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1.
J Clin Oncol ; 12(12): 2594-600, 1994 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-7989934

RESUMEN

PURPOSE: This study was designed to evaluate the effect on CNS relapse (CNSR) and overall relapse rates of blast cells in the CSF containing < or = 5 cells/microL at the time of diagnosis of intermediate-risk acute lymphoblastic leukemia (ALL) in children entered onto a large randomized multicenter prospective therapeutic trial (Childrens Cancer Group [CCG]-105). PATIENTS AND METHODS: We studied outcome in terms of CNSR and event-free survival (EFS) in 1,544 patients who successfully completed remission-induction therapy and had been randomized to one of four systemic chemotherapy regimens and to one of two CNS prophylaxis regimens. We compared outcome between 1,450 patients who had varying degrees of pleocytosis but no blasts in the CSF at diagnosis (blast-negative group) with 94 who had blasts detected in the CSF after cytocentrifugation but had a total CSF WBC count of < or = 5/microL (blast-positive group). RESULTS: No statistically significant differences in overall CNSR or EFS rates were observed between the two groups and no differences were found when analyzed according to age or WBC count at diagnosis, sex, or type of CNS prophylaxis (intrathecal [IT] methotrexate [MTX] alone v IT MTX plus 18 Gy cranial irradiation [CXRT]). CONCLUSION: In intermediate-risk ALL, there was no significant difference in CNSR and systemic relapse rates after standard presymptomatic CNS therapy between patients with a CSF WBC count < or = 5/microL and those without identifiable blasts in the CSF. These findings suggest that certain approaches to therapy, such as that used in this study, may eliminate the need for any additional special treatment directed at this subset of patients with CSF blasts.


Asunto(s)
Enfermedades del Sistema Nervioso Central/etiología , Leucemia-Linfoma Linfoblástico de Células Precursoras/líquido cefalorraquídeo , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Enfermedades del Sistema Nervioso Central/prevención & control , Líquido Cefalorraquídeo/citología , Niño , Preescolar , Supervivencia sin Enfermedad , Femenino , Humanos , Lactante , Recuento de Leucocitos , Tablas de Vida , Masculino , Análisis Multivariante , Leucemia-Linfoma Linfoblástico de Células Precursoras/complicaciones , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Valor Predictivo de las Pruebas , Pronóstico , Estudios Prospectivos , Recurrencia , Factores de Riesgo , Resultado del Tratamiento
2.
J Clin Oncol ; 12(2): 273-8, 1994 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-8113836

RESUMEN

PURPOSE: The Childrens Cancer Group (CCG) requires both a CSF WBC count of more than five cells per microliter and demonstration of blast cells in the cytocentrifuge specimen to support a diagnosis of CNS relapse. We reviewed the CSF examinations of patients with intermediate-risk acute lymphoblastic leukemia (ALL) to determine the clinical significance of blast cells reported in the cytocentrifuge when the total CSF cell count was normal. PATIENTS AND METHODS: Children treated on CCG-105 for ALL had CSF examinations every 12 weeks during maintenance therapy. The outcome of children who had a positive CSF cytocentrifuge examination without an elevated CSF WBC count was compared with that of children who did not have any CSF blast cells observed. RESULTS: Sixty-four patients had 81 CSF examinations with blast cells and a normal cell count. By Cox life-table regression analysis, patients with blasts had a different disease-free survival (DFS) distribution, with relapses tending to occur earlier (P = .008). However, the DFS for these patients was 63% +/- 9.6% at 5 years from the time of the abnormal cytocentrifuge result as compared with 69% +/- 1.5% for 1,490 children who did not have blasts in their CSF. This difference is not significant. CONCLUSION: Blast cells were infrequently identified in cytocentrifuge preparations of CSF when the cell count was normal. The majority of patients in whom such an event was observed have not experienced a subsequent relapse as measured by life-table analysis at 5 years. The data do not justify changing or augmenting therapy based on cytocentrifuge results alone.


