bluuebunny/crossref_metadata_2025_split huggingface dataset:
Soft Tissue Leiomyosarcomas and Malignant Gastrointestinal Stromal Tumors: Differences in Clinical Outcome and Expression of Multidrug Resistance Proteins
Authors: Plaat Boudewijn E. C. , Hollema Harry , Molenaar Willemina M. , Broers Gerben H. Torn , Pijpe Justin , Mastik Mirjam F. , Hoekstra Harald J. , van den Berg Eva , Scheper Rik J. , van der Graaf Winette T. A. 
Published: February 2017

PURPOSE: Several studies have reported clinical behavior and chemotherapy resistance in leiomyosarcomas, but these studies did not differentiate between soft tissue leiomyosarcomas (LMS) and malignant gastrointestinal stromal tumors (GIST). Multidrug resistance (MDR) has been associated with the expression of P-glycoprotein (P-gp), multidrug resistance protein (MRP1), and lung resistance protein (LRP). The aim of the present study was to compare LMS and GIST with respect to clinical outcome and MDR parameters. PATIENTS AND METHODS: Clinical outcome was evaluated in 29 patients with a primary deep-seated LMS and 26 patients with a primary malignant GIST. Paraffin-embedded material, available for 26 patients with LMS and 25 with GIST, was used for immunohistochemical detection of P-gp, MRP1, LRP, and c-kit. RESULTS: Mean overall survival (OS) was 72 months for LMS patients and 31 months for GIST patients (P < .05). Metastases occurred in 16 (59%) of 27 assessable LMS patients and in 10 (56%) of 18 assessable GIST patients. LMS predominantly metastasized to the lungs (14 of 16 patients), whereas GIST tended to spread to the liver (five of 10 patients) and the abdominal cavity (three of 10 patients; P < .001). P-gp and MRP1 expression was more pronounced in GIST than in LMS (P < .05): the mean percentage of P-gp expressing cells was 13.4% in patients with LMS and 38.4% in patients with GIST, and the mean percentage MRP1 expressing cells was 13.3% in patients with LMS and 35.4% in patients with GIST. LRP expression did not differ between LMS and GIST. c-kit was expressed in 5% of the LMS patients and in 68% of the GIST patients. CONCLUSION: LMS patients have a better survival than GIST patients, and the metastatic pattern is different. Expression of MDR proteins in LMS is less pronounced than in GIST.
Activation (Tyrosine Phosphorylation) of ErbB-2 (HER-2/neu): A Study of Incidence and Correlation With Outcome in Breast Cancer
Authors: Thor A.D. , Liu S. , Edgerton S. , Moore D. , Kasowitz K.M. , Benz C.C. , Stern D.F. , DiGiovanna M.P. 
Published: February 2017

PURPOSE: We hypothesize that phosphorylated ErbB-2 (P-ErbB-2, identified by a novel antibody PN2A) may provide either more significant or additional prognostic marker data for breast cancer patients. This study was designed to compare the incidence and prognostic value of ErbB-2 (HER-2/neu) and P-ErbB-2 immunoexpression in archival breast cancer samples. MATERIALS AND METHODS: Eight hundred sixteen invasive breast cancers with a median of 16.3 years of follow-up were immunostained for ErbB-2 (using antibody CB11) and P-ErbB-2 (using antibody PN2A). ErbB-2 and P-ErbB-2 data were compared with clinical, histologic, immunohistochemical, and outcome variables. RESULTS: Of 816 primary breast cancers, 307 (38%) were positive for ErbB-2 and 37 (12% of ErbB-2 positive and 5% of the study population) expressed P-ErbB-2. P-ErbB-2 was not detected in ErbB-2–negative cases (n = 509). ErbB-2 immunohistochemical data were bimodal; patients with ≥ 80% cellular expression had the shortest disease-free and disease-specific survival. P-ErbB-2 was associated with a higher percentage of ErbB-2–positive cells, a higher number of positive lymph nodes, and cellular proliferation. ErbB-2 and P-ErbB-2 were indicators of poor prognosis in node-positive patients in both univariate and multivariate analyses. We found that either P-ErbB-2 expression or high (≥ 80%) ErbB-2 expression provided the most significant prognostic value in node-positive cases by multivariate analyses. There were too few P-ErbB-2–positive cases and events in the node-negative patient group to allow statistical analysis of P-ErbB-2 in that subgroup. CONCLUSION: PN2A immunostaining identified a subset (approximately 12% of ErbB-2–positive breast cancers) with activation (phosphorylation) of the receptor ErbB-2. P-ErbB-2 expression was strongly associated with higher levels of ErbB-2 expression (≥ 80%), although it was not a surrogate. Identification of cases with a high percentage of invasive breast cancer cells expressing ErbB-2 or determination of receptor activation via P-ErbB-2 may provide additional prognostic value in node-positive breast cancers.
