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Schmid C, de Wreede LC, van Biezen A, Finke J, Ehninger G, Ganser A, Volin L, Niederwieser D, Beelen D, Alessandrino P, Kanz L, Schleuning M, Passweg J, Veelken H, Maertens J, Cornelissen JJ, Blaise D, Gramatzki M, Milpied N, Yakoub-Agha I, Mufti G, Rovira M, Arnold R, de Witte T, Robin M, Kröger N. Outcome after relapse of myelodysplastic syndrome and secondary acute myeloid leukemia following allogeneic stem cell transplantation: a retrospective registry analysis on 698 patients by the Chronic Malignancies Working Party of the European Society of Blood and Marrow Transplantation. Haematologica 2017; 103:237-245. [PMID: 29101205 PMCID: PMC5792268 DOI: 10.3324/haematol.2017.168716] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 10/30/2017] [Indexed: 11/09/2022] Open
Abstract
No standard exists for the treatment of myelodysplastic syndrome relapsing after allogeneic stem cell transplantation. We performed a retrospective registry analysis of outcomes and risk factors in 698 patients, treated with different strategies. The median overall survival from relapse was 4.7 months (95% confidence interval: 4.1-5.3) and the 2-year survival rate was 17.7% (95% confidence interval: 14.8-21.2%). Shorter remission after transplantation (P<0.001), advanced disease (P=0.001), older age (P=0.007), unrelated donor (P=0.008) and acute graft-versus-host disease before relapse (P<0.001) adversely influenced survival. At 6 months from relapse, patients had received no cellular treatment, (i.e. palliative chemotherapy or best supportive care, n=375), donor lymphocyte infusion (n=213), or a second transplant (n=110). Treatment groups were analyzed separately because of imbalanced characteristics and difficulties in retrospectively evaluating the reason for individual treatments. Of the patients who did not receive any cellular therapy, 109 were alive at 6 months after relapse, achieving a median overall survival from this landmark of 8.9 months (95% confidence interval: 5.1-12.6). Their 2-year survival rate was 29.7%. Recipients of donor lymphocytes achieved a median survival from first infusion of 6.0 months (95% confidence interval: 3.7-8.3) with a 2-year survival rate of 27.6%. Longer remission after first transplantation (P<0.001) and younger age (P=0.009) predicted better outcome. Among recipients of a second transplant, the median survival from second transplantation was 4.2 months (95% confidence interval: 2.5-5.9), and their 2-year survival rate was 17.0%. Longer remission after first transplantation (P<0.001), complete remission at second transplant (P=0.008), no prior chronic graft-versus-host disease (P<0.001) and change to a new donor (P=0.04) predicted better outcome. The data enabled identification of patients benefiting from donor lymphocyte infusion and second transplantation, and may serve as a baseline for prospective trials.