Asunto(s)
Linfocitos , Leucemia-Linfoma Linfoblástico de Células Precursoras/líquido cefalorraquídeo , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Adolescente , Adulto , Centrifugación/instrumentación , Niño , Preescolar , Técnicas Citológicas/instrumentación , Femenino , Humanos , Recuento de Leucocitos , Tablas de Vida , Masculino , Resultado del Tratamiento
3.
J Clin Oncol ; 11(3): 520-6, 1993 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8445427

RESUMEN

PURPOSE: This study (Childrens Cancer Group [CCG]-105) was designed in part to determine in a prospective randomized trial whether intrathecal methotrexate (IT MTX) administered during induction, consolidation, and maintenance could provide protection from CNS relapse equivalent to that provided by cranial radiation (CXRT) in children with acute lymphoblastic leukemia (ALL) and intermediate-risk features. PATIENTS AND METHODS: We randomized 1,388 children with intermediate-risk ALL to the two CNS regimens. They received either IT MTX at intervals throughout their course of therapy or CXRT (18 Gy) during consolidation with IT MTX during induction, consolidation, and delayed intensification. Systemic therapy was randomized to one of four treatment regimens derived from a regimen used by CCG in recent studies for this patient population and three more intensive regimens based on the Berlin-Frankfurt-Munster trials. RESULTS: Life-table estimates at 7 years show a 93% and 91% CNS relapse-free survival rate for the CXRT and IT MTX groups, respectively. The corresponding event-free survival (EFS) rates are 68% and 64%. The differences are not significant. Patients who received more intensive systemic therapy had a 94% CNS relapse-free survival rate on either CXRT or IT MTX, while patients who received standard systemic therapy had 90% and 80% rates for CXRT and IT MTX, respectively (P < .0001). Patients less than 10 years of age who received CXRT or IT MTX had 72% and 71% EFS rates if they received more intensive systemic therapy. Patients 10 years or older who received CXRT had an improved EFS (61% v 53%) with a more intensive systemic program. This was primarily due to fewer bone marrow relapses (P = .04). CONCLUSIONS: IT MTX during induction, consolidation, and maintenance provides protection from CNS relapse in patients with intermediate-risk ALL equivalent to that provided by CXRT if more intensive systemic therapy is given. The CNS relapse rate with either CXRT or IT MTX is in part dependent on the associated systemic therapy. For intermediate-risk patients less than 10 years of age, IT MTX with an intensified systemic regimen provided CNS prophylaxis comparable to that provided by CXRT, whereas older patients had fewer systemic relapses if they received CXRT.


Asunto(s)
Neoplasias del Sistema Nervioso Central/prevención & control , Irradiación Craneana , Metotrexato/administración & dosificación , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Adolescente , Adulto , Neoplasias del Sistema Nervioso Central/secundario , Niño , Preescolar , Terapia Combinada , Femenino , Humanos , Lactante , Inyecciones Espinales , Tablas de Vida , Masculino , Estudios Prospectivos , Análisis de Supervivencia
4.
J Clin Oncol ; 11(3): 527-37, 1993 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8445428

RESUMEN

PURPOSE: The Berlin-Frankfurt-Munster (BFM) 76/79 trial of acute lymphoblastic leukemia (ALL) in children produced impressive disease-free survival (DFS) rates with a protocol that began with 8 weeks of intensive therapy, followed by 8 weeks of maintenance therapy, and then another 6 weeks of intensive treatment. The current study was conducted to determine the relative contributions of each of these periods of intense therapy on the DFS rates of ALL patients with intermediate presenting features. In addition, due to concerns regarding the toxicity of CNS irradiation, we compared cranial irradiation (CXRT) with intrathecal methotrexate (IT MTX) administered during induction and consolidation to IT MTX during all phases of the treatment program. PATIENTS AND METHODS: Between May 1983 and April 1989, more than 1,600 children with ALL and intermediate presenting features, as defined by the Childrens Cancer Group (CCG), were entered into a randomized trial that tested four systemic therapy regimens and two CNS programs. RESULTS: The results with a median follow-up of 57 months show that systemic regimens with a delayed intensification (Delint) phase of therapy had a 5-year event-free survival (EFS) rate of 73% compared with the control regimen EFS rate of 61% (p = .006). For children less than 10 years of age, standard three-drug induction and Delint produced a 77% 5-year EFS. IT MTX during all phases of therapy provided CNS protection comparable to the CXRT regimen in children less than 10 years of age. Children 10 years of age or older appear to have a better EFS rate with intensive induction, Delint, and CXRT. CONCLUSION: Delint improves the EFS rate of children with ALL and intermediate presenting features. Maintenance IT MTX can be safely substituted for CXRT for presymptomatic CNS therapy in children with intermediate-risk characteristics less than 10 years of age.


