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The real-world use of regorafenib for metastatic colorectal cancer: multicentre analysis of treatment pattern and outcomes in Hong Kong

Abstract

Purpose of the study To evaluate the benefits and tolerability of regorafenib in the real-world setting, we performed a multicentre analysis in Hong Kong.

Study design Individual patient data were retrieved from three leading oncology centres in Hong Kong for analyses. All patients with metastatic colorectal cancer (mCRC) treated with regorafenib after failure of all standard systemic options were included.

Results From July 2013 to December 2015, 45 consecutive patients treated with regorafenib for mCRC were analysed. The median age was 63. Twenty patients were started at 160 mg, while the other 25 patients were started at a lower dose. The median progression-free survival was 15.6 weeks (95% CI 13.1 to 18.1 weeks) and the median overall survival was 30.4 weeks (95% CI 16.6 to 44.3 weeks). Among the 31 evaluable patients, only 1 patient (3.2%) achieved partial response and another 10 patients (32.3%) had stable disease. The commonest grade 3 non-haematological adverse event (AE) was hand–foot skin reaction (26.7%) and the commonest grade 3 or 4 haematological AE was anaemia (8.9%). Notably, patients who were started on a lower dose of regorafenib had significantly lower risk of grade 3 treatment-emergent AEs. Overall, 78.3% of the patients had dose reduction during the first and second cycles. Patients older than 65 years were more likely to experience cycle suspension and require dose reduction.

Conclusions Our study confirmed the efficacy and tolerability of regorafenib in the real-world setting. It also suggested that individualised dosing of regorafenib in patients with mCRC might result in better clinical outcomes.

  • refractory
  • regorafenib
  • individualized medicine
  • metastatic colorectal cancer

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