{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T19:31:43Z","timestamp":1783625503850,"version":"3.55.0"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,9,23]],"date-time":"2020-09-23T00:00:00Z","timestamp":1600819200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Br J Haematol"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The diagnosis of juvenile myelomonocytic leukaemia (JMML) is based on clinical, laboratory and molecular features but immunophenotyping [multiparametric flow cytometry (MFC)] has not been used routinely. In the present study, we describe the flow cytometric features at diagnosis with special attention to the distribution of monocytic subsets and the relation between MFC and molecular subgroups. MFC was performed with an eight\u2010colour platform based on Euroflow. We studied 33 JMML cases. CD34<jats:sup>+<\/jats:sup>\/CD117<jats:sup>+<\/jats:sup>\/CD13<jats:sup>+<\/jats:sup> cells &gt;2% was found in 25 cases, and 51\u00b75% presented an aberrant expression of CD7. A decrease of CD34<jats:sup>+<\/jats:sup>\/CD19<jats:sup>+<\/jats:sup>\/CD10<jats:sup>+<\/jats:sup> cells was seen in eight cases and in four they were absent. The granulocytic population had a decreased side scatter in 29 cases. Bone marrow monocytic precursors were increased in 28 patients, with a decrease in classical monocytes (median 80\u00b77%) and increase in CD16<jats:sup>+<\/jats:sup> (intermediate and non\u2010classical). A more pronounced increase in myeloid CD34<jats:sup>+<\/jats:sup> cells was seen in patients with Neurofibromatosis type 1 (<jats:italic>NF1<\/jats:italic>) and tyrosine\u2010protein phosphatase non\u2010receptor type 11 (<jats:italic>PTPN11<\/jats:italic>), with aberrant CD7 expression in four of six and 10\/12 patients respectively. Thus, JMML shows an immunophenotypic profile similar to myelodysplastic syndromes, and a different monocyte subset distribution when compared with chronic MML. MFC proved to be an important diagnostic tool that can help in differential diagnosis with other clonal diseases with monocytosis.<\/jats:p>","DOI":"10.1111\/bjh.17098","type":"journal-article","created":{"date-parts":[[2020,9,23]],"date-time":"2020-09-23T19:41:05Z","timestamp":1600890065000},"page":"129-136","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Immunophenotypic characteristics of juvenile myelomonocytic leukaemia and their relation with the molecular subgroups of the disease"],"prefix":"10.1111","volume":"192","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2681-9359","authenticated-orcid":false,"given":"Anita","family":"Frisanco Oliveira","sequence":"first","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"Brazilian Co\u2010operative Study Group for Paediatric Myelodysplastic Syndrome (GCB\u2010SMD\u2010PED) \u2013 Morphology and Flow Cytometry Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0019-0209","authenticated-orcid":false,"given":"Aline","family":"Tansini","sequence":"additional","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"GCB\u2010SMD\u2010PED \u2013 Flow cytometry Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1626-8944","authenticated-orcid":false,"given":"Thais Regina","family":"Toledo","sequence":"additional","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"GCB\u2010SMD\u2010PED \u2013 Flow cytometry Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael","family":"Balceiro","sequence":"additional","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"Brazilian Co\u2010operative Study Group for Paediatric Myelodysplastic Syndrome (GCB\u2010SMD\u2010PED) \u2013 Morphology and Flow Cytometry Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2117-3640","authenticated-orcid":false,"given":"Daniel","family":"Onofre Vidal","sequence":"additional","affiliation":[{"name":"GCB\u2010SMD\u2010PED \u2013 Molecular Biology and Genetic Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Lucia","family":"de Martino Lee","sequence":"additional","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"GCB\u2010SMD\u2010PED \u2013 Morphology and Myeloproliferative Diseases Committee Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6516-1265","authenticated-orcid":false,"given":"Irene","family":"Lorand\u2010Metze","sequence":"additional","affiliation":[{"name":"Brazilian Co\u2010operative Study Group for Paediatric Myelodysplastic Syndrome (GCB\u2010SMD\u2010PED) \u2013 Morphology and Flow Cytometry Committee Barretos S\u00e3o Paulo Brazil"},{"name":"GCB\u2010SMD\u2010PED \u2013 Chairman Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9737-9245","authenticated-orcid":false,"given":"Luiz Fernando","family":"Lopes","sequence":"additional","affiliation":[{"name":"Barretos Children\u2019s Cancer Hospital Barretos S\u00e3o Paulo Brazil"},{"name":"GCB\u2010SMD\u2010PED \u2013 Chairman Barretos S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,9,23]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"3534","article-title":"Chronic myelomonocytic leukemia in childhood: a retrospective analysis of 110 cases. 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