Asunto(s)
Metotrexato/administración & dosificación , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Adolescente , Adulto , Niño , Preescolar , Terapia Combinada , Irradiación Craneana , Esquema de Medicación , Femenino , Humanos , Lactante , Inyecciones Espinales , Tablas de Vida , Masculino , Leucemia-Linfoma Linfoblástico de Células Precursoras/radioterapia , Inducción de Remisión , Estudios Retrospectivos , Análisis de Supervivencia , Resultado del Tratamiento
5.
J Clin Oncol ; 2(3): 152-6, 1984 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-6366150

RESUMEN

Thirty-eight patients whose primary extremity or limb girdle osteosarcomas had been completely excised (37 amputations, one limb sparing procedure) were allocated at random to two treatment groups receiving respectively regular follow-up examinations plus a high-dose methotrexate (HDMTX) regimen or regular follow-up without primary adjuvant chemotherapy. Although the vincristine, HDMTX, leucovorin regimen was generally quite tolerable when given at three-week intervals for one year and most of the chemotherapy patients followed the planned HDMTX dose escalations from 3 to 6 to 7.5 g/m2, delayed methotrexate excretion limited dosage escalations in 25%. An estimated 52% of the 38 patients were surviving five years after randomization and an estimated 42% remained continuously relapse-free after five years. No significant differences between the outcomes of the 20 treated and the 18 untreated patients were apparent; however, power to detect differences was low. Furthermore, no significant differences in postmetastasis survival were apparent between the 12 treated and 10 untreated patients who relapsed. Approximately 20% of these failing patients appear to have been salvaged for long-term survival. This pilot study of HDMTX confirms the continuing need for controlled clinical trials in determining the therapeutic value of adjuvant chemotherapy programs for patients with primary osteosarcoma.


Asunto(s)
Neoplasias Óseas/tratamiento farmacológico , Metotrexato/administración & dosificación , Osteosarcoma/tratamiento farmacológico , Adulto , Amputación Quirúrgica , Neoplasias Óseas/mortalidad , Neoplasias Óseas/cirugía , Ensayos Clínicos como Asunto , Terapia Combinada , Extremidades , Femenino , Estudios de Seguimiento , Humanos , Masculino , Osteosarcoma/mortalidad , Osteosarcoma/cirugía , Proyectos Piloto , Pronóstico , Distribución Aleatoria
6.
J Clin Oncol ; 16(3): 897-906, 1998 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-9508171

RESUMEN

PURPOSE: A randomized trial designed to compare mechlorethamine, vincristine, procarbazine, and prednisone (MOPP)/doxorubicin, bleomycin, vinblastine, and daccarbazine (ABVD) (regimen A) with ABVD plus low-dose regional (extended-field) radiation therapy (EF RT) (regimen B) for the treatment of children and adolescents with stages III and IV Hodgkin's disease was conducted by the Children's Cancer Group (CCG-521) from 1986 until 1990. PATIENTS AND METHODS: One hundred eleven eligible patients were randomized, 57 to regimen A and 54 to regimen B. All patients had pathologically verified stage III or stage IV Hodgkin's disease. RESULTS: Overall survival (S) is 87% at 4 years and event-free survival (EFS) is 82%. Patients randomized to ABVD plus EF RT have a 4-year EFS of 87% compared with 77% for patients randomized to MOPP/ABVD (P = .09, two-sided). Patients randomized to ABVD plus EF RT have a 4-year S of 90% compared with 84% for patients randomized to MOPP/ABVD (P = .45, two-sided). Significant prognostic factors in multivariate analysis for EFS are stage of disease, erythrocyte sedimentation rate (ESR) at diagnosis, liver size at diagnosis, and, among stage III patients, the size of the mediastinal mass at diagnosis. The acute toxicities of treatment are largely hematopoietic in nature, whereas acute pulmonary and cardiac toxicities are modest and not limiting. CONCLUSION: The results of this study show that, in advanced-stage Hodgkin's disease in children, equivalent results can be obtained by the addition of either MOPP or low-dose EF RT to the ABVD regimen; whether the addition of either contributes to outcome was not addressed in this study and will require additional testing. It is clear, however, that MOPP chemotherapy can safely be eliminated from front-line combination chemotherapy regimens for advanced Hodgkin's disease in pediatric patients.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Enfermedad de Hodgkin/tratamiento farmacológico , Adolescente , Bleomicina/administración & dosificación , Niño , Terapia Combinada , Dacarbazina/administración & dosificación , Doxorrubicina/administración & dosificación , Femenino , Enfermedad de Hodgkin/patología , Enfermedad de Hodgkin/radioterapia , Humanos , Masculino , Mecloretamina/administración & dosificación , Análisis Multivariante , Estadificación de Neoplasias , Prednisona/administración & dosificación , Procarbazina/administración & dosificación , Pronóstico , Modelos de Riesgos Proporcionales , Análisis de Supervivencia , Vinblastina/administración & dosificación , Vincristina/administración & dosificación
7.
J Clin Oncol ; 19(9): 2390-6, 2001 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-11331317

