Comparison of childhood myelodysplastic syndrome, AML FAB M6 or M7, CCG 2891: Report from the Children's Oncology Group
Bibliographic record
Abstract
BACKGROUND: Myelodysplastic syndromes (MDS), acute erythroleukemia (FAB M6), and acute megakaryocytic leukemia (FAB M7) have overlapping features. PROCEDURE: Children without Down syndrome or acute promyelocytic leukemia who were newly diagnosed with primary myelodysplastic syndrome or acute myeloid leukemia (AML) M6 or M7 were compared to children with de novo AML M0-M5. All children were entered on the Children's Cancer Group therapeutic research study CCG 2891. RESULTS: The presentation and outcomes of the 132 children diagnosed with MDS (60 children), AML FAB M6 (19 children), or AML FAB M7 (53 children) were similar. Children with AML FAB M7 were diagnosed at a significantly younger age (P = 0.001). Children with MDS, M6, or M7 had significantly lower white blood cell (WBC) counts (P = 0.001), lower peripheral blast counts (P < 0.001), and an increased frequency of -7/7q- (P = 0.003) at presentation. All three groups had significantly inferior overall survival (OS) (P < 0.001) and event free survival (P < 0.001) compared with the 748 children diagnosed with AML FAB M0-M5 when assessed from entry on study. This poor survival was largely attributable to induction death and failure. However, when assessed from successful completion of induction therapy, the 5-year OS (P = 0.090)(49.1 vs. 56.9%) and disease-free survival (DFS) (P = 0.113)(38.0 vs. 46.3%) therapy were not significantly different from other children with AML. CONCLUSIONS: Childhood AML FAB M6 and AML M7 resemble MDS in presentation, poor induction success rates, and outcomes.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".