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Context For patients with borderline resectable pancreatic cancer, the benefit of neoadjuvant therapy remains to be defined.Objective We did a systematic search of the literature on this topic. Methods Prospective studies where chemotherapy withor without radiotherapy was given before surgery to patients with borderline resectable cancer, were analyzed by a metaanalytical approach. Main outcome measures Primary outcome was surgical exploration and resection rates; tumorresponse, therapy-induced toxicity, and survival were secondary outcomes. Data were expressed as weighted pooledproportions with 95% confidence intervals (95% CI). Results Ten studies with 182 participants were included. Followingtreatment, 69% of patients (95% CI: 56-80%) were brought to surgery and 80% (95% CI: 66-90%) of surgically-exploredpatients were resected. Eighty-three percent (95% CI: 74-90%) of resected specimens were deemed R0 resections. Theweighted fractions of resected patients alive at 1 and 2 years were 61% (95% CI: 48-100%) and 44% (95% CI: 32-59%),respectively. At restaging following neoadjuvant therapy, weighted frequencies for complete/partial response were 16%(95% CI: 9-28%), 69% (95% CI: 60-76%) for stable disease, and 19% (95% CI: 13-25%) for progressive cancer. Treatmentrelated grade 3-4 toxicity was 32% (95% CI: 21-45%). Conclusion This meta-analysis shows that downstaging of the lesion following neoadjuvant therapies is uncommon for patients with borderline resectable pancreatic cancer. A clear benefit of this regimen could be to spare surgery to patients with progressive disease during the frame-time chemo-radiotherapy is being delivered.
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Author(s): Generoso Uomo Virginia Festa Angelo Andriulli Francesco Perri Salvatore Corrao Maurizio Koch Maria Rosaria Valvano Nicola Andriulli