Effect of increased body mass index (BMI) on time to tumour progression (TTP) in unresectable metastatic colorectal cancer (mCRC) patients treated with bevacizumab-based therapy.

Creative Commons License

Aykan N. F., Yildiz İ., Sen F., Kilic L., Keskin S., Ciftci R., ...Daha Fazla

Medical oncology (Northwood, London, England), cilt.30, sa.3, ss.679, 2013 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 3
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s12032-013-0679-4
  • Dergi Adı: Medical oncology (Northwood, London, England)
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.679
  • Anahtar Kelimeler: Colorectal cancer, Body mass index, Bevacizumab, Time to progression, ENDOTHELIAL GROWTH-FACTOR, VISCERAL FAT ACCUMULATION, III COLON-CANCER, INSULIN-RESISTANCE, RECTAL-CANCER, OBESITY, CHEMOTHERAPY, RISK, METAANALYSIS, MORTALITY
  • Acıbadem Mehmet Ali Aydınlar Üniversitesi Adresli: Hayır

Özet

High BMI is a well-known risk factor for the development and recurrence of several solid tumours, including CRC. Obesity is associated with increased levels of vascular endothelial growth factor (VEGF). Bevacizumab is the main targeted therapy for inhibiting tumour angiogenesis by blocking the VEGF/VEGF receptor pathway. Elevated VEGF in obese patients might provoke resistance to anti-VEGF therapy. We evaluated the efficacy of bevacizumab on TTP among mCRC patients through stratifying them according to their BMI. Patients with mCRC who had been treated with fluoropyrimidine-based combination chemotherapy with bevacizumab were included in the study. Patients were assigned according to their BMI before initiation of therapy (group A: BMI < 25 kg/m(2), group B: BMI >= 25 kg/m(2)). Multivariate analysis was performed to evaluate the risk of tumour progression. Between April 2007 and June 2011, 80 patients were treated with chemotherapy and bevacizumab as first-line therapy (n = 37 for group A, n = 43 for group B). Tumours in 56.3 % of the patients in group A (n = 21) and 76.3 % of the patients in group B (n = 33) progressed during a median 10-months (3-57 months) follow-up. The median TTP was 11.7 months in the group A and 6 months in the group B (p = 0.004). In a multivariate analysis, high BMI (>= 25 kg/m(2)) was associated with significantly shorter TTP (p = 0.01; HR: 4.37). High BMI among mCRC patients treated with bevacizumab is associated with shorter TTP. Further study in larger databases is warranted for confirming the negative prognostic effect of obesity during treatment with anti-VEGF agents.