Phase III Randomized Trial of Amifostine as a Radioprotector in Head and Neck Cancer
Authors: Brizel David M. , Wasserman Todd H. , Henke Michael , Strnad Vratislav , Rudat Volkar , Monnier Alain , Eschwege Francois , Zhang Jay , Russell Lesley , Oster Wolfgang , Sauer Rolf 
Published: February 2017

PURPOSE: Radiotherapy for head and neck cancer causes acute and chronic xerostomia and acute mucositis. Amifositine and its active metabolite, WR-1065, accumulate with high concentrations in the salivary glands. This randomized trial evaluated whether amifostine could ameliorate these side effects without compromising the effectiveness of radiotherapy in these patients. PATIENTS AND METHODS: Patients with previously untreated head and neck squamous cell carcinoma were eligible. Primary end points included the incidence of grade ≥ 2 acute xerostomia, grade ≥ 3 acute mucositis, and grade ≥ 2 late xerostomia and were based on the worst toxicity reported. Amifostine was administered (200 mg/m2 intravenous) daily 15 to 30 minutes before irradiation. Radiotherapy was given once daily (1.8 to 2.0 Gy) to doses of 50 to 70 Gy. Whole saliva production was quantitated preradiotherapy and regularly during follow-up. Patients evaluated their symptoms through a questionnaire during and after treatment. Local-regional control was the primary antitumor efficacy end point. RESULTS: Nausea, vomiting, hypotension, and allergic reactions were the most common side effects. Fifty-three percent of the patients receiving amifostine had at least one episode of nausea and/or vomiting, but it only occurred with 233 (5%) of 4,314 doses. Amifostine reduced grade ≥ 2 acute xerostomia from 78% to 51% (P < .0001) and chronic xerostomia grade ≥ 2 from 57% to 34% (P = .002). Median saliva production was greater with amifostine (0.26 g v 0.10 g, P = .04). Amifostine did not reduce mucositis. With and without amifostine, 2-year local-regional control, disease-free survival, and overall survival were 58% versus 63%, 53% versus 57%, and 71% versus 66%, respectively. CONCLUSION: Amifostine reduced acute and chronic xerostomia. Antitumor treatment efficacy was preserved.
