PMID- 31463716 OWN - NLM STAT- MEDLINE DCOM- 20191108 LR - 20191108 IS - 1432-1335 (Electronic) IS - 0171-5216 (Linking) VI - 145 IP - 11 DP - 2019 Nov TI - Heterogeneity of childhood acute leukemia with mature B-cell immunophenotype. PG - 2803-2811 LID - 10.1007/s00432-019-03010-1 [doi] AB - BACKGROUND: Flow cytometry (FCM) plays a crucial role in the differential diagnosis of Burkitt lymphoma/leukemia (BL) and B-cell precursor acute lymphoblastic leukemia (BCP-ALL). The presence of surface IgM (sIgM) alone or with light chain restriction indicates a mature blast phenotype (BIV by EGIL) and is usually observed in BL. However, sIgM expression could also be detected in transitional BCP-ALL cases. These similarities in immunophenotype and ambiguous correspondence with other laboratory findings may challenge the correct BL diagnostics. METHODS: We retrospectively reviewed the available data from immunophenotypic, morphological, cytogenetic, and molecular genetic studies of 146 children (85 boys and 61 girls) with a median age of 10 years (range 0-18 years) who were diagnosed with BL and BCP-ALL. The blasts' immunophenotype was studied by multicolor FCM. The conventional cytogenetic analysis included G-banded karyotyping and fluorescence in situ hybridization (FISH). RESULTS: In 54 children classified as BIV-ALL according to the EGIL, it was demonstrated that sIgM in a minority of cases can be associated with various types of BCP-ALL. Analysis of the antigen expression profile of 105 patients with verified BL (n = 21) and BCP-ALL (n = 84) showed significant differences in BL and the sIgM(+) vs BCP-ALL immunophenotype. Thus, even in cases of ambiguous sIgM expression, these two diseases could be reliably discriminated by complex immunophenotyping. Moreover, 10 patients (7 boys and 3 girls) with BL leukemic cells did not express sIgM, and they were diagnosed with BL on the basis of other laboratory and clinical signs. CONCLUSIONS: In conclusion, our study shows that BIV subtype is heterogeneous group of leukemia including not only the BL, but also BCP-ALL. In ambiguous cases, only a combination of multiple immunophenotypic, cytomorphologic, and genetic diagnostic technologies can allow the precise discrimination of BL and BCP-ALL and selection of the appropriate treatment scheme. FAU - Demina, Irina AU - Demina I AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Zerkalenkova, Elena AU - Zerkalenkova E AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Illarionova, Olga AU - Illarionova O AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Olshanskaya, Yulia AU - Olshanskaya Y AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Verzhbitskaya, Tatiana AU - Verzhbitskaya T AD - Sverdlovsk Regional Clinical Children's Hospital No 1, 32 Serafimy Deryabinoy St., Ekaterinburg, 620149, Russia. AD - Research Institute of Medical Cell Technologies, 22a Karla Marksa St., Ekaterinburg, 620026, Russia. FAU - Semchenkova, Alexandra AU - Semchenkova A AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Tsaur, Grigory AU - Tsaur G AD - Sverdlovsk Regional Clinical Children's Hospital No 1, 32 Serafimy Deryabinoy St., Ekaterinburg, 620149, Russia. AD - Research Institute of Medical Cell Technologies, 22a Karla Marksa St., Ekaterinburg, 620026, Russia. AD - Federal State Autonomous Educational Institution of Higher Education Ural Federal University named after the first President of Russia B.N.Yeltsin, 19 Mira Street, Ekaterinburg, 620002, Russia. FAU - Rusanova, Ekaterina AU - Rusanova E AD - I.P. Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo St., Saint Petersburg, 197022, Russia. FAU - Belogurova, Margarita AU - Belogurova M AD - St. Petersburg Clinical Scientific and Practical Center of Specialized Medical Assistance (Oncological), 68a Leningradskaya St., Pesochnyi, Saint Petersburg, 197758, Russia. FAU - Baidun, Ludmila AU - Baidun L AD - Russian Children Clinical Hospital, Ministry of Health of Russia, 117 Leninskiy Prospect, Moscow, 119571, Russia. FAU - Plyasunova, Svetlana AU - Plyasunova S AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Konyuhova, Tatiana AU - Konyuhova T AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Kazakova, Anna AU - Kazakova A AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Fechina, Larisa AU - Fechina L AD - Sverdlovsk Regional Clinical Children's Hospital No 1, 32 Serafimy Deryabinoy St., Ekaterinburg, 620149, Russia. AD - Research Institute of Medical Cell Technologies, 22a Karla Marksa St., Ekaterinburg, 620026, Russia. FAU - Novichkova, Galina AU - Novichkova G AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Samochatova, Elena AU - Samochatova E AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Myakova, Natalia AU - Myakova N AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Maschan, Alexey AU - Maschan A AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. FAU - Popov, Alexander M AU - Popov AM AUID- ORCID: 0000-0002-0889-6986 AD - Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 1 Samory Mashela St., GSP-7, Moscow, 117997, Russia. uralcytometry@gmail.com. LA - eng PT - Journal Article DEP - 20190828 PL - Germany TA - J Cancer Res Clin Oncol JT - Journal of cancer research and clinical oncology JID - 7902060 SB - IM MH - Adolescent MH - B-Lymphocytes/*pathology MH - Child MH - Child, Preschool MH - Female MH - Flow Cytometry/*methods MH - Follow-Up Studies MH - Humans MH - Immunophenotyping/*methods MH - Infant MH - Infant, Newborn MH - Karyotyping/*methods MH - Male MH - Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/*classification/*pathology MH - Prognosis MH - Retrospective Studies OTO - NOTNLM OT - BCP-ALL OT - Burkitt lymphoma OT - Differential diagnostics OT - Flow cytometry EDAT- 2019/08/30 06:00 MHDA- 2019/11/09 06:00 CRDT- 2019/08/30 06:00 PHST- 2019/07/03 00:00 [received] PHST- 2019/08/19 00:00 [accepted] PHST- 2019/08/30 06:00 [pubmed] PHST- 2019/11/09 06:00 [medline] PHST- 2019/08/30 06:00 [entrez] AID - 10.1007/s00432-019-03010-1 [pii] AID - 10.1007/s00432-019-03010-1 [doi] PST - ppublish SO - J Cancer Res Clin Oncol. 2019 Nov;145(11):2803-2811. doi: 10.1007/s00432-019-03010-1. Epub 2019 Aug 28.