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Query: UMLS:C0027651 (tumor)
 685,946 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The cellular levels of topoisomerase II expression were compared between 10 fresh human tumors and normal tissues to predict the selective anticancer effect of its inhibitors such as adriamycin and VP-16. Topoisomerase II expression was observed in 9 of the 10 tumor tissues (90.0 per cent), 3 of which showed extremely high levels, whereas only 5 of the normal tissues (50.0 per cent) expressed any cellular topoisomerase II and the levels were not higher than those seen in the cancer cells. Six of the 9 positive tumors showed a higher level of topoisomerase II expression than the normal tissues, while the other 3 showed the same level. It can be interpreted from these results that topoisomerase II inhibitors could be effective in cancer patients due to the greater level of this enzyme in tumor cells than in normal tissues. Thus, it is suggested that a comparative analysis of topoisomerase II expression between tumors and normal tissues may be useful for predicting the selective cytotoxicity of topoisomerase II inhibitors in clinical practice.
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PMID:mRNA expression of topoisomerase II in human tumors and normal tissues. 166 37

Selective removal of malignant cells (purging) from bone marrow (BM) is a concern in autologous BM transplantation (ABMT). Use of vincristine, etoposide, or doxorubicin for purging could be rendered ineffective by the presence of multidrug-resistant (MDR) tumor cells. To circumvent this particular problem, we investigated whether 17F9, a monoclonal IgG2b antibody directed against the cell surface product of the MDR gene, P-glycoprotein, is effective in selective removal of MDR cells from BM when used with rabbit complement (C'). Using two different cell lines we have demonstrated that 17F9 + C' selectively lyses MDR-positive cells. Three rounds of antibody + C' resulted in 96.4% +/- 3.6% kill of K562/DOX and 100% +/- 0% of CEM/VLB cells. Mixtures of malignant cells and normal BM resulted in 99.85% removal of K562/DOX and 99.91% removal of CEM/VLB clonogenic cells. This treatment did not affect normal committed precursors compared with C' alone. The addition of the cytotoxic agent etoposide (VP-16) following antibody purging results in a 4.6 log reduction of malignant cells. Furthermore, this antibody was effective when used against patients' leukemic blasts. These results suggest the use of 17F9 + C' is effective and selective for removal of MDR cells from BM before ABMT and the addition of VP-16 enhances the purging efficacy.
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PMID:A combined approach for purging multidrug-resistant leukemic cell lines in bone marrow using a monoclonal antibody and chemotherapy. 167 56

Since 1984, we have treated 26 patients with malignant ovarian germ cell tumors with a combination of bleomycin, etoposide (VP-16), and cisplatin (BEP) at The University of Texas MD Anderson Cancer Center (UTMDACC). The median age of the patients was 19 years (range, 8 to 32). All patients underwent initial surgery (unilateral salpingo-oophorectomy in 14, unilateral salpingo-oophorectomy plus abdominal hysterectomy in one, and bilateral salpingo-oophorectomy with or without hysterectomy in 11 patients). Twenty patients had no residual disease, three had less than or equal to 2 cm (one each, dysgerminoma, mixed, and immature teratoma), and three had more than 2 cm lesions (two dysgerminomas, one endodermal sinus tumor). Fourteen patients had pure dysgerminoma (five, stage I; one, stage II; six, stage III; and two, recurrent), and 12 had nondysgerminomatous tumors (five, stage I; two, stage II; three, stage III; and two, recurrent). All four patients with clinically measurable disease had a complete response. All four patients who underwent second-look laparotomy had negative findings. Twenty-five patients (96%) remain in sustained remission 10.4 to 54.4 months from the start of chemotherapy. One patient died of progressive disease 14 months after beginning chemotherapy. We conclude that the BEP regimen has excellent activity and acceptable toxicity in patients with malignant ovarian germ cell tumors.
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PMID:Treatment of malignant germ cell tumors of the ovary with bleomycin, etoposide, and cisplatin. 169 Feb 72

The treatment and outcome of 57 patients with poor-prognosis metastatic nonseminomatous germ cell cancer were reviewed. The patients were treated between 1980 and 1986. Poor-prognosis patients were characterized by the presence of at least one of the following findings: (1) retroperitoneal tumor mass greater than 10 cm; (2) greater than 3 lung metastases, the largest being greater than 2 cm; (3) extrapulmonary, extralymphatic, metastases; and (4) extragonadal primary tumor. The intended treatment consisted of cisplatin-based combination chemotherapy followed by secondary surgery. From 1980 to 1983 a modified Einhorn regimen was used (cisplatin 100 mg/m2 per cycle; CVB). In case of unacceptable vinblastine toxicity, this drug was substituted by VP-16 (500 mg per m2 per cycle; BEP20). From October 1983 the intention was to replace at least 3 of the CVB/BEP20 cycles by BEP60 cycles (days 1-3: cisplatin 60 mg/m2, days 1-3: VP-16 120 mg/m2; days 1, 5, 15: bleomycin 30 mg). There were 33 patients in the CVB/BEP20 group and 24 patients in the BEP60 group. Two patients of the CVB/BEP20 group and 6 patients of the BEP60 group were not evaluable for response, but are included in the survival analysis. The reasons for exclusion from response evaluation were that these patients could not receive the intended chemotherapy in appropriate doses due to severely reduced pretreatment general condition or due to early death. Fourteen patients with multiple lung metastases but no other poor-prognosis criteria had a 93% survival indicating that they did not represent poor-prognosis germ cell cancer. After excluding these 14 patients, the 4-year survival was 58% for 19 CVB/BEP20 patients and 72% for BEP60 patients. This difference did not reach the level of statistical significance in this limited series. The introduction of high-dose cisplatin had thus not led to clearly superior treatment results as compared to CVB/BEP20.
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PMID:Management of patients with poor-prognosis nonseminomatous germ cell cancer. 169 84