Phase III Comparative Study of High-Dose Cisplatin Versus a Combination of Paclitaxel and Cisplatin in Patients With Advanced Non–Small-Cell Lung Cancer
Authors: Gatzemeier Ulrich , von Pawel Joachim , Gottfried Maya , Velde G.P. M. ten , Mattson Karin , DeMarinis Filipo , Harper Peter , Salvati Franco , Robinet Gilles , Lucenti Antonio , Bogaerts Jan , Gallant Gilles 
Published: February 2017

PURPOSE: New effective chemotherapy is needed to improve the outcome of patients with advanced non–small-cell lung cancer (NSCLC). Paclitaxel administered as a single agent or in combination with cisplatin has been shown to be a potentially new useful agent for the treatment of NSCLC. PATIENTS AND METHODS: Between January 1995 and April 1996, 414 patients with stage IIIB or IV NSCLC were randomized to received either a control arm of high-dose cisplatin (100 mg/m2) or a combination of paclitaxel (175 mg/m2, 3-hour infusion) and cisplatin (80 mg/m2) every 21 days. RESULTS: Compared with the cisplatin-only arm, there was a 9% improvement (95% confidence interval, 0% to 19%) in overall response rate for the paclitaxel/cisplatin arm (17% v 26%, respectively; P = .028). Median time to progression was 2.7 and 4.1 months in the control and paclitaxel/cisplatin arm, respectively (P = .026). The study, however, failed to show a significant improvement in median survival for the paclitaxel/cisplatin arm (8.6 months in the control arm v 8.1 months in the paclitaxel/cisplatin arm, P = .862). There was more hematotoxicity, peripheral neuropathy, and arthralgia/myalgia on the paclitaxel/cisplatin arm, whereas the high-dose cisplatin arm produced more ototoxicity, nausea, vomiting, and nephrotoxicity. Quality of life (QOL) was similar overall between the two arms. CONCLUSION: This large randomized phase III trial failed to show a significant improvement in survival for the paclitaxel/cisplatin combination compared with high-dose cisplatin in patients with advanced NSCLC. However, the paclitaxel/cisplatin combination did produce a better clinical response, resulting in an increased time to progression while providing a similar QOL.
Contribution of Dexamethasone to Control of Chemotherapy-Induced Nausea and Vomiting: A Meta-Analysis of Randomized Evidence
Authors: Ioannidis John P. A. , Hesketh Paul J. , Lau Joseph 
Published: February 2017

PURPOSE: To synthesize the available randomized evidence on the efficacy of dexamethasone when used for protection against acute and delayed nausea and vomiting in patients receiving highly or moderately emetogenic cancer chemotherapy. MATERIALS AND METHODS: A meta-analysis was performed using trials identified through MEDLINE (1966 to April 1999), Embase, Derwent Drug File, and the Cochrane Library’s Database of Controlled Trials. Data on acute and delayed emesis and nausea were collected. All randomized studies comparing dexamethasone to placebo, no treatment, or other antiemetics qualified, including cross-over trials providing first-cycle data. RESULTS: Of 1,200 citations screened, 32 studies with 42 pertinent comparisons and 5,613 patients were included in the meta-analysis. Dexamethasone was superior to placebo or no treatment for complete protection from acute emesis (odds ratio, 2.22; 95% confidence interval [CI], 1.89 to 2.60) and for complete protection from delayed emesis (odds ratio, 2.04; 95% CI, 1.63 to 2.56). The results were similar for complete protection from nausea. The pooled risk difference for complete protection from emesis was 16% for both the acute and delayed phases (95% CI, 13% to 19% and 11% to 20%, respectively). The beneficial effect was similar in subgroups defined by various study design parameters. No trial addressed the efficacy of dexamethasone in the delayed phase without having administered dexamethasone for acute-phase protection as well. CONCLUSION: Dexamethasone is clearly effective in protecting from emesis both in the acute and delayed phases, with emesis avoided in one patient out of six treated. Future trials should determine whether the delayed-phase effect is independent of the acute-phase benefit.
