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We performed a phase II study to evaluate the activity and toxicity of the combination of paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton, NJ) and carboplatin as first-line treatment in patients with recurrent or metastatic head and neck cancer. From March 1994 until August 1996, 49 patients were treated with paclitaxel 200 mg/m2 by 3-hour infusion followed by carboplatin at an area under the concentration-time curve of 7 mg/mL x min; treatment was requested every 4 weeks. Granulocyte colony-stimulating factor was administered prophylactically on days 2 to 12 of each cycle. The study included 41 men and eight women, with a median age of 57 years (range, 23 to 73 years). Most of the patients were symptomatic and had locoregional disease. Primary sites included nasopharynx (14 patients), oropharynx (six), oral cavity (four), hypopharynx (three), larynx (20), paranasal sinuses (one), and unknown (one). After the completion of treatment, four patients (8%; 95% confidence interval, 0% to 16%) achieved a complete response and 12 (24%; 95% confidence interval, 12% to 37%) achieved a partial response. Grade 3/4 toxicities included anemia (2%) and leukopenia, thrombocytopenia, nausea/vomiting, diarrhea, and stomatitis (4% each). After a median follow-up of 15.3 months, median time to progression was 5.7 months (range, 0.5 to 29.8+ months) and median survival was 13.3 months (range, 0.5 to 30.2+ months). In our ongoing study in a similar patient population, gemcitabine was substituted for carboplatin.
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PMID:Paclitaxel in combination with carboplatin or gemcitabine for the treatment of advanced head and neck cancer. 942 62

Eighteen patients with esophageal carcinoma (16 adenocarcinoma, two squamous cell carcinoma) were treated with two cycles of induction chemotherapy consisting of paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton, NJ) 175 mg/m2 (3-hour infusion), cisplatin 20 mg/m2/d x 4 days, and 5-fluorouracil 1 g/m2/d (continuous infusion x 4 days) separated by a 28-day interval before surgical resection. After resection, patients received two more cycles of the same regimen. A thorough staging evaluation was performed before patients were enrolled in the study. The salient chemotherapy toxicities included grade 3 nausea (two patients), grade 3 vomiting (two patients), grades 3 and 4 diarrhea (one patient each), and grades 3 and 4 neutropenia (two and 10 patients, respectively). No deaths occurred due to toxicity. Surgical resection was attempted in all 18 patients (100%) after two cycles of induction chemotherapy. Esophageal resection was successfully completed in 17 patients. Liver metastases were noted at laparotomy in the one patient who subsequently did not undergo esophageal resection. Surgical complications were minor, and no postoperative deaths occurred. Fifteen patients received two additional cycles of the paclitaxel/5-fluorouracil/cisplatin regimen postoperatively, two received only one cycle, and one refused further therapy. Of 15 patients alive, 14 show no evidence of disease. The 1-year actuarial survival rate of this group of patients is 82%. In conclusion, the paclitaxel/5-fluorouracil/cisplatin combination is well tolerated and is an active regimen in esophageal carcinoma.
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PMID:Efficacy of cisplatin, 5-fluorouracil, and paclitaxel regimen for carcinoma of the esophagus. 942 75

The current phase II study evaluates the safety and efficacy of paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton, NJ) and 5-fluorouracil (5-FU) plus folinic acid in patients with advanced gastric cancer. Paclitaxel 175 mg/m2 was given intravenously over 3 hours on days 1 and 22; folinic acid 500 mg/m2 given intravenously over 2 hours followed by 5-FU 2,000 mg/m2 given intravenously over 24 hours was administered on days 1, 8, 15, 22, 29, and 36. Six weeks of treatment were considered one cycle, and each cycle was followed by 2 weeks off treatment. Twenty-two patients (six women and 16 men) with advanced/metastatic gastric cancer were entered on trial. All patients are evaluable for response and toxicity. None had received prior chemotherapy. Radiologically metastatic sites included gastric lymph nodes (64%), liver (36%), lungs (18%), peritoneum (18%), bone (9%), and skin (5%). No complete responses were observed. Seven patients (32%; 95% confidence interval, 12% to 52%) had a partial response. Sites of partial responses included the lungs, skin, lymph nodes, and locally advanced tumor. Twelve patients (55%) had stable disease and three (14%) had disease progression. At a median follow-up of 12 months (range, 1 to 17+ months), the median overall survival for all patients was 11 months (range, 1 to 17+ months; 95% confidence interval, 6.8 to 18.2) and the median progression-free interval was 8 months (range, 1 to 13+ months; 95% confidence interval, 4.7 to 9.8). Severe nonhematologic toxicities were alopecia (45%), fever/infection (9%), diarrhea (5%), and nausea/vomiting (5%). Grade 3/4 neutropenia occurred in three patients (14%). In summary, paclitaxel given every 3 weeks in combination with once-weekly, 24-hour continuous infusions of 5-FU/folinic acid is active in advanced gastric cancer and appears to achieve response rates comparable to regimens like etoposide/folinic acid/5-FU or 5-FU/doxorubicin/methotrexate. The toxicity of this new combination is moderate and allows treatment in an outpatient setting. Ongoing studies are evaluating the activity of paclitaxel combined with weekly continuous infusions of 5-FU/folinic acid with or without cisplatin.
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PMID:Paclitaxel and weekly 24-hour infusion of 5-fluorouracil/folinic acid in advanced gastric cancer. 942 77