Two children with primary intracranial mixed germ cell tumors are described who were successfully treated by partial resection of the tumor followed by sequential combination chemotherapy without radiation therapy. The chemotherapy consisting of VP-16 and cisplatin alternating with vincristine, methotrexate, and bleomycin resulted in apparent complete response after 6 to 7 months of treatment. Disease-free remission has continued 30-34 months off therapy. A small residual mass in one patient continues to decrease in size on magnetic resonance imaging and is presumed to represent postsurgical change rather than malignant tumor. This report demonstrates that chemotherapy may be effective in primary germ cell tumors of the suprasellar and pineal regions and could be considered for primary treatment instead of radiotherapy.
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PMID:Postoperative chemotherapy for primary intracranial germ cell tumor. 169 5

Testicular cancer has become a model for a curable neoplasm. Prior to the advent of cisplatin combination chemotherapy, standard chemotherapy consisted of dactinomycin, alone or in combination with chlorambucil and methotrexate. Disseminated germ cell tumors were chemosensitive to these older regimens, with a 50% objective response rate and a 10% to 20% complete remission rate; however, the cure rate was only 5% to 10%. In 1974, we began our initial cisplatin plus vinblastine plus bleomycin (PVB) chemotherapy. Thirty-three of 47 patients with disseminated germ cell tumors treated from 1974 to 1976 achieved a complete remission (CR), and an additional five (11%) were rendered disease-free with post-PVB resection of teratoma or carcinoma. Twenty-seven (57%) of these patients are continuously disease-free with a minimal follow-up of 13 + years. Thus, cisplatin-based chemotherapy produced a one-log increase in the cure rate compared with dactinomycin. A subsequent phase III study performed from 1976 to 1978 demonstrated that the vinblastine dosage could be reduced 25% from 0.4 mg/kg to 0.3 mg/kg with a reduction in toxicity but without any decrement in therapeutic efficacy. A third-generation PVB study from 1978 to 1981 documented that optimal cure rates were achieved with 12 weeks of induction therapy with PVB and that long-term maintenance therapy with vinblastine was unnecessary. In 1978, we initiated salvage therapy with cisplatin plus etoposide (VP-16) in patients not cured with PVB, and 25% of these patients were subsequently cured with this regimen. This represented the first time an adult solid tumor had been cured with a second-line regimen. In 1983, we began studies with third-line therapy with cisplatin plus ifosfamide combination chemotherapy, and even in this refractory setting, approximately 20% of patients are curable. From 1981 to 1984, we compared cisplatin plus VP-16 plus bleomycin (PVP16B) with PVB as first-line chemotherapy. There was a significant reduction in neuromuscular toxicity favoring the VP-16 arm, and furthermore, 78% of these patients were continuously disease-free compared with 66% with PVB. Approximately 75% of patients with disseminated germ cell tumors will be cured with PVP16B, and an additional 10% are curable with salvage chemotherapy. This represents the highest cure rate in any adult malignancy.
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PMID:Treatment of testicular cancer: a new and improved model. 206 66

A malignant rhabdoid tumor occurring as a primary hepatic neoplasm in a six-month-old white infant is reported. It was treated by an attempt at total resection involving right hepatic lobectomy and by chemotherapy with cis-platinum, VP-16, and Adriamycin. Despite this, recurrence of the tumor resulted in the girl's death within three months. The neoplasm showed typical light microscopic features of malignant rhabdoid tumor as well as filamentous cytoplasmic inclusions by electron microscopic examination and staining for both cytokeratin and vimentin by immunohistochemistry. The classic clinicopathologic features of this tumor support the concept that malignant rhabdoid tumors similar to those of the kidney may occur in extrarenal sites.
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PMID:Malignant rhabdoid tumor of the liver. A distinct clinicopathologic entity. 170 May 99

