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Dive into the research topics where John Sweetenham is active.

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Featured researches published by John Sweetenham.


The New England Journal of Medicine | 1998

A Prognostic Score for Advanced Hodgkin's Disease

Dirk Hasenclever; Volker Diehl; James O. Armitage; David Assouline; Magnus Björkholm; Ercole Brusamolino; George P. Canellos; Patrice Carde; Derek Crowther; David Cunningham; Houchingue Eghbali; Christophe Ferm; Richard I. Fisher; John H. Glick; Bengt Glimelius; Paolo G. Gobbi; Harald Holte; Sandra J. Horning; T. Andrew Lister; Dan L. Longo; Franco Mandelli; Aaron Polliack; Stephen J. Proctor; Lena Specht; John Sweetenham; Gillian Vaughan Hudson

BACKGROUND Two thirds of patients with advanced Hodgkins disease are cured with current approaches to treatment. Prediction of the outcome is important to avoid overtreating some patients and to identify others in whom standard treatment is likely to fail. METHODS Data were collected from 25 centers and study groups on a total of 5141 patients treated with combination chemotherapy for advanced Hodgkins disease, with or without radiotherapy. The data included the outcome and 19 demographic and clinical characteristics at diagnosis. The end point was freedom from progression of disease. Complete data were available for 1618 patients; the final Cox model was fitted to these data. Data from an additional 2643 patients were used for partial validation. RESULTS The prognostic score was defined as the number of adverse prognostic factors present at diagnosis. Seven factors had similar independent prognostic effects: a serum albumin level of less than 4 g per deciliter, a hemoglobin level of less than 10.5 g per deciliter, male sex, an age of 45 years or older, stage IV disease (according to the Ann Arbor classification), leukocytosis (a white-cell count of at least 15,000 per cubic millimeter), and lymphocytopenia (a lymphocyte count of less than 600 per cubic millimeter, a count that was less than 8 percent of the white-cell count, or both). The score predicted the rate of freedom from progression of disease as follows: 0, or no factors (7 percent of the patients), 84 percent; 1 (22 percent of the patients), 77 percent; 2 (29 percent of the patients), 67 percent; 3 (23 percent of the patients), 60 percent; 4 (12 percent of the patients), 51 percent; and 5 or higher (7 percent of the patients), 42 percent. CONCLUSIONS The prognostic score we developed may be useful in designing clinical trials for the treatment of advanced Hodgkins disease and in making individual therapeutic decisions, but a distinct group of patients at very high risk could not be identified on the basis of routinely documented demographic and clinical characteristics.


Blood | 2010

Inhibition of Syk with fostamatinib disodium has significant clinical activity in non-Hodgkin lymphoma and chronic lymphocytic leukemia

Jonathan W. Friedberg; Jeff Porter Sharman; John Sweetenham; Patrick B. Johnston; Julie M. Vose; Ann S. LaCasce; Julia Schaefer-Cutillo; Sven de Vos; Rajni Sinha; John P. Leonard; Larry D. Cripe; Stephanie A. Gregory; Michael P. Sterba; Ann Lowe; Ronald Levy; Margaret A. Shipp

Certain malignant B cells rely on B-cell receptor (BCR)-mediated survival signals. Spleen tyrosine kinase (Syk) initiates and amplifies the BCR signal. In in vivo analyses of B-cell lymphoma cell lines and primary tumors, Syk inhibition induces apoptosis. These data prompted a phase 1/2 clinical trial of fostamatinib disodium, the first clinically available oral Syk inhibitor, in patients with recurrent B-cell non-Hodgkin lymphoma (B-NHL). Dose-limiting toxicity in the phase 1 portion was neutropenia, diarrhea, and thrombocytopenia, and 200 mg twice daily was chosen for phase 2 testing. Sixty-eight patients with recurrent B-NHL were then enrolled in 3 cohorts: (1) diffuse large B-cell lymphoma (DLBCL), (2) follicular lymphoma (FL), and (3) other NHL, including mantle cell lymphoma (MCL), marginal zone lymphoma (MZL), mucosa-associated lymphoid tissue lymphoma, lymphoplasmacytic lymphomas, and small lymphocytic leukemia/chronic lymphocytic leukemia (SLL/CLL). Common toxicities included diarrhea, fatigue, cytopenias, hypertension, and nausea. Objective response rates were 22% (5 of 23) for DLBCL, 10% (2 of 21) for FL, 55% (6 of 11) for SLL/CLL, and 11% (1/9) for MCL. Median progression-free survival was 4.2 months. Disrupting BCR-induced signaling by inhibiting Syk represents a novel and active therapeutic approach for NHL and SLL/CLL. This trial was registered at www.clinicaltrials.gov as #NCT00446095.