RESUMEN

PURPOSE: To determine the toxicity and response rate in children treated with dexamethasone, etoposide, cisplatin, high-dose cytarabine, and L-asparaginase (DECAL) for recurrent non-Hodgkin's lymphoma (NHL) and Hodgkin's disease (HD). PATIENTS AND METHODS: Ninety-seven children with recurrent NHL (n = 68) or HD (n = 29) were enrolled. Treatment consisted of two cycles of DECAL, then bone marrow transplantation or up to four cycles of ifosfamide, mesna, and etoposide alternating with DECAL maintenance therapy. RESULTS: After two cycles of DECAL induction therapy, complete response (CR) or partial response (PR) was reported in 19 (65.5%; 10 CRs and nine PRs) of 29 patients with HD and 29 (41.6%; 23 CRs and six PRs) of 68 patients with NHL. When only 24 patients with HD and 58 patients with NHL who were assessable for response were considered, the response rates were 79.2% (19 of 24 patients) and 50.0% (29 of 58 patients), respectively. Five-year event-free survival was 26% +/- 9% and 23% +/- 5% in patients with HD and NHL, respectively. Five-year survival was 31% +/- 14% and 30% +/- 6%, respectively. Although median time to treatment failure was significantly longer in patients with HD (EFS, P =.002; survival, P =.011), this difference did not translate into a higher long-term survival. Grade 3 or 4 toxic effects were observed during induction in 70 (72%) of 97 patients and during maintenance in 45 (70%) of 64 courses of DECAL therapy. Pancytopenia and systemic infections in particular were frequently observed. Other toxic effects were uncommon. Although not a formal part of the therapy or the study design, 42 patients who responded to therapy who underwent bone marrow transplant did not show any benefit from this approach. CONCLUSION: DECAL is an effective and tolerable salvage regimen for treating patients with recurrent NHL and HD.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Trasplante de Médula Ósea , Enfermedad de Hodgkin/tratamiento farmacológico , Linfoma no Hodgkin/tratamiento farmacológico , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Asparaginasa/administración & dosificación , Niño , Citarabina/administración & dosificación , Dexametasona/administración & dosificación , Etopósido/administración & dosificación , Femenino , Factor Estimulante de Colonias de Granulocitos/uso terapéutico , Enfermedad de Hodgkin/mortalidad , Humanos , Linfoma no Hodgkin/mortalidad , Masculino , Tasa de Supervivencia
8.
Leukemia ; 3(10): 736-9, 1989 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-2779288

RESUMEN

The Childrens Cancer Study Group used data from a self-administered questionnaire to compare the observed and expected frequencies of multiple sclerosis (MS) in the parents of 1,027 children with acute lymphoblastic leukemia (ALL), 2,053 parents of children with other cancers, and in parents of 838 children without cancer. There were significant excesses seen for mothers of children with ALL (relative risk, RR = 4.0, p = 0.02), but no excess was found for acute nonlymphoblastic leukemia or lymphoma. There was no increase risk of MS for the fathers of these children.


Asunto(s)
Esclerosis Múltiple/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Masculino , Esclerosis Múltiple/etiología , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiología , Encuestas y Cuestionarios
9.
Clin Pharmacol Ther ; 41(4): 384-7, 1987 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-3470165

RESUMEN

Fourteen children (aged 3 to 14 years) with average-risk acute lymphoblastic leukemia were studied after an oral dose of 6-mercaptopurine (6-MP) (75 mg/m2) administered alone and, on the next day, concurrently with oral methotrexate (20 mg/m2). When 6-MP was administered alone, both the peak plasma concentration (15 to 150 ng X ml-1) and the AUC (36 to 340 ng X ml-1 X hr) were highly variable. Concurrent methotrexate resulted in a 31% increase in the AUC (P less than 0.01) and a 26% increase in peak plasma levels (P less than 0.05) of 6-MP. The AUC of methotrexate correlated with the degree of increase in 6-MP plasma concentrations. These findings are consistent with previous in vitro studies demonstrating that methotrexate is an inhibitor of xanthine oxidase, the enzyme that catabolizes 6-MP to the inactive metabolite thiouric acid. Although the increases in 6-MP AUC and peak plasma concentrations resulting from concurrent methotrexate administration were statistically significant, this interaction is probably not clinically significant at standard low oral doses of methotrexate in light of the wide interpatient variability in these pharmacokinetic parameters of 6-MP.


