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Miyauchi J. The hematopoietic microenvironment of the fetal liver and transient abnormal myelopoiesis associated with Down syndrome: A review. Crit Rev Oncol Hematol 2024; 199:104382. [PMID: 38723838 DOI: 10.1016/j.critrevonc.2024.104382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/21/2024] [Accepted: 05/02/2024] [Indexed: 05/23/2024] Open
Abstract
Transient abnormal myelopoiesis (TAM) in neonates with Down syndrome is a distinct form of leukemia or preleukemia that mirrors the hematological features of acute megakaryoblastic leukemia. However, it typically resolves spontaneously in the early stages. TAM originates from fetal liver (FL) hematopoietic precursor cells and emerges due to somatic mutations in GATA1 in utero. In TAM, progenitor cells proliferate and differentiate into mature megakaryocytes and granulocytes. This process occurs both in vitro, aided by hematopoietic growth factors (HGFs) produced in the FL, and in vivo, particularly in specific anatomical sites like the FL and blood vessels. The FL's hematopoietic microenvironment plays a crucial role in TAM's pathogenesis and may contribute to its spontaneous regression. This review presents an overview of current knowledge regarding the unique features of TAM in relation to the FL hematopoietic microenvironment, focusing on the functions of HGFs and the pathological features of TAM.
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Affiliation(s)
- Jun Miyauchi
- Department of Diagnostic Pathology, Saitama City Hospital, Saitama, Saitama-ken, Japan.
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2
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Abstract
PURPOSE OF THE REVIEW Infant leukemia is a rare, distinct subgroup of pediatric acute leukemias diagnosed in children under 1 year of age and characterized by unique, aggressive biology. Here, we review its clinical presentation, underlying molecular biology, current treatment strategies, and novel therapeutic approaches. RECENT FINDINGS Infant leukemias are associated with high-risk molecular features and high rates of chemotherapy resistance. International collaborative clinical trials have led to better understanding of the underlying molecular biology, refined risk-based stratification, and investigated the use of hematopoietic stem cell transplantation. However, intensification of chemotherapy has failed to improve outcomes, and current regimens are associated with significant treatment-related and long-term toxicities. Infants with leukemia remain a challenging group to treat. We must continue collaborative efforts to move beyond traditional cytotoxic chemotherapy, incorporate molecularly targeted strategies and immunotherapy, and increase access to clinical trials to improve outcomes for this high-risk group of patients.
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Pruteanu DP, Olteanu DE, Cosnarovici R, Mihut E, Nagy V. Genetic predisposition in pediatric oncology. Med Pharm Rep 2020; 93:323-334. [PMID: 33225257 PMCID: PMC7664724 DOI: 10.15386/mpr-1576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/10/2020] [Accepted: 07/25/2020] [Indexed: 11/23/2022] Open
Abstract
Identifying patients with a genetic predisposition for developing malignant tumors has a significant impact on both the patient and family. Recognition of genetic predisposition, before diagnosing a malignant pathology, may lead to early diagnosis of a neoplasia. Recognition of a genetic predisposition syndrome after the diagnosis of neoplasia can result in a change of treatment plan, a specific follow-up of adverse treatment effects and, of course, a long-term follow-up focusing on the early detection of a second neoplasia. Responsible for genetic syndromes that predispose individuals to malignant pathology are germline mutations. These mutations are present in all cells of conception, they can be inherited or can occur de novo. Several mechanisms of inheritance are described: Mendelian autosomal dominant, Mendelian autosomal recessive, X-linked patterns, constitutional chromosomal abnormality and non-Mendelian inheritance. In the following review we will present the most important genetic syndromes in pediatric oncology.
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Affiliation(s)
- Doina Paula Pruteanu
- Department of Pediatric Oncology, "Prof. Dr. Ion Chiricuta" Oncology Institute, Cluj-Napoca, Romania.,Department of Radiation Oncology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Diana Elena Olteanu
- Department of Pediatric Oncology, "Prof. Dr. Ion Chiricuta" Oncology Institute, Cluj-Napoca, Romania
| | - Rodica Cosnarovici
- Department of Pediatric Oncology, "Prof. Dr. Ion Chiricuta" Oncology Institute, Cluj-Napoca, Romania
| | - Emilia Mihut
- Department of Pediatric Oncology, "Prof. Dr. Ion Chiricuta" Oncology Institute, Cluj-Napoca, Romania
| | - Viorica Nagy
- Department of Pediatric Oncology, "Prof. Dr. Ion Chiricuta" Oncology Institute, Cluj-Napoca, Romania.,Department of Radiation Oncology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Abstract
Acute megakaryoblastic leukemia (AMKL) is a rare malignancy affecting megakaryocytes, platelet-producing cells that reside in the bone marrow. Children with Down syndrome (DS) are particularly prone to developing the disease and have a different age of onset, distinct genetic mutations, and better prognosis as compared with individuals without DS who develop the disease. Here, we discuss the contributions of chromosome 21 genes and other genetic mutations to AMKL, the clinical features of the disease, and the differing features of DS- and non-DS-AMKL. Further studies elucidating the role of chromosome 21 genes in this disease may aid our understanding of how they function in other types of leukemia, in which they are frequently mutated or differentially expressed. Although researchers have made many insights into understanding AMKL, much more remains to be learned about its underlying molecular mechanisms.