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Affiliation(s)
- Christoph Schmid
- Department of Hematology and Oncology, Klinikum Augsburg, University of Munich, Augsburg, Germany
| | - Liesbeth C de Wreede
- Department of Medical Statistics & Bioinformatics, Leiden University Medical Center, the Netherlands.,DKMS, German Bone Marrow Donor Center, Germany
| | - Anja van Biezen
- Department of Medical Statistics & Bioinformatics, Leiden University Medical Center, the Netherlands
| | - Jürgen Finke
- Department of Medicine 1, Hematology and Oncology, University of Freiburg, Germany
| | - Gerhard Ehninger
- Medizinische Klinik und Poliklinik I, Universitaets-Klinikum Dresden, Germany
| | - Arnold Ganser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Germany
| | - Liisa Volin
- Stem Cell Transplantation Unit, HUCH Comprehensive Cancer Center, Helsinki, Finland
| | - Dietger Niederwieser
- Division of Hematology, Oncology and Hemostaseology, University Hospital Leipzig, Germany
| | - Dietrich Beelen
- Department of Bone Marrow Transplantation, University Hospital, Essen, Germany
| | - Paolo Alessandrino
- Clinica Ematologica, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Lothar Kanz
- Medizinische Klinik II, Universität Tübingen, Germany
| | | | - Jakob Passweg
- Department of Hematology, University Hospital, Basel, Switzerland
| | - Hendrik Veelken
- BMT Center Leiden, Leiden University Hospital, the Netherlands
| | - Johan Maertens
- Department of Hematology, University Hospital Gasthuisberg, Leuven, Belgium
| | - Jan J Cornelissen
- Erasmus MC Cancer Institute, University Medical Center Rotterdam, the Netherlands
| | - Didier Blaise
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli Calmettes, Marseille, France
| | - Martin Gramatzki
- Division of Stem Cell Transplantation and Immunotherapy, University Hospital Schleswig-Holstein Campus, Kiel, Germany
| | - Noel Milpied
- CHU Bordeaux, Hôpital Haut-Leveque, Pessac, France
| | | | - Ghulam Mufti
- Department of Hematological Medicine, GKT School of Medicine, London, UK
| | - Montserrat Rovira
- Institute of Hematology & Oncology, Hospital Clinic, Barcelona, Spain
| | - Renate Arnold
- Medizinische Klinik m. S. Hämatologie/Onkologie, Charité Universitätsmedizin Berlin, Germany
| | - Theo de Witte
- Department of Tumor Immunology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marie Robin
- Department of Hematology - BMT, Hôspital St. Louis, Paris, France
| | - Nikolaus Kröger
- Department of Stem Cell Transplantation, University Hospital Eppendorf, Hamburg, Germany
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de Witte T, Brand R, van Biezen A, Mufti G, Ruutu T, Finke J, von dem Borne P, Vitek A, Delforge M, Alessandrino P, Harlahakis N, Russell N, Martino R, Verdonck L, Kröger N, Niederwieser D. Allogeneic stem cell transplantation for patients with refractory anaemia with matched related and unrelated donors: delay of the transplant is associated with inferior survival. Br J Haematol 2009; 146:627-36. [DOI: 10.1111/j.1365-2141.2009.07809.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sanz MA, Labopin M, Gorin NC, de la Rubia J, Arcese W, Meloni G, Bacigalupo A, Alessandrino P, Carreras E, Iriondo A, Novitzky N, Jacobs P, Bandini G, Lo-Coco F, Frassoni F, Rocha V. Hematopoietic stem cell transplantation for adults with acute promyelocytic leukemia in the ATRA era: a survey of the European Cooperative Group for Blood and Marrow Transplantation. Bone Marrow Transplant 2007; 39:461-9. [PMID: 17322930 DOI: 10.1038/sj.bmt.1705620] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We performed a survey of the European Cooperative Group for Blood and Marrow Transplantation to analyze the outcome of 625 acute promyelocytic leukemia (APL) patients transplanted with auto- or allogeneic-hematopoietic stem cell transplantation (autoHSCT, alloHSCT) after 1993, in first (CR1) or in second complete remission (CR2). Leukemia-free survival (LFS) at 5 years in CR1 was 69% for 149 patients autografted and 68% for 144 patients allografted, whereas in CR2, LFS was 51% in 195 autoHSCT and 59% in 137 alloHSCT recipients, respectively. In the group of autoHSCT for CR1 (n=149), higher relapse incidence (RI) was associated with shorter time from diagnosis to transplant (<7.6 months); transplant-related mortality (TRM) was increased in older patients (>47 years), whereas for CR2, longer time from diagnosis to transplant (>18 months) was associated with increased LFS and decreased RI. In the alloHSCT group for CR1 (n=144), age (<33 years) was associated with increased LFS and decreased TRM and for CR2 (n=137), the use of mobilized peripheral blood stem cells was associated with decreased TRM. Female recipient, a female donor to male recipient and transplants performed before 1997 were associated with decreased RI. In conclusion, HSCT still appears to have a role in APL, especially for patients in CR2.
