Outcome of Patients Age 60 and Over with Acute Lymphoblastic Leukemia (ALL) Treated with a Modified Pediatric Protocol
Notice bibliographique
Résumé
Abstract Acute lymphoblastic leukemia (ALL) in patients over age 60 years is a poor prognosis disease with complete remission rate of 50–60% and median overall survival of less than a year. Between July 2004 and June 2007, we treated 17 elderly patients with newly diagnosed ALL with a modified pediatric protocol that included a remission induction phase, a CNS prophylaxis phase with intrathecal chemotherapy × 4, a 21-week intensification phase (7 cycles × 3 weeks each), and a 72-week maintenance phase. Induction chemotherapy consisted of vincristine 2 mg weekly × 3, doxorubicin 30mg/m2 × 2 doses, methotrexate 40mg/m2 × 1, asparaginase 12,000/m2 U × 1, and dexamethasone 40mg/day × 8 doses; BCR-ABL+ patients received imatinib mesylate 400 mg daily × 16 days instead of asparaginase. The intensification phase consisted of vincristine 2 mg × 7 doses, doxorubicin 30mg/m2 × 7 doses, asparaginase 6000 U/m2 weekly × 21 doses, 6-mercaptopurine 14/21 days, and dexamethasone 6 mg BID × 5/21 days. BCR-ABL+ patients received imatinib 400 mg daily × 14/21 days instead of asparaginase. Maintenance was the same as intensification except that no asparaginase was given. The median age was 66 years (range 60–78 years). Seven patients (41%) were BCR-ABL+ and four (24%) were pre-B with WBC > 30. Major side effects during the induction phase included infection (71%), hyperglycemia requiring insulin (24%), and cardiac toxicity (18%). The complete remission (CR) rate was 71% with an induction mortality of 29%. Of the five induction deaths, four were due to bacterial sepsis or pneumonia, and one was due to tumor lysis syndrome. CNS prophylaxis was well-tolerated except in one patient who required IV hydration for nausea/vomiting. Eleven patients proceeded to intensification. Major side effects during the intensification phase included infections (64%), peripheral neuropathy (64%), thrombosis (27%), and grade 3 nausea/vomiting (27%). Two patients required hospitalization during the intensification phase; there was one myocardial infarction and one acute pancreatitis. Eleven patients proceeded to the maintenance phase; major side effects during maintenance included infections (36%) and grade 3 peripheral neuropathy (18%). Two patients (17%) have relapsed, both during early maintenance phase; both had had a number of dose modifications and delays during intensification. The one year overall survival (OS) was 71% and the median OS has not been reached. After a median follow-up duration of 17 months (range 9–40 months), the median relapse-free survival (RFS) of the CR patients has not been reached; the one year RFS was 82%. These results show that administering a modified pediatric protocol to patients over age 60 years with ALL is feasible with an improved CR rate than generally reported. The OS and RFS also compare favorably to previously reported results, although further follow-up is required. However, induction mortality was high, and infectious complications persisted throughout the entire course of induction and intensification, though much diminished during the maintenance phase. Accrual to the protocol is continuing.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».