Fig. 6
a Hierarchical clustering showing expression values (log2 transformed) of circ_0044234, miR-135b-5p and GATA3 in different subtype of breast cancers (N = 95) relative to normal mammary tissues (N = 10). Red strips represent low relative expression and blue strips represent high relative expression. Each row shows one tumor sample, and each column demonstrates a transcript; b the negative correlation between circ_0044234 and miR-135b-5p expression levels in BC (N = 95, r = − 0.23, P.value = 0.023); c The positive correlation between circ_0044234 and GATA3 expression levels in BC (N = 95, r = 0.21, P.value = 0.041); d The negative correlation between miR-135b-5p and GATA3 expression levels in BC (N = 95, r = − 0.24, P.value = 0.02); Linear regression analysis was used to achieve the regression equation