Analysis of the immunophenotype of children treated on the Medical Research Council United Kingdom Acute Lymphoblastic Leukaemia Trial XI (MRC UKALLXI). Medical Research Council Childhood Leukaemia Working Party.

2.50
Hdl Handle:
http://hdl.handle.net/10541/91999
Title:
Analysis of the immunophenotype of children treated on the Medical Research Council United Kingdom Acute Lymphoblastic Leukaemia Trial XI (MRC UKALLXI). Medical Research Council Childhood Leukaemia Working Party.
Authors:
Hann, I M; Richards, S M; Eden, Tim O B; Hill, F G
Abstract:
Despite many years of meticulous immunophenotyping of childhood acute lymphoblastic leukaemia (ALL) cases the prognostic significance of some subtypes remains unclear. The Medical Research Council UKALLXI trial (1990-1996) in which uniform treatment has been given to 2090 children with ALL below the age of 18 years and above the age of 1 year, has afforded the opportunity to review these issues. Children with ALL of mature B cell type were not entered into this trial. Immunophenotype analysis was performed in each individual trial centre, but results were centrally reviewed in all cases, and were both available and considered adequate in 1934 (93%) of the first 2090 patients entered. The main diagnostic categories were early pre-B or null reported in 60 cases (3.1%), common ALL in 1242 (64.2%), pre-B in 252 (13.0%), 'common' or pre-B in 172 (8.9%) and T cell in 207 (10.7%) cases. Children with T cell disease were significantly more likely to be over the age of 10 years, with central nervous system disease at diagnosis and to be CD34 negative. They also had a higher incidence of high white cell count and were more likely to be of the French-American-British (FAB) L2 morphological subtype. Patients with 'null' cell disease tended to be less than 2 years or greater than 10 years of age, and CD13 and CD33 positive. CD10 was associated with lower white cell count (WBC) at diagnosis, younger age and FAB L1 morphological subtype. The presence of cytoplasmic immunoglobulin in pre-B cells was not associated with any specific clinical or laboratory features. CD34 positivity was less common in T cell patients and was associated with low WBC. Disease-free survival (DFS) and 95% confidence intervals (CI) at 5 years from diagnosis was 52% (95% CI: 44-59%) for T cell disease, 58% (95% CI: 43-73%) for early pre-B (or null cell) disease and 65% (95% CI: 62-68%) for common or pre-B disease; there being no significant difference between common and pre-B disease with regard to disease outcome. Patients with T cell disease had a worse prognosis than any other immunophenotype group (P < 0.00005). However this worse outcome was no longer significant after allowing for the other principal prognostic factors of age, gender and white cell count at diagnosis except for the very small number with WBC <20 x 10(9)/l and T cell disease. Those with CD10-positive leukaemia did better than those who were CD10 negative (P < 0.00005), with DFS at 5 years 64% (95% CI: 62-67%) for positive vs 56% (95% CI: 49-62%) for CD10 negative. CD10 positivity did not have independent significance when white count, gender and age were taken into account. CD13, CD33, and cytoplasmic mu positivity carried no prognostic significance.
Affiliation:
Department of Haematology and Oncology, Great Ormond Street Hospital for Children NHS Trust, London, UK.
Citation:
Analysis of the immunophenotype of children treated on the Medical Research Council United Kingdom Acute Lymphoblastic Leukaemia Trial XI (MRC UKALLXI). Medical Research Council Childhood Leukaemia Working Party. 1998, 12 (8):1249-55 Leukemia
Journal:
Leukemia
Issue Date:
Aug-1998
URI:
http://hdl.handle.net/10541/91999
PubMed ID:
9697880
Type:
Article
Language:
en
ISSN:
0887-6924
Appears in Collections:
All Christie Publications

Full metadata record

DC FieldValue Language
dc.contributor.authorHann, I Men
dc.contributor.authorRichards, S Men
dc.contributor.authorEden, Tim O Ben
dc.contributor.authorHill, F Gen
dc.date.accessioned2010-02-12T12:46:24Z-
dc.date.available2010-02-12T12:46:24Z-
dc.date.issued1998-08-
dc.identifier.citationAnalysis of the immunophenotype of children treated on the Medical Research Council United Kingdom Acute Lymphoblastic Leukaemia Trial XI (MRC UKALLXI). Medical Research Council Childhood Leukaemia Working Party. 1998, 12 (8):1249-55 Leukemiaen
dc.identifier.issn0887-6924-
dc.identifier.pmid9697880-
dc.identifier.urihttp://hdl.handle.net/10541/91999-
dc.description.abstractDespite many years of meticulous immunophenotyping of childhood acute lymphoblastic leukaemia (ALL) cases the prognostic significance of some subtypes remains unclear. The Medical Research Council UKALLXI trial (1990-1996) in which uniform treatment has been given to 2090 children with ALL below the age of 18 years and above the age of 1 year, has afforded the opportunity to review these issues. Children with ALL of mature B cell type were not entered into this trial. Immunophenotype analysis was performed in each individual trial centre, but results were centrally reviewed in all cases, and were both available and considered adequate in 1934 (93%) of the first 2090 patients entered. The main diagnostic categories were early pre-B or null reported in 60 cases (3.1%), common ALL in 1242 (64.2%), pre-B in 252 (13.0%), 'common' or pre-B in 172 (8.9%) and T cell in 207 (10.7%) cases. Children with T cell disease were significantly more likely to be over the age of 10 years, with central nervous system disease at diagnosis and to be CD34 negative. They also had a higher incidence of high white cell count and were more likely to be of the French-American-British (FAB) L2 morphological subtype. Patients with 'null' cell disease tended to be less than 2 years or greater than 10 years of age, and CD13 and CD33 positive. CD10 was associated with lower white cell count (WBC) at diagnosis, younger age and FAB L1 morphological subtype. The presence of cytoplasmic immunoglobulin in pre-B cells was not associated with any specific clinical or laboratory features. CD34 positivity was less common in T cell patients and was associated with low WBC. Disease-free survival (DFS) and 95% confidence intervals (CI) at 5 years from diagnosis was 52% (95% CI: 44-59%) for T cell disease, 58% (95% CI: 43-73%) for early pre-B (or null cell) disease and 65% (95% CI: 62-68%) for common or pre-B disease; there being no significant difference between common and pre-B disease with regard to disease outcome. Patients with T cell disease had a worse prognosis than any other immunophenotype group (P < 0.00005). However this worse outcome was no longer significant after allowing for the other principal prognostic factors of age, gender and white cell count at diagnosis except for the very small number with WBC <20 x 10(9)/l and T cell disease. Those with CD10-positive leukaemia did better than those who were CD10 negative (P < 0.00005), with DFS at 5 years 64% (95% CI: 62-67%) for positive vs 56% (95% CI: 49-62%) for CD10 negative. CD10 positivity did not have independent significance when white count, gender and age were taken into account. CD13, CD33, and cytoplasmic mu positivity carried no prognostic significance.en
dc.language.isoenen
dc.subjectBiological Tumour Markersen
dc.subjectPrecursor Cell Lymphoblastic Leukaemia-Lymphomaen
dc.subject.meshAdolescent-
dc.subject.meshAntigens, CD-
dc.subject.meshAntigens, CD13-
dc.subject.meshAntigens, Differentiation, Myelomonocytic-
dc.subject.meshAntineoplastic Combined Chemotherapy Protocols-
dc.subject.meshAsparaginase-
dc.subject.meshChild-
dc.subject.meshChild, Preschool-
dc.subject.meshDaunorubicin-
dc.subject.meshDisease-Free Survival-
dc.subject.meshFemale-
dc.subject.meshHumans-
dc.subject.meshImmunophenotyping-
dc.subject.meshInfant-
dc.subject.meshLeukocyte Count-
dc.subject.meshMale-
dc.subject.meshMethotrexate-
dc.subject.meshNeprilysin-
dc.subject.meshPrecursor Cell Lymphoblastic Leukemia-Lymphoma-
dc.subject.meshPrednisolone-
dc.subject.meshPrognosis-
dc.subject.meshTumor Markers, Biological-
dc.subject.meshVincristine-
dc.titleAnalysis of the immunophenotype of children treated on the Medical Research Council United Kingdom Acute Lymphoblastic Leukaemia Trial XI (MRC UKALLXI). Medical Research Council Childhood Leukaemia Working Party.en
dc.typeArticleen
dc.contributor.departmentDepartment of Haematology and Oncology, Great Ormond Street Hospital for Children NHS Trust, London, UK.en
dc.identifier.journalLeukemiaen

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