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Artificial intelligence methods to estimate overall mortality and non-relapse mortality following allogeneic HCT in the modern era: an EBMT-TCWP study. Bone Marrow Transplant 2024; 59:232-238. [PMID: 38007531 DOI: 10.1038/s41409-023-02147-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 10/04/2023] [Accepted: 11/03/2023] [Indexed: 11/27/2023]
Abstract
Allogeneic haematopoietic cell transplantation (alloHCT) has curative potential counterbalanced by its toxicity. Prognostic scores fail to include current era patients and alternative donors. We examined adult patients from the EBMT registry who underwent alloHCT between 2010 and 2019 for oncohaematological disease. Our primary objective was to develop a new prognostic score for overall mortality (OM), with a secondary objective of predicting non-relapse mortality (NRM) using the OM score. AI techniques were employed. The model for OM was trained, optimized, and validated using 70%, 15%, and 15% of the data set, respectively. The top models, "gradient boosting" for OM (AUC = 0.64) and "elasticnet" for NRM (AUC = 0.62), were selected. The analysis included 33,927 patients. In the final prognostic model, patients with the lowest score had a 2-year OM and NRM of 18 and 13%, respectively, while those with the highest score had a 2-year OM and NRM of 82 and 93%, respectively. The results were consistent in the subset of the haploidentical cohort (n = 4386). Our score effectively stratifies the risk of OM and NRM in the current era but do not significantly improve mortality prediction. Future prognostic scores can benefit from identifying biological or dynamic markers post alloHCT.
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Stem cell transplantation for congenital dyserythropoietic anemia: an analysis from the European Society for Blood and Marrow Transplantation. Haematologica 2019; 104:e335-e339. [PMID: 30679331 DOI: 10.3324/haematol.2018.206623] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Impact of Conditioning Regimen on Outcomes for Children with Acute Myeloid Leukemia Undergoing Transplantation in First Complete Remission. An Analysis on Behalf of the Pediatric Disease Working Party of the European Group for Blood and Marrow Transplantation. Biol Blood Marrow Transplant 2016; 23:467-474. [PMID: 27916512 DOI: 10.1016/j.bbmt.2016.11.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 11/29/2016] [Indexed: 01/26/2023]
Abstract
Hematopoietic stem cell transplantation (HSCT) represents the cornerstone of treatment in pediatric high-risk and relapsed acute myeloid leukemia (AML). The aim of the present study was to compare outcomes of pediatric patients with AML undergoing HSCT using 3 different conditioning regimens: total body irradiation (TBI) and cyclophosphamide (Cy); busulfan (Bu) and Cy; or Bu, Cy, and melphalan (Mel). In this retrospective study, registry data for patients > 2 and <18 years age undergoing matched allogeneic HSCT for AML in first complete remission (CR1) in 204 European Group for Blood and Marrow Transplantation centers between 2000 and 2010 were analyzed. Data were available for 631 patients; 458 patients received stem cells from a matched sibling donor and 173 from a matched unrelated donor. For 440 patients, bone marrow was used as stem cell source, and 191 patients received peripheral blood stem cells. One hundred nine patients received TBICy, 389 received BuCy, and 133 received BuCyMel as their preparatory regimen. Median follow-up was 55 months. Patients receiving BuCyMel showed a lower incidence of relapse at 5 years (14.7% versus 31.5% in BuCy versus 30% in TBICy, P < .01) and higher overall survival (OS) (76.6% versus 64% versus 64.5%, P = .04) and leukemia-free survival (LFS) (74.5% versus 58% versus 61.9%, P < .01), with a comparable nonrelapse mortality (NRM) (10.8% versus 10.5% versus 8.1%, P = .79). Acute graft-versus-host disease (GVHD) grades III and IV but not chronic GVHD, was higher in patients receiving BuCyMel. Older age at HSCT had an adverse impact on NRM and the use of peripheral blood as stem cell source was associated with increased chronic GVHD and NRM as well as lower LFS and OS. Among pediatric patients receiving HSCT for AML in CR1, the use of BuCyMel conditioning proved superior to TBICy and BuCy in reducing relapse and improving LFS.