Journal of Clinical Oncology | 2000

Enteropathy-Type Intestinal T-Cell Lymphoma: Clinical Features and Treatment of 31 Patients in a Single Center

Joanna Gale; Peter Simmonds; Graham M. Mead; John Sweetenham; Dennis H. Wright

PURPOSE We report the clinical features and treatment of 31 patients with a diagnosis of enteropathy-type intestinal T-cell lymphoma treated at the Wessex Regional Medical Oncology Unit in Southampton between 1979 and 1996 (23 men, eight women). PATIENTS AND METHODS Patients were identified from our lymphoma database. Details of history, physical examination, staging investigations, treatment, and outcome were taken from patient records. RESULTS Twelve patients (35%) had a documented clinical history of adult-onset celiac disease, and a further three had histologic features consistent with celiac disease in resected areas of the small bowel not infiltrated with lymphoma. After diagnosis, 24 (77%) of the 31 patients were treated with chemotherapy; the remaining seven had surgical treatment alone. More than half were unable to complete their planned chemotherapy courses, often because of poor nutritional status; 12 patients required enteral or parenteral feeding. A response to initial chemotherapy was observed in 14 patients (complete response, n = 10; partial response, n = 4). Observed complications of treatment were gastrointestinal bleeding, small-bowel perforation, and the development of enterocolic fistulae. Relapses occurred 1 to 60 months from diagnosis in 79% of those who responded to initial therapy. Of the total 31 patients, 26 (84%) have died, all from progressive disease or from complications of the disease and/or its treatment. The actuarial 1- and 5-year survival rates are 38.7% and 19.7%, respectively, with 1- and 5-year failure-free survival rates of 19.4% and 3.2%, respectively. CONCLUSION The prognosis for these patients is poor. This, in part, reflects late diagnosis and poor performance status at the time of presentation. The role of salvage treatments and high-dose chemotherapy at relapse is not clear. However, it is encouraging that there are five long-term survivors in our patient population.


Journal of Clinical Oncology | 1999

High-Dose Therapy and Autologous Stem-Cell Transplantation for Adult Patients With Hodgkin's Disease Who Do Not Enter Remission After Induction Chemotherapy: Results in 175 Patients Reported to the European Group for Blood and Marrow Transplantation

John Sweetenham; Angelo Michele Carella; G Taghipour; David Cunningham; Robert Marcus; Aldo Della Volpe; David C. Linch; Norbert Schmitz; Anthony H. Goldstone

PURPOSE: To investigate the results of high-dose therapy and autologous stem-cell transplantation (ASCT) in adults with Hodgkins disease who do not enter remission after induction therapy, to determine overall survival (OS) and progression free survival (PFS), and to identify prognostic factors. PATIENTS AND METHODS: A retrospective analysis of 175 patients reported to the European Group for Blood and Marrow Transplantation between November 1979 and October 1995. One hundred were male and 75 were female, with a median age of 26.5 years. Responses to first-line therapy were defined as progressive disease (PD) in 88 and stable/minimally responsive disease (SD/MR) in 87. Seventy-five patients received ASCT after failure of one induction regimen. Second-line therapy was given to the remaining 100 patients. Response to second-line therapy was PD in 34 and SD/MR in 66. OS and PFS rates were determined, and prognostic factors were investigated using univariate and multivariate analyses. RESULTS: Responses to hi...


Journal of Clinical Oncology | 2009

Randomized Comparison of the Stanford V Regimen and ABVD in the Treatment of Advanced Hodgkin's Lymphoma: United Kingdom National Cancer Research Institute Lymphoma Group Study ISRCTN 64141244

Peter Hoskin; Lisa Lowry; A. Horwich; Andrew Jack; Ben Mead; Barry W. Hancock; Paul Smith; Wendi Qian; Philippa Patrick; Bilyana Popova; Andrew R. Pettitt; David Cunningham; Ruth Pettengell; John Sweetenham; David C. Linch; Peter Johnson