This is a Southwest Oncology Group (SWOG) prospective randomized trial of cisplatin, vinblastine, and bleomycin (PVB) versus vinblastine, cisplatin, and etoposide (VP-16) (VPV) in the treatment of advanced germ cell tumors of the testis. The study objective was to determine what effect the replacement of bleomycin with VP-16 has on complete response (CR), survival, and drug toxicity. One hundred sixty-nine patients were registered and randomized. Of these patients, 160 were assessable for response. All had histologically confirmed disseminated germ cell neoplasms of testicular origin. Forty-six had minimal metastatic disease, and 114 had maximal disease. Seventy-seven were randomized to PVB and 83 to VPV chemotherapy. There was no significant difference in pretreatment characteristics between the two arms with regard to tumor burden, histologic type, and overall performance status. Patients received four courses of induction chemotherapy, either PVB (cisplatin 120 mg/m2 day 3, vinblastine 12 mg/m2 day 1, bleomycin 15 U/m2 twice per week) or VPV (vinblastine 8 mg/m2 day 1, cisplatin 120 mg/m2 day 3, VP-16 50 mg/m2 days 2 to 5). Chemotherapy was given every 3 weeks. Cytoreductive surgery was done postinduction if a chemotherapy CR was not achieved. There was no difference in the percentage of patients achieving a disease-free status between PVB (77%) and VPV (73%). The mean leukocyte nadir was similar for both treatments, but the mean platelet nadir was significantly lower (P = .003) in the VPV arm. All bleomycin-related toxicities (pulmonary, mucositis, skin) were avoided in the VPV arm. We conclude that bleomycin can be replaced in first-line therapy for advanced germ cell tumors without sacrificing efficacy and with the advantage of avoiding unnecessary drug toxicity.
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PMID:A randomized trial of cisplatin, vinblastine, and bleomycin versus vinblastine, cisplatin, and etoposide in the treatment of advanced germ cell tumors of the testis: a Southwest Oncology Group study. 170 84

A 26-year-old male with an intracranial teratoma, metastasizing from a testicular yolk sac tumor refractory to cis-diamminedichloroplatinum (CDDP), vinblastin, and bleomycin (PVB) therapy, was successfully treated with a combination of etoposide (VP-16), CDDP, and ACNU (salvage chemotherapy). Emergency surgery for subcortical hemorrhage discovered the metastasis, diagnosed as a yolk sac tumor. CDDP chemotherapy failed to prevent recurrence, and total removal was impossible due to subdural invasion. He underwent radiation therapy and salvage chemotherapy. A third operation found only scar tissue. Maintenance salvage chemotherapy was continued. He was doing well 30 months after the first operation.
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PMID:Complete remission of metastatic teratoma from malignant testicular tumor using salvage chemotherapy with VP-16 (etoposide), CDDP, and ACNU--case report. 171 63

The pilot protocol of the German Society of Pediatric Oncology for treatment of non testicular germ cell tumors was initiated in November 1987. The final protocol was started at 1. 1. 89. Different therapy was administered depending on histology, primary localisation or stage of tumors. Patients with malignant germ cell tumors such as dysgerminomas, embryonal carcinomas, yolk sac tumors or chorio carcinomas received BEP (Bleomycin 15 mg/m2/days 1-3, Etoposide 100 mg/m2/days 4-8, Cisplatinum 20 mg/m2/days 4-8), followed by VIP (Vinblastine 3 mg/m2/days 1 + 2, Ifosfamide 1500 mg/m2/days 1-5 including Mesna uroprotection and Cisplatinum 20 mg/m2/days 1-5). Patients with ovary tumors of stage 1 were treated with 3 courses of BEP, patients with ovary tumors stage II and extragonadal localisation received 3 courses of VIP in addition to 3 courses of BEP. In cases of extended tumors 4 courses of BEP were followed by delayed resection of tumors and 4 courses of VIP. Patients with intracranial germinomas were treated with 30 Gy of craniospinal radiation therapy and additional 15 Gy as a tumor boost. Since some cases of spinal extension were reported a spinal radiation therapy seems to be indispensable. Patients with intracranial embryonal carcinomas, yolk sac tumors or chorio carcinomas tumors were given 2 courses of BEP and VIP followed by 30 Gy of craniospinal radiation therapy and additional 20 Gy as a tumor boost. Patients with immature teratomas of the ovary grade 1-3 and grade 3 of tumors with extragonadal localisation were treated with 3 courses of BEP after resection of tumors. Until 1. 1. 1991 92 patients were reported to the study--27 with intracranial and 65 with extracranial primary localisation of tumors. 43 patients suffered from teratomas (including 20 immature teratomas grade 1-3), 18 from germinomas (seminomas/dysgerminomas) and 31 from malignant non-seminomatous germ cell tumors. After an observation period of 29 months disease-free survival rate was 80% (79/92 patients, Kaplan-Meier Statistics). Outcome of intracranial tumors was death or relapse in 2/9 patients with malignant non-seminomatous germ cell tumors, in 2/14 patients with intracranial germinomas, in 2/4 patients with teratomas. Patients with extracranial localisation of tumors suffered from death or relapse in 1/21 cases with non-seminomatous tumors, in 0/4 cases with dysgerminomas and 5/39 cases with teratomas. During pilot study one infant with a malignant non-seminomatous germ cell tumor died of a pneumopathia. Therefore infants treated according to the final protocol did not receive Bleomycin.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:[Treatment of non-testicular germ cell tumors in children and adolescents with BEP and VIP: initial results of the MAKEI 89 therapy study]. 171 67


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