Asunto(s)
Leucemia Linfoide/metabolismo , Mercaptopurina/metabolismo , Metotrexato/farmacología , Administración Oral , Adolescente , Disponibilidad Biológica , Niño , Preescolar , Cromatografía Líquida de Alta Presión , Interacciones Farmacológicas , Femenino , Humanos , Cinética , Masculino , Mercaptopurina/sangre
10.
Int J Radiat Oncol Biol Phys ; 10(12): 2363-8, 1984 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-6210281

RESUMEN

This study was undertaken to evaluate the toxicity of sequential half-body irradiation (SHBI) and combination chemotherapy (5-FU, VM-26 and BCNU) in patients who had failed primary aggressive therapy for their Ewing's sarcoma. A secondary goal was to evaluate the response of these previously treated patients to the combination of systemic radiation and multi-agent chemotherapy. The first patient in the study was treated with SHBI only and died 139 days following retreatment. Four subsequent patients successfully received the first cycle of combination chemotherapy. However, only one completed both upper and lower half-body irradiation while the remaining three patients, because of rapid progression of their disease, completed either the upper or the lower portion of their half-body irradiation (HBI). The time from retreatment to disease progression in these four patients ranged from 45 to 97 days (mean 79 days) and the time from retreatment to death ranged from 72 to 193 days (mean 126 days). The combination chemotherapy was tolerated well by all the patients, and the SHBI was accompanied by mild nausea and some vomiting within the first few hours following treatment. Failure to give the second half of the half-body irradiation and to complete further chemotherapy in three of the patients was a result of the progressive nature of the patients' disease and not to any limitations imposed by poor blood counts. Half-body irradiation provided good pain relief within 24 hours for all of the patients. Systemic radiation contributes to the palliative treatment of patients with failed Ewing's sarcoma, but appears to be relatively ineffective when the tumor burden is high.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Óseas/terapia , Sarcoma de Ewing/terapia , Irradiación Corporal Total , Adolescente , Neoplasias Óseas/tratamiento farmacológico , Neoplasias Óseas/radioterapia , Neoplasias Óseas/secundario , Carmustina/administración & dosificación , Niño , Fluorouracilo/administración & dosificación , Humanos , Neoplasias Pulmonares/secundario , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/terapia , Cuidados Paliativos , Sarcoma de Ewing/tratamiento farmacológico , Sarcoma de Ewing/radioterapia , Tenipósido/administración & dosificación
11.
Thromb Haemost ; 80(5): 773-8, 1998 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9843170

RESUMEN

Recombinant factor VIIa (rFVIIa: NovoSeven; Novo Nordisk) has proven efficacy in the treatment of haemophilic patients with inhibitors. This prospective, double-blind study compared rFVIIa (35 vs. 90 microg/kg) in the initiation and maintenance of haemostasis during and after elective surgery. Patients with inhibitors (FVIII, n = 26; FIX, n = 3) received rFVIIa immediately prior to incision; intraoperatively as needed; every 2 h for the first 48 h; and every 2-6 h for the following 3 days. Haemostasis was evaluated during surgery, at 0, 8, 24 and 48 h and 3, 4 and 5 days after wound closure. After day 5, open-label rFVIIa (90 microg/kg) was available for maintenance. Intraoperative haemostasis was achieved in 28/29 patients. All high-dose patients and 12/15 low dose patients had satisfactory haemostasis during the first 48 h. Twenty-three patients (13/14 high dose) successfully completed the study. Although the 35 microg/kg dose is probably sub-optimal for post-operative management, at least in major procedures, rFVIIa 90 microg/kg is an effective first-line option in surgery for patients with inhibitors.


