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Gene expression classifiers for relapse-free survival and minimal residual disease improve risk classification and outcome prediction in pediatric B-precursor.

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Presentation on theme: "Gene expression classifiers for relapse-free survival and minimal residual disease improve risk classification and outcome prediction in pediatric B-precursor."— Presentation transcript:

1 Gene expression classifiers for relapse-free survival and minimal residual disease improve risk classification and outcome prediction in pediatric B-precursor acute lymphoblastic leukemia by Huining Kang, I.-Ming Chen, Carla S. Wilson, Edward J. Bedrick, Richard C. Harvey, Susan R. Atlas, Meenakshi Devidas, Charles G. Mullighan, Xuefei Wang, Maurice Murphy, Kerem Ar, Walker Wharton, Michael J. Borowitz, W. Paul Bowman, Deepa Bhojwani, William L. Carroll, Bruce M. Camitta, Gregory H. Reaman, Malcolm A. Smith, James R. Downing, Stephen P. Hunger, and Cheryl L. Willman Blood Volume 115(7):1394-1405 February 18, 2010 ©2010 by American Society of Hematology

2 Performance of the 42-probe-set (38-gene) gene expression classifier for prediction of RFS. (A- B) Kaplan-Meier survival estimates of RFS in the full cohort of 207 patients (A) and in the low- versus high-risk groups distinguished with the gene expression cl... Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology

3 Kaplan-Meier estimates of RFS based on the gene expression classifier for RFS and end- induction (day 29) MRD. (A) Day 29 flow cytometric measures of MRD separated patients into 2 groups with significantly different RFS. (B-C) After dividing patients by thei... Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology

4 Kaplan-Meier estimates of RFS based on the gene expression classifier for RFS modeled on high-risk ALL cases lacking known recurring cytogenetic abnormalities and end-induction (day 29) MRD. (A) The second gene expression classifier modeled only on those hi... Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology

5 Gene expression classifier for prediction of end-induction (day 29) flow MRD in pretreatment samples combined with the gene expression classifier for RFS. (A) A ROC shows the high accuracy of the 23-probe-set MRD classifier (LOOCV error rate of 24.61%; sens... Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology

6 Kaplan-Meier estimates of RFS using the combined gene expression classifiers for RFS and MRD in an independent cohort of 84 children with high-risk ALL. (A) The gene expression classifier for RFS separates children into low- and high-risk groups in an indep... Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology

7 Kaplan-Meier estimates of RFS using the combined gene expression classifier for RFS and flow cytometric measures of MRD in the presence of kinase signatures, JAK mutations, and IKAROS/IKZF1 deletions. Huining Kang et al. Blood 2010;115:1394-1405 ©2010 by American Society of Hematology


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