ABSTRACT
Purpose@#Circulating tumor DNA (ctDNA) is an attractive source for liquid biopsy to understand molecular phenotypes of a tumor non-invasively, which is also expected to be both a diagnostic and prognostic marker. PIK3CA and KRAS are among the most frequently mutated genes in epithelial ovarian cancer (EOC). In addition, their hotspot mutations have already been identified and are ready for a highly sensitive analysis. Our aim is to clarify the significance of PIK3CA and KRAS mutations in the plasma of EOC patients as tumor-informed ctDNA. @*Methods@#We screened 306 patients with ovarian tumors for somatic PIK3CA or KRAS mutations. A total of 85 EOC patients had somatic PIK3CA and/or KRAS mutations, and the corresponding mutations were subsequently analyzed using a droplet digital polymerase chain reaction in their plasma. @*Results@#The detection rates for ctDNA were 27% in EOC patients. Advanced stage and positive peritoneal cytology were associated with higher frequency of ctDNA detection. Preoperative ctDNA detection was found to be an indicator of outcomes, and multivariate analysis revealed that ctDNA remained an independent risk factor for recurrence (p=0.010). Moreover, we assessed the mutation frequency in matched plasma before surgery and at recurrence from 17 patients, and found six patients had higher mutation rates in cell-free DNA at recurrence compared to that at primary diagnosis. @*Conclusion@#The presence of ctDNA at diagnosis was an indicator for recurrence, which suggests potential tumor spread even when tumors were localized at the time of diagnosis.
ABSTRACT
<p>Purpose: In Kasugai City Hospital, we have introduced palliative care clinical pathway with a focus on decision-making support on the intention of recuperation location in addition to symptom relief. In this study, it is intended to explore the factors that make it difficult to home discharge of cancer inpatients with the intention of discharged home on the basis of the information on the clinical pathway. Methods: The subject patients were cancer inpatients who had expressed the intention of the discharge to the home during period from June 2014 to August 2015. We examined the medical records of the target patient retrospectively. Logistic regression analysis was performed in order to clarify the factors that make it difficult to home discharge. Results: Of 43 patients, 25 patients (58.1%) were discharged from the hospital to the home. As a result of logistic regression analysis (multivariate analysis), delirium and living alone have been extracted as the predictive factors that makes it difficult to home discharge. Conclusion: Delirium and living alone have been suggested as the factors that makes it difficult to home discharge of patients who wish to home discharge. Early detection and early treatment of delirium are important, and early collaboration between the hospital discharge support department and palliative care team for the living alone patient is also necessary.</p>