Publications by authors named "Krigel R"

Introduction: Standard therapy for recurrent or metastatic renal carcinoma includes the biologic response modifiers interferon-alpha (IFN-alpha) and interleukin-2 (IL-2). The response rate for both agents is modest and toxicity is significant. New agents are needed.

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Per protocol, patients with primary CNS non-Hodgkin's lymphoma in an intergroup phase II trial conducted by the North Central Cancer Treatment Group and the Eastern Cooperative Oncology Group had their cognitive functions measured using the Folstein and Folstein Mini-Mental Status Examination (MMSE) and their physical functions measured using the Eastern Cooperative Oncology Group Performance Score (PS) at study entry, at each treatment evaluation, and at quarterly intervals thereafter until disease progression or death. Of the 53 eligible participants who began therapy, 46 (87%) had baseline MMSE scores recorded, 36 (68%) had at least one follow-up MMSE, and 32 (60%) had both, while 52 (98%) had baseline PS, 49 (92%) had at least one follow-up PS, and 48 (91%) had both. Patterns of MMSE and PS values over time were studied in each individual, in the group as a whole, in the 20 patients who completed the study regimen, in the 23 who survived more than a year, and in patients who were classified as nonprogressors at each key evaluation.

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Interleukin-2 (IL-2) and beta-interferon (beta-IFN) are biologic agents with antitumor activity observed in preclinical models. Some studies of patients with advanced non-small cell lung cancer treated with IL-2 report relatively long survival, despite low response rates. Seventy-six evaluable patients with stage IV non-small cell lung cancer were treated in a randomized Phase II study with either IL-2 alone or IL-2 plus beta-IFN.

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Purpose: We herein report updated survival and toxicity data on the entire cohort of 53 eligible patients treated on North Central Cancer Treatment Group (NCCTG) protocol 86-72-52, which is now closed.

Methods And Materials: An initial report was published in this journal in 1995. No substantive changes in the conclusions of that report were identified in this analysis.

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Purpose: Results of multiple radiation, chemotherapy, and combined treatment trials have shown that the fate of primary central nervous system lymphoma (PCNSL) patients is very different from that of patients with similarly treated systemic IE non-Hodgkin's lymphoma. This study was designed to improve the survival of PCNSL patients by the use of combined initial therapy.

Methods And Materials: Forty-six eligible primary PCNSL patients were treated with whole brain irradiation and adjuvant chemotherapy consisting of preirradiation cyclophosphamide-adriamycin-vincristine-prednisone (CHOP) and postirradiation high-dose cytosine arabinoside (HDAC) as part of an ongoing Phase II Mayo/North Central Cancer Treatment Group/Eastern Cooperative Oncology Group (M/NCCTG/ECOG) intergroup effort, which opened in April 1986.

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Development of biological and clinical uses of in vivo 31P magnetic resonance spectroscopy has been hampered by poor anatomic localization of spectra and poor resolution of overlapping signals within phosphomonoester and phosphodiester regions of the spectrum. We applied 1H-decoupling and nuclear Overhauser enhancement to improve resolution of 31P magnetic resonance spectra accurately localized to 21 non-Hodgkin's lymphomas (NHL) by using three-dimensional chemical shift imaging. All 21 spectra had large phosphomonoester signals (26% of total phosphorus) that contained high amounts of phosphoethanolamine relative to phosphocholine.

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The purposes of this study were to determine the maximally tolerated dose (MTD) of IL-2 when sequentially administered following TNF (at its MTD), to identify any unique toxicities, and determine the immunomodulatory effects of this combination. Patients with metastatic cancer were treated with 160 micrograms/ml rTNF by rapid i.v.

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Background: Biologic response modifiers have activity in renal cell carcinoma. The combination of interleukin-2 (IL-2) and beta-interferon (B-IFN) is synergistic in vitro. This trial was initiated to determine the efficacy of IL-2 alone and with B-IFN in advanced RCC.

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Whereas non-small cell lung cancer (NSCLC) comprises 80% of all lung cancer cases, effective prolongation of survival in NSCLC patients using currently available combination chemotherapy has been problematic. Use of dose-intensive chemotherapy along with hematopoietic growth factor support is an attractive, albeit experimental, alternative. We have conducted a phase I study to determine the maximum tolerated dose of etoposide in the ifosfamide/carboplatin/etoposide (ICE) regimen when used with granulocyte-macrophage colony-stimulating factor (GM-CSF) support.

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Purpose: A phase I trial was performed to evaluate the feasibility of escalating the dose of etoposide in dose-intensive ifosfamide, carboplatin, and etoposide (ICE) with granulocyte-macrophage colony-stimulating factor (GM-CSF).

Patients And Methods: Twenty-four patients were entered between November 1990 and November 1991. Patients received ifosfamide 5 g/m2 by continuous infusion over 48 hours, carboplatin 400 mg/m2 by intravenous bolus, and GM-CSF 5 micrograms/kg/d subcutaneously from day 4 until neutrophil recovery.

