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![Final results of a 2:1 control-case observational study using interferon beta and interleukin-2, in addition to first-line hormone therapy, in estrogen receptor-positive, endocrine-responsive metastatic breast cancer patients](https://image.oaes.cc/20a9505d-a07d-46c4-893a-ddfb02dc523c/4716.fig.1.jpg)
Figure 1. Progression-free survival correlated with hormonal therapy (survival median time of HIT 33 months (95%CI: 24-42); survival median time of HT 18 months (95%CI: 12-23)) (A). Overall survival correlated with hormonal therapy [survival median time of HIT 81 months (95%CI: 64-99); survival median time of HT 62 months (95%CI: 54-70)] (B).