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Pohlmann A, Bentgens E, Schülke C, Kuron D, Reicherts C, Marx J, Angenendt L, Mikesch JH, Lenz G, Stelljes M, Schliemann C. Pretransplant spleen volume and outcome after hematopoietic stem cell transplantation (HSCT) in patients with acute myeloid leukemia (AML). Ann Hematol 2023; 102:2543-2553. [PMID: 37428201 PMCID: PMC10444671 DOI: 10.1007/s00277-023-05353-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is an effective treatment modality for patients with acute myeloid leukemia (AML). Here, we investigated the predictive value of spleen volume on outcome parameters and engraftment kinetics after HSCT in a large cohort of AML patients. A total of 402 patients who received their first HSCT between January 2012 and March 2019 were included in this retrospective study. Spleen volume was correlated to clinical outcome and engraftment kinetics. Median follow-up was 33.7 months (95% confidence interval [CI], 28.9-37.4 months). Patients were subdivided based on median spleen volume of 238.0 cm3 (range 55.7-2693.5 cm3) into a small spleen volume (SSV) and a large spleen volume (LSV) group. LSV was associated with inferior overall survival (OS) after HSCT (55.7% vs. 66.6% at 2 years; P = 0.009) and higher cumulative incidence of NRM (28.8% vs. 20.2% at 2 years; P = 0.048). The adjusted hazard ratio for NRM in the LSV group was 1.55 (95% CI, 1.03-2.34). Time to neutrophil or platelet engraftment and the occurrence of acute or chronic graft-versus-host disease (GVHD) were not significantly different between both groups. Higher spleen volume at the time of HSCT was independently linked to adverse outcomes such as inferior OS and higher cumulative incidence of NRM in AML patients after HSCT. Engraftment kinetics and GVHD were not associated with spleen volume.
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Affiliation(s)
- Alexander Pohlmann
- Department of Medicine A, University Hospital Münster, Münster, Germany.
| | - Eva Bentgens
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Christoph Schülke
- Department of Clinical Radiology, University Hospital Münster, Münster, Germany
| | - David Kuron
- Department of Medicine II, University Hospital Schleswig-Holstein, 24105, Kiel, Germany
| | | | - Julia Marx
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Linus Angenendt
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | | | - Georg Lenz
- Department of Medicine A, University Hospital Münster, Münster, Germany
| | - Matthias Stelljes
- Department of Medicine A, University Hospital Münster, Münster, Germany
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2
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Lucijanic M, Krecak I, Soric E, Galusic D, Holik H, Perisa V, Moric Peric M, Zekanovic I, Kusec R. Palpable spleen size is differently prognostic in primary and secondary myelofibrosis. Leuk Lymphoma 2023; 64:893-896. [PMID: 36799562 DOI: 10.1080/10428194.2023.2179360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Marko Lucijanic
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
| | - Ivan Krecak
- Department of Internal Medicine, General Hospital Sibenik, Sibenik, Croatia.,University of Rijeka School of Medicine, Rijeka
| | - Ena Soric
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia
| | - Davor Galusic
- Department of Hematology, University Hospital of Split, Split, Croatia.,University of Split School of Medicine, Split, Croatia
| | - Hrvoje Holik
- Department of Internal Medicine, "Dr. Josip Bencevic" General Hospital, Ul. Andrije Stampara, Slavonski Brod, Croatia.,University of Osijek Faculty of Medicine, Osijek, Croatia
| | - Vlatka Perisa
- University of Osijek Faculty of Medicine, Osijek, Croatia.,Department of Hematology, Osijek University Hospital, Osijek, Croatia
| | | | - Ivan Zekanovic
- Department of Internal Medicine, General Hospital Zadar, Zadar, Croatia
| | - Rajko Kusec
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
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Kawano N, Saito N, Yoshida S, Kitanaka A, Shide K, Marutsuka K, Ohshima K, Shimoda K. Immunohistopathological Analysis of Extramedullary Hematopoiesis and Angiogenesis of Spleen in a Case of Primary Myelofibrosis with Huge Splenomegaly. TOHOKU J EXP MED 2022; 256:119-125. [PMID: 35173090 DOI: 10.1620/tjem.256.119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Although splenomegaly is one of the important signs of primary myelofibrosis, the differential diagnosis varies from malignant disorders to benign disorders, including malignant lymphoma and sarcoidosis. The patient was a 67-year-old male who developed anemia and huge splenomegaly. The laboratory findings include human T-cell leukemia virus type 1 (HTLV-1) antibody, elevated soluble interleukin-2 