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Purpose: Estramustine phosphate (EMP) and vinblastine are two microtubule inhibitors with distinct molecular targets and at least additive antimicrotubule effects in vitro. Their modest single-agent activities in hormone-refractory prostate cancer, nonoverlapping toxicities, and lack of cross-resistance prompted a phase II trial in hormone-refractory prostate cancer.

Patients And Methods: Thirty-six assessable patients at the Fox Chase Cancer Center and seven Fox Chase Cancer Center Network institutions were treated with oral EMP 600 mg/m2 on days 1 to 42 and vinblastine 4 mg/m2 intravenously (IV) once a week for 6 weeks.

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The first reported case of an isolated metastasis to the larynx from a regionally localized renal cell carcinoma presenting clinically as hoarseness is discussed. Aggressive management and outcome are presented.

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The administration of recombinant interleukin-2 as an i.v. bolus at dose levels of from 1 to 30 MIU/m2 to patients with cancer induces easily measurable serum interferon-gamma levels of 1 to 500 U/ml.

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This Phase I study was designed to establish the maximum tolerated dose (MTD) of WR-2721 when given twice weekly with total body irradiation (TBI) in the treatment of patients with advanced refractory lymphoid malignancies and to define the toxicities of this combination and schedule. Patients eligible for this study had advanced recurrent indolent non-Hodgkin's lymphoma (NHL) or chronic lymphocytic leukemia (CLL). Patients had symptomatic or progressive disease, a performance status of 0, 1, or 2, and adequate bone marrow, hepatic, and renal function.

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Recombinant interleukin 2 (IL-2) is a potent inducer of lymphokine-activated killer (LAK) activity directed against autologous and allogeneic tumors; these effects are mediated by CD3-negative, CD56-positive, and CD16-positive lymphocytes. Although IL-2 therapy has been associated with clinical responses, particularly in patients with renal cell carcinoma and melanoma, these responses have occurred with high, toxic doses of this cytokine. Since gamma-interferon (IFN-gamma) potentiates LAK activity in vitro and in animal models, we initiated a dose-escalating Phase I trial of IFN-gamma and IL-2 in patients with advanced cancer.

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The cardiovascular, renal, pulmonary, and dermatologic toxicities of interleukin-2 (IL-2) and gamma-interferon (IFN) are well described. However, autoimmune toxicities have only recently been noticed. The authors report the development of warm autoantibodies against erythrocytes in a patient receiving IL-2 (3.

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No significant impact of available treatments on survival among patients with epidemic KS has been demonstrated. Therefore, antitumor therapy now should be considered palliative. In the early stages of the disease, systemic treatment may not be needed, whereas advanced disease requires systemic treatment with one or more agents known to have antitumor activity.

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Preclinical data have demonstrated synergy between interleukin-2 (IL-2) and beta-interferon (IFN-beta) in stimulating natural-killer (NK) cell activity and in increasing expression of IL-2 receptors. Based on results of a phase I trial, a combination of IL-2 and IFN-beta was administered three times weekly by intravenous (IV) bolus injection with 5 x 10(6) Cetus U/m2 of IL-2 and 6 x 10(6) U/m2 of IFN-beta to 24 patients with advanced renal cell carcinoma (RCC). Of 22 assessable patients there were six (27%) objective responses including one complete remission (CR) and five partial responses (PRs).

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Epidemic Kaposi's sarcoma (EKS) is the most common neoplastic manifestation of acquired immune deficiency syndrome (AIDS). The underlying immune deficiency can be partially reversed in vitro with interleukin-2 (IL-2). The type 1 interferons (IFN), alpha and beta, inhibit the growth of the etiologic agent of AIDS, the human immunodeficiency virus, have antitumor activity against Kaposi's sarcoma, and are synergistic with IL-2 in stimulating natural killer cell activity.

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Two hundred twelve patients with acquired immune deficiency syndrome (AIDS)-related Kaposi's sarcoma (KS) were followed prospectively. Univariate and multivariate analyses were performed to determine significant predictors of survival and development of opportunistic infection (OI) from the time of diagnosis of KS. Clinical variables analyzed were age at onset, presence of systemic symptoms, prior or coexistent OI, development of OI greater than 3 months following KS diagnosis, and extent of disease.

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A prospective clinical trial of concomitant interferon-alpha 2b and etoposide was conducted in 24 previously untreated patients with epidemic Kaposi's sarcoma. Eight of 21 evaluable patients (38%) achieved either a complete response (1 patient) or a partial response (7 patients). None of the responders had a prior history of opportunistic infection.

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Interleukin 2 (IL-2) therapies have antitumor activities against several neoplasms. In vitro these activities are enhanced by beta-interferon (IFN-beta). Therefore, we initiated a Phase I trial with a combination of IL-2 and IFN-beta three times weekly.

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