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BackgroundAlthough peer-to-peer contact might empower patients in various ways, studies show that only a few patients actually engage in support groups. ObjectiveThe objective of our study was to explore factors that facilitate or impede engagement in face-to-face and online peer support, using the Theory of Planned Behavior. MethodsA questionnaire was completed by 679 patients being treated for arthritis, breast cancer, or fibromyalgia at two Dutch regional hospitals. ResultsOur results showed that only a minority of the patients engaged in organized forms of peer support. In total 10% (65/679) of the respondents had engaged in face-to-face meetings for patients in the past year. Only 4% (30/679) of the respondents had contact with peers via the Internet in the past year. Patients were more positive about face-to-face peer support than about online peer support (P < .001). In accordance with the Theory of Planned Behavior, having a more positive attitude (P < .01) and feeling more supported by people in the social environment (P < .001) increased the intention to participate in both kinds of peer support. In addition, perceived behavioral control (P = .01) influenced the intention to participate in online peer support. Nevertheless, the intention to engage in face-to-face and online peer support was only modestly predicted by the Theory of Planned Behavior variables (R2 = .33 for face-to-face contact and R2 = .26 for online contact). ConclusionAlthough Health 2.0 Internet technology has significantly increased opportunities for having contact with fellow patients, only a minority seem to be interested in organized forms of peer contact (either online or face-to-face). Patients seem somewhat more positive about face-to-face contact than about online contact.

Effective treatment options for patients with ovarian cancer whose disease relapses or progresses within 6 months of initial therapy are limited. In the current open-label phase II study, 112 patients whose disease relapsed during or within 6 months after completion of platinum-based therapy received the novel microtubule- targeting agent patupilone. Patupilone was well tolerated and demonstrated promising efficacy in this difficult-to-treat population. Background: Patients with ovarian cancer whose disease relapses or progresses within 6 months after frontline platinum- and taxane-containing therapy have a poor prognosis and limited treatment options. In this phase II study, the activity and safety profiles of patupilone, a novel microtubule-targeting agent, were assessed in patients with platinum-resistant or -refractory ovarian, primary fallopian tube, or primary peritoneal cancer. Patients and Methods: Patients whose disease relapsed while they were either receiving or within 6 months after completion of their most recent platinum-based therapy were given patupilone 10 mg/m2 by a 20-minute intravenous infusion once every 3 weeks (q3w). The primary study endpoint was the overall response rate (ORR), defined as the percentage of patients with a complete or partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST). Results: Patients (N=112) received a median of 4 cycles of patupilone. Median overall survival was 11.2 months. The ORR was 6.3%. Disease control according to RECIST was observed in 57 (50.9%) patients (7 [6.3%] PRs, 50 [44.6%] stable disease). Median duration of disease control was 5.4 months, whereas median progression-free survival was 2.8 months. Diarrhea, the most common adverse event (AE) regardless of relationship to study drug (55.4% grade 1/2, 25.0% grade 3/4), was predictable and generally manageable. Other AEs, including nausea, vomiting, fatigue, and peripheral neuropathy, were generally mild. Conclusion: Patupilone was well tolerated and demonstrated an encouraging disease control rate in these patients with platinum-resistant or -refractory disease; this is a challenging population with a poor prognosis. [ABSTRACT FROM AUTHOR]

Case. A patient with complete renal failure as a result of urothelial cell carcinoma-related nephrectomy of both kidneys received palliative chemotherapy with carboplatin and gemcitabine. Treatment. The patient received gemcitabine at 1,000 mg/m2 followed by carboplatin at 100 mg. Shortly after, he underwent hemodialysis. The pharmacokinetics of gemcitabine and metabolites in plasma and in peripheral blood mononuclear cells were monitored. Results. Double-sided nephrectomy and hemodialysis had no influence on gemcitabine pharmacokinetics; however, a high exposure was seen for the main metabolite, difluordeoxyuridine (dFdU) (area under the concentration-time curve, 0-51 hours, 844 μg/ml7hour). During hemodialysis, plasma concentrations of dFdU were reduced by 50%. High concentrations of intracellular phosphorylated metabolites (gemcitabine triphosphate and dFdU triphosphate) were observed: 228 pmol/106 cells and 47 pmol/106 cells, respectively. The patient tolerated the regimen poorly; adverse events included grade 4 thrombocytopenia. Conclusion. Hemodialysis effectively reduced plasma concentrations of dFdU. Furthermore, high concentrations of intracellular phosphorylated metabolites may be related to double-sided nephrectomy, resulting in poor tolerability of gemcitabine. The Oncologist 2009;14:944-948 [ABSTRACT FROM AUTHOR]