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Affiliation(s)
- Maureen McNulty
- Northwestern University, Division of Hematology/Oncology, Chicago, Illinois 60611, USA
| | - John D Crispino
- Northwestern University, Division of Hematology/Oncology, Chicago, Illinois 60611, USA
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Sas V, Blag C, Zaharie G, Puscas E, Lisencu C, Andronic-Gorcea N, Pasca S, Petrushev B, Chis I, Marian M, Dima D, Teodorescu P, Iluta S, Zdrenghea M, Berindan-Neagoe I, Popa G, Man S, Colita A, Stefan C, Kojima S, Tomuleasa C. Transient leukemia of Down syndrome. Crit Rev Clin Lab Sci 2019; 56:247-259. [PMID: 31043105 DOI: 10.1080/10408363.2019.1613629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Childhood leukemia is mostly a "developmental accident" during fetal hematopoiesis and may require multiple prenatal and postnatal "hits". The World Health Organization defines transient leukemia of Down syndrome (DS) as increased peripheral blood blasts in neonates with DS and classifies this type of leukemia as a separate entity. Although it was shown that DS predisposes children to myeloid leukemia, neither the nature of the predisposition nor the associated genetic lesions have been defined. Acute myeloid leukemia of DS is a unique disease characterized by a long pre-leukemic, myelodysplastic phase, unusual chromosomal findings and a high cure rate. In the present manuscript, we present a comprehensive review of the literature about clinical and biological findings of transient leukemia of DS (TL-DS) and link them with the genetic discoveries in the field. We address the manuscript to the pediatric generalist and especially to the next generation of pediatric hematologists.
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Affiliation(s)
- Valentina Sas
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania.,b Department of Pediatrics , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Cristina Blag
- b Department of Pediatrics , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Gabriela Zaharie
- c Department of Neonatology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Emil Puscas
- d Department of Surgery , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Cosmin Lisencu
- d Department of Surgery , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Nicolae Andronic-Gorcea
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Sergiu Pasca
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Bobe Petrushev
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Irina Chis
- e Department of Physiology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Mirela Marian
- f Department of Hematology , Ion Chiricuta Clinical Cancer Center , Cluj Napoca , Romania
| | - Delia Dima
- f Department of Hematology , Ion Chiricuta Clinical Cancer Center , Cluj Napoca , Romania
| | - Patric Teodorescu
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Sabina Iluta
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Mihnea Zdrenghea
- f Department of Hematology , Ion Chiricuta Clinical Cancer Center , Cluj Napoca , Romania
| | - Ioana Berindan-Neagoe
- g MedFuture Research Center for Advanced Medicine , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Gheorghe Popa
- b Department of Pediatrics , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Sorin Man
- b Department of Pediatrics , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
| | - Anca Colita
- h Department of Pediatrics , Carol Davila University of Medicine and Pharmacy , Bucharest , Romania.,i Department of Pediatrics , Fundeni Clinical Institute , Bucharest , Romania
| | - Cristina Stefan
- j African Organization for Research and Training in Cancer , Cape Town , South Africa
| | - Seiji Kojima
- k Department of Pediatrics , Nagoya University Graduate School of Medicine , Nagoya , Japan.,l Center for Advanced Medicine and Clinical Research , Nagoya University Hospital , Nagoya , Japan
| | - Ciprian Tomuleasa
- a Department of Hematology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania.,f Department of Hematology , Ion Chiricuta Clinical Cancer Center , Cluj Napoca , Romania.,m Research Center for Functional Genomics and Translational Medicine , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj Napoca , Romania
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Hwang I, Yang S, Cheon E, Hwang G, Jung HJ, Lee JH, Park MS, Park JE. Differences in Clinical Characteristics of Transient Myeloproliferative Disease and Leukemia in Down Syndrome: A Single University Hospital Study. CLINICAL PEDIATRIC HEMATOLOGY-ONCOLOGY 2017. [DOI: 10.15264/cpho.2017.24.1.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Inchan Hwang
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Saemi Yang
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Eunjae Cheon
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Gumbich Hwang
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Hyun Joo Jung
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Jang Hoon Lee
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Moon Sung Park
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Jun Eun Park