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Affiliation(s)
- M A Sanz
- Hematology Service, Hospital Universitario La Fe, Valencia, Spain.
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Uderzo C, Bonanomi S, Busca A, Renoldi M, Ferrari P, Iacobelli M, Morreale G, Lanino E, Annaloro C, Volpe AD, Alessandrino P, Longoni D, Locatelli F, Sangalli H, Rovelli A. Risk Factors and Severe Outcome in Thrombotic Microangiopathy After Allogeneic Hematopoietic Stem Cell Transplantation. Transplantation 2006; 82:638-44. [PMID: 16969286 DOI: 10.1097/01.tp.0000230373.82376.46] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Thrombotic microangiopathy (TMA) has been described as severe complication after hematopoietic stem cell transplantation (HSCT). The principal aim of this study was to focus the incidence and the outcome of TMA in the era of more complex HSCTs. METHODS We analyzed the role of some predicting factors for the incidence and the outcome of TMA after HSCT. We enrolled 539 consecutive patients (307 males, median age 31 years) undergoing HSCT from match or mismatch human leukocyte antigen family donor (314) or match/mismatch unrelated (195) and haploidentical donor (30) for malignant or nonmalignant diseases. TMA diagnosis was performed by homogeneous clinical and laboratory criteria. RESULTS Sixty-four of 539 patients presented TMA (11,87%) and the five-year cumulative incidence of TMA was 14% (HR=0.13). Fifty nine of 64 patients were affected by malignant and 5/64 by non-malignant diseases. On multivariate analysis, TMA occurrence was influenced by graft versus host disease >grade II (P=0.0001), donor type (P=0.029), gender (P=0.0233), total body irradiation based conditioning regimen (P=0.0041). Three factors for TMA outcome proved to be statistically significant by multivariate analysis: age (P=0.009), donor type (P=0.0187) and TMA index (P=0.029). The TMA mortality rate was 50%. The outcome was influenced by defibrotide (P=0.02 in univariate analysis). CONCLUSIONS The study underlines the possibility of finding out which patients are more prone to developing post-HSCT TMA, and identifies which risk factors are more frequently associated with a dismal outcome after TMA.
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Affiliation(s)
- Cornelio Uderzo
- Clinica Pediatrica dell'Università di Milano-Bicocca, Centro Trapianto di Midollo Osseo, Ospedale San Gerardo, Monza, Italy.
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Frumento G, Bacigalupo A, Lamparelli T, Lanino E, Delfino L, Morabito A, Parodi AM, Pera C, Pozzi S, Sormani MP, Bruzzi P, Colombo AA, Alessandrino P, Martinetti M, Bignon JD, Bandini G, Bontadini A, Marceno’ R, Rambaldi A, Bontempelli M, Fuller T, Ferrara GB. Relevance of amino acid 116 substitutions on the outcome of hla class I mismatched bone marrow transplants. Hum Immunol 2003. [DOI: 10.1016/j.humimm.2003.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Barosi G, Marchetti M, Alessandrino P, Locatelli F, Casula S, Lunghi M, Cazzola M, Giraldi E, Bernasconi C. A model for analysing the cost of autologous peripheral blood progenitor cell (PBPC) transplantation. Bone Marrow Transplant 1999; 23:719-25. [PMID: 10218850 DOI: 10.1038/sj.bmt.1701639] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Data from autologous peripheral blood progenitor cell (PBPC) transplant recipients were used for cost analysis and modelling so as to link the main intervention procedures and clinical events to resource use and costs. This cohort consisted of 64 patients from 4 to 62 years old at transplantation (mean, 36.9 years) who underwent a first transplant between August 1994 and May 1997. The main indications for transplantation were non-Hodgkin's lymphomas (47%), multiple myeloma (30%) and Hodgkin's lymphomas (15%). The course of a patient during the whole transplant procedure was modelled using a Markov chain of six states of health: (1) mobilisation and recovery of PBPC; (2) post-mobilisation phase; (3) conditioning and transplant; (4) critical haematological reconstitution; (5) non-critical haematological reconstitution; (6) death. The probability of transition between the different health states, together with the estimated costs, were the input for the Markov model. The model also managed transition probabilities depending both on the current health state and on various demographic, clinical and procedure-related covariates unique to the patient. The expected time spent in each clinical state and the expected total cost were, therefore, estimated. This analysis gave an actual total cost per transplanted patient of $26,600 (95% range: $24,700 to $43,500) while mean duration was 197 days. The expenses for in-hospital stay accounted for 80% of the costs. Both the probability of staying in the different states, and the consequent cost were dependent on the number of CD34-positive cells collected, the phase and the type of the disease, the subset of patients (either children or adults), and the post-transplant G-CSF prophylaxis. The sensitivity of the estimates to alternative assumptions was studied, and the method of comparing alternative future scenarios by the model was explored.