Enhancement of Fluorouracil Uptake in Human Colorectal and Gastric Cancers by Interferon or by High-Dose Methotrexate: An In Vivo Human Study Using Noninvasive 19F-Magnetic Resonance Spectroscopy
Authors: Presant Cary A. , Wolf Walter , Waluch Victor , Wiseman Charles L. , Weitz Ilene , Shani Jashovam 
Published: February 2017

PURPOSE: To study whether two modulators, high-dose methotrexate (MTX) and interferon alfa-2a (IFNα-2a) will alter the intratumoral pharmacokinetics of fluorouracil (5-FU). PATIENTS AND METHODS: Five patients, two with gastric cancer and three with colorectal cancer, who had metastatic tumor nodules in their livers were studied dynamically in vivo after 5-FU injection. In a magnetic resonance imaging unit, noninvasive 19F-magnetic resonance spectroscopy (MRS) was used to detect 19F signals from 5-FU and its metabolites. RESULTS: The intratumoral half-life (t1/2) of 5-FU in these tumors ranged from 18.8 minutes to 42.3 minutes. Four of the five patients exhibited increases in the t1/2 of 5-FU after intravenous (IV) administration of MTX or IFNα-2a. In the two patients with gastric cancer who received IV high-dose MTX followed by IV 5-FU, increases were seen in either the total t1/2 of 5-FU (41.8%) or in the t1/2 of the α phase (150%). In the three patients with colorectal cancer who received IV IFNα-2a followed by IV 5-FU, the two patients with partial responses had increases in the t1/2 of 5-FU of 41% and 30.2%, whereas the nonresponder had a nonsignificant increase (5.6%) in the t1/2 of 5-FU. CONCLUSIONS: These results document that the in vivo modulation of the tumoral pharmacokinetics of 5-FU can be measured noninvasively by 19F-MRS and suggest that such information correlates with subsequent clinical outcomes. The findings also indicate that IFNα-2a and high-dose MTX can increase the intratumoral 5-FU in some patients. Such information, obtained prospectively in vivo, may assist in better individual cancer patient management and in developing novel drug combinations.
HER-2/neu Amplification in Benign Breast Disease and the Risk of Subsequent Breast Cancer
Authors: Stark Azadeh , Hulka Barbara S. , Joens Scott , Novotny Debra , Thor Ann D. , Wold Lester E. , Schell Michael J. , Melton L. Joseph , Liu Edison T. , Conway Kathleen 
Published: February 2017

PURPOSE: The purpose of this study was to determine whether the presence of HER-2/neu gene amplification and/or overexpression in benign breast disease was associated with an increased risk of subsequent breast cancer. PATIENTS AND METHODS: We conducted a nested case-control study of a cohort of women who were diagnosed with benign breast disease at the Mayo Clinic and who were subsequently observed for the development of breast cancer. Patients who developed breast cancer formed the case group, and a matched sample from the remaining cohort served as controls. Benign tissue samples from 137 cases and 156 controls and malignant tissues from 99 cases provided DNA or tissue for evaluation of HER-2/neu amplification and protein overexpression. RESULTS: Among the controls, seven benign tissues (4.5%) demonstrated low-level HER-2/neu amplification, whereas 13 benign (9.5%) and 18 malignant (18%) tissue specimens from cases exhibited amplification. HER-2/neu amplification in benign breast biopsies was associated with an increased risk of breast cancer (odds ratio [OR] = 2.2; 95% confidence interval [CI], 0.9 to 5.8); this association approached statistical significance. The risks for breast cancer associated with benign breast histopathologic diagnoses were OR = 1.1 (95% CI, 0.6 to 1.9) for lesions exhibiting proliferation without atypia and OR = 1.5 (95% CI, 0.4 to 5.6) for the diagnosis of atypical ductal hyperplasia. For women having both HER-2/neu amplification and a proliferative histopathologic diagnosis (either typical or atypical), the risk of breast cancer was more than seven-fold (OR = 7.2; 95% CI, 0.9 to 60.8). Overexpression of the HER-2/neu protein product, defined as membrane staining in 10% or more of epithelial cells, was found in 30% of the breast tumors but was not detected in any of the benign breast tissues. Case patients who had HER-2/neu gene amplification in their malignant tumor were more likely to have had HER-2/neu amplification in their prior benign biopsy (P = .06, Fisher’s exact test). CONCLUSION: Women with benign breast biopsies demonstrating both HER-2/neu amplification and a proliferative histopathologic diagnosis may be at substantially increased risk for subsequent breast cancer.