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
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Yin L, Lovell MA, Wilson ML, Wei Q, Liang X. Distinct GATA1 Point Mutations in Monozygotic Twins With Down Syndrome and Transient Abnormal Myelopoiesis From a Triplet Pregnancy: A Case Report and Review of Literature. Am J Clin Pathol 2016; 146:753-759. [PMID: 28028114 DOI: 10.1093/ajcp/aqw190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Down syndrome (DS)-associated transient abnormal myelopoiesis (TAM) or acute megakaryoblastic leukemia (AMKL) in monozygotic twins is exceedingly rare and has not been well characterized. METHODS We describe a unique case of monozygotic twins with simultaneous TAM from a triplet pregnancy at 34 weeks' gestation. Previously reported cases of TAM and DS-AMKL in monozygotic twins have been reviewed to compare with our cases. The current concept of a sequential multistep process in leukemogenesis and disease evolution of TAM into DS-AMKL through the collaboration among trisomy 21, GATA1, and other gene mutations is also reviewed. RESULTS Distinct GATA1 mutations are identified in our neonate twins with TAM from a triplet pregnancy, whereas precisely identical GATA1 mutations have been detected in all three monozygotic DS twins reported in the literature. CONCLUSIONS Identical GATA1 mutations in cases of monozygotic twins are likely derived from twin-twin transmission. Distinct GATA1 mutations identified in our neonate twins with TAM provide unequivocal evidence of independent intra-utero GATA1 mutations, a completely different mechanism of development of TAM in monozygotic twins from previously reported cases. Interaction of trisomy 21 and GATA1 mutation produces TAM, but additional gene mutations are required for TAM to transform into DS-AMKL.
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Affiliation(s)
- Liqun Yin
- From the Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora
| | - Mark A Lovell
- From the Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora
- Department of Pathology,, Denver Health Medical Center, Denver, CO
| | - Michael L Wilson
- From the Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora
- Department of Pathology, Children's Hospital Colorado, Anschutz Medical Campus, Aurora
| | - Qi Wei
- Department of Pathology, Children's Hospital Colorado, Anschutz Medical Campus, Aurora
| | - Xiayuan Liang
- From the Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora
- Department of Pathology, Children's Hospital Colorado, Anschutz Medical Campus, Aurora
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8
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Rozen L, Huybrechts S, Dedeken L, Heijmans C, Dessars B, Heimann P, Lambert F, Noubouossie DF, Ferster A, Demulder A. Transient leukemia in a newborn without Down syndrome: case report and review of the literature. Eur J Pediatr 2014; 173:1643-7. [PMID: 24253371 DOI: 10.1007/s00431-013-2163-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 09/18/2013] [Indexed: 12/20/2022]
Abstract
UNLABELLED Transient neonatal leukemia occurs almost exclusively in Down syndrome babies. We report here the unusual case of a newborn without Down syndrome who presented neonatal transient leukemia and who achieved spontaneously complete remission. Trisomy 21 and GATA1 mutation were both present in leukemic cells. While close follow-up is advised since true leukemia may develop later, the patient is still in remission for 2.5 years. We performed a literature review of 15 other similar cases. CONCLUSION Our case of transient leukemia without Down syndrome and the literature review highlight the important role of trisomy 21 and GATA1 mutation in the development of transient neonatal leukemia.
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Affiliation(s)
- Laurence Rozen
- Laboratory of Hematology and Haemostasis, CHU-Brugmann, Université Libre de Bruxelles (ULB), Place Van Gehuchten 4, 1020, Brussels, Belgium,
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9
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Bombery M, Vergilio JA. Transient Abnormal Myelopoiesis in Neonates: GATA Get the Diagnosis. Arch Pathol Lab Med 2014; 138:1302-6. [DOI: 10.5858/arpa.2014-0304-cc] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Transient abnormal myelopoiesis occurs exclusively in patients with Down syndrome (constitutional trisomy 21), manifests in the neonatal period, and is characterized by circulating megakaryoblasts with varied degrees of multisystem organ involvement. In most cases, this process resolves spontaneously by 3 to 6 months of age, but for some, the disease can be fatal. Affected patients are particularly prone to develop acute megakaryoblastic leukemia in early childhood. Somatic GATA1 mutations are believed to be pivotal in the development of transient abnormal myelopoiesis and have proven to be a marker of clonal identity in its evolution to megakaryoblastic leukemia. We describe a study case of transient abnormal myelopoiesis and review the clinical manifestations, laboratory features, natural history, molecular genetics, and postulated disease pathogenesis of this disorder.