In a phase II study, 66 patients with advanced breast cancer (median age 56 years; range, 28 to 75 years) were treated with paclitaxel (Taxol), 175 mg/m2 infused over 3 hours, and carboplatin (Paraplatin), dosed to attain an area under the concentration-time curve (AUC) of 6 mg x min/mL; treatment was repeated every 3 weeks. A total of 38 (58%) patients had received prior adjuvant chemotherapy, 21 with a regimen containing an anthracycline or mitoxantrone (Novantrone). As of May 1997, 295 cycles of paclitaxel-carboplatin have been administered, 248 (84%) at full dose. The relative dose intensity of paclitaxel is 0.9 (range, 0.5 to 1.2). Of the 66 patients, 8 (12%) have achieved a complete response and 27 (41%) a partial response, for a total response rate of 53%. Grade 3 to 4 toxicities have included anemia (5%), leukopenia (25%), thrombocytopenia (5%), nausea/vomiting (7%), myalgias/arthralgias (4%), allergic reaction, neurotoxicity, and infection (2% each). Alopecia has been universal. Median time to progression is 8.9 months; median survival has not yet been reached. We conclude that the combination of paclitaxel and carboplatin has significant activity in advanced breast cancer and can easily be administered on an outpatient basis with manageable toxicity.
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PMID:Paclitaxel and carboplatin as first-line chemotherapy for advanced breast cancer. 951 4

An effective local-regional therapy is needed for adenocarcinomas of the pancreas. Paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton NJ) may enhance the effect of radiation therapy. Paclitaxel synchronizes cells at G2/M, a relatively radiosensitive phase of the cell cycle. We have shown that response to paclitaxel and concurrent radiation (paclitaxel/RT) was not affected by p53 mutations in non-small cell lung cancer (NSCLC). This suggested that paclitaxel/RT was a rationale treatment approach for other malignancies which frequently harbor p53 mutations such as upper gastrointestinal malignancies. We have completed a phase I study of paclitaxel/RT for locally advanced pancreatic and gastric cancers. The maximum tolerated dose (MTD) of paclitaxel was 50 mg/m2/week for 6 weeks with abdominal radiation. The dose limiting toxicities were abdominal pain within the radiation field, nausea and anorexia. Twenty-five patients with locally advanced pancreatic cancer have now completed treatment at the phase II dose level of paclitaxel 50 mg/m2/week with 50 Gy concurrent RT. Thus far, the only grade 3/4 toxicities have been hypersensitivity reactions in 2 patients, asymptomatic grade 4 neutropenia in 3 patients, and non-neutropenic biliary sepsis in 1 patient. Of the first 22 assessable patients treated at the phase II study, 8 obtained a partial response (PR) for a preliminary response rate of 36%. These findings demonstrate that paclitaxel/RT is well tolerated with substantial activity for locally advanced pancreatic cancer.
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PMID:Paclitaxel and concurrent radiation for locally advanced pancreatic carcinoma. 979 3

