Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0026986 (myelodysplastic syndrome)
 14,926 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

One hundred nineteen patients with relapsed or refractory Hodgkin's disease (HD) received high-dose therapy followed by autologous hematopoietic progenitor cell transplantation. Three preparatory regimens, selected on the basis of prior therapy and pulmonary status, were employed. Twenty-six patients without a history of prior chest or pelvic irradiation were treated with fractionated total body irradiation, etoposide (VP) 60 mg/kg and cyclophosphamide (Cy) 100 mg/kg. Seventy-four patients received BCNU 15 mg/kg with identical doses of VP and Cy. A group of 19 patients with a limited diffusing capacity or history of pneumonitis received a novel high-dose regimen consisting of CCNU 15 mg/kg, VP 60 mg/kg and Cy 100 mg/kg. Twenty-nine patients (24%) had failed induction therapy and 35 (29%) had progressive HD within 1 year of initial chemotherapy. At 4 years actuarial survival was 52%, event-free survival was 48% and freedom from progression (FFP) was 62%. No significant differences were seen in survival data with the three preparatory regimens. Six patients died within 100 days of transplantation and 5 died at a later date of transplant-related complications. Secondary malignancies have developed in 6 patients, including myelodysplasia/leukemia in four patients and solid tumors in two patients. Regression analysis identified systemic symptoms at relapse, disseminated pulmonary or bone marrow disease at relapse and more than minimal disease at the time of transplantation as significant prognostic factors for overall and event-free survival and FFP. Patients with none of these factors enjoyed an 85% FFP at 4 years compared with 41% for patients with one or more unfavorable prognostic factors (P = .0001). Our results confirm the efficacy of high-dose therapy and autografting in recurrent or refractory HD. Although longer follow-up is necessary to address ultimate cure rates and toxicity, our data indicate that a desire to reduce late effects should drive future research efforts in favorable patients whereas new initiatives are needed for those with less favorable prognoses.
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PMID:High-dose therapy and autologous hematopoietic progenitor cell transplantation for recurrent or refractory Hodgkin's disease: analysis of the Stanford University results and prognostic indices. 902 11

We previously reported a phase 2 trial of 69 patients with newly diagnosed anaplastic or aggressive oligodendroglioma who were treated with intensive procarbazine, CCNU (lomustine), and vincristine (PCV) followed by high-dose thiotepa with autologous stem cell rescue. This report summarizes the long-term follow-up of the cohort of 39 patients who received high-dose thiotepa with autologous stem cell support. Thirty-nine patients with a median age of 43 (range, 18-67) and a median KPS of 100 (range, 70-100) were treated. Surviving patients now have a median follow-up of 80.5 months (range, 44-142). The median progression-free survival is 78 months, and median overall survival has not been reached. Eighteen patients (46%) have relapsed. Neither histology nor prior low-grade oligodendroglioma correlated with risk of relapse. Persistent nonenhancing tumor at transplant was identified in our initial report as a significant risk factor for relapse; however, long-term follow-up has not confirmed this finding. Long-term neurotoxicity has developed only in those patients whose disease relapsed and required additional therapy; no patient in continuous remission has developed a delayed neurologic injury. This treatment strategy affords long-term disease control to a subset of patients with newly diagnosed anaplastic oligodendroglioma without evidence of delayed neurotoxicity or myelodysplasia.
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PMID:High-dose chemotherapy with stem cell rescue as initial therapy for anaplastic oligodendroglioma: long-term follow-up. 1652 45

Older patients are frequently excluded from randomized studies; further, it is unclear whether the morbidity associated with chemoradiotherapy with temozolomide (TMZ) outweighs the possible survival benefit in this population. TMZ administered at a dose of 150-200 mg/m2 for 5 days every 4 weeks is the standard of care in operated glioblastoma (GBM) after concurrent chemoradiotherapy. Alternative dosing regimens, such as 1-week on/1-week off, or 3-week on/1-week off, that deliver more prolonged exposure have been observed to result in higher cumulative doses than the standard 5-day regimen and may deplete tumor-derived O6-methylguanine-DNA methyltransferase (MGMT) in tumor cells, thus sensitizing tumor cells to the effects of TMZ. Currently, chemotherapy with TMZ is an interesting alternative to radiotherapy in patients with very large tumors or in the elderly who are exposed to a higher risk of delayed neurotoxicity. The DNA damage induced by nitrosoureas and TMZ is partially repaired by MGMT. Thus, administration of the combination of nitrosoureas and TMZ might overcome MGMT-mediated resistance via MGMT depletion, yielding superior treatment results compared to the administration of treatment alone. However, the results of 2 studies that administered BCNU and CCNU with TMZ reported contradictory results. The introduction of TMZ has enabled the extension of chemotherapy treatment by 1-3 years due to the improved toxicity profile and lack of cumulative toxicity. Treatment-induced myelodysplastic syndrome with or without acute myeloblastic leukemia is a well-recognized late treatment-related complication associated with TMZ administration.
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PMID:[Treatment of glioma with temozolomide]. 1961 63

Thirty-four patients with acute myeloblastic leukaemia were treated with DAC, a schedule containing the nitrosourea CCNU (lomustine) 200 mg/m2 given on day one of treatment, together with a standard "3 + 7" remission induction schedule of daunorubicin (DR) and cytosine arabinoside (Ara-C). The results were compared with an historical control group of 24 patients who received 3 + 7 remission induction (DA). The DAC patients were older (median age 55 years) compared with the DA patients (median age 42 years), and had a higher frequency of poor prognosis features including secondary AML and prior myelodysplasia (11/34 DAC patients versus 1/24 patients receiving DA). Overall remission induction was the same for both groups (79%), but 89% of DAC patients who achieved remission did so with one course, compared with 37% of DA patients. The cytopenic phase following a single course of DAC was only slightly longer than that of a single course of DA (26 days vs. 19.5 days). DAC also gave a higher three year actuarial survival than DA (34% vs. 11%), and a lower relapse probability (44% vs. 74%). These results support the hypothesis that chemotherapy for AML may be favoured by including agents such as CCNU, which are active against both non-cycling and cycling leukaemic stem cells, in remission induction schedules.
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PMID:Rapid Remission Induction and Improved Disease Free Survival in Acute Myeloid Leukaemia Using Daunorubicin, ARA-C, and CCNU. 2745