Bevezetés: Közepesen differenciált (grade 2) tumorok esetén a beteg prognózisa és a terápia eredményessége e tényező alapján nem becsülhető meg biztonsággal. Célkitűzés: Vizsgálni a szerzők által leírt, kromoszomális instabilitást tükröző prognosztikus génexpressziós indexet kiegészítve további génekkel egy kiterjesztett betegcsoporton. Módszerek: Publikus adatbázisokból választottak ki kilenc cél-, valamint három kontrollgént. Ezek expresszióját valós idejű polimeráz láncreakcióval határozták meg. Az analízisben 249, formalinban fixált, paraffinba ágyazott emlőcarcinoma vizsgálatát végezték el és az eredményeiket a betegségmentes túléléssel összefüggésben elemezték. Eredmények: A gének expressziójának mértéke alapján a grade 2 carcinomák a grade 1, illetve a grade 3 tumorokhoz hasonló prognózisú csoportokra különültek el. Pusztán a FOXM1, TOP2A és CLDN4 gének együttes vizsgálatával a grade 2 daganatok magas és alacsony kockázatú alcsoportokba oszthatóak. Következtetés: Megfelelően választott kontrollgének vizsgálatával három célgén expressziója alapján a hisztológiai grade-től függetlenül elkülöníthető az emlőcarcinomák jó és rossz prognózisú csoportja. Orv. Hetil., 2013, 154, 627–632.
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