receptor, hypocellular bone marrow, and uptake in the spleen on positron emission tomography/computed tomography scan. Additionally, we performed laparoscopic splenectomy to alleviate the clinical symptoms and to rule out malignant lymphoma. Histological findings revealed extramedullary hematopoiesis, characterized by the presence of erythroid islands and clusters of dysplastic megakaryocytes with increased reticulin fibrosis. Immunohistochemical staining revealed the presence of von Willebrand factor, dysplastic megakaryocytes, myeloperoxidase, myeloid-predominant proliferations, and CD34 immature myeloid cells. Furthermore, regarding the angiogenesis in the spleen, the endothelial cells of the capillaries and those of the sinusoidal vascular system that were reactive for CD34 and CD8, respectively, were also detected. Consequently, the histological findings revealed both extramedullary hematopoiesis and angiogenesis in spleen. Based on the histological findings and the identification of Janus activating kinase 2 (JAK-2) mutation, the patient was diagnosed with primary myelofibrosis. Splenectomy reduces blood transfusion requirements after surgery. The patient was carefully followed-up without further treatments. Thus, primary myelofibrosis is the crucial differential diagnosis of huge splenomegaly.
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Affiliation(s)
- Noriaki Kawano
- Department of Internal Medicine, Miyazaki Prefectural Miyazaki Hospital
| | - Noriyuki Saito
- Department of Hematology, Saiseikai Fukuoka General Hospital
| | - Shuro Yoshida
- Department of Internal Medicine, Miyazaki Prefectural Miyazaki Hospital
| | - Akira Kitanaka
- Division of Hematology, Diabetes, and Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki
| | - Kotaro Shide
- Division of Hematology, Diabetes, and Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki
| | | | - Koichi Ohshima
- Department of Pathology, Kurume University School of Medicine
| | - Kazuya Shimoda
- Division of Hematology, Diabetes, and Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki
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Zulkeflee RH, Zulkafli Z, Johan MF, Husin A, Islam MA, Hassan R. Clinical and Laboratory Features of JAK2 V617F, CALR, and MPL Mutations in Malaysian Patients with Classical Myeloproliferative Neoplasm (MPN). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:7582. [PMID: 34300032 PMCID: PMC8307561 DOI: 10.3390/ijerph18147582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/11/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022]
Abstract
Mutations of JAK2V617F, CALR, and MPL genes confirm the diagnosis of myeloproliferative neoplasm (MPN). This study aims to determine the genetic profile of JAK2V617F, CALR exon 9 Type 1 (52 bp deletion) and Type 2 (5 bp insertion), and MPL W515 L/K genes among Malaysian patients and correlate these mutations with clinical and hematologic parameters in MPN. Mutations of JAK2V617F, CALR, and MPL were analyzed in 159 Malaysian patients using allele-specific polymerase chain reaction, including 76 polycythemia vera (PV), 41 essential thrombocythemia (ET), and 42 primary myelofibrosis (PMF) mutations, and the demographics of the patients were retrieved. The result showed that 73.6% JAK2V617F, 5.66% CALR, and 27.7% were triple-negative mutations. No MPL W515L/K mutation was detected. In ET and PMF, the predominance type was the CALR Type 1 mutation. In JAK2V617F mutant patients, serum LDH was significantly higher in PMF compared to PV and ET. PV has a higher risk of evolving to post PV myelofibrosis compared to ET. A thrombotic event at initial diagnosis of 40.9% was high compared to global incidence. Only one PMF patient had a CALR mutation that transformed to acute myeloid leukemia. JAK2V617F and CALR mutations play an important role in diagnostics. Hence, every patient suspected of having a myeloproliferative neoplasm should be screened for these mutations.
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Affiliation(s)
- Razan Hayati Zulkeflee
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (R.H.Z.); (M.F.J.); (M.A.I.)
- Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
| | - Zefarina Zulkafli
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (R.H.Z.); (M.F.J.); (M.A.I.)
- Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
| | - Muhammad Farid Johan
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (R.H.Z.); (M.F.J.); (M.A.I.)
| | - Azlan Husin
- Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
- Department of Internal Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia
| | - Md Asiful Islam
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (R.H.Z.); (M.F.J.); (M.A.I.)
| | - Rosline Hassan
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (R.H.Z.); (M.F.J.); (M.A.I.)
- Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
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Jiang W, Li Y, Zhang S, Kong G, Li Z. Association between cellular immune response and spleen weight in mice with hepatocellular carcinoma. Oncol Lett 2021; 22:625. [PMID: 34267817 PMCID: PMC8258616 DOI: 10.3892/ol.2021.12886] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 05/24/2021] [Indexed: 12/29/2022] Open
Abstract
The spleen is an important site for extramedullary hematopoiesis and tumor immunotolerance. Spleen weight varies with tumor progression and may be a predictor of tumor recurrence. However, to the best of our knowledge, the association between spleen weight and tumor progression remains unclear. The present study revealed a novel role for the spleen in predicting the cellular immune response in tumor-bearing mice. A murine H22 subcutaneous hepatoma model was established. The spleen weight and tumor weight were measured. The proportion of immune cells in peripheral blood and spleen were detected by flow cytometry. The results demonstrated that the spleen weight of tumor-bearing mice at day 21 was higher than that of the controls. In addition, spleen weight was identified to be positively correlated with tumor weight. The percentages of CD4+ and CD8+ T lymphocytes in the spleen were decreased at day 21 after tumor cell inoculation, while those of monocytic-like myeloid-derived suppressor cells (M-MDSCs) and CD11b+F4/80+ macrophages were increased at day 21 after tumor cell inoculation. Similarly, the percentage of polymorphonuclear-like MDSCs (PMN-MDSCs) in the spleen of tumor-bearing mice was increased at days 7, 14 and 21 after tumor cell inoculation. Notably, spleen weight was negatively correlated with the percentages of CD4+ and CD8+ T lymphocytes in the spleen, although spleen and tumor weight were positively correlated with the percentages of M-MDSCs and PMN-MDSCs in the spleen. Similarly, the percentages of CD8+ T lymphocytes in the peripheral blood were decreased, and programmed cell death protein 1 expression on CD8+ T lymphocytes was increased at day 21 after tumor cell inoculation. Furthermore, the percentages of M-MDSCs were increased at day 21 and PMN-MDSCs in the peripheral blood were increased at days 7, 14 and 21 after tumor cell inoculation. Additionally, spleen and tumor weight were also positively correlated with the percentages of M-MDSC and PMN-MDSCs in the peripheral blood of tumor-bearing mice. Collectively, the findings of the present study suggested that spleen weight may be a predictor of tumor prognosis, since it was directly correlated with tumor weight and the percentages of M-MDSC and PMN-MDSCs in tumor-bearing mice.
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Affiliation(s)
- Wei Jiang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.,National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yu Li
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.,Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Shuqun Zhang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Guangyao Kong
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Zongfang Li
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.,National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.,Key Laboratory of Environment and Disease-Related Gene Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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Schranz T, Klaus J, Kratzer W, Schmidberger J, Güthle M. A comparison of spleen size measured by ultrasound in a random population sample and a matched sample of patients at a university hospital, and the determination of normal values and influencing factors. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2021; 59:438-445. [PMID: 33752244 DOI: 10.1055/a-1404-4097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES This study aimed to compare spleen sizes in a hospital and a population sample using ultrasound and define normal values and factors influencing spleen size. METHODS Both samples' spleen sizes (n = 1520) were measured using ultrasound under the same conditions. Blood counts and other laboratory parameters were determined under the same conditions in both samples. RESULTS In the hospital sample (n = 760), the mean spleen size was 114.7 mm, and in the population sample (n = 760), it was 99.1 mm. In both, spleen size in men was significantly higher than in women (p < 0.0001) and influenced by body height, weight, and BMI (body mass index) (p < 0.0001). In the hospital sample, there was a correlation with higher values for ALT (p = 0.0160), AST (p = 0.0394), AP (p = 0.0482), and ferritin (p = 0.0008) and lower values for HDL (p = 0.0091) and thrombocytes (p < 0.0001). In the multivariate analysis, higher values for AP (p = 0.0059) and lower values for hemoglobin (p = 0.0014) and thrombocytes (p = 0.0001) were found. Stratified for sex (men, women), spleen size increased with higher values for ALT (p = 0.0116, p = 0.0113), AST (p = 0.0014, p = 0.0113), and AP (p = 0.0001, p = 0.0012), and with lower values of hemoglobin (p = 0.0057, p = 0.0016), thrombocytes (p < 0.0001, p = 0.0003), and albumin (p = 0.0029, p = 0.0432). In women, there was a discordant correlation with red blood cells (p = 0.0005) and a concordant correlation with GGT (p = 0.0241), and in men discordant correlations with cholesterol (p = 0.0010) and HDL (p = 0.0404). CONCLUSIONS The already proven impact of anthropometric data on spleen size was confirmed. The role of laboratory values should be further analyzed.