Presents a study conducted which focuses on the development of an assay which measures the frequency of T lymphocyte percursor cells, with the capabilities of suppressing the leukemic progenitor cells, in an attempt to identify the effector and target cell populations responsible for the elimination of the leukemic cells. Description of target cells in the assay; Definition of a cytogenic remission; Properties of effector cells.

Abstract: Background: Tyrosine kinase inhibitors treatment in responding chronic myeloid leukaemia (CML) patients is generally continued indefinitely. In this randomised phase II trial, we investigated whether CML patients in molecular response4.5 (MR4.5, quantitative reverse-transcription polymerase chain reaction (RQ-PCR)) after previous combination therapy with imatinib and cytarabine may discontinue imatinib treatment safely. Patients and methods: Thirty-three patients from the HOVON 51 study with an MR4.5 for at least 2 years who were still on imatinib treatment were randomised between continuation of imatinib (arm A, n =18) or discontinuation of imatinib (arm B, n =15). Results: After a median follow up of 36 months since randomisation, 3 patients (17%) in arm A and 10 patients (67%) in arm B had a molecular relapse. All 3 relapsing patients in arm A had also stopped imatinib after randomisation. All but one relapsing patient relapsed within 7 months after discontinuation of imatinib. The molecular relapse rate at 12 and 24 months after randomisation was 0% and 6% (arm A) and 53% and 67% (arm B) respectively. As-treated analysis revealed 56% and 61% relapses at 1 and 2 years since cessation in patients who discontinued imatinib, in contrast to 0% of patients who continued imatinib. All evaluable patients remained sensitive to imatinib after reinitiation and regained a molecular response. Conclusion: Our data suggest that discontinuation of imatinib is safe in patients with durable MR4.5. [ABSTRACT FROM AUTHOR]

Abstract: Background: In anthracycline-pretreated metastatic breast cancer (MBC) patients, it is unknown whether weekly single-agent docetaxel is preferable to 3-weekly docetaxel regarding its toxicity and efficacy profile. Patients and methods: In this multicenter, randomised, open-label phase III trial, 162 patients were randomised to weekly docetaxel (group A) or 3-weekly docetaxel (group B). The primary end-point was tolerability; secondary end-points were efficacy and quality of life (QoL). Results: Group A (weekly docetaxel, n =79) experienced less haematological toxicity, with just 1.3% versus 16.9% febrile neutropenia in group B (3-weekly docetaxel, n =77) (p =0.001). Not this difference, but fatigue and general malaise foremost led to more patient withdrawals in group A (24 versus 12 patients, p =0.032), less patients completing treatment (29 versus 43 patients, p =0.014) and reduced dose-intensity (15.6 versus 26mg/m2/week, 58% versus 70% of projected dose, p =0.017). As a result, 3-weekly docetaxel was related to better overall survival in multivariate analysis (hazard ratio 0.70, p =0.036), although in univariate analysis efficacy was similar in both groups. Reported QoL was similar in both groups, but less effective treatment with more general toxicity led to less completed QoL forms in group A (65.4% versus 50%, p=0.049). Conclusion: Weekly docetaxel is less well tolerated than a 3-weekly schedule, due to more non-haematological toxicity, despite less febrile neutropenia. Also, no efficacy benefits can be demonstrated for weekly docetaxel, which may even be inferior based on multivariate analysis. Therefore, a 3-weekly schedule should be preferred in the setting of MBC. [Copyright &y& Elsevier]