PURPOSE This multicenter, prospective, randomized controlled trial compared the efficacy and toxicity of two chemotherapy regimens in advanced Hodgkins lymphoma (HL): the weekly alternating Stanford V and the standard, twice-weekly regimen of doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD). PATIENTS AND METHODS Patients had stage IIB, III, or IV disease or had stages I to IIA disease with bulky disease or other adverse features. Radiotherapy was administered in both arms to sites of previous bulk (> 5 cm) and to splenic deposits, although this was omitted in the latter part of the trial for patients achieving complete remission (CR) in the ABVD arm. A total of 520 patients were randomly assigned and were assessed for the primary outcome measure of progression-free survival (PFS). Five hundred patients received protocol treatment, and radiotherapy was administered to 73% in the Stanford V arm and to 53% in the ABVD arm. RESULTS The overall response rates after completion of all treatment were 91% for Stanford V and 92% for ABVD. During a median follow-up of 4.3 years, there was no evidence of a difference in projected 5-year PFS and overall survival (OS) rates (76% and 90%, respectively, for ABVD; 74% and 92%, respectively, for Stanford V). More pulmonary toxicity was reported for ABVD, whereas other toxicities were more frequent with Stanford V. CONCLUSION In a large, randomized trial, the efficacies of Stanford V and ABVD were comparable when given in combination with appropriate radiotherapy.


Journal of Clinical Oncology | 1996

Adult Burkitt's and Burkitt-like non-Hodgkin's lymphoma--outcome for patients treated with high-dose therapy and autologous stem-cell transplantation in first remission or at relapse: results from the European Group for Blood and Marrow Transplantation.

John Sweetenham; Rachel M. Pearce; G Taghipour; Didier Blaise; Christian Gisselbrecht; Ah Goldstone

PURPOSE To investigate the results of treatment for adult patients with Burkitts and Burkitt-like non-Hodgkins lymphoma (NHL) undergoing high-dose therapy and autologous stem-cell transplantation (ASCT), and to determine prognostic factors for this group. PATIENTS AND METHODS A retrospective analysis of 117 adult patients reported to the lymphoma registry of the European Group for Blood and Marrow Transplantation (EBMT) between June 1984 and November 1994. Seventy of these patients received high-dose therapy and stem-cell transplantation in first complete remission (CR). Data on all patients were reviewed, and prognostic factors were determined by univariate and multivariate analysis. RESULTS The actuarial overall survival (OS) rate for the entire group was 53% at 3 years. The major factor predicting for outcome after transplantation was disease status: the 3-year actuarial OS rate was 72% for patients transplanted in first CR, compared with 37% for patients in chemosensitive relapse, and 7% for chemoresistant patients. For patients transplanted in first CR, disease bulk at the time of ASCT was the only factor predictive of progression-free survival (PFS) and OS. CONCLUSION The results of high-dose therapy and ASCT for patients with relapsed disease, particularly chemosensitive relapse, are superior to those reported for conventional-dose salvage regimens. The results for patients transplanted in first CR require comparison with modern dose-intensive regimens.


British Journal of Haematology | 2009

Elevated pretransplant ferritin is associated with a lower incidence of chronic graft-versus-host disease and inferior survival after myeloablative allogeneic haematopoietic stem cell transplantation

Anuj Mahindra; Brian J. Bolwell; Ronald Sobecks; Lisa Rybicki; Brad Pohlman; Robert Dean; Steve Andresen; John Sweetenham; Matt Kalaycio; Edward A. Copelan

Elevated pretransplant serum ferritin levels have been associated with an increased incidence of morbidity and mortality after allogeneic haematopoietic stem cell transplantation (HCT). We studied 222 patients who underwent myeloablative allogeneic HCT in whom pretransplantation serum ferritin levels were available. Pretransplantation ferritin > 1910 μg/l was associated with lower overall survival (P = 0·003), lower relapse‐free survival (P = 0·003), decreased chronic graft‐versus‐host disease (GVHD) (P = 0·019) and increased non‐relapse mortality (NRM) (P = 0·042). Similar results were obtained when pretransplantation ferritin was analysed as a continuous variable and by quartiles. Our results indicate that an elevated pretransplant ferritin level adversely impacts transplantation outcomes. The adverse impact of elevated ferritin on NRM and survival was despite its association with lower incidences of acute and chronic GVHD, which are major causes of NRM. The association of ferritin with iron overload and its influence on HCT outcomes requires further prospective validation.


