Are you ER+ or ER-, HER+ or HER- ?? Oncotype gives a graded scale of risk broken up into low, intermediate, and high risk categories, whereas MammaPrint is either low or high risk. Oncotype is applicable only to estrogen receptor (ER)–positive tumors; MammaPrint can be used for both ER-positive and ER-negative tumors.Aug 25, 2016

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