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Is there a stronger graft-versus-leukemia effect using HLA-haploidentical donors compared with HLA-identical siblings? Leukemia 2015; 30:447-55. [PMID: 26293645 DOI: 10.1038/leu.2015.232] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 07/13/2015] [Accepted: 07/20/2015] [Indexed: 01/18/2023]
Abstract
Haploidentical hematopoietic stem cell transplants (HSCTs) are increasingly used, but it is unknown whether they have a stronger graft-versus-leukemia (GVL) effect. We analyzed 10 679 acute leukemia patients who underwent HSCT from an HLA-matched sibling donor (MSD, n=9815) or a haploidentical donor (⩾2 HLA-antigen disparity, n=864) between 2007 and 2012, reported to the European Group for Blood and Marrow Transplantation. In a Cox regression model, acute and chronic graft-versus-host disease (GVHD) was added as time-dependent variables. There was no difference in probability of relapse between recipients of haploidentical and MSD grafts. Factors of importance for relapse after T-cell-replete grafts included remission status at HSCT, Karnofsky score ⩽80, acute GVHD of grade II or higher and chronic GVHD (P<10(-5)). Patients with post-transplant cyclophosphamide (n=194) had similar outcome as other T-cell-replete haploidentical transplants (n=369). Non-relapse mortality was significantly higher in the haploidentical group compared with that in MSD patients (P<10(-5)). Leukemia-free survival was superior in the MSD patients receiving T-cell-replete (P<10(-5)) or T-cell-depleted grafts (P=0.0006). The risk of relapse was the same in acute leukemia patients who received haploidentical donor grafts as in those given MSD transplants, suggesting a similar GVL effect.
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Higher busulfan dose intensity appears to improve leukemia-free and overall survival in AML allografted in CR2: An analysis from the Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation. Leuk Res 2015; 39:933-7. [PMID: 26003666 DOI: 10.1016/j.leukres.2015.04.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/09/2015] [Accepted: 04/15/2015] [Indexed: 10/23/2022]
Abstract
Allogeneic hematopoietic cell transplantation is a potentially curative treatment in patients with acute myeloid leukemia. Recent advances in the field of hematopoietic cell allografting have resulted in a practice shift, favoring less intense preparative regimens. We present results of a retrospective comparative analysis of two preparative regimens, namely FB2 (IV fludarabine plus IV busulfan 6.4mg/kg±10%) and FB4 (IV fludarabine plus IV busulfan 12.8mg/kg ±10%), in patients with acute myeloid leukemia undergoing hematopoietic cell allografting in second complete remission at EBMT participating centers. Between 2003 and 2010, 128 AML patients in second complete remission were allografted following a preparative regimen of FB2 (n=88) or FB4 (n=40). The median time-to-neutrophil engraftment was similar whether patients received FB2 (16 (5-38) days) or FB4 (16 (9-29) days), p=0.45. A multivariate analysis showed that use of FB4 resulted in improved 2-year leukemia-free (HR=0.44 (95%CI=0.21, 0.94), p=0.03) and overall survival (HR=0.38 (95%CI=0.16, 0.86), p=0.02). Cumulative incidence of non-relapse mortality (2-year) for all patients was 21% (95%CI=14-28%). Our analysis suggests that FB4 improves 2-year leukemia-free and overall survival in AML allografted in second complete remission. A confirmatory randomized controlled trial that compares these two preparative regimens (FB2 vs. FB4) in AML in CR2 is definitely warranted.
