ± MM I (P < .001) and MGUS/MM I (P < .001) as well as for the association of hyperdiploidy with gain of 1q21 in AL ± MM I (P = .02).