Pilot Trial of the Safety, Tolerability, and Retinoid Levels of N-(4-hydroxyphenyl) Retinamide in Combination With Tamoxifen in Patients at High Risk for Developing Invasive Breast Cancer
Authors: Conley Barbara , O’Shaughnessy Joyce , Prindiville Sheila , Lawrence Julia , Chow Catherine , Jones Elizabeth , Merino Maria J. , Kaiser-Kupfer Muriel I. , Caruso Rafael C. , Podgor Marvin , Goldspiel Barry , Venzon David , Danforth David , Wu Suhlan , Noone Marianne , Goldstein Jennifer , Cowan Kenneth H. , Zujewski JoAnne 
Published: February 2017

PURPOSE: N-(4-hydroxyphenyl) retinamide ([4-HPR], Fenretinide; R.W. Johnson Pharmaceutical Research Institute, Springhouse, PA) and tamoxifen (TAM) have synergistic antitumor and chemopreventive activity against mammary cancer in preclinical studies. We performed a pilot study of this combination in women at high risk for developing breast cancer.PATIENTS AND METHODS: Thirty-two women were treated with four cycles of 4-HPR, 200 mg orally (PO) for 25 days of each 28-day cycle, and TAM, 20 mg PO once daily for 23 months beginning after 1 month of 4-HPR alone. Tolerability, dark adaptometry, tissue biopsies, and retinoid plasma concentrations (Cp) were evaluated.RESULTS: Symptomatic reversible nyctalopia developed in two patients (6%) on 4-HPR, but 16 (73%) of 22 patients had reversible changes in dark adaptation, which correlated with relative decrease in Cp retinol (P ≤ .01). Four patients stopped treatment for side effects, and 84% of patients had hot flashes. Other commonly reported (grade ≤ 2) reversible toxicities included skin and ocular dryness, fatigue, and mood changes. Serum high-density lipoprotein increased and cholesterol decreased from baseline to month 4. Baseline mean ± SD Cp retinol was 708 ± 280 ng/mL. Mean ± SD Cp of 4-HPR, N-(4-methoxyphenyl) retinamide (4-MPR), and retinol after 1 month of 4-HPR were 0.34 ± 0.21 μmol/L, 0.28 ± 0.21 μmol/L, and 282 ± 127 ng/mL, respectively. Mean retinoid Cps did not change after 3 months of 4-HPR + TAM.CONCLUSIONS: TAM administration did not affect Cp 4-HPR or 4-MPR. Reversible nyctalopia correlated with relative decrease in Cp retinol but was not symptomatic for most patients. TAM + 4-HPR has acceptable tolerability for this high-risk cohort.
Treatment of Primary Progressive Hodgkin’s and Aggressive Non-Hodgkin’s Lymphoma: Is There a Chance for Cure?
