{"denoms":[{"counts":[{"groupId":"OG000","value":"0"}],"units":"Participants"}],"description":"A hierarchical clustering algorithm is used to assemble the genes into a dendrogram or tree structure with branches containing genes with similar patterns of expression. This ordered representation can be graphically displayed with colors that reflect the qualitative and quantitative relationships of the expressed genes.","groups":[{"description":"INDUCTION THERAPY COURSE I: Patients receive cytarabine IT on day 1 and cytarabine IV continuously over 96 hours, daunorubicin hydrochloride IV continuously, and oral thioguanine BID on days 1-4.\n\nCOURSE II: Patients receive high-dose cytarabine IV over 3 hours BID on days 1, 2, 8, and 9 and asparaginase (IM) on days 2 and 9.\n\nCOURSE III: Patients receive treatment as in course I. COURSE IV: Patients receive cytarabine IV, daunorubicin hydrochloride IV, and oral thioguanine as in course I INTENSIFICATION THERAPY: Patients receive cytarabine IV continuously over 168 hours on days 1-7 and etoposide IV over 1 hour on days 1-3. Treatment repeats every 28 days for 2 courses in the absence of disease progression or unacceptable toxicity.\n\nasparaginase: Given IM daunorubicin hydrochloride: Given IV cytarabine: Given IV or IT thioguanine: Given orally etoposide: Given IV laboratory biomarker analysis: Correlative studies","id":"OG000","title":"Treatment (Combination Chemotherapy)"}],"populationDescription":"The Microarray analysis secondary outcome is not available because the number of specimens with good quality wasn't sufficient to yield meaningful results.","reportingStatus":"POSTED","timeFrame":"At baseline and at the time of relapse (if available)","title":"Gene Expression Profiles by Microarrays","type":"SECONDARY"}