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Cancer Res. 1975 Mar;35(3):807-11.

Treatment of acute lymphoblastic leukemia in childreq with "prophylactic" intrathecal methotrexate and intensive systemic chemotherapy.


Sventy-five children under the age of 15 years, with acute lymphoblastic leukemia, were treated with a multiple drug chemotherapy regimen (L-2) and intrathecal methodtrexate. Remission was achieved in all except 1. Three died from infection early in remission and 1 was lost to follow-up. Of the remaining 70, relapse occurred in 19; in 3 children this was confined to the central nervous system (CNS) and in 1 was in both the CNS and bone marrow. Fifty-one children continue in complete remission from 14 to 54 months. Fourteen of these children have completed 3 years of chemotherapy and are disease free 2 to 18 months posttreatment. The results indicate that periodic administration on intrathecal methotrexate with no CNA irradiation, plus intensive systemic chemotherapy, can effectively control CNA leukemia and prolong the duration of complete remissions.

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