Authors: Josting Andreas , Reiser Marcel , Rueffer Ulrich , Salzberger Bernd , Diehl Volker , Engert Andreas 
Published: February 2017

PURPOSE: To determine differences in prognosis between primary progressive Hodgkin’s disease (HD) and aggressive non-Hodgkin’s lymphoma (NHL), we retrospectively analyzed patients with progressive lymphoma who were treated with different salvage chemotherapy regimens including high-dose chemotherapy (HDCT) followed by autologous stem-cell support (ASCT). PATIENTS AND METHODS: One hundred thirty-one patients with primary progressive lymphoma (HD, n = 67; NHL, n = 64) were enrolled. Primary progressive disease was defined as disease progression during first-line chemotherapy or only transient response (complete or partial response lasting ≤ 90 days) after induction treatment. Patients 60 years or younger with progressive lymphoma were eligible to receive HDCT with ASCT. RESULTS: The overall response rate after salvage chemotherapy for patients with primary progressive HD and NHL was 33% and 15%, respectively. Twenty-five HD patients (37%) received HDCT. Most patients with NHL had progressive disease under salvage treatment, with only six patients (10%) receiving HDCT. Of those, only two patients were alive and in continuous complete remission 3 and 12 months after HDCT. No patient with NHL survived longer than 26 months after first diagnosis. Actuarial OS after 5 years was 19% for all HD patients; 53% for HD patients receiving HDCT, and 0% for patients who did not receive HDCT. In HD patients, multivariate regression analysis identified chemosensitive disease on salvage treatment (P = .0001) and HDCT (P = .031) as significant prognostic factors for freedom from treatment failure. Significant prognostic factors for OS are chemosensitive disease (P = .0005), HDCT (P = .039), and B symptoms at the time of progress (P = .046). CONCLUSION: There are striking differences in the prognosis of patients with progressive HD and aggressive NHL. The prognosis of progressive NHL patients is dismal. Most patients have rapidly progressive disease after salvage treatment and are, therefore, excluded from HDCT programs. In contrast, progressive HD patients can achieve long-term survival after HDCT.
Comparison of Preparative Regimens in Transplants for Children With Acute Lymphoblastic Leukemia
Authors: Davies Stella M. , Ramsay Norma K. C. , Klein John P. , Weisdorf Daniel J. , Bolwell Brian , Cahn Jean-Yves , Camitta Bruce M. , Gale Robert Peter , Giralt Sergio , Heilmann Carsten , Henslee-Downey P. Jean , Herzig Roger H. , Hutchinson Raymond , Keating Armand , Lazarus Hillard M. , Milone Gustavo A. , Neudorf Steven , Perez Waleska S. , Powles Ray L. , Prentice H. Grant , Schiller Gary , Socié Gérard , Vowels Marcus , Wiley Joseph , Yeager Andrew , Horowitz Mary M. 
Published: February 2017

PURPOSE: Preparative regimens involving total-body irradiation (TBI) produce significant late toxicities in some children who receive bone marrow transplants, including impaired growth and intellectual development. Busulfan is often used as an alternative to TBI, but there are few data regarding its relative efficacy. PATIENTS AND METHODS: We compared outcomes of HLA-identical sibling transplants for acute lymphoblastic leukemia (ALL) in children (< 20 years of age) who received cyclophosphamide plus TBI (CY/TBI) (n = 451) versus those who received busulfan plus cyclophosphamide (Bu/CY) (n = 176) for pretransplant conditioning. Patients received transplants between 1988 and 1995 and their results were reported to the International Bone Marrow Transplant Registry by 144 participating institutions. The CY/TBI and Bu/CY groups did not differ in gender, immune phenotype, leukocyte count at the time of diagnosis, chromosome abnormalities, remission status, or length of initial remission. T-cell depletion was used more frequently in the CY/TBI group; the Bu/CY group included a higher proportion of children who were less than 5 years of age. The median follow-up period was 37 months. RESULTS: The 3-year probabilities of survival were 55% (95% confidence interval [CI], 50% to 60%) with TBI/CY and 40% (95% CI, 32% to 48%) with Bu/CY (univariate P = .003). The 3-year probabilities of leukemia-free survival were 50% (95% CI, 45% to 55%) and 35% (95% CI, 28% to 43%), respectively (univariate P = .005). In a multivariate analysis, the risks of relapse were similar in the two groups (relative risk [RR], 1.30 for Bu/CY v CY/TBI; P = .1). Treatment-related mortality was higher in the Bu/CY group (RR, 1.68; P = .012). Death and treatment failure (relapse or death, inverse of leukemia-free survival) were more frequent in the Bu/CY group (RR, 1.39; P = .017 for death; RR, 1.42; P = .006 for treatment failure). CONCLUSION: These data indicate superior survival with CY/TBI conditioning, compared with Bu/CY conditioning, for HLA-identical sibling bone marrow transplants in children with ALL.