Table 4. Correlation between ER positivity and major clinical responses (CR+PR) to therapy.

Responses	ER positive (27/41 patients)	ER negative (14/41 patients)
CR+PR (22/41 patients)	19/27 patients (70%)	3/14 patients (21%)
SD+PD (19/41 patients)	8/27 patients (30%)	11/14 patients (79%)

Pearson's χ² test: P=0.01.