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31.
The MLL recombinome of acute leukemias. 总被引:4,自引:0,他引:4
C Meyer B Schneider S Jakob S Strehl A Attarbaschi S Schnittger C Schoch M W J C Jansen J J M van Dongen M L den Boer R Pieters M-G Ennas E Angelucci U Koehl J Greil F Griesinger U Zur Stadt C Eckert T Szczepański F K Niggli B W Sch?fer H Kempski H J M Brady J Zuna J Trka L L Nigro A Biondi E Delabesse E Macintyre M Stanulla M Schrappe O A Haas T Burmeister T Dingermann T Klingebiel R Marschalek 《Leukemia》2006,20(5):777-784
Chromosomal rearrangements of the human MLL gene are a hallmark for aggressive (high-risk) pediatric, adult and therapy-associated acute leukemias. These patients need to be identified in order to subject these patients to appropriate therapy regimen. A recently developed long-distance inverse PCR method was applied to genomic DNA isolated from individual acute leukemia patients in order to identify chromosomal rearrangements of the human MLL gene. We present data of the molecular characterization of 414 samples obtained from 272 pediatric and 142 adult leukemia patients. The precise localization of genomic breakpoints within the MLL gene and the involved translocation partner genes (TPGs) was determined and several new TPGs were identified. The combined data of our study and published data revealed a total of 87 different MLL rearrangements of which 51 TPGs are now characterized at the molecular level. Interestingly, the four most frequently found TPGs (AF4, AF9, ENL and AF10) encode nuclear proteins that are part of a protein network involved in histone H3K79 methylation. Thus, translocations of the MLL gene, by itself coding for a histone H3K4 methyltransferase, are presumably not randomly chosen, rather functionally selected. 相似文献
32.
A Attarbaschi G Mann M K?nig M N Dworzak M M Trebo N Mühlegger H Gadner O A Haas 《Leukemia》2004,18(10):1611-1616
The aim of the present study was to determine the frequency and clinical relevance of the most common secondary karyotype abnormalities in TEL/AML1+ B-cell precursor acute lymphoblastic leukemia (ALL) as assessed with fluorescence in situ hybridization (FISH) analyses. Screening of 372 patients who were enrolled in two consecutive Austrian childhood ALL multicenter trials identified 94 (25%) TEL/AML1+ cases. TEL deletions, trisomy 21 and an additional der(21)t(12;21) were detected in 52 (55%), 13 (14%) and 14 (15%) TEL/AML1+ patients, respectively. The 12p aberrations (P=0.001) and near tetraploidy (P=0.045) were more common in TEL/AML1+ patients, whereas the incidence of diploidy, pseudodiploidy, hypodiploidy, low hyperdiploidy, near triploidy, del(6q), chromosome 9 and 11q23 abnormalities was similar among TEL/AML1+ and TEL/AML1- patients. None of the TEL/AML1+ patients had a high hyperdiploid karyotype. Univariate analysis indicated that among TEL/AML1+ patients those with a deletion of the nontranslocated TEL allele had a worse prognosis than those without this abnormality (P=0.034). We concluded that the type and incidence of the most common secondary aberrations in TEL/AML1+ ALL can be conveniently identified with little additional effort during interphase screening with appropriate TEL and AML1 FISH probes. We also provided preliminary evidence that the deletion of the nontranslocated TEL allele may adversely influence the clinical course of TEL/AML1+ ALL. 相似文献
33.
Klein N Sacher J Geiss-Granadia T Mossaheb N Attarbaschi T Lanzenberger R Spindelegger C Holik A Asenbaum S Dudczak R Tauscher J Kasper S 《Psychopharmacology》2007,191(2):333-339
Objectives Previous studies have investigated the occupancy of the serotonin reuptake transporter (SERT) after clinical doses of citalopram
and other selective serotonin reuptake inhibitors. In the present study, the occupancies of SERT after multiple doses of escitalopram
and citalopram were compared using the radioligand [123I]ADAM and single photon emission computed tomography (SPECT).