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Affiliation(s)
- Melissa Bombery
- From the Department of Pathology, University of Michigan Health System, Ann Arbor
| | - Jo-Anne Vergilio
- From the Department of Pathology, University of Michigan Health System, Ann Arbor
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10
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Natural history of transient myeloproliferative disorder clinically diagnosed in Down syndrome neonates: a report from the Children's Oncology Group Study A2971. Blood 2011; 118:6752-9; quiz 6996. [PMID: 21849481 DOI: 10.1182/blood-2011-04-350017] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Transient myeloproliferative disorder (TMD), restricted to newborns with trisomy 21, is a megakaryocytic leukemia that although lethal in some is distinguished by its spontaneous resolution. Later development of acute myeloid leukemia (AML) occurs in some. Prospective enrollment (n = 135) elucidated the natural history in Down syndrome (DS) patients diagnosed with TMD via the use of uniform monitoring and intervention guidelines. Prevalent at diagnosis were leukocytosis, peripheral blast exceeding marrow blast percentage, and hepatomegaly. Among those with life-threatening symptoms, most (n = 29/38; 76%) received intervention therapy until symptoms abated and then were monitored similarly. Organomegaly with cardiopulmonary compromise most frequently led to intervention (43%). Death occurred in 21% but only 10% were attributable to TMD (intervention vs observation patients: 13/14 vs 1/15 because of TMD). Among those solely observed, peripheral blasts and all other TMD symptoms cleared at a median of 36 and 49 days from diagnosis, respectively. On the basis of the diagnostic clinical findings of hepatomegaly with or without life-threatening symptoms, 3 groups were identified with differing survival: low risk with neither finding (38%), intermediate risk with hepatomegaly alone (40%), and high risk with both (21%; overall survival: 92% ± 8%, 77% ± 12%, and 51% ± 19%, respectively; P ≤ .001). Among all, AML subsequently occurred in 16% at a median of 441 days (range, 118-1085 days). The trial is registered at http://www.clinicaltrials.gov as NCT00003593.
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11
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Analysis of GATA1 mutations in Down syndrome transient myeloproliferative disorder and myeloid leukemia. Blood 2011; 118:2222-38. [PMID: 21715302 DOI: 10.1182/blood-2011-03-342774] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Children with Down syndrome (DS) up to the age of 4 years are at a 150-fold excess risk of developing myeloid leukemia (ML-DS). Approximately 4%-5% of newborns with DS develop transient myeloproliferative disorder (TMD). Blast cell structure and immunophenotype are similar in TMD and ML-DS. A mutation in the hematopoietic transcription factor GATA1 is present in almost all cases. Here, we show that simple techniques detect GATA1 mutations in the largest series of TMD (n = 134; 88%) and ML-DS (n = 103; 85%) cases tested. Furthermore, no significant difference in the mutational spectrum between the 2 disorders was seen. Thus, the type of GATA1 sequence mutation is not a reliable tool and is not prognostic of which patients with TMD are probable to develop ML-DS.
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12
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KIM DW, KIM HR, SHIN MG, BAEK HJ, KOOK H, HWANG TJ, SHIN JH, SUH SP, RYANG DW. Distinctive hematological abnormalities in East Asian neonates and children with down syndrome. Int J Lab Hematol 2011; 33:369-77. [DOI: 10.1111/j.1751-553x.2011.01299.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Inaba H, Londero M, Maurer SH, Onciu M, Ge Y, Taub JW, Rubnitz JE, Raimondi SC. Acute megakaryoblastic leukemia without GATA1 mutation after transient myeloproliferative disorder in an infant without Down syndrome. J Clin Oncol 2011; 29:e230-3. [PMID: 21205752 DOI: 10.1200/jco.2010.32.3634] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Hiroto Inaba
- St Jude Children's Research Hospital, Memphis, TN, USA
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Akdag A, Tunç B, Oğuz S, Dilli D, Dilmen U. A newborn with Down syndrome-transient myeloproliferative disorder. J Perinat Med 2010; 38:445-7. [PMID: 20443668 DOI: 10.1515/jpm.2010.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Shin MG, Choi HW, Kim HR, Kim MJ, Baek HJ, Han DK, Kook H, Hwang TJ, Kim HJ, Kim SH, Shin JH, Suh SP, Ryang DW. Tetrasomy 21 as a sole acquired abnormality without GATA1 gene mutation in pediatric acute megakaryoblastic leukemia: A case report and review of the literature. Leuk Res 2008; 32:1615-9. [PMID: 18372039 DOI: 10.1016/j.leukres.2008.02.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 02/01/2008] [Accepted: 02/09/2008] [Indexed: 10/22/2022]
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Abstract
This is the report of a newborn with Down syndrome diagnosed with transient myeloproliferative disorder (TMD) that required chemotherapy on the first day of life. Children with Down syndrome have a 10- to 20-fold increased risk of developing TMD. TMD is characterized by an uncontrolled proliferation of myeloblasts in the infant's peripheral blood and bone marrow. In most instances, this unique disorder has the ability to spontaneously "turn off" the overproliferation and enter a state of remission. Only supportive care is recommended for TMD during the first months of life unless the clinical condition requires intervention. As more cases of this baffling disorder are presented, it is important to share our experience to aid in management and diagnosis.
