RT Journal Article SR Electronic T1 Risk Factors Associated With Unplanned Acute Care in Outpatient Chemotherapy With Oral Anticancer Drugs as Monotherapy or Combination Therapy With Injectable Anticancer Drugs JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 5827 OP 5834 DO 10.21873/anticanres.15401 VO 41 IS 11 A1 KAWASUMI, KENJI A1 KAWANO, YOHEI A1 KUJIRAI, AZUSA A1 MANO, YASUNARI A1 MATSUI, REIKO A1 MAEDA-MINAMI, AYAKO A1 YAMAMOTO, YUICHIRO A1 NEGISHI, KENICHI A1 SHIMADA, SHUJI A1 YAMAGUCHI, MASAKAZU A1 NAGATA, MASASHI A1 AOYAMA, TAKAO YR 2021 UL http://ar.iiarjournals.org/content/41/11/5827.abstract AB Background/Aim: Recently, the number of patients with cancer receiving outpatient chemotherapy using oral anticancer drugs has increased, but the currently available outpatient cancer chemotherapy is not safer than that available before. The present study aimed to identify risk factors associated with unplanned acute care (UAC) requiring outpatient chemotherapy-related consultation and hospitalisation. Patients and Methods: We conducted a case– control study among 1,674 patients who received oral anticancer drug treatment either alone or in combination with injectable anticancer drugs at National Cancer Center Hospital East, Japan, between December 1, 2014, and November 30, 2015. Results: Body mass index (BMI) was identified as a risk factor for UAC during chemotherapy. Patients with a BMI of <18.5 kg/m2, classified as underweight according to the World Health Organization classification of nutritional status, had a significantly higher risk of UAC. Conclusion: A low BMI immediately before the occurrence of chemotherapy-related UAC is a risk factor for adverse effects; therefore, underweight patients need more careful monitoring and supportive care.