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Affiliation(s)
- G Barosi
- Laboratory of Medical Informatics, IRCCS Policlinico S Matteo, Italy
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7
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Alessandrino P, Bernasconi P, Caldera D, Colombo A, Bonfichi M, Malcovati L, Klersy C, Martinelli G, Maiocchi M, Pagnucco G, Varettoni M, Perotti C, Bernasconi C. Adverse events occurring during bone marrow or peripheral blood progenitor cell infusion: analysis of 126 cases. Bone Marrow Transplant 1999; 23:533-7. [PMID: 10217182 DOI: 10.1038/sj.bmt.1701609] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Bone marrow (BM) and/or peripheral blood progenitor cells (PBPC) given after high-dose chemo-radiotherapy are commonly cryopreserved. Re-infusion of the thawed product can cause cardiovascular and other complications. We compared two groups of adult patients receiving autologous BM or PBPC transplant to assess the incidence of adverse events occurring during infusion. Fifty-one patients received BM, and 75 PBPC. The two groups were comparable in respect of age, total volume infused, quantity of dimethylsulfoxide (DMSO) and number of polymorphonuclear neutrophils. Patients receiving PBPC had a higher number of nucleated cells per kg of body weight; those in the BM group received a significantly greater quantity of red cells. Non-cardiovascular complications occurred in 19% and 8% of patients rescued by BM and PBPC respectively. The incidence of hypertension was 21% in the BM and 36% in the PBPC group. Asymptomatic hypotension was more frequent in PBPC patients (P<0.001). Bradyarrhythmia was noticed in two of 75 PBPC patients and in 14 of 51 BM patients (P<0.001). In the former group one patient had heart block; he died of renal failure 10 days later. Bradycardia and hemoglobinuria were more common in patients receiving BM where a higher concentration of red cells was present (P<0.001). Since bradyarrhythmias may be a life-threatening complication we advise continuous careful monitoring during infusion of thawed BM. The strong correlation between bradycardia and red blood cell contamination suggests the use of purified products with a very low red cell content.