An effective locoregional therapy is needed for adenocarcinomas of the pancreas, stomach, and gastroesophageal junction. Paclitaxel (Taxol; Bristol-Myers Squibb Company, Princeton, NJ) may enhance the effect of radiation therapy (RT). Paclitaxel synchronizes cells at G2/M, a relatively radiosensitive phase of the cell cycle. We have shown that response to paclitaxel and concurrent RT (paclitaxel/RT) was not affected by p53 mutations in non-small cell lung cancer. This finding suggested that paclitaxel/RT was a rational treatment approach for other malignancies that frequently harbor p53 mutations, such as upper gastrointestinal malignancies. We completed a phase I study of paclitaxel/RT for locally advanced pancreatic and gastric cancer. The maximum tolerated dose of paclitaxel was 50 mg/m2/wk for 6 weeks with abdominal RT. The dose-limiting toxicities were abdominal pain within the radiation field, nausea, and anorexia. Phase II studies are now under way. Twenty-five patients with locally advanced pancreatic cancer have been entered at the phase II dose level of paclitaxel 50 mg/m2/wk with concurrent RT (total dose, 50 Gy). Thus far, the only grade 3/4 toxicities have been hypersensitivity reactions (n = 2), asymptomatic grade 4 neutropenia (n = 3), and nonneutropenic biliary sepsis (n = 1). Of the first 18 assessable patients with pancreatic cancer treated on the phase II study, six obtained a partial response, for a preliminary response rate of 33%. In the phase II study for locally advanced gastric cancer, 20 patients have been enrolled. Of the first 19 patients who have completed treatment, nine (47%) had grade 3/4 toxicities, including nausea, anorexia, esophagitis, and gastritis. Of the first 16 patients with gastric cancer, complete and partial responses have been observed in one and eight patients, respectively, for a preliminary response rate of 56%. We have also completed treatment on 24 patients with potentially resectable adenocarcinomas of the gastroesophageal junction with neoadjuvant paclitaxel 60 mg/m2 and cisplatin 25 mg/m2, weekly for 4 weeks, with concurrent RT (total dose, 40 Gy) followed by surgical resection. Ten patients (41%) had grade 3/4 toxicities, including neutropenia, nausea, and dehydration. Of 24 patients, four complete responses (17%) and 14 partial responses (58%) were observed, for an overall response rate of 75%. Severe esophagitis was uncommon, making this a well-tolerated outpatient regimen for adenocarcinomas of the distal esophagus. These findings demonstrate that paclitaxel-based chemoradiation for locally advanced upper gastrointestinal malignancies is well-tolerated with substantial activity.
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PMID:Paclitaxel and concurrent radiation therapy for locally advanced adenocarcinomas of the pancreas, stomach, and gastroesophageal junction. 1021 May 40

CBT-1, a natural product, was studied as an MDR modulator with Taxol (135 mg/m2) in an escalating dose Phase I clinical trial. CBT-1 was administered orally at doses from 300 mg/m2 to 500 mg/m2 daily x 7. The MTD was determined to be 500 mg/m2 with moderate nausea and occasional emesis. Side effects were mainly attributable to Taxol rather than the study drug. A total of 18 patients were registered on study with only one patient determined to be intolerant of CBT-1 due to nausea and emesis. In this Phase I study four patients (3 breast, 1 NSCLC) remained stable for greater than two cycles of treatment. No complete or partial responses were seen in this Taxol resistant population of patients with advanced cancer.
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PMID:Phase I study of CBT-1 and Taxol in patients with Taxol resistant cancers. 1080 20

It was reported at the 1995 Second National Retrovirus Conference that AIDS has now surpassed unintentional injury as the leading cause of death for male Americans between the ages of 25 to 44, and for women, AIDS is fourth behind unintentional injury. A study of multidrug resistant tuberculosis that showed improved survival rates as long as appropriate therapy began within four weeks of diagnosis was also presented. The current recommendation is to consider the PPD skin test positive in persons with HIV if the bump that appears is over five millimeters in diameter. A new ganciclovir implant study demonstrated the implant's effectiveness in preventing CMV disease progression with low rates of complications, suggesting implants should probably replace intravenous ganciclovir as maintenance therapy. Another study demonstrated the effectiveness of cidofovir as a treatment for CMV infection, indicating that cidofovir was appropriate as a salvage therapy for those failing ganciclovir and foscarnet. In vitro studies involving Taxol and Kaposi's sarcoma (KS) show partial responses (55 percent), and some disease stabilization (40 percent). Four of five patients with pulmonary KS responded with clearance of tumor lesions. The first randomized trial involving Loviride with zidovudine has shown a sustained increase in CD4 cells with headache, nausea, and diarrhea as the most common side effects. Preliminary assessments reveal a reduction in viral load using the combination as opposed to monotherapy. Additional Loviride combination trials are being planned in Europe.
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PMID:Second National Retrovirus conference: a further report. 1136 59

Treatment for cancer has been indicated to negatively impact the quality of life for patients. Specifically, chemotherapy has been associated with fatigue, nausea, and peripheral neuropathy. More recently, chemotherapy has been found to be related to cognitive impairment in various domains including working memory, information processing speed, and visual attention. At this time, the mechanisms underlying cognitive impairment are not understood, and there is currently no treatment for this condition. The purpose of this study was to examine the development of chemotherapy-induced cognitive impairments and symptoms of peripheral neuropathy. While receiving the chemotherapeutic agent Taxol, animals were tested daily in the Five Choice Serial Reaction Time Task (5CSRTT), a task which requires animals to respond to a visually presented stimulus in order to obtain reinforcement. In addition, animals were tested for the development of peripheral neuropathy, measured by changes in sensitivity to mechanical stimulation. The results indicate Taxol treated animals developed mechanical sensitivity within 24h after the first injection of chemotherapy. However, relative to control animals, Taxol treated animals did not exhibit alterations in cognitive function in the 5CSRTT. These differential findings may provide interesting insight into the mechanisms underlying chemotherapy-related cognitive impairment.
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PMID:Differential effects of paclitaxel treatment on cognitive functioning and mechanical sensitivity. 1942 28


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