Methods Fifteen healthy subjects received escitalopram 10 mg/day (n = 6) or citalopram 20 mg/day (n = 9) for a total of 10 days. SERT occupancies in midbrain were determined with SPECT and [123I]ADAM at three different time points: at baseline (no medication) and at 6 and 54 h after last drug intake.
Results At 6 h after the last dose, mean SERT occupancies were 81.5 ± 5.4% (mean±SD) for escitalopram and 64.0 ± 12.7% for citalopram
(p < 0.01). At 54 h after the last dose, mean SERT occupancies were 63.3 ± 12.1% for escitalopram and 49.0 ± 11.7% for citalopram
(p < 0.05). The plasma concentrations of the S-enantiomer were of the same magnitude in both substances. For both drugs, the
elimination rate of the S-enantiomer in plasma was markedly higher than the occupancy decline rate in the midbrain.
Conclusion The significantly higher occupancy of SERT after multiple doses of escitalopram compared to citalopram indicates an increased
inhibition of SERT by escitalopram. The results can also be explained by an attenuating effect of R-citalopram on the occupancy
of S-citalopram at the SERT. 相似文献
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36.
Matthes-Martin S P?tschger U Barr R Martin M Boztug H Klingebiel T Attarbaschi A Eibler W Mann G 《Biology of blood and marrow transplantation》2012,18(10):1533-1539
The overall costs of pediatric stem cell transplantation (SCT), including donor search and costs during the first year post-SCT, were calculated in a cohort of 141 consecutive children undergoing SCT in a single institution. Costs were correlated with patient and transplantation characteristics and with a risk score for transplantation-related mortality. Cost-effectiveness was calculated based on the overall cost per surviving patient. Life-years gained were extrapolated from overall survival, and the costs per expected life-year gained were calculated. The overall median cost was €136,382 (175,815$), with a wide range, of €26,897 (34,679$) to €601,348 (775,343$). Increased costs were significantly associated with age, use of donors other than matched siblings, and advanced disease. There was a strong correlation of costs with a simple transplantation-related mortality risk score; median total costs were €89,550 (115,463$) for a score of 0, €127,349 (164,179$) for a score of 1, €156,578 (201,861$) for a score of 2, and €274,915 (354,499$) for a score of 3 (P < .001). Cost-effectiveness decreased with increasing transplantation-related mortality risk score; costs per survivor increased from €93,209 (120,200$) for a score of 0 to a maximum of €1,216,348 (1,568,579$) for a score of 3. Costs associated with pediatric SCT vary substantially; however, the combination of variables such as age, disease, and donor type is predictive of costs and cost-effectiveness. Costs per life-year gained are within the broadly accepted range in life-threatening hemato-oncologic diseases, even in the most cost-intensive patient cohort. 相似文献
37.
T. Lehrnbecher A. Attarbaschi M. Duerken J. Garbino B. Gruhn U. Kontny S. Lüer R. Phillips J. Scholz H. J. Wagner T. Wiesel A. H. Groll 《European journal of clinical microbiology & infectious diseases》2010,29(8):1043-1045
While a paediatric dosage has not been defined, posaconazole is occasionally being used in children. We conducted a multicentre retrospective survey and identified 15 patients (median age 10 years [range 3.6–17.5]) who received posaconazole salvage therapy for proven (9 patients) or probable (6 patients) invasive fungal infections. Posaconazole was administered for a median of 32 days (range 4–262) at a median dosage of 21 mg/kg (range 4.8–33.3). None of the patients discontinued therapy due to adverse events, which were mostly mild and observed in 11 patients. Complete or partial responses were observed in 4/7 patients with zygomycosis, 3/4 patients with invasive mould infection, 1/2 patients with invasive aspergillosis and 1/2 patients with chronic disseminated candidiasis. We conclude from the data that posaconazole displays favourable safety and tolerance and may be useful for management of individual paediatric patients with invasive infections. 相似文献
38.