Asunto(s)
Autoanticuerpos/inmunología , Procedimientos Quirúrgicos Electivos , Factor IX/inmunología , Factor VIII/inmunología , Factor VIIa/uso terapéutico , Hemofilia A/terapia , Hemofilia B/terapia , Hemostasis Quirúrgica/métodos , Isoanticuerpos/inmunología , Adolescente , Adulto , Niño , Preescolar , Método Doble Ciego , Factor VIIa/administración & dosificación , Femenino , Hemofilia A/complicaciones , Hemofilia A/inmunología , Hemofilia B/complicaciones , Hemofilia B/inmunología , Hemorragia/prevención & control , Humanos , Lactante , Masculino , Estudios Prospectivos , Proteínas Recombinantes de Fusión/administración & dosificación , Proteínas Recombinantes de Fusión/uso terapéutico , Resultado del Tratamiento
12.
Thromb Haemost ; 80(6): 912-8, 1998 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-9869160

RESUMEN

OBJECTIVE: To assess the safety and efficacy of a fixed dose of recombinant activated factor VII (rFVIIa; NovoSeven) in the home setting for mild to moderately severe joint, muscle; and mucocutaneous bleeding episodes in patients with haemophilia A or B with inhibitors. DESIGN: Multicentre, open-label, single arm, phase III study of one year duration. METHODS; Patients or their caregivers administered up to three doses of rFVIIa (90 microg/kg i.v.) at 3 h intervals within 8 h of the onset of a mild to moderate bleeding episode. Once the subject considered that rFVIIa had been "effective" with regard to haemostasis (after 1-3 injections), one further (maintenance) dose of rFVIIa was administered. RESULTS: Of 60 patients enrolled, 56 experienced at least one bleed, and 46 completed the one year study. 614 of 877 bleeds (70%) were evaluable according to protocol definitions. Haemostasis was rated as "effective" in 92% (566/614) of evaluable bleeds after a mean of 2.2 injections. For successfully treated episodes, the time from onset of bleeding until administration of the first injection was 1.1+/-2.0 h (mean+/-SD). Twenty-four hours after initial successful response, haemostasis was reported as having been maintained in 95% of cases. Efficacy was comparable for muscle, joint and target joint, and mucocutaneous bleeding episodes. In an intent-to-treat analysis of all 877 bleeding events, efficacy outcomes were equivalent to the evaluable bleeds, with an effective response in 88% of treated episodes. Treatment-related adverse events occurred in 32 (3% of all) bleeding episodes and consisted of re-bleeds/new bleeds in more than 50% (18/32) of these events. A single episode of superficial thrombophlebitis was the only thrombotic complication encountered, and there were no patient withdrawals due to adverse events. Development of FVII(a) antibodies could not be detected, and hypersensitivity reactions to rFVIIa were not reported. CONCLUSION: rFVIIa is effective and well tolerated when used in the home setting to treat mild to moderate bleeding episodes in patients with haemophilia A or B with inhibitors.


Asunto(s)
Factor IX/inmunología , Factor VIII/inmunología , Factor VIIa/uso terapéutico , Hemofilia A/complicaciones , Hemorragia/tratamiento farmacológico , Hemostáticos/uso terapéutico , Atención Domiciliaria de Salud , Isoanticuerpos/sangre , Adolescente , Adulto , Niño , Preescolar , Esquema de Medicación , Factor VIIa/administración & dosificación , Factor VIIa/efectos adversos , Femenino , Hemartrosis/tratamiento farmacológico , Hemartrosis/etiología , Hemofilia A/inmunología , Hemofilia A/terapia , Hemofilia B/complicaciones , Hemofilia B/inmunología , Hemofilia B/terapia , Hemorragia/etiología , Hemostáticos/administración & dosificación , Hemostáticos/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Proteínas Recombinantes de Fusión/administración & dosificación , Proteínas Recombinantes de Fusión/efectos adversos , Proteínas Recombinantes de Fusión/uso terapéutico , Resultado del Tratamiento
13.
Mayo Clin Proc ; 71(9): 854-6, 1996 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-8790260

RESUMEN

OBJECTIVE: To ascertain the usefulness of bone marrow and cerebrospinal fluid (CSF) examinations in identifying or predicting relapse in children with acute lymphoblastic leukemia (ALL) before discontinuation of chemotherapy. MATERIAL AND METHODS: We retrospectively reviewed the medical records of 113 children with ALL in first continuous complete remission who had undergone routine end-of-therapy bone marrow aspiration and CSF examinations. RESULTS: One patient had frank bone marrow relapse at the completion of therapy, which was evident by the presence of blasts in the peripheral blood. None of the other 112 patients had morphologic evidence of bone marrow relapse or positive CSF cytologic findings. The seven subsequent relapses could not have been predicted by the results of end-of-therapy bone marrow or CSF studies. CONCLUSION: Routine morphologic examination of the bone marrow and CSF at the completion of therapy for ALL has no diagnostic or prognostic value.


