PMID- 20561032 OWN - NLM STAT- MEDLINE DCOM- 20101004 LR - 20131121 IS - 1600-0609 (Electronic) IS - 0902-4441 (Linking) VI - 85 IP - 4 DP - 2010 Oct TI - Childhood near-tetraploid acute lymphoblastic leukemia: an EGIL study on 36 cases. PG - 300-8 LID - 10.1111/j.1600-0609.2010.01493.x [doi] AB - OBJECTIVES: Patients with near-tetraploid (karyotype: 81 - 103 chromosomes) acute lymphoblastic leukemia (NT-ALL) constitute about 1% of childhood ALL and data reported on them are limited and controversial. The aim of the study was to enlarge the knowledge on these rarely occurring ALL. METHODS: The members of the European Group for Immunophenotyping of Leukemias (EGIL) searched retrospectively their databases for NT-ALL patients. RESULTS: We collected data of 36 European children from seven European countries with NT-ALL diagnosed since 1992. All patients reached complete remission (CR) after induction chemotherapy. Their blasts were negative for peroxidase and BCR-ABL1. Ten children were diagnosed as T-cell ALL (T-ALL) EGIL categories (T-I n=2, T-II n=2, T-III n=3, T-IV n=3) and four displayed various structural chromosomal abnormalities. Eight of 10 T-ALL remained in 1st CR; one died in CR from sepsis and one is alive in 2nd CR. Median survival was 88 (7-213) months. B-cell precursor (BCP) ALL was diagnosed in 26 children. Thirteen were positive for ETV6-RUNX1 and are alive in 1st CR for 32-147 months. Ten children were ETV6-RUNX1 negative and remained in 1st CR for 16-163 months. One girl with hypodiploid and NT metaphases and ETV6-RUNX1-negative BCP-ALL and one of two boys with NT-BCP-ALL not examined for ETV6-RUNX1 died of infection after stem cell transplantation in 2nd/3rd CR. Secondary myelodysplastic syndrome developed in two patients with NT-BCP-ALL. CONCLUSIONS: Our data demonstrate immunophenotypic, cytogenetic, and molecular heterogeneity of NT-ALL and favorable prognosis of most NT-ALL across different immunophenotypic and/or genetic ALL subtypes. CI - (c) 2010 John Wiley & Sons A/S. FAU - Lemez, Petr AU - Lemez P AD - Department of Hematology and Blood Transfusion, Hospital Jihlava, Jihlava, Czech Republic. plemez@post.cz FAU - Attarbaschi, Andishe AU - Attarbaschi A FAU - Bene, Marie C AU - Bene MC FAU - Bertrand, Yves AU - Bertrand Y FAU - Castoldi, Gianluigi AU - Castoldi G FAU - Forestier, Erik AU - Forestier E FAU - Garand, Richard AU - Garand R FAU - Haas, Oskar A AU - Haas OA FAU - Kagialis-Girard, Sandrine AU - Kagialis-Girard S FAU - Ludwig, Wolf-Dieter AU - Ludwig WD FAU - Matutes, Estella AU - Matutes E FAU - Mejstrikova, Ester AU - Mejstrikova E FAU - Pages, Marie-Pierre AU - Pages MP FAU - Pickl, Winfried AU - Pickl W FAU - Porwit, Anna AU - Porwit A FAU - Orfao, Alberto AU - Orfao A FAU - Schabath, Richard AU - Schabath R FAU - Stary, Jan AU - Stary J FAU - Strobl, Herbert AU - Strobl H FAU - Talmant, Pascaline AU - Talmant P FAU - van't Veer, Mars B AU - van't Veer MB FAU - Zemanova, Zuzana AU - Zemanova Z CN - European Group for the Immunological Characterization of Leukemias (EGIL) LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Haematol JT - European journal of haematology JID - 8703985 RN - 0 (Core Binding Factor Alpha 2 Subunit) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (TEL-AML1 fusion protein) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) SB - IM MH - Antineoplastic Combined Chemotherapy Protocols/therapeutic use MH - Child MH - Chromosome Aberrations MH - Core Binding Factor Alpha 2 Subunit MH - Europe MH - Female MH - Fusion Proteins, bcr-abl/genetics MH - Humans MH - Immunophenotyping MH - Karyotyping MH - Male MH - Oncogene Proteins, Fusion/genetics MH - *Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy/epidemiology/genetics/immunology/mortality MH - Prognosis MH - Remission Induction MH - Retrospective Studies MH - Survival Analysis MH - Treatment Outcome EDAT- 2010/06/22 06:00 MHDA- 2010/10/05 06:00 CRDT- 2010/06/22 06:00 PHST- 2010/06/22 06:00 [entrez] PHST- 2010/06/22 06:00 [pubmed] PHST- 2010/10/05 06:00 [medline] AID - EJH1493 [pii] AID - 10.1111/j.1600-0609.2010.01493.x [doi] PST - ppublish SO - Eur J Haematol. 2010 Oct;85(4):300-8. doi: 10.1111/j.1600-0609.2010.01493.x.