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Affiliation(s)
| | - Jochen Klaus
- Klinik für Innere Medizin I, Universitätsklinikum Ulm, Ulm
| | | | | | - Melanie Güthle
- Klinik für Innere Medizin I, Universitätsklinikum Ulm, Ulm
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Jungmann F, Brodehl S, Buhl R, Mildenberger P, Schömer E, Düber C, Pinto Dos Santos D. Workflow-centred open-source fully automated lung volumetry in chest CT. Clin Radiol 2019; 75:78.e1-78.e7. [PMID: 31587801 DOI: 10.1016/j.crad.2019.08.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 08/20/2019] [Indexed: 01/06/2023]
Abstract
AIM To develop a robust open-source method for fully automated extraction of total lung capacity (TLC) from computed tomography (CT) images and to demonstrate its integration into the clinical workflow. MATERIALS AND METHODS Using only open-source software, an algorithm was developed based on a region-growing method that does not require manual interaction. Lung volumes calculated from reconstructions with different kernels (TLCCT) were assessed. To validate the algorithm calculations, the results were correlated to TLC measured by pulmonary function testing (TLCPFT) in a subgroup of patients for which this information was available within 3 days of the CT examination. RESULTS A total of 288 patients were analysed retrospectively. Manual review revealed poor segmentation results in 13 (4.5%) patients. In the validation subgroup, the correlation between TLCCT and TLCPFT was r=0.87 (p<0.001). Measurements showed excellent agreement between the two reconstruction kernels with an intraclass correlation coefficient (ICC) of 0.99. Calculation of the volumes took an average of 5 seconds (standard deviation: 3.72 seconds). Integration of the algorithm into the departments of the PACS environment was successful. A DICOM-encapsulated PDF document with measurements and an overlay of the segmentation results was sent to the PACS to allow the radiologists to detect false measurements. CONCLUSIONS The algorithm developed allows fast and fully automated calculation of lung volume without any additional input from the radiologist. The algorithm delivers excellent segmentation in >95% of cases with significant positive correlations between lung volume on CT and TLC on PFT.
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Affiliation(s)
- F Jungmann
- Department of Diagnostic and Interventional Radiology of the University Medical Center of the Johannes Gutenberg-University Mainz, Germany.
| | - S Brodehl
- Institute of Computer Science of the Johannes Gutenberg-University Mainz, Germany
| | - R Buhl
- Department of Internal Medicine III (Hematology, Oncology, Pneumology) of the University Medical Center of the Johannes Gutenberg-University Mainz, Germany
| | - P Mildenberger
- Department of Diagnostic and Interventional Radiology of the University Medical Center of the Johannes Gutenberg-University Mainz, Germany
| | - E Schömer
- Institute of Computer Science of the Johannes Gutenberg-University Mainz, Germany
| | - C Düber
- Department of Diagnostic and Interventional Radiology of the University Medical Center of the Johannes Gutenberg-University Mainz, Germany
| | - D Pinto Dos Santos
- Department of Diagnostic and Interventional Radiology of the University Medical Center of the Johannes Gutenberg-University Mainz, Germany; Department of Diagnostic and Interventional Radiology of the University Hospital of Cologne, Germany
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Krauth MT, Burgstaller S, Buxhofer-Ausch V, Gastl G, Geissler K, Keil F, Krippl P, Melchardt T, Petzer A, Rumpold H, Sliwa T, Wöhrer S, Wölfler A, Gisslinger H. Ruxolitinib therapy for myelofibrosis in Austria : Consensus on therapy management. Wien Klin Wochenschr 2018; 130:495-504. [PMID: 30043249 PMCID: PMC6132876 DOI: 10.1007/s00508-018-1365-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/04/2018] [Indexed: 12/19/2022]
Abstract
The oral Janus associated kinase (JAK1/2) inhibitor ruxolitinib has been available for treatment of patients with intermediate or high-risk myelofibrosis in Europe since 2012. Since its introduction, the expertise of prescribing doctors with respect to ruxolitinib function, efficacy and adverse effects has consistently been augmented, resulting in therapy modalities that are better tailored to individual patients as well as in increased safety of the treatment. The present consensus on ruxolitinib therapy management has been elaborated by Austrian experts in myeloproliferative neoplasms in line with international treatment guidelines. Our recommendations aim to contribute to an improved management of patients with myelofibrosis treated with ruxolitinib.
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Affiliation(s)
- Maria-Theresa Krauth
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University Vienna, Vienna, Austria.
| | - Sonja Burgstaller
- Department of Internal Medicine IV, Klinikum Wels-Grieskirchen, Wels, Austria
| | - Veronika Buxhofer-Ausch
- Department of Internal Medicine I, Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz-Elisabethinen, Linz, Austria
| | - Günther Gastl
- Department of Internal Medicine V, Division Hematology and Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Klaus Geissler
- Fifth Medical Department, Hospital Hietzing, Vienna, Austria
| | - Felix Keil
- Third Medical Department, Hanusch Hospital, Vienna, Austria
| | - Peter Krippl
- Department of Internal Medicine, LKH Fürstenfeld, Krankenhausverbund Feldbach, Fürstenfeld, Austria
| | - Thomas Melchardt
- Third Medical Department, Division Hematology and Medical Oncology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Andreas Petzer
- Department of Internal Medicine I, Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz-Elisabethinen, Linz, Austria
| | - Holger Rumpold
- Internal Medicine II, Medical Oncology, Hematology, Gastroenterology and Rheumatology, Academic Teaching Hospital Feldkirch, Feldkirch, Austria
| | - Thamer Sliwa
- Third Medical Department, Hanusch Hospital, Vienna, Austria
| | - Stefan Wöhrer
- Permedio Center for Personalized Medicine and Sanatorium Hera Vienna, Vienna, Austria
| | - Albert Wölfler
- Division of Hematology, Medical University of Graz, Graz, Austria
| | - Heinz Gisslinger
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University Vienna, Vienna, Austria
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9
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Understanding Splenomegaly in Myelofibrosis: Association with Molecular Pathogenesis. Int J Mol Sci 2018; 19:ijms19030898. [PMID: 29562644 PMCID: PMC5877759 DOI: 10.3390/ijms19030898] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/16/2018] [Accepted: 03/17/2018] [Indexed: 12/31/2022] Open
Abstract
Myelofibrosis (MF) is a clinical manifestation of chronic BCR-ABL1-negative chronic myeloproliferative neoplasms. Splenomegaly is one of the major clinical manifestations of MF and is directly linked to splenic extramedullary hematopoiesis (EMH). EMH is associated with abnormal trafficking patterns of clonal hematopoietic cells due to the dysregulated bone marrow (BM) microenvironment leading to progressive splenomegaly. Several recent data have emphasized the role of several cytokines for splenic EMH. Alteration of CXCL12/CXCR4 pathway could also lead to splenic EMH by migrated clonal hematopoietic cells from BM to the spleen. Moreover, low Gata1 expression was found to be significantly associated with the EMH. Several gene mutations were found to be associated with significant splenomegaly in MF. In recent data, JAK2V617F homozygous mutation was associated with a larger spleen size. In other data, CALR mutations in MF were signigicantly associated with longer larger splenomegaly-free survivals than others. In addition, MF patients with ≥1 mutations in AZXL1, EZH1 or IDH1/2 had significantly low spleen reduction response in ruxolitinib treatment. Developments of JAK inhibitors, such as ruxolitinib, pacritinib, momelotinib, and febratinib enabled the effective management in MF patients. Especially, significant spleen reduction responses of the drugs were demonstrated in several randomized clinical studies, although those could not eradicate allele burdens of MF.
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10
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Shimomura Y, Hara M, Katoh D, Hashimoto H, Ishikawa T. Enlarged spleen is associated with low neutrophil and platelet engraftment rates and poor survival after allogeneic stem cell transplantation in patients with acute myeloid leukemia and myelodysplastic syndrome. Ann Hematol 2018; 97:1049-1056. [DOI: 10.1007/s00277-018-3278-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 02/10/2018] [Indexed: 10/18/2022]
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