Asunto(s)
Médula Ósea/patología , Leucemia-Linfoma Linfoblástico de Células Precursoras/líquido cefalorraquídeo , Leucemia-Linfoma Linfoblástico de Células Precursoras/patología , Adolescente , Líquido Cefalorraquídeo/citología , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Valor Predictivo de las Pruebas , Recurrencia , Estudios Retrospectivos
14.
Mayo Clin Proc ; 53(4): 217-20, 1978 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-273134

RESUMEN

Five children had six episodes of central nervous system leukemia which were characterized by features suggestive of hypothalamic infiltration. All five patients had been in prolonged bone marrow remission and had no other evidence of active leukemia when the hypothalamic syndrome was diagnosed. Five of the six episodes responded promptly to intrathecally administered methotrexate and cranial irradiation, but bone marrow relapse, which was resistant to further therapy, developed within 4 months in three patients and after 18 months in the fourth. Only one patient remains in bone marrow remission without recurrence of hypothalamic symptoms 10 months later.


Asunto(s)
Ingestión de Alimentos , Hipotálamo , Leucemia Linfoide/complicaciones , Peso Corporal , Preescolar , Humanos , Lactante , Síndrome
15.
Mayo Clin Proc ; 69(7): 641-4, 1994 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-8015327

RESUMEN

The treatment of bleeding episodes and the provision of perioperative hemostasis in patients with hemophilia in whom coagulation factor inhibitors have developed are a major therapeutic challenge because ordinary replacement therapy is usually ineffective. Herein we report the use of recombinant activated factor VII (rFVIIa) in providing successful hemostasis in a patient with hemophilia A and a high-titer inhibitor to factor VIII during a major orthopedic operation. rFVIIa (102 micrograms/kg) was administered intravenously every 2 to 3 hours for a total of 9 days. No excessive bleeding occurred intraoperatively or postoperatively, and no adverse effects attributable to rFVIIa were observed. This surgical procedure probably represented a greater hemostatic challenge than any previously reported operation in which rFVIIa was used. Thus, this article adds considerably to the growing body of literature that suggests the safety and efficacy of rFVIIa in providing perioperative hemostasis and treating severe bleeding episodes in patients with hemophilia and inhibitors refractory to other treatment modalities.


Asunto(s)
Factor VIII/antagonistas & inhibidores , Factor VIIa/administración & dosificación , Hemofilia A/sangre , Técnicas Hemostáticas , Ortopedia , Adolescente , Contractura/etiología , Contractura/cirugía , Hemartrosis/complicaciones , Hemofilia A/complicaciones , Hemostasis/efectos de los fármacos , Humanos , Rodilla , Masculino , Proteínas Recombinantes
16.
Mayo Clin Proc ; 62(5): 379-85, 1987 May.
Artículo en Inglés | MEDLINE | ID: mdl-3573826

RESUMEN

The incidence of abnormal results of coagulation tests and the risks for postoperative hemorrhage were assessed in 235 patients with congenital heart disease. Preoperatively, the prothrombin time, partial thromboplastin time, activated partial thromboplastin time, thrombin time, or platelet count was abnormal in 45 of the 235 patients (19%), a significantly higher incidence than that expected in a normal population (P less than 0.002). Prolonged values for the prothrombin time or the partial thromboplastin time or activated partial thromboplastin time were seen most frequently. Further evaluation in eight of the patients with prolonged prothrombin time or partial thromboplastin or activated partial thromboplastin time showed decreased levels of either factor VII or IX in six of them, suggesting that impaired vitamin K-dependent carboxylation is commonly present. Normal results of preoperative coagulation tests do not exclude the presence of a major bleeding diathesis (von Willebrand's disease was later diagnosed in a patient with such findings). The use of blood products during subsequent cardiac operations was not significantly different in patients with normal or abnormal test results. Two of the three patients who required reoperation and were found to have a nonsurgical cause of bleeding had abnormalities in two or more of the preoperative coagulation tests. This finding suggests that abnormal results of preoperative coagulation tests may be predictive of defective hemostasis in the postoperative period.


