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Sebio, A.; Stintzing, S.; Heinemann, V.; Sunakawa, Y.; Zhang, W.; Ichikawa, W.; Tsuji, A.; Takahashi, T.; Parek, A.; Yang, D.; Cao, S.; Ning, Y.; Stremitzer, S.; Matsusaka, S.; Okazaki, S.; Barzi, A.; Berger, M. D.; Lenz, H-J (2018): A genetic variant in Rassf1a predicts outcome in mCRC patients treated with cetuximab plus chemotherapy: results from FIRE-3 and JACCRO 05 and 06 trials. In: Pharmacogenomics Journal, Vol. 18, No. 1: pp. 43-48
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The Hippo pathway is involved in colorectal cancer (CRC) development and progression. The Hippo regulator Rassf1a is also involved in the Ras signaling cascade. In this work, we tested single nucleotide polymorphisms within Hippo components and their association with outcome in CRC patients treated with cetuximab. Two cohorts treated with cetuximab plus chemotherapy were evaluated (198 RAS wild-type (WT) patients treated with first-line FOLFIRI plus Cetuximab within the FIRE-3 trial and 67 Ras WT patients treated either with first-line mFOLFOX6 or SOX plus Cetuximab). In these two populations, Rassf1a rs2236947 was associated with overall survival (OS), as patients with a CC genotype had significantly longer OS compared with those with CA or AA genotypes. This association was stronger in patients with left-side CRC (hazard ratio (HR): 1.79 (1.01-3.14);P = 0.044 and HR: 2.83 (1.14-7.03);P = 0.025, for Fire 3 and JACCRO cohorts, respectively). Rassf1a rs2236947 is a promising biomarker for patients treated with cetuximab plus chemotherapy.