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Affiliation(s)
- P Alessandrino
- Centro Trapianti di Midollo Osseo, Istituto di Ematologia, IRCCS Policlinico S Matteo, Pavia, Italy
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8
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Van Lint MT, Uderzo C, Locasciulli A, Majolino I, Scimé R, Locatelli F, Giorgiani G, Arcese W, Iori AP, Falda M, Bosi A, Miniero R, Alessandrino P, Dini G, Rotoli B, Bacigalupo A. Early treatment of acute graft-versus-host disease with high- or low-dose 6-methylprednisolone: a multicenter randomized trial from the Italian Group for Bone Marrow Transplantation. Blood 1998; 92:2288-93. [PMID: 9746766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Ninety-five patients undergoing an allogeneic bone marrow transplant (BMT) and developing acute graft-versus-host disease (aGvHD) were randomized to receive low-dose intravenous 6-methylprednisolone (6MPred; 2 mg/kg /d; n = 47) or high-dose 6MPred (10 mg/kg/d; n = 48) for 5 days, with subsequent tapering doses. On day 5 patients not responding or progressing on low-dose 6MPred could be switched to high-dose 6MPred. All patients, aged 1 to 55 years, were recipients of unmanipulated BMT from HLA identical sibling donors. Patients were stratified at randomization for age (</>/= 20 years), disease (acute leukemia, chronic myeloid leukemia [CML], nonneoplastic disease), disease status (early/advanced), and GvHD prophylaxis (cyclosporin/cyclosporin + methotrexate). Primary endpoints were response to treatment and evolution of aGvHD to grade III-IV. Secondary endpoints were cytomegalovirus (CMV) infections, transplant-related mortality (TRM), and relapse. The median interval between BMT and treatment was 12 days (6 to 43). Results in the two groups (2 v 10 mg/kg) were as follows: response of aGvHD 68% versus 71% (P = .9), evolution to aGvHD grade III-IV 17% versus 20% (P = . 6), CMV infections 55% versus 60% (P = .7), 3-year actuarial TRM 28% versus 32% (P = .7), relapse 17% versus 7% (P = .1). The actuarial survival at 3 years was 63% versus 62% (P = .9) with a median follow up of 580 and 778 days. On day 5 of therapy, 26 patients assigned to low-dose (2 mg/kg) 6MPred were switched to a higher dose of 6MPred because of no response or progression. Their actuarial TRM was 46%, which is significantly higher than TRM of patients who responded on 2 mg/kg and continued with tapering doses (TRM = 16%, P = .007). In conclusion, early treatment of acute GvHD with 6MPred 10 mg/kg/d does not improve the response rate as compared with 2 mg/kg/d, nor does it prevent evolution to aGvHD grade III-IV. CMV infections, TRM, and survival were also comparable. A group of patients at high risk of TRM can be identified after 5 days of treatment with 6MPred 2 mg/kg and could be eligible for alternative forms of therapy.
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Affiliation(s)
- M T Van Lint
- Divisione Ematologial, Ospedale San Martino, Genova; Clinica Pediatrica, Milano, Italy
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9
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Spada M, Alessiani M, Bonfichi M, Viezzoli A, Pileggi A, Abbiati F, Alessandrino P, Bernasconi C, Dionigi P, Zonta A. Development of a model of combined bone marrow and small bowel transplantation in swine. Transplant Proc 1998; 30:2609-10. [PMID: 9745512 DOI: 10.1016/s0041-1345(98)00748-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- M Spada
- Department of Surgery, University of Pavia School of Medicine, I.R.C.C.S. San Matteo Hospital, Italy
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Locasciulli A, Alberti A, Bandini G, Polchi P, Arcese W, Alessandrino P, Bosi A, Testa M, Bacigalupo A. Allogeneic bone marrow transplantation from HBsAg+ donors: a multicenter study from the Gruppo Italiano Trapianto di Midollo Osseo (GITMO). Blood 1995; 86:3236-40. [PMID: 7579420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Hepatitis B virus (HBV)-infected individuals are occasionally used as donors for bone marrow transplantation (BMT). We studied the rate of HBV infection and the clinical expression of the associated liver disease in patients receiving marrow from HBsAg+ donors. We performed a retrospective survey in 14 BMT units in Italy in which all BMTs performed between 1984 and 1994 were reviewed and those involving HBsAg+ donors were identified. Donors and recipients were analyzed for HBV markers and liver disease. A total of 24 of 2,586 patients (0.9%) had received an HBsAg+ marrow. HBsAg became detectable in 22% of pre-BMT HBsAg- patients, but only 5.5% became chronic HBsAg carriers. Antigenemia developed more frequently in anti-HBs- compared with anti-HBs+ patients independently of passive prophylaxis with hyperimmune anti-HBs Ig, although the difference was not significant. Severe liver failure with death occurred in 21% of patients, which was a value greater than that generally observed after BMT in our units (3.7%). Patients with an anti-HBe+ donor had higher frequency of liver failure (28% v 0%) and alanine aminotransferase peaks as compared with those of patients with an HBeAg+ donor. Liver failure was not observed in anti-HBs+ recipients. The use of HBsAg+ donors, particularly if anti-HBe+, increases the risk of severe liver disease in BMT recipients. Anti-HBs positivity may prevent severe liver damage.
