| Summary: | 1. Mono- or sequential therapy with aromatase inhibitors (AI) increases disease-free survival (DFS) compared to tamoxifen (TAM). Prolonged AI therapy after five years of TAM increases DFS compared to placebo.2. Monotherapy with AI increases overall survival (OS), sequential or prolonged AI therapy however, does not obviously increase OS.3. AI therapy increases the risk for fractures compared to TAM, but decreases the risk for uterine cancer and deep vein thrombosis.4. No significant differences between AI and TAM are seen regarding side effects on the heart and brain vasculatures, or death without recurrence.5. Scientific evidence is insufficient to be able to say if there are any clinically relevant differences between AI and TAM regarding their effect on cognitive function (thought and memory function).6. No significant differences between AI and TAM have been seen regarding health-related quality of life.7. The presence of oestrogen receptors (ER) in a tumour is predictive of a positive result from hormone treatment whether it be with AI or with TAM. However the difference in effect between AI and TAM can not be predicted by ER. The presence of progesterone receptors (PgR), proliferation indicators, or overexpression of HER2 have no predictive value regarding success of treatment with AI versus TAM.
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