Background: In order to improve the molecular response rate and prevent resistance to treatment, combination therapy with different dosages of imatinib and cytarabine was studied in newly diagnosed patients with chronic myeloid leukemia in the HOVON-51 study., Design and Methods: Having reported feasibility previously, we hereby report the efficacy of escalated imatinib (200 mg, 400 mg, 600 mg or 800 mg) in combination with two cycles of intravenous cytarabine (200 mg/m(2) or 1000 mg/m(2) days 1 to 7) in 162 patients with chronic myeloid leukemia., Results: With a median follow-up of 55 months, the 5-year cumulative incidences of complete cytogenetic response, major molecular response, and complete molecular response were 89%, 71%, and 53%, respectively. A higher Sokal risk score was inversely associated with complete cytogenetic response (hazard ratio of 0.63; 95% confidence interval, 0.50-0.79, P<0.001). A higher dose of imatinib and a higher dose of cytarabine were associated with increased complete molecular response with hazard ratios of 1.60 (95% confidence interval, 0.96-2.68, P=0.07) and 1.66 (95% confidence interval, 1.02-2.72, P=0.04), respectively. Progression-free survival and overall survival rates at 5 years were 92% and 96%, respectively. Achieving a major molecular response at 1 year was associated with complete absence of progression and a probability of achieving a complete molecular response of 89%., Conclusions: The addition of intravenous cytarabine to imatinib as upfront therapy for patients with chronic myeloid leukemia is associated with a high rate of complete molecular responses (Clinicaltrials.Gov Identifier: NCT00028847).

PURPOSE To evaluate the safety, maximum tolerated dose (MTD), and pharmacokinetics of patupilone administered once every 3 weeks with proactive standardized diarrhea management in patients with resistant or refractory ovarian, fallopian, or peritoneal cancer. PATIENTS AND METHODS Patients received patupilone (6.5 to 11.0 mg/m(2)) every 3 weeks via 20-minute infusion. Adverse events, dose-limiting toxicities (DLT), MTD, and tumor response were determined. The tumor response was measured by Response Evaluation Criteria in Solid Tumors (RECIST) and cancer antigen 125 levels. Results Forty-five patients were enrolled. Adverse events were mild to moderate in intensity, and grade 3 diarrhea (13%) was the most commonly reported serious adverse event. Grade 3 peripheral neuropathy was noted in two patients (4%). Diarrhea, peripheral neuropathy, and fatigue were the most common DLTs; however, these were uncommon in the first cycle and the MTD was therefore not reached in this study. Overall response (OR; complete and partial responses; median cycles, 8) per RECIST in patients with measurable disease (n = 36) was 19.5%. Median duration of disease stabilization (complete and partial responses and stable disease) was 15.8 months. These results appear improved from a previous study in a similar patient population using a weekly schedule (2.5 mg/m(2)/week; N = 53; OR, 5.7%). CONCLUSION Patupilone once every 3 weeks was well-tolerated at doses up to 11.0 mg/m(2). Patupilone demonstrated promising antitumor activity in patients with drug-resistant/refractory disease. An ongoing phase III study in this patient population is testing the 10.0 mg/m(2) dose.

Purpose: In patients treated with allogeneic stem cell transplantation for advanced mantle cell lymphoma (MCL), complete sustained remissions have been observed illustrating susceptibility of MCL cells to a graft-versus-lymphoma effect. To potentiate this graft-versus-lymphoma effect, adoptive transfer of in vitro selected MCL-specific CTL can be an attractive approach. The lack of expression of costimulatory molecules on MCL cells hampers the generation of MCL-reactive T-cell responses. The purpose of this study was to modify MCL cells into antigen-presenting cells (APC) and to use these MCL-APCs to induce allogeneic MCL-reactive T-cell responses., Experimental Design: Interleukin (IL)-4, IL-10, CpG, and CD40 activation were tested for their capacity to up-regulate costimulatory molecules on MCL cells. Primary MCL cells or the modified MCL-APCs were then used to evaluate the induction of MCL-reactive T-cell responses in HLA-matched donors., Results: Ligation of CD40 on MCL cells was essential to up-regulate costimulatory molecules and to induce production of high amounts of IL-12. In contrast to primary MCL cells, MCL-APC cells as stimulators were capable of inducing CD8+ CTL lines from HLA class I-matched donors. High numbers of CTL clones could be generated capable of efficiently killing the primary MCL cells and MCL-APC but not donor-specific targets., Conclusion: These results show the feasibility to generate primary allogeneic T-cell responses against MCL-APC, and may provide new immunotherapeutic tools to further exploit the graft-versus-lymphoma effect following allogeneic stem cell transplantation in patients with MCL.