Asunto(s)
Cardiopatías Congénitas/sangre , Hemostasis , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Cuidados Preoperatorios
17.
Mayo Clin Proc ; 63(4): 362-7, 1988 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-3352319

RESUMEN

Twelve patients who had received mantle radiotherapy for Hodgkin's lymphoma during childhood underwent cardiopulmonary testing 7 years or more after the initial diagnosis and treatment. All but one patient had been asymptomatic. Results of echocardiography, pulmonary function tests, or exercise studies were abnormal in 9 of the 12 patients. Long-term follow-up of cardiopulmonary function will be important to determine the ultimate significance of these abnormalities. These potential complications must be considered in planning prospective therapeutic studies in children with Hodgkin's disease.


Asunto(s)
Corazón/fisiopatología , Enfermedad de Hodgkin/fisiopatología , Pulmón/fisiopatología , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Niño , Terapia Combinada , Femenino , Pruebas de Función Cardíaca , Enfermedad de Hodgkin/tratamiento farmacológico , Enfermedad de Hodgkin/radioterapia , Humanos , Masculino , Radiografía Torácica , Pruebas de Función Respiratoria
18.
Mayo Clin Proc ; 58(3): 182-6, 1983 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-6827862

RESUMEN

Two patients--one an infant and the other an adolescent--with transposition of the great arteries and hemophilia underwent a successful major reconstructive open-heart surgical procedure. Despite a severe coagulation deficiency, a major reconstructive cardiac operation was performed with the use of a detailed replacement plan, which took into consideration the potency of the replacement material and its potential hazards, biologic half-life, and anticipated in vivo recovery on the basis of the patient's plasma volume. To our knowledge, these are the first reports of successful surgical repair of this type in patients with severe coagulation factor deficiency.


Asunto(s)
Hemofilia A/complicaciones , Hemofilia B/complicaciones , Transposición de los Grandes Vasos/cirugía , Adolescente , Pruebas de Coagulación Sanguínea , Transfusión Sanguínea/métodos , Puente Cardiopulmonar , Hemofilia A/terapia , Hemofilia B/terapia , Humanos , Lactante , Masculino , Cuidados Posoperatorios , Complicaciones Posoperatorias/prevención & control , Cuidados Preoperatorios , Transposición de los Grandes Vasos/complicaciones
19.
Mayo Clin Proc ; 50(7): 402-6, 1975 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-1171340

RESUMEN

The platelets of a patient with the Bernard-Soulier syndrome were studied by electron microscopy. The main abnormalities were the presence of giant and often round platelets, hypertrophic and frequently widely dilated open canalicular system, disorganized microtubules, and platelets with sparse or absent granulation. Although well defined, these ultrastructural morphologic aberrations are not considered diagnostic or pathognomonic of the syndrome.


Asunto(s)
Plaquetas/ultraestructura , Púrpura Trombocitopénica/genética , Adolescente , Retículo Endoplásmico/ultraestructura , Aparato de Golgi/ultraestructura , Humanos , Linfocitos/ultraestructura , Masculino , Microscopía Electrónica , Púrpura Trombocitopénica/sangre , Púrpura Trombocitopénica/patología , Síndrome
20.
Mayo Clin Proc ; 55(4): 271-6, 1980 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-7359955

RESUMEN

Extra-adrenal pheochromocytomas are more common in children (30%) than in adults (10%). Of the extra-adrenal sites, the intrathoracic site is the most rare. A 15-year-old boy had a pheochromocytoma successfully removed from the left paraspinal region of his chest. Four years before removal, he had radiation therapy of 3,500 rads to the tumor because of its apparent nonresectability. After therapy, there was transient clinical and biochemical improvement. Preoperative angiography and computed tomography helped define the anatomy of the tumor vessels and the relationship to the thoracic aorta of the tumor. These studies also aided in discounting any other site for the pheochromocytoma, either adrenal or extramedullary. A slow-growing pulmonary metastatic lesion was subsequently identified and successfully excised.


Asunto(s)
Feocromocitoma/cirugía , Neoplasias Torácicas/cirugía , Neoplasias de las Glándulas Suprarrenales/orina , Niño , Humanos , Neoplasias Pulmonares/secundario , Masculino , Metanefrina/orina , Feocromocitoma/complicaciones , Feocromocitoma/diagnóstico por imagen , Feocromocitoma/orina , Neoplasias Torácicas/complicaciones , Neoplasias Torácicas/diagnóstico por imagen , Neoplasias Torácicas/orina , Tomografía Computarizada por Rayos X
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