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Muntean AG, Ge Y, Taub JW, Crispino JD. Transcription factor GATA-1 and Down syndrome leukemogenesis. Leuk Lymphoma 2007; 47:986-97. [PMID: 16840187 DOI: 10.1080/10428190500485810] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Mutations in transcription factors constitute one means by which normal hematopoietic progenitors are converted to leukemic stem cells. Recently, acquired mutations in the megakaryocytic regulator GATA1 have been found in essentially all cases of acute megakaryoblastic leukemia (AMkL) in children with Down syndrome and in the closely related malignancy transient myeloproliferative disorder. In all cases, mutations in GATA1 lead to the expression of a shorter isoform of GATA-1, named GATA-1s. Because GATA-1s retains both DNA binding zinc fingers, but is missing the N-terminal transactivation domain, it has been predicted that the inability of GATA-1s to regulate its normal class of megakaryocytic target genes is the mechanism by which mutations in GATA1 contribute to the disease. Indeed, several recent reports have confirmed that GATA-1s fails to properly regulate the growth of megakaryocytic precursors, likely through aberrant transcriptional regulation. Although the specific target genes of GATA-1 mis-regulated by GATA-1s that drive this abnormal growth remain undefined, multiple candidate genes have been identified via gene array studies. Finally, the inability of GATA-1s to promote expression of important metabolic genes, such as cytadine deaminase, likely contributes to the remarkable hypersensitivity of AMkL blasts to cytosine arabinoside. Future studies to define the entire class of genes dysregulated by mutations in GATA1 will provide important insights into the etiology of these malignancies.
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Affiliation(s)
- Andrew G Muntean
- Ben May Institute for Cancer Research, University of Chicago, IL 60637, USA
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18
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Abstract
Transient myeloproliferative disorder (TMD) is a spontaneously resolving condition affecting infants born with trisomy 21 syndrome. Although TMD is rather rare among infants with trisomy 21, its ramifications can become severe enough that neonatal nurses should be aware of the condition, its manifestations, and its management. The spectrum of TMD presentation ranges from subtle blastemia in an otherwise healthy infant to severe, life-threatening expression of the disease. TMD may be a precursor to congenital leukemia—thus, the importance of nurses’ becoming aware of this condition. This article addresses the pathology of TMD, case reports in the literature, potential complications of the disorder, and nursing implications. A case study of an infant with dermatologic manifestations of TMD is presented, including history, differential diagnoses, treatment, and follow-up.
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Affiliation(s)
- Branda Kruger
- University Medical Center, NICU, Lubbock, Texas 79415, USA.
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19
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Linabery AM, Olshan AF, Gamis AS, Smith FO, Heerema NA, Blair CK, Ross JA. Exposure to medical test irradiation and acute leukemia among children with Down syndrome: a report from the Children's Oncology Group. Pediatrics 2006; 118:e1499-508. [PMID: 17030598 DOI: 10.1542/peds.2006-0644] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE The etiology of acute childhood leukemia is not well understood, particularly among children with Down syndrome, in whom a 10- to 20-fold increased risk of leukemogenesis has been reported compared with children without Down syndrome. We explored the association between medical test irradiation, a postulated leukemogenic agent, and acute leukemia among children with Down syndrome. PATIENTS AND METHODS Children with Down syndrome (controls) were frequency matched on age to children with Down syndrome and leukemia (cases) diagnosed at ages 0 to 19 years during the period 1997-2002 at participating Children's Oncology Group institutions in North America. Telephone interviews were completed with mothers of 158 cases (n = 97 acute lymphoblastic leukemia and n = 61 acute myeloid leukemia) and 173 controls. Paternal interviews were completed with 275 fathers and 40 mothers serving as surrogates. Three irradiation exposure periods were examined: preconception, in utero, and postnatal. Multivariate unconditional logistic regression models were constructed to evaluate the associations of interest, resulting in odds ratios and 95% confidence intervals. RESULTS There was little evidence that maternal or paternal preconception irradiation exposure, intrauterine exposure, or postnatal exposure contributes to leukemogenesis in children with Down syndrome. Overall, no evidence for an effect of any periconceptional exposure was observed. Similar results were observed among acute lymphoblastic leukemia and acute myeloid leukemia cases analyzed separately. CONCLUSIONS This was the first study, to our knowledge, to examine such an association among this unique patient population. The results do not provide evidence of a positive association between ionizing radiation exposure and acute leukemia among children with Down syndrome. The absence of an association should be encouraging for concerned parents of children with Down syndrome who undergo a series of diagnostic radiographs in the course of their standard care.
