1979年10月在比利时召开白血病染色体第二次国际专题会议。会议对急性早幼粒性白血病和白血病前期综合征的三组病人的临床和细胞遗传学资料进行了讨论和评价。会议肯定8号染色体和21号染色体易位t(8; The second international conference on leukemia chromosomes was held in Belgium in October 1979. The clinical and cytogenetic data of the three groups of patients with acute promyelocytic leukemia and pre-leukemic syndrome were discussed and evaluated. The meeting confirmed chromosome 8 and chromosome 21 translocation t (8;