PMID- 11001892 OWN - NLM STAT- MEDLINE DCOM- 20001025 LR - 20210216 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 96 IP - 7 DP - 2000 Oct 1 TI - Bone marrow transplantation versus chemotherapy in the treatment of very high-risk childhood acute lymphoblastic leukemia in first remission: results from Medical Research Council UKALL X and XI. PG - 2412-8 AB - The role of bone marrow transplantation (BMT) in first remission of children with high-risk acute lymphoblastic leukemia (ALL) remains unclear. There were 3676 patients (aged 1 to 15 years) entered into the United Kingdom (UK) Medical Research Council (MRC) trials UKALL X and XI from 1985 to 1997. Of these patients, 473 patients (13%) were classified as very high (VH) risk and were eligible for a transplantation from a matched histocompatible sibling donor (MSD). We tissue-typed 286 patients; 99 patients had a matched related donor, and 76 patients received transplantations. Additionally, 25 children received transplantations from a matched unrelated donor (MUD) despite trial guidelines for MSD transplantations only. The median time to transplantation was 5 months (range, 2 to 19 months), and the median follow-up was 8 years. The 10-year event-free survival (EFS) adjusted for the time to transplantation, diagnostic white blood cell (WBC) count, Ph chromosome status, and ploidy was 6. 0% higher (95% confidence interval (CI), -10.5% to 22.5%) for 101 patients who received a first-remission transplantation (MSD and MUD) than for the 351 patients treated with chemotherapy (transplantation, 45.3%, vs chemotherapy, 39.3%). The transplantation group had fewer relapses (31%) compared to relapses in the chemotherapy group (55%); however, the transplantation group had more remission deaths (18%) compared to remission deaths in the chemotherapy group (3%). In contrast the adjusted 10-year EFS was 10. 7% higher (95% CI, -2.6% to 24.0%) for patients without a human leukocyte antigen (HLA)-matched donor than for those patients with a donor (no donor, 50.4%, vs donor, 39.7%). In conclusion, for the majority of children with VH-risk ALL, the first-remission transplantation has not improved EFS. FAU - Wheeler, K A AU - Wheeler KA AD - John Radcliffe Hospital, Headington, Oxford, England. kate.wheeler@paediatrics.oxford.ac.uk FAU - Richards, S M AU - Richards SM FAU - Bailey, C C AU - Bailey CC FAU - Gibson, B AU - Gibson B FAU - Hann, I M AU - Hann IM FAU - Hill, F G AU - Hill FG FAU - Chessells, J M AU - Chessells JM LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Blood JT - Blood JID - 7603509 SB - IM MH - Adolescent MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - *Bone Marrow Transplantation MH - Child MH - Child, Preschool MH - Disease-Free Survival MH - Histocompatibility Testing MH - Humans MH - Infant MH - Leukocyte Count MH - Philadelphia Chromosome MH - Ploidies MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*drug therapy/mortality/*surgery MH - Recurrence MH - Remission Induction MH - Risk Factors MH - United Kingdom EDAT- 2000/09/26 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/09/26 11:00 PHST- 2000/09/26 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/09/26 11:00 [entrez] AID - S0006-4971(20)54349-8 [pii] PST - ppublish SO - Blood. 2000 Oct 1;96(7):2412-8.