Symptom clusters in palliative-stage cancer correlate with proinflammatory cytokine cluster.

BACKGROUND: Patients with palliative-stage cancer often suffer from a variety of debilitating symptoms which have been shown to appear in clusters. It is suggested that cytokines cause many such symptoms, and elevated cytokine production has been shown to correlate with symptoms. However, symptom clusters have not been thoroughly analyzed in relation to cytokine clusters. The aim of the present study was to identify symptom clusters and cytokine clusters in Swedish cancer patients, and to investigate correlations between the identified symptom clusters and cytokine clusters. METHODS: The EORTC Quality of Life Questionnaire Core 15 Palliative Care questionnaire was completed by 110 cancer patients, with blood samples taken at two time points four weeks apart. Meso scale discovery (MSD) assays were used to analyze 23 cytokines. Statistical analysis was performed using principal component analysis (PCA) of symptoms and cytokines, followed by correlation analysis of the obtained clusters. RESULTS: Three symptom clusters were identified: (I) pain-sleep disorder, (II) gastro-intestinal-fatigue, (III) physical functioning. The cytokines were divided into three clusters that can be characterized as (I) pro-tumorigenic, (II) cell-mediated immune response and (III) proinflammatory. At the second time point, a fourth cytokine cluster was isolated (IV) immunostimulation. Correlations were found at both time points between the proinflammatory cytokine cluster and the physical functioning symptom cluster, and at the week four time point between the proinflammatory cytokine cluster and the gastro-intestinal-fatigue symptom cluster. CONCLUSIONS: We show a correlation between symptom clusters and the proinflammatory cytokine cluster. Proinflammatory cytokines are known to cause symptoms that resemble palliative cancer symptoms. Increased knowledge of biochemical processes and their effect on patients' wellbeing may give clues for counteracting symptoms that affect quality of life (QOL) in palliative cancer care.

Many days at home during neutropenia after allogeneic hematopoietic stem cell transplantation correlates with low incidence of acute graft-versus-host disease.

Patients are isolated in the hospital during the neutropenic phase after allogeneic hematopoietic stem cell transplantation. We challenged this by allowing patients to be treated at home. A nurse from the unit visited and checked the patient. One hundred forty-six patients treated at home were compared with matched hospital control subjects. Oral intake was intensified from September 2006 and improved (P = .002). We compared 4 groups: home care and control subjects before and after September 2006. The cumulative incidence of acute graft-versus-host disease (GVHD) of grades II to IV was 15% in the "old" home care group, which was significantly lower than that of 32% to 44% in the other groups (P < .03). Transplantation-related mortality, chronic GVHD, and relapse were similar in the groups. The "new" home care patients spent fewer days at home (P = .002). In multivariate analysis, GVHD of grades 0 to I was associated with home care (hazard ratio [HR], 2.46; P = .02) and with days spent at home (HR, .92; P = .005) but not with oral nutrition (HR, .98; P = .13). Five-year survival was 61% in the home care group as compared with 49% in the control subjects (P = .07). Home care is safe. Home care and many days spent at home were correlated with a low risk of acute GVHD.