Journal of Clinical Oncology | 1994

High-Dose Therapy and Autologous Bone Marrow Transplantation for Adult Patients With Lymphoblastic Lymphoma: Results of the European Group for Bone Marrow Transplantation

John Sweetenham; Grace Liberti; Rachel M. Pearce; G Taghipour; Gino Santini; Anthony H. Goldstone

PURPOSE To investigate the results of treatment and factors that affect prognosis in adult patients undergoing high-dose therapy and autologous bone marrow transplantation (ABMT) for lymphoblastic lymphoma (LBL). PATIENTS AND METHODS The study was a retrospective analysis of 214 patients reported to the Lymphoma Registry of the European Group for Bone Marrow Transplantation (EBMT) between January 1981 and December 1992, including 105 patients undergoing marrow transplantation in first complete remission (CR). Data on all patients were reviewed, and analysis of prognostic factors conducted. RESULTS The actuarial overall survival rate at 6 years for the entire group is 42%. Disease status at ABMT was the major determinant of outcome: 6-year actuarial overall survival was 63% for patients transplanted in first CR, compared with 15% for those with resistant disease at the time of transplantation. Transplantation in second CR resulted in a 31% rate of actuarial overall survival at 6 years. For patients transplanted in first CR, univariate analysis failed to identify any factors at presentation that predicted for outcome after transplantation. CONCLUSION These results suggest that ABMT is effective therapy for adults with LBL, even in patients with disease that is resistant to conventional-dose therapy. Results for patients transplanted in second CR are superior to those reported for conventional-dose salvage regimens. The results in first CR require verification in a prospective randomized clinical study.


Bone Marrow Transplantation | 2007

Patients mobilizing large numbers of CD34 + cells ('super mobilizers') have improved survival in autologous stem cell transplantation for lymphoid malignancies

Brian J. Bolwell; Brad Pohlman; Lisa Rybicki; Ronald Sobecks; Robert Dean; Julie Curtis; Steven Andresen; A Koo; V Mineff; M Kalaycio; John Sweetenham

The cellular composition of an autologous graft may influence autologous stem cell transplantation (ASCT) outcome. Etoposide (VP) plus filgrastim (G) frequently mobilizes high numbers of CD34+ cells for autologous transplantation. We investigated whether patients collecting high numbers of CD34+ cells (‘super mobilizers’) have a better outcome than other patients. We reviewed 350 consecutive adult patients with NHL or Hodgkins lymphoma receiving an ASCT from January 1994 to December 2005, mobilized with VP+G. Super mobilizers were defined as collecting a minimum of 8 × 106 CD34+ cells/kg. Two hundred and three patients were super mobilizers, while 147 collected between 2.0 and 7.95 CD34+ cells/kg. Super mobilizers were younger and more likely to have received two or fewer prior chemotherapy regimens (80 versus 63%, P<0.001). Median CD34+ cell dose for the super mobilizing group was 13.7 × 106 versus 4.4 × 106/kg in the standard collecting group. The super mobilizer group had a superior overall survival (P=0.006). In multivariable analysis, favorable disease status and younger age at transplant, and super mobilization were associated with improved survival. We conclude that patients had an improved ASCT outcome if large numbers of CD34+ cells were mobilized and infused. The explanation for this observation is unknown.


Bone Marrow Transplantation | 2007

Autologous hematopoietic stem cell transplantation in peripheral T-cell lymphoma using a uniform high-dose regimen

Stephen D. Smith; Brian J. Bolwell; Lisa Rybicki; Stacey Brown; Robert Dean; M Kalaycio; Ronald Sobecks; Steven Andresen; Eric D. Hsi; Brad Pohlman; John Sweetenham

The role of high-dose therapy and autologous stem cell transplantation (ASCT) for patients with peripheral T-cell lymphoma (PTCL) is poorly defined. Comparisons of outcomes between PTCL and B-cell non-Hodgkins lymphoma (NHL) have yielded conflicting results, in part due to the rarity and heterogeneity of PTCL. Some retrospective studies have found comparable survival rates for patients with T- and B-cell NHL. In this study, we report our single-center experience of ASCT over one decade using a uniform chemotherapy-only high-dose regimen. Thirty-two patients with PTCL-unspecified (PTCL-u; 11 patients) and anaplastic large-cell lymphoma (21 patients) underwent autologous stem cell transplant, mostly for relapsed or refractory disease. The preparative regimen consisted of busulfan, etoposide and cyclophosphamide. Kaplan–Meier 5-year overall survival (OS) and relapse-free survival (RFS) are 34 and 18%, respectively. These results suggest a poor outcome for patients with PTCL after ASCT, and new therapies for T-cell lymphoma are needed.

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Edward A. Copelan

Carolinas Healthcare System

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