Recent evidence suggests an association of Arg388 single nucleotide polymorphism (SNP) in the fibroblast growth factor receptor 4 (FGFR4) gene and outcome in node-positive (N+) breast cancer. For the first time, we address the clinical relevance of this SNP, FGFR4 expression, and HER2 regarding outcome and adjuvant therapy response in a representative breast cancer cohort (n=372). In N+ but not N0 patients, FGFR4Arg388 is significantly associated with poor prognosis. This seems to be attributable to poorer response to adjuvant systemic therapy as reflected in significantly shorter survival and a significant interaction in a multivariate proportional hazards model with Arg388 carriers having only about half as much benefit from adjuvant systemic therapy as wild-type carriers. FGFR4Arg388 seems to be a marker for breast cancer progression in patients with adjuvant systemic therapy, and thus may indicate therapy resistance.
«Recent evidence suggests an association of Arg388 single nucleotide polymorphism (SNP) in the fibroblast growth factor receptor 4 (FGFR4) gene and outcome in node-positive (N+) breast cancer. For the first time, we address the clinical relevance of this SNP, FGFR4 expression, and HER2 regarding outcome and adjuvant therapy response in a representative breast cancer cohort (n=372). In N+ but not N0 patients, FGFR4Arg388 is significantly associated with poor prognosis. This seems to be attributabl...
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