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Current outcome of HLA identical sibling versus unrelated donor transplants in severe aplastic anemia: an EBMT analysis. Haematologica 2015; 100:696-702. [PMID: 25616576 DOI: 10.3324/haematol.2014.115345] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 01/21/2015] [Indexed: 11/09/2022] Open
Abstract
We have analyzed 1448 patients with acquired aplastic anemia grafted between 2005 and 2009, and compared outcome of identical sibling (n=940) versus unrelated donor (n=508) transplants. When compared to the latter, sibling transplants were less likely to be performed beyond 180 days from diagnosis (39% vs. 85%), to have a cytomegalovirus negative donor/recipient status (15% vs. 23%), to receive antithymocyte globulin in the conditioning (52% vs. 61%), and more frequently received marrow as a stem cell source (60% vs. 52%). Unrelated donor grafts had significantly more acute grade II-IV (25% vs. 13%) and significantly more chronic graft-versus-host disease (26% vs. 14%). In multivariate analysis, the risk of death of unrelated donor grafts was higher, but not significantly higher, compared to a sibling donor (P=0.16). The strongest negative predictor of survival was the use of peripheral blood as a stem cell source (P<0.00001), followed by an interval of diagnosis to transplant of 180 days or more (P=0.0005), patient age 20 years or over (P=0.0005), no antithymocyte globulin in the conditioning (P=0.003), and donor/recipient cytomegalovirus sero-status, other than negative/negative (P=0.04). In conclusion, in multivariate analysis, the outcome of unrelated donor transplants for acquired aplastic anemia, is currently not statistically inferior when compared to sibling transplants, although patients are at greater risk of acute and chronic graft-versus-host disease. The use of peripheral blood grafts remains the strongest negative predictor of survival.
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Comparing i.v. BU dose intensity between two regimens (FB2 vs FB4) for allogeneic HCT for AML in CR1: a report from the Acute Leukemia Working Party of EBMT. Bone Marrow Transplant 2014; 49:1170-5. [PMID: 24978140 DOI: 10.1038/bmt.2014.133] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 05/07/2014] [Accepted: 05/12/2014] [Indexed: 01/20/2023]
Abstract
This retrospective analysis compared two regimens of fludarabine combined with i.v. BU 6.4 mg/kg (FB2) or BU 12.8 mg/kg (FB4) for allografting of AML in first CR. A total of 437 patients (median age: 50 years) were administered FB2 (n = 225, 51%) or FB4 (n = 212, 49%). Median follow-up time was 28 months. Use of FB2 resulted in a longer time to neutrophil engraftment (17 vs 15 days, P < 0.0001) but no difference in incidence of grade II-IV acute (P = 0.54) or chronic GVHD (P = 0.51). In patients < 50 years of age, FB2 was associated with a higher 2-year cumulative incidence of relapse (33 ± 6% vs 20 ± 4%, P = 0.04), but there was no difference in 2-year leukemia-free survival (LFS) (P = 0.45), OS (P = 0.53) or non-relapse mortality (P = 0.17). In recipients ⩾ 50 years of age, FB2 resulted in better 2-year LFS (63 ± 4% vs 42 ± 7%, P = 0.02) and OS (68 ± 4% vs 45 ± 7%, P = 0.006); a lower 2-year non-relapse mortality, albeit not statistically significant (15 ± 3% vs 29 ± 6%, P = 0.06), was observed with FB2. FB2 is an effective and well-tolerated regimen in patients ⩾ 50 years of age and does not compromise survival when used in patients <50 years undergoing allogeneic transplantation for AML in first CR.
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Bone marrow versus peripheral blood as the stem cell source for sibling transplants in acquired aplastic anemia: survival advantage for bone marrow in all age groups. Haematologica 2012; 97:1142-8. [PMID: 22315497 DOI: 10.3324/haematol.2011.054841] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Bone marrow has been shown to be superior to peripheral blood, as a stem cell source, in young patients (<20 years of age) with acquired aplastic anemia undergoing a matched sibling transplant. The aim of this study was to test whether this currently also holds true for older patients with acquired aplastic anemia. DESIGN AND METHODS We analyzed 1886 patients with acquired aplastic anemia who received a first transplant from a human leukocyte antigen identical sibling between 1999 and 2009, with either bone marrow (n=1163) or peripheral blood (n=723) as the source of stem cells. RESULTS In multivariate Cox analysis negative predictors for survival were: patient's age over 20 years (RR 2.0, P<0.0001), an interval between diagnosis and transplantation of more than 114 days (RR 1.3, P=0.006), no anti-thymocyte globulin in the conditioning (RR 1.6, P=0.0001), a conditioning regimen other than cyclophosphamide (RR=1.3, P=0.008) and the use of peripheral blood as the source of stem cells (RR 1.6, P<0.00001). The survival advantage for recipients of bone marrow rather than peripheral blood was statistically significant in patients aged 1-19 years (90% versus 76% P<0.00001) as well as in patients aged over 20 years (74% versus 64%, P=0.001). The advantage for recipients of bone marrow over peripheral blood was maintained above the age of 50 years (69% versus 39%, P=0.01). Acute and chronic graft-versus-host disease were more frequent in peripheral blood transplants. Major causes of death were graft-versus-host disease (2% versus 6% in bone marrow and peripheral blood recipients, respectively), infections (6% versus 13%), and graft rejection (1.5% versus 2.5%). CONCLUSIONS This study shows that bone marrow should be the preferred stem cell source for matched sibling transplants in acquired aplastic anemia, in patients of all age groups.
