The kinetics of blast clearance are associated with copy number alterations in childhood B-cell acute lymphoblastic leukemia.

"Declaration of Competing Interest The authors declare no conflicts of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results."

"Funding A.P. and Z.U. were supported by the Polpharma Scientific Foundation, grant No. 9/XV/16. W.M., A.P., Z.U. and K.O. were supported by the Team-Net program (POIR.04.04.00-00-16ED/18-00) of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund. L.S., W.M. and T.S. were supported by STRATEGMED3/304586/5/NCBR/2017 Person ALL grant of the Polish National Center for Research and Development and internal Medical University of Silesia Grants."