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Affiliation(s)
- Amy M Linabery
- Division of Pediatric Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE, Minneapolis, MN 55455, USA
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20
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Diekamp S, Creutzig U, Reinhardt D, Baumann-Köhler M. Transitorisch myeloproliferatives Syndrom bei Neugeborenen mit Down-Syndrom. Monatsschr Kinderheilkd 2006. [DOI: 10.1007/s00112-004-1016-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Abstract
Transient megakaryoblastic leukaemia is found in 10% of newborns with Down syndrome, characterized by constitutional trisomy 21. Although in most cases the leukaemic cells disappear spontaneously after the first months of life, irreversible acute megakaryoblastic leukaemia develops in 20% of these individuals within 4 years. The leukaemic cells typically harbour somatic mutations of the gene encoding GATA1, an essential transcriptional regulator of normal megakaryocytic differentiation. Leukaemia that specifically arises in the context of constitutional trisomy 21 and somatic GATA1 mutations is a unique biological model of the incremental process of leukaemic transformation.
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Affiliation(s)
- Johann K Hitzler
- Department of Pediatrics, Division of Hematology/Oncology, The Hospital for Sick Children, University of Toronto, Ontario, Canada.
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22
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Flamholz RB, Veillon DM, Jeroudi M, Sakhalkar VS, Nordberg ML, Cotelingam JD. Myeloblastic Proliferation in the Peripheral Blood of a Neonate With Down Syndrome. Lab Med 2004. [DOI: 10.1309/tdjq1kw8yjn5w2qj] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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23
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McElwaine S, Mulligan C, Groet J, Spinelli M, Rinaldi A, Denyer G, Mensah A, Cavani S, Baldo C, Dagna-Bricarelli F, Hann I, Basso G, Cotter FE, Nizetic D. Microarray transcript profiling distinguishes the transient from the acute type of megakaryoblastic leukaemia (M7) in Down's syndrome, revealing PRAME
as a specific discriminating marker. Br J Haematol 2004; 125:729-42. [PMID: 15180862 DOI: 10.1111/j.1365-2141.2004.04982.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transient myeloproliferative disorder (TMD) is a unique, spontaneously regressing neoplasia specific to Down's syndrome (DS), affecting up to 10% of DS neonates. In 20-30% of cases, it reoccurs as progressive acute megakaryoblastic leukaemia (AMKL) at 2-4 years of age. The TMD and AMKL blasts are morphologically and immuno-phenotypically identical, and have the same acquired mutations in GATA1. We performed transcript profiling of nine TMD patients comparing them with seven AMKL patients using Affymetrix HG-U133A microarrays. Similar overall transcript profiles were observed between the two conditions, which were only separable by supervised clustering. Taqman analysis on 10 TMD and 10 AMKL RNA samples verified the expression of selected differing genes, with statistical significance (P < 0.05) by Student's t-test. The Taqman differences were also reproduced on TMD and AMKL blasts sorted by a fluorescence-activated cell sorter. Among the significant differences, CDKN2C, the effector of GATA1-mediated cell cycle arrest, was increased in AMKL but not TMD, despite the similar level of GATA1. In contrast, MYCN (neuroblastoma-derived oncogene) was expressed in TMD at a significantly greater level than in AMKL. MYCN has not previously been described in leukaemogenesis. Finally, the tumour antigen PRAME was identified as a specific marker for AMKL blasts, with no expression in TMD. This study provides markers discriminating TMD from AMKL-M7 in DS. These markers have the potential as predictive, diagnostic and therapeutic targets. In addition, the study provides further clues into the pathomechanisms discerning self-regressive from the progressive phenotype.
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Affiliation(s)
- Suzanne McElwaine
- Centre for Haematology, Institute of Cell and Molecular Science, Barts and The London, Queen Mary's School of Medicine, University of London, Medical College Building, Turner Street, London, UK
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24
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Greene ME, Mundschau G, Wechsler J, McDevitt M, Gamis A, Karp J, Gurbuxani S, Arceci R, Crispino JD. Mutations in GATA1 in both transient myeloproliferative disorder and acute megakaryoblastic leukemia of Down syndrome. Blood Cells Mol Dis 2003; 31:351-6. [PMID: 14636651 DOI: 10.1016/j.bcmd.2003.08.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Mutations in transcription factors often contribute to human leukemias by providing a block to normal differentiation. To determine whether mutations in the hematopoietic transcription factor GATA1 are associated with leukemia, we assayed for alterations in the GATA1 gene in bone marrow samples from patients with various subtypes of acute leukemia. Here we summarize our findings that GATA1 is mutated in the leukemic blasts of patients with Down syndrome acute megakaryoblastic leukemia (DS-AMKL). We did not find mutations in GATA1 in leukemic cells of DS patients with other types of acute leukemia, or in other patients with AMKL who did not have DS. Furthermore, we did not detect GATA1 mutations in DNAs from over 75 other patients with acute leukemia or from 21 healthy individuals. Since the GATA1 mutations were restricted to DS-AMKL, we also investigated whether GATA1 was altered in the "preleukemia" of DS, transient myeloproliferative disorder (TMD). TMD is a common myeloid disorder that affects 10% of DS newborns and evolves to AMKL in nearly 30% patients. We detected GATA1 mutations in TMD blasts from every infant examined. Together, these results demonstrate that GATA1 is likely to play a critical role in the etiology of TMD and DS-AMKL, and that mutagenesis of GATA1 represents a very early event in DS myeloid leukemogenesis. We hypothesize that disruption of normal GATA-1 function is an essential step in the initiation of megakaryoblastic leukemia in DS.
