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1.
Rev Neurol ; 70(2): 67-71, 2020 Jan 16.
Article in Spanish | MEDLINE | ID: mdl-31930472

ABSTRACT

INTRODUCTION: Hallucinations are one of the most bizarre experiences in several diseases. They appear in mental diseases as well as in physical illnesses and may be the consequence of the usage of drugs of abuse. However, a detailed analysis of how patients feel under hallucinations caused by different diseases is uncommon. AIM: This article analyses how visual hallucinations are considered in the works of the neurologist and writer Oliver Sacks, with special attention to his book Hallucinations. DEVELOPMENT: Hallucinations have been under consideration by culture, religion and arts, which has led to multiple interpretations. Sacks's interest in perception of sensations led him to work on the analysis of hallucinations, given the limited knowledge on the topic. References to hallucinations appeared in several of his books like Migraine, Awakenings and A leg to stand on. In Musicophilia Sacks approached the auditory hallucinations and in Hallucinations he considered them in depth. In the latter work, Sacks analyses especially those present in Charles Bonnet syndrome, in situations of sensory deprivation, in patients with epilesy, those present during treatment with levodopa and those caused by drug of abuse. CONCLUSIONS: Hallucinations is one of Sacks's books with greater neuroophthalmological content. The descriptions of the hallucinations of his patients or those experienced by himself, as well as the reflective analysis on the world of perception make this book one of the most fascinating works of Oliver Sacks.


TITLE: Las alucinaciones visuales en la obra de Oliver Sacks.Introducción. Las alucinaciones visuales constituyen una de las manifestaciones más singulares de diversas situaciones clínicas, ya sea en el ámbito de las enfermedades mentales, de las alteraciones físicas o del consumo de drogas. Sin embargo, el análisis detallado de su vivencia en relación con las causas que pueden producirlas es poco frecuente. Objetivo. Considerar la representación de las alucinaciones visuales en las publicaciones del neurólogo y escritor Oliver Sacks, con especial atención a su obra Hallucinations. Desarrollo. Las alucinaciones han llamado la atención de la cultura, la religión y el arte, lo que ha conllevado múltiples interpretaciones. El interés de Sacks por la percepción de las sensaciones le llevó a investigar los mecanismos por los que se producen las alucinaciones, debido al escaso conocimiento que se tenía sobre el tema. Las alucinaciones aparecieron ya en obras como Migraine, Awakenings o A leg to stand on. En Musicophilia abordó las alucinaciones auditivas, y en Hallucinations las consideró de forma monográfica. En esta última obra, Sacks analizó especialmente las presentes en el síndrome de Charles Bonnet, en situaciones de privación sensorial y en pacientes con epilepsia, las precipitadas por la levodopa y las causadas por drogas de abuso. Conclusiones. Hallucinations es una de las obras de Oliver Sacks con mayor contenido neurooftalmológico. La descripción de las alucinaciones de sus pacientes o las experimentadas en su propia piel y la reflexión sobre el mundo de la percepción hacen de Hallucinations una de las obras más fascinantes de Sacks.


Subject(s)
Hallucinations , Medicine in Literature , History, 20th Century , History, 21st Century , Humans , London , New York City
2.
Rev Neurol ; 67(5): 187-191, 2018 Sep 01.
Article in Spanish | MEDLINE | ID: mdl-30047121

ABSTRACT

INTRODUCTION: The use of medical metaphors is common in the social discourse and in the media. However, the use by physicians themselves to define different concepts to the original meaning of the medical word is rare. AIM: To analyze the term «scotoma¼ in its metaphorical sense in the works of the neurologist and writer Oliver Sacks. DEVELOPMENT: Sacks used scotoma metaphorically in two works, in the autobiographical book A leg to stand on and in an essay Scotoma: forgetting and neglect in science. In the first case, he used it to define the sensorial loss of his leg after an accident, which could be interpreted as a «mental scotoma¼. In the second case, Sacks analyzed the process and the reasons of forgetting the works of some early scientific discoverers and discussed why this happened. In this case, Sacks made an analogy with the process suffered by scientific discoveries and the reasons why some of them are largely ignored, in a situation that he called «historical¼ or «social scotoma¼. CONCLUSIONS: Sacks does not use the term «scotoma¼ uniformly. When used to describe the sensorial loss of his leg, it might be considered that scotoma is there a second, although minor but accepted, meaning of the word. However, its use in the definition of historical neglect of early discoveries can be clearly defined as a medical metaphor in full sense.


TITLE: Los escotomas como metafora en la obra de Oliver Sacks.Introduccion. La utilizacion de metaforas medicas es frecuente en el discurso social y en los medios de comunicacion. Sin embargo, su empleo por los propios medicos para definir conceptos distintos al significado original del termino resulta poco habitual. Objetivo. Analizar el empleo del termino «escotoma¼, en su sentido metaforico, en las obras del neurologo y escritor Oliver Sacks. Desarrollo. Sacks uso escotoma metaforicamente en dos obras, en el libro autobiografico A leg to stand on y en un ensayo, Scotoma: forgetting and neglect in science. En el primer caso, lo utilizo para describir la situacion de perdida sensorial de su extremidad inferior, que experimento despues de un accidente, lo que podria interpretarse como un «escotoma mental¼. En el segundo caso, Sacks analizo el proceso y las razones del olvido de las obras de algunos descubridores cientificos precoces y comento por que habia sucedido, una situacion que denomino «escotoma historico¼ o «social¼. Conclusiones. Sacks no utiliza el termino «escotoma¼ de forma uniforme y, si bien en el caso de su accidente podria considerarse como una acepcion menor, pero aceptada, es indudable su uso como metafora medica para describir el olvido y la ignorancia de algunos descubrimientos cientificos en determinadas situaciones historicas.


Subject(s)
Literature, Modern , Medicine in Literature , Metaphor , Neurology/history , Scotoma/psychology , Depersonalization/physiopathology , History, 20th Century , History, 21st Century , Humans , Leg/innervation , Leg Injuries/physiopathology , Leg Injuries/psychology , London , Los Angeles , Memory , New York , Perceptual Disorders/physiopathology
3.
Ann Oncol ; 29(8): 1777-1783, 2018 08 01.
Article in English | MEDLINE | ID: mdl-29893791

ABSTRACT

Background: Trastuzumab improves the outcome of women with HER2 positive breast cancer. We aimed to assess whether trastuzumab decreases the detection rate of circulating tumor cells (CTCs) in women with high risk, HER2 nonamplified, early breast cancer. Patients and methods: The EORTC 90091-10093 BIG 1-12 Treat CTC is a phase II trial, conducted in 70 hospitals and 6 CTC laboratories across 5 European countries. Patients with centrally confirmed HER2 nonamplified breast cancer and ≥1 centrally confirmed CTC per 15 ml of blood by CellSearch® following surgery and (neo)adjuvant chemotherapy were randomized (1 : 1) to 6 cycles of trastuzumab intravenously versus 18 weeks of observation. Randomization was stratified for center, locally confirmed estrogen receptor status and adjuvant versus neoadjuvant chemotherapy. The primary end point was rate of detection of ≥1 CTC per 15 ml of blood at week 18. Secondary end points were invasive disease-free survival (iDFS) and cardiac safety. Results: Between 30 April 2013 and 17 October 2016, 1317 patients were screened; 95 (7.2%) had detectable CTC(s), and 63 (4.8%) were randomized to trastuzumab (n = 31) or observation (n = 32). Fifty-eight patients were assessable for the primary end point, 29 in each arm. In 9 of the 58 patients, CTC(s) were still detected at week 18 : 5 in the trastuzumab and 4 in the observation arm (one-sided Fisher's exact test, P = 0.765). An Independent Data Monitoring Committee recommended stopping further accrual for futility for the primary end point. Median follow-up at database lock was 13 months (IQR 4-16.5). The 1-year iDFS was 93.8% (95% CI 77.3-98.4) in the observation versus 84.8% (95% CI 63.4-94.2) in the trastuzumab arm. No grade 2-4 cardiac events were observed in the trastuzumab arm. Conclusion: Trastuzumab does not decrease the detection rate of CTCs in HER2 nonamplified, nonmetastatic breast cancer.


Subject(s)
Antineoplastic Agents, Immunological/administration & dosage , Breast Neoplasms/therapy , Neoplastic Cells, Circulating/drug effects , Trastuzumab/administration & dosage , Adult , Aged , Antineoplastic Agents, Immunological/adverse effects , Breast/pathