The UK experience in treating relapsed childhood acute lymphoblastic leukaemia: a report on the medical research council UKALLR1 study.
AffiliationDepartment of Haematology, Birmingham Children's Hospital, Birmingham, UK. email@example.com
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AbstractWe have examined the toxicity and overall outcome of the Medical Research Council UKALL R1 protocol for 256 patients with relapsed childhood acute lymphoblastic leukaemia (ALL). Second remission was achieved in over 95% of patients. Two patients died during induction and seven patients died of resistant disease. The overall actuarial event-free survival (EFS) at 5 years for all patients experiencing a first relapse was 46% (95% CI 40-52). Duration of first remission, site of relapse, age at diagnosis and sex emerged as factors of prognostic significance. Five-year EFS was only 7% for children relapsing in the bone marrow within 2 years of diagnosis, but was 77% for those relapsing without bone marrow involvement > 2.5 years from diagnosis. All analyses in this report are by treatment received. For those receiving chemotherapy alone, the 5-year EFS was 48%; for autologous bone marrow transplantation (BMT), the 5-year EFS was 47%; for unrelated donor BMT, it was 52%; and for related donor BMT, the 5-year EFS was 45%. The groups, however, were not comparable with respect to risk factor profile, and therefore direct comparison of EFS is misleading. Adjustment for time to transplant and prognostic factors was used to reduce the effects of biases between treatment groups, but did not suggest benefit for any particular treatment. There was failure of our planned randomization scheme in this trial with only 9% of those eligible being randomized, which highlights the difficulties in running randomized trials especially in patients who have relapsed from a previous trial. The optimal treatment for relapsed ALL therefore remains uncertain. Alternative approaches are clearly needed for those with early bone marrow relapse if outcome is to improve.
CitationThe UK experience in treating relapsed childhood acute lymphoblastic leukaemia: a report on the medical research council UKALLR1 study. 2000, 108 (3):531-43 Br. J. Haematol.
JournalBritish Journal of Haematology
- Comparison of bone marrow transplant and chemotherapy for relapsed childhood acute lymphoblastic leukaemia: the MRC UKALL X experience. Medical Research Council Working Party on Childhood Leukaemia.
- Authors: Wheeler K, Richards S, Bailey C, Chessells J
- Issue date: 1998 Apr
- Treatment reduction for children and young adults with low-risk acute lymphoblastic leukaemia defined by minimal residual disease (UKALL 2003): a randomised controlled trial.
- Authors: Vora A, Goulden N, Wade R, Mitchell C, Hancock J, Hough R, Rowntree C, Richards S
- Issue date: 2013 Mar
- Benefit of intensified treatment for all children with acute lymphoblastic leukaemia: results from MRC UKALL XI and MRC ALL97 randomised trials. UK Medical Research Council's Working Party on Childhood Leukaemia.
- Authors: Hann I, Vora A, Richards S, Hill F, Gibson B, Lilleyman J, Kinsey S, Mitchell C, Eden OB
- Issue date: 2000 Mar
- Novel multiagent chemotherapy for bone marrow relapse of pediatric acute lymphoblastic leukemia.
- Authors: Leahey AM, Bunin NJ, Belasco JB, Meek R, Scher C, Lange BJ
- Issue date: 2000 May
- Determinants of outcome after intensified therapy of childhood lymphoblastic leukaemia: results from Medical Research Council United Kingdom acute lymphoblastic leukaemia XI protocol.
- Authors: Hann I, Vora A, Harrison G, Harrison C, Eden O, Hill F, Gibson B, Richards S, UK Medical Research Council's Working Party on Childhood Leukaemia.
- Issue date: 2001 Apr