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Affiliation(s)
- Marianne E Greene
- Ben May Institute for Cancer Research, University of Chicago, Chicago, IL, USA
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25
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Gurbuxani S, Vyas P, Crispino JD. Recent insights into the mechanisms of myeloid leukemogenesis in Down syndrome. Blood 2003; 103:399-406. [PMID: 14512321 DOI: 10.1182/blood-2003-05-1556] [Citation(s) in RCA: 133] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
GATA-1 is the founding member of a transcription factor family that regulates growth and maturation of a diverse set of tissues. GATA-1 is expressed primarily in hematopoietic cells and is essential for proper development of erythroid cells, megakaryocytes, eosinophils, and mast cells. Although loss of GATA-1 leads to differentiation arrest and apoptosis of erythroid progenitors, absence of GATA-1 promotes accumulation of immature megakaryocytes. Recently, we and others have reported that mutagenesis of GATA1 is an early event in Down syndrome (DS) leukemogenesis. Acquired mutations in GATA1 were detected in the vast majority of patients with acute megakaryoblastic leukemia (DS-AMKL) and in nearly every patient with transient myeloproliferative disorder (TMD), a "preleukemia" that may be present in as many as 10% of infants with DS. Although the precise pathway by which mutagenesis of GATA1 contributes to leukemia is unknown, these findings confirm that GATA1 plays an important role in both normal and malignant hematopoiesis. Future studies to define the mechanism that results in the high frequency of GATA1 mutations in DS and the role of altered GATA1 in TMD and DS-AMKL will shed light on the multistep pathway in human leukemia and may lead to an increased understanding of why children with DS are markedly predisposed to leukemia.
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Affiliation(s)
- Sandeep Gurbuxani
- University of Chicago, 924 E 57th St, Rm R116, Chicago, IL 60637, USA
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26
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Bayliff S, Horvatinovich JM, Gong JZ, Rosoff PM. Lack of circulating megakaryoblasts in newborn peripheral blood: development and validation of a sensitive flow cytometric detection method. J Pediatr Hematol Oncol 2003; 25:721-5. [PMID: 12972808 DOI: 10.1097/00043426-200309000-00009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
It is currently thought that approximately 1% of children with Down syndrome will develop a "premalignant" syndrome known as transient myeloproliferative disorder (TMD). Prospective, population-based studies of the incidence of TMD in Down syndrome infants is lacking. Although most cases of TMD resolve by 1 year of age, data suggest that 10% to 20% of Down syndrome patients with TMD develop AML-M7 (megakaryoblastic leukemia). To identify the true incidence of TMD in the Down syndrome population, a sensitive, rapid, and cost-effective method of quantifying circulating megakaryoblasts in large numbers of patients was needed. In this pilot study, the authors tested the hypothesis that there are fewer than 1% megakaryoblasts of nucleated cells circulating in the blood of normosomic infants. Four-antigen flow cytometry was used to establish the percentage of megakaryoblasts present in each of 100 cord blood samples collected blindly from "normosomic" live births. There was a mean percentage of 0.017% megakaryoblasts in 100 cord blood samples from normosomic infants. Flow cytometry proved to be a sensitive, rapid, and reproducible method for the quantification of megakaryoblasts. Less than 1% of circulating nucleated cells in the blood of newborn infants are megakaryoblasts, providing a comparison population for the authors' larger proposed incidence study.
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Affiliation(s)
- Sherry Bayliff
- Department of Pediatrics, University of Kentucky School of Medicine, Lexington, KY 40536-0284, USA.