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A population-based study of the epidemiology and clinical features of adults with acute myeloid leukemia in Algeria: report on behalf of the Algerian Acute Leukemia Study Group. Hematol Oncol Stem Cell Ther 2011; 4:161-6. [DOI: 10.5144/1658-3876.2011.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Manifestations immunes associées aux syndromes myélodysplasiques. Étude prospective de 40 patients. Rev Med Interne 2005; 26:777-83. [PMID: 16203055 DOI: 10.1016/j.revmed.2005.06.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2004] [Accepted: 06/27/2005] [Indexed: 10/25/2022]
Abstract
UNLABELLED The association of myelodysplastic syndromes (MDS) with auto-immune diseases and humoral disorders have already been reported. In this prospective study we tried to estimate type and the frequency of immunological associated diseases among patients affected by MDS. PATIENTS-METHODS In this prospective study, auto-immune disease and humoral immunity disorders were systematically searched during MDS and conversely MDS searched during cytopenia. All MDS secondary to chemotherapy and the children's MDS were excluded. The MDS diagnosis was established according to FAB criteria and patients were classified in two groups A or B according to presence (group A) or not (group B) of dysimmune manifestations. RESULTS Forty patients(19 males and 21 females, mean age of 56,6 years) with MDS have been enrolled during this period (group A: 20 patients). Associated diseases are following: systemic lupus erythematosus (three), lupus-like syndrome(one), sarcoidisis(one), Sjogrën syndrome(one), polyarthritis (two), chronic liver diseases (three), autoimmune thyroid diseases (two), pyoderma gangrenosum (one), Crohn's disease(one), haemolytic anaemia (one), and pericardial effusion(one). CONCLUSION A wide spectrum of auto-immune manifestations is frequently reported in myelodysplastic syndromes. Further studies are necessary for discuss the current physiopathological hypothesis with their therapeutic relevance.
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Abstract
Severe hypofibrinogenemia was found in an Algerian woman who, since the age of 37 years, suffered three different episodes of ischemic necrosis of the toes and fingers leading to amputation of the toes and surgical removal of necrotic tissue (necretomy). No anti-fibrinogen antibody was present. The deficiency appeared to be due to severe congenital hypofibrinogenemia since the fibrinogen level remained at the same low level over a long period, without any abnormality of other coagulation proteins. The thrombotic events may be explained by the increased thrombin generation observed in the patient's plasma, due to the lack of thrombin adsorption onto a fibrin net.
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[Hodgkin disease, clinical stages IA-IIB: evaluation of the value of cisplatin. Preliminary results]. Bull Cancer 1993; 80:50-4. [PMID: 8204918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Cisplatinum is highly effective in numerous solid tumors and was evaluated in Hodgkin's disease clinical stages (CS) I/II. Sixty-five patients (43 male, 22 female; median age 25, with 12 patients under 16: CS IA-IIA 41, IB 5, IIB 19) were randomly assigned to one of the following arms (PAF87 protocol): 3 ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine with methylprednisolone) cycles (ABVD arm) or 3 ABVD plus cisplatinum cycles (ABVD-Plt arm) followed by radiotherapy (RT); extended field (40 Gy) RT with a short paraaortic field including the spleen (30 Gy) was then administered in the ABVD arm; extended field (30 Gy) without lombosplenic port prophylaxis. RT was administered in ABVD-Plt arm when patients were in complete remission (CR) after chemotherapy (CT). Median follow-up was 35 months (6-62 months). During CT, 1 patient (ABVD-Plt) died from viral meningo-encephalitis; five patients (1 ABVD, 4 ABVD-Plt) stopped treatment because of emesis, of whom three receiving only 1.5-2.5 (ABVD-Plt) cycles, are still in CR after 13-60 months. Fifty-five patients (27 ABVD-Plt) were in CR after CT. Among the 27 ABVD-Plt patients, all in CR after RT, two died (one from myocardial infarction and one from immunoblastic lymphoma); one patient from the ABVD arm died from gastro-intestinal hemorrhage in 1st CR. No ABVD-Plt patient relapsed; 1 ABVD patient relapsed in non-irradiated area. At five years, actuarial survival/relapse-free survival was 96.1/90% and 88.2/100% for ABVD and ABVD-Plt patients, respectively.
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[Comparison between acute myeloblastic leukemia in children and adults]. LA SEMAINE DES HOPITAUX : ORGANE FONDE PAR L'ASSOCIATION D'ENSEIGNEMENT MEDICAL DES HOPITAUX DE PARIS 1977; 53:911-5. [PMID: 197612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The clinical, hematological and therapeutic aspects of 36 cases of acute myeloblastic leukemia in children and 98 cases in adults observed in Algeria are discussed. In Algeria, acute myeloblastic leukemia is more frequent in children than in other populations. In our series there was a very unusual female predominance. Clinically, we observed in children only, 8 cases of chloroma of the orbit. From the hematological point of view, the only difference was a higher incidence of leukopenia and hyperleukocytosis after the age 30 years. The results of VAMP treatment (vincristin, amethopterin, 6-mercaptopurine, and prednisone) are better in children than in adults. But analysis of the results is more interesting if one places the patients in age groups of ten years. The percentage of complete remissions is maximum in the age group 0 to 10years and then falls regularly.
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[1st cases of alpha-thalassemia in Algeria: 12 cases of hemoglobinosis H]. LA SEMAINE DES HOPITAUX : ORGANE FONDE PAR L'ASSOCIATION D'ENSEIGNEMENT MEDICAL DES HOPITAUX DE PARIS 1977; 53:885-9. [PMID: 197607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
These first cases of hemoglobinosis H show that alpha-thalassemia is not a simple curiosity in this part of the Western Mediterranean. They are not localised to a single part of Algeria as the areas from which the patients came were more than 150 km apart. They suggest that the enquiry should be continued by other means to determine the prevalence and pathological incidence.
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[Letter: Comparative study of busulfan and of the combination of busulfan with splenic radiotherapy in the treatment of chronic myeloid leukemias]. LA NOUVELLE PRESSE MEDICALE 1975; 4:2812. [PMID: 1105426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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[Serum complement level in Hodgkin's disease]. NOUVELLE REVUE FRANCAISE D'HEMATOLOGIE 1972; 12:673-81. [PMID: 4120941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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[Acute leukemias in Algeria. Study of 148 cases]. NOUVELLE REVUE FRANCAISE D'HEMATOLOGIE 1971; 11:109-18. [PMID: 4252097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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[Erythroblastopenia during an anemia of folic acid deficiency in pregnancy]. NOUVELLE REVUE FRANCAISE D'HEMATOLOGIE 1971; 11:119-27. [PMID: 4252098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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[Polychemotherapy of acute leukemia in children (27 cases)]. LA TUNISIE MEDICALE 1968; 46:497-501. [PMID: 5270904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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20
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[Viral hepatitis during (heterozygote) minor thalassemia]. LA PRESSE MEDICALE 1967; 75:1893-4. [PMID: 6080909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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[Anemia in the course of rickets (apropos of 50 cases)]. LA TUNISIE MEDICALE 1967; 45:93-105. [PMID: 5595433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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[Anemias in the course of malignant hemopathies (apropos of 250 cases)]. LA TUNISIE MEDICALE 1967; 45:81-91. [PMID: 5595432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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