Correlation between BST2 and GATA1 transcripts in non-DS blast cells. Correlation between BST2 and GATA1 transcripts determined by real-time RT-PCR in 17 non-DS AML and 14 non-DS AMkL patient samples. The nonparametric Spearman rank correlation coefficient was used to analyze the relationship between BST2 and GATA1 transcripts.