Adjuvant tyrosine kinase inhibitor therapy improves outcome for children and adolescents with acute lymphoblastic leukaemia who have an ABL‐class fusion

Anthony V. Moorman, Claire Schwab, Emily Winterman, Jerry Hancock, Anna Castleton, Michelle Cummins, Brenda Gibson, Nick Goulden, Pam Kearns, Beki James, Amy A. Kirkwood, Donna Lancaster, Mabrouk Madi, Andrew McMillan, Jayashree Motwani, Alice Norton, Aengus O’Marcaigh, Katharine Patrick, Neha Bhatnagar, Amrana QureshiDeborah Richardson, Simone Stokley, Gordon Taylor, Frederik W. Delft, John Moppett, Christine J. Harrison, Sujith Samarasinghe, Ajay Vora

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Patients with an ABL-class fusion have a high risk of relapse on standard chemotherapy but are sensitive to tyrosine kinase inhibitors (TKI). In UKALL2011, we screened patients with post-induction MRD ≥1% and positive patients (12%) received adjuvant TKI. As the intervention started during UKALL2011, not all eligible patients were screened prospectively. Retrospective screening of eligible patients allowed the outcome of equivalent ABL-class patients who did and did not receive a TKI in first remission to be compared. ABL-class patients who received a TKI in first remission had a reduced risk of relapse/refractory disease: 0% vs. 63% at four years (P = 0·009).

Original languageEnglish
Pages (from-to)844-851
Number of pages8
JournalBritish Journal of Haematology
Volume191
Issue number5
Early online date14 Sept 2020
DOIs
Publication statusPublished - 14 Dec 2020

Bibliographical note

Funding Information:
We would like thank all the patients who took part in this study as well as their families. We acknowledge Blood Cancer UK (formerly Bloodwise) for financial support and the member laboratories of the UK Cancer Cytogenetic Group (UKCCG) for providing cytogenetic data and material; in particular Gavin Cuthbert at the Northern Genetics Service (Newcastle upon Tyne Hospitals NHS Trust) for additional genomic analyses. We acknowledge the input of all the scientists and technicians working in the MRD laboratories: Bristol Genetics Laboratory, Southmead Hospital, Bristol; Molecular Biology Laboratory, Royal Hospital for Sick Children, Glasgow; Molecular Haematology Laboratory, Royal London Hospital, London; and the Molecular Genetics Service, Sheffield Children?s Hospital, Sheffield. Primary childhood leukaemia samples used in this study were provided by the Blood Cancer UK Childhood Leukaemia Cell Bank working with the aforementioned MRD laboratories.

Publisher Copyright:
© 2020 The Authors. British Journal of Haematology published by British Society for Haematology and John Wiley & Sons Ltd.

Keywords

  • ABL-class fusion
  • paediatric acute lymphoblastic leukaemia
  • prognostic factors
  • targeted therapy
  • tyrosine kinase inhibitor

ASJC Scopus subject areas

  • Hematology

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