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Affiliation(s)
- A Locasciulli
- Clinica Pediatrica Università di Milano, Division of Ematologia Pediatrica, Ospedale S. Gerardo, Monza, Italy
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Barosi G, Alessandrino P, Merlini G, Orlandi E, Spriano P. Non-tropical idiopathic splenomegaly. Report of a case. Haematologica 1982; 67:255-60. [PMID: 6807772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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12
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Orlandi E, Alessandrino P, Baraldi A, Barosi G, Berzuini C, Cazzola M, Spriano P. Erythropoiesis in hairy cell leukaemia: a true erythroid failure. Scand J Haematol 1982; 28:97-102. [PMID: 7089479 DOI: 10.1111/j.1600-0609.1982.tb00501.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A quantitative evaluation of erythropoiesis was carried out in 12 patients with hairy cell leukaemia (HCL). The results were compared with those obtained in eight patients with aplastic anaemia (AA) in order to define the characteristics of erythroid failure in HCL. Discriminant analysis was applied to both haematological and erythrokinetic parameters of the two disease groups. Plasma iron concentration and MCV were significantly higher in AA, and allowed a perfect separation of the patients. As regards erythrokinetics, values of ineffective erythropoiesis and peripheral haemolysis were able to separate completely the two disease groups, being significantly lower in HCL than in AA. A true erythroid failure was the peculiar erythrokinetic pattern of HCL. This conclusion allows one to speculate on the nature of the stem cell damage in this disease.
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14
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Cazzola M, Alessandrino P, Barosi G, Berzuini C, Frassoni F, Orlandi E, Stefanelli M, Perugini S. The use of 59Fe for estimating red cell production and destruction: a comparative evaluation of two methods for the analysis of experimental data. Haematologica 1979; 64:696-713. [PMID: 121085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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15
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Cazzola M, Alessandrino P, Barosi G, Morandi S, Stefanelli M. Quantitative evaluation of the mechanisms of the anaemia in heterozygous beta-thalassaemia. Scand J Haematol 1979; 23:107-14. [PMID: 493874 DOI: 10.1111/j.1600-0609.1979.tb02680.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ferrokinetic studies were carried out in 8 patients with heterozygous beta-thalassaemia with anaemia of varying severity. Effective and ineffective erythropoiesis, mean red cell lifespan and non-erythroid iron turnover were estimated from the experimental data through a mathematical model of iron kinetics. Erythropoietic activity was markedly increased in all patients, but was variably ineffective (from 10 to 74%). A negative correlation (r = 0.855, P less than 0.01) was found between the amount of ineffective erythropoiesis and Hb level. Red cell lifespan was variably shortened and there was a negative correlation between the degree of daily peripheral haemolysis and Hb level (r = 0.733, P less than 0.05). Non-erythroid iron turnover was increased in most patients. The results provide quantitative measurements of the mechanisms responsible for the wide variation of the Hb level in heterozygous beta-thalaeeaemia. Ineffective erythropoiesis seems to be the major reason for the anaemia. Peripheral haemolysis contributes to it, especially in the most severely affected patients. The increased non-erythroid iron turnover may be responsible for the pathology which characterizes heterozygotes in the adult life.
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