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27
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Abstract
Pediatric bone marrow evaluation is often challenging, especially for pathologists with more experience evaluating bone marrow specimens from adults. This article reviews the features of several pediatric hematologic malignancies that have been selected because they illustrate the different approach required to evaluate pediatric bone marrow specimens, and highlight potential diagnostic pitfalls. The following topics have been selected for discussion: ancillary studies required for prognostication in pediatric acute lymphoblastic leukemia, the classification of pediatric acute myeloid leukemia, congenital acute leukemia and its distinction from Down syndrome-associated transient myeloproliferative disorder, diagnosis and classification of pediatric myelodysplastic syndromes, and juvenile myelomonocytic leukemia as a distinct disease entity of childhood.
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Affiliation(s)
- Fiona E Craig
- Division of Hematopathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
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28
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Hitzler JK, Cheung J, Li Y, Scherer SW, Zipursky A. GATA1 mutations in transient leukemia and acute megakaryoblastic leukemia of Down syndrome. Blood 2003; 101:4301-4. [PMID: 12586620 DOI: 10.1182/blood-2003-01-0013] [Citation(s) in RCA: 195] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Children with constitutional trisomy 21 (Down syndrome) have an approximately 500-fold increased risk of developing acute megakaryoblastic leukemia (AMKL), a form of acute myeloid leukemia. Unique to newborn infants with Down syndrome is a transient leukemia (TL), also referred to as transient myeloproliferative syndrome, that undergoes spontaneous remission in the majority of cases but in approximately 20% is followed by AMKL later in life. Recently mutations of the gene encoding the hematopoietic transcription factor GATA1 were shown to be specific for AMKL of Down syndrome. Here, we demonstrate that GATA1 mutations are present in blasts of TL and show the identical GATA1 mutation in sequential samples collected from a patient during TL and subsequent AMKL. These findings suggest a model of malignant transformation in Down syndrome AMKL in which GATA1 mutations are an early event and AMKL arises from latent TL clones following initial apparent remission.
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Affiliation(s)
- Johann K Hitzler
- Department of Pediatrics, The Hospital for Sick Children, University of Toronto, ON, Canada.
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29
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Mundschau G, Gurbuxani S, Gamis AS, Greene ME, Arceci RJ, Crispino JD. Mutagenesis of GATA1 is an initiating event in Down syndrome leukemogenesis. Blood 2003; 101:4298-300. [PMID: 12560215 DOI: 10.1182/blood-2002-12-3904] [Citation(s) in RCA: 157] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
As many as 10% of infants with Down syndrome (DS) present with transient myeloproliferative disorder (TMD) at or shortly after birth. TMD is characterized by an abundance of blasts within the peripheral blood and liver, and notably undergoes spontaneous remission in the majority of cases. TMD may be a precursor to acute megakaryoblastic leukemia (AMKL), with an estimated 30% of TMD patients developing AMKL within 3 years. We recently reported that mutations in the transcription factor GATA1 are associated with DS-AMKL. To determine whether the acquisition of GATA1 mutations is a late event restricted to acute leukemia, we analyzed GATA1 in DNA from TMD patients. Here we report that GATA1 is mutated in the TMD blasts from every infant examined. These results demonstrate that GATA1 is likely to play a critical role in the etiology of TMD, and mutagenesis of GATA1 represents a very early event in DS myeloid leukemogenesis.
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Affiliation(s)
- Gina Mundschau
- Ben May Institute for Cancer Research, University of Chicago, Chicago, IL 60637, USA
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30
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Groet J, McElwaine S, Spinelli M, Rinaldi A, Burtscher I, Mulligan C, Mensah A, Cavani S, Dagna-Bricarelli F, Basso G, Cotter FE, Nizetic D. Acquired mutations in GATA1 in neonates with Down's syndrome with transient myeloid disorder. Lancet 2003; 361:1617-20. [PMID: 12747884 DOI: 10.1016/s0140-6736(03)13266-7] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Transient myeloid disorder is a unique self-regressing neoplasia specific to Down's syndrome. The transcription factor GATA1 is needed for normal growth and maturation of erythroid cells and megakaryocytes. Mutations in GATA1 have been reported in acute megakaryoblastic leukaemia in Down's syndrome. We aimed to investigate changes in GATA1 in patients with Down's syndrome and either transient myeloid disorder (n=10) or acute megakaryoblastic leukaemia (n=6). We recorded mutations eliminating exon 2 from GATA1 in all patients with transient myeloid disorder (age 0-24 days) and in all with acute megakaryoblastic leukaemia (age 14-38 months). The range of mutations did not differ between patients with each disorder. Patients with transient myeloid disorder with mutations in GATA1 can regress spontaneously to complete remission, and mutations do not necessarily predict later acute megakaryoblastic leukaemia.
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Affiliation(s)
- Jürgen Groet
- Department of Haematology, Saint Bartholomew's and The Royal London Hospital, Queen Mary's School of Medicine, University of London, Medical College Building, Turner Street, E1 2AD, London, UK
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