%0 Journal Article %T Proteins Involved in HER2 Signalling Pathway, Their Relations and Influence on Metastasis-Free Survival in HER2-Positive Breast Cancer Patients Treated with Trastuzumab in Adjuvant Setting %A Agnieszka Adamczyk %A Agnieszka Harazin-Lechowska %A Aleksandra Ambicka %A Aleksandra Grela-Wojewoda %A Anna Janecka %A Anna Kruczak %A Ida Cedrych %A Janusz Ry£¿ %A Joanna Niemiec %A Kaja Majchrzyk %A Ma£¿gorzata Domaga£¿a-Haduch %J Journal of Cancer %D 2017 %I Ivyspring International Publisher %R 10.7150/jca.16239 %X Aim: Resistance to trastuzumab (which is a standard therapy for breast cancer patients with HER2 overexpression) is associated with higher risk of progression or cancer death, and might be related to activation of signalling cascades (PI3K/AKT/mTOR, Ras/Raf/MAPK) and decreased level of their inhibitors. %K HER2-overexpressing breast cancer %K PTEN %K HER3 %K MUC4 %K PIK3CA mutations. %U http://www.jcancer.org/v08p0131.htm