Seyed-Javad Pournaghi Farhad Barazandeh Noveyri Hadi Mohammad Doust Ali Ahmadi Andishe Hamedi Jamileh Rahimi 《Nutrition and cancer》2013,65(7):1094-1099
Aim: Esophageal cancer (EC) is considered one of the most common types of cancer in the world. High intake of dietary proteins is suggested to increase EC. This study examined associations between intake of red meats, processed meat, poultry, and fish and the risk of EC.Methods: This hospital-based Case–Control study included 96 people with EC and 187 people without EC from Bojnurd, Iran. Socio-demographic data was collected from all participants at enrollment using general information questionnaire. Dietary intake was assessed using a validated 168 item semi-quantitative food frequency questionnaire.Results: After adjusting for potential confounders, there was a significant association between the consumption of beef (P?=?0.04), processed meats (sausages) (P?=?0.01), and chicken with skin (P?=?0.001) with the risk of EC.Conclusion: We observed a positive association between red meat, processed meats (sausages), chicken with skin and the risk of EC. The use of lamb meat and fish had no significant association with the risk of EC. 相似文献
39.
Simone Schüller Andishe Attarbaschi Angelika Berger Caroline Hutter Katrin Klebermass-Schrehof Manuel Steiner 《Pediatric hematology and oncology》2016,33(7-8):462-467
Objective: To present the diagnostic workup in an extremely low birth weight infant patient with signs of both sepsis and hemophagocytosis. Participants: A preterm infant presented with clinical and laboratory signs of early-onset sepsis including hepatosplenomegaly, thrombocytopenia, direct hyperbilirubinemia, and elevated liver enzymes. Methods: Despite extensive septic workup, no underlying infection was detected. Additional hyperferritinemia and other elevated inflammatory parameters raised the suspicion of a primary or secondary hemophagocytic lymphohistiocytosis (HLH). Results: However, further metabolic analysis yielded a positive result for Gaucher disease (GD) type 2, a rare, but possible trigger of HLH. Conclusions: Our case shows that GD may lead to the picture of a secondary HLH and that a metabolic workup should always be performed in patients in whom primary HLH has been excluded. 相似文献
40.
Mann G Attarbaschi A Burkhardt B Niggli F Klapper W Ludwig WD Schrappe M Zimmermann M Gadner H Reiter A;Berlin-Frankfurt-Münster Group 《British journal of haematology》2007,139(3):443-449
Non-Hodgkin lymphoma (NHL) is rarely observed during infancy and data on its incidence, characteristics and outcome are scarce. The present study aimed to assess the prevalence, clinical presentation and treatment results of all infants who were diagnosed with NHL between October 1986 and December 2002 among 2084 patients treated according to the NHL-BFM (Berlin-Frankfurt-Münster) multicentre trials 86, 90 and 95. We identified 20 (1%) infants with NHL including five with T-cell lymphoblastic lymphoma (T-cell LBL), seven with precursor B-cell LBL (pB-cell LBL), two with a mature Burkitt neoplasm, five with anaplastic large cell lymphoma (ALCL) and one with peripheral T-cell lymphoma (PTCL). The PTCL patient, 3/7 pB-cell LBL and 1/5 ALCL patients relapsed. One patient each from the T-cell LBL and Burkitt lymphoma groups suffered from a second malignancy and one patient each with ALCL and Burkitt leukaemia died from treatment-related toxicity. The 5-year event-free survival rate was 53 +/- 12% for the 20 cases. This study has provided preliminary evidence that infants with NHL have a dismal prognosis and showed that infant NHL differed to lymphomas in older patients with respect to the distribution of gender, histopathologic subtypes as well as the ratio of T- to pB-cell LBL and the frequency of relapses of pB-cell LBL. 相似文献