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[Relation of GSTM1 Polymorphism with Leukemia]
Juan Li1, Jun-Fang Zhu1, Wei Zhang1
1Centre Laboratory, The First Hospital of Lanzhou University, Lanzhou 730000,Gansu Province, China.
Objective:
To investigate the relation of GSTM1 polymorphism in leukemia patients with therapeutic efficacy and the main biological characteristics.
Methods:
The GSTM1 genotypes were detected by nested PCR; the remission rate after 1 course of treatment and main biological characteristics at occurrence of leukemia were compared between AL patients with different GSTM1 genotypes, and their relation was analyzed.
Results:
The remission rate and partial remission rate after 1 course of treatment in patients with GSTM1-undeleted genotype were no significantly different from those in patients with GSTM1 null genotype (χ2=0.290, P>0.05). The stratification analysis showed that GSTM1 null genotype was not related with age, sex, WBC count, Hb level, plt count at initial diagnosis and spleen enlargenent or no(P>0.05). The comparison of AML and ALL with GSTM1 null genotype by Log-rank showed that the survival rate was no statistically different between AML and ALL patients(χ2=2.043, P>0.05), while the LDH level in serum of patients with GSTM1-undeleted genotype at initial diagnosis was statistically different from that in patients with GSTM1 null genotype (P=0.001).
Conclusion:
The GSTM1 genotype does not relate with remission and partial remission rates after 1 course treatment of AL patients, but relates with LDH level. GSTM1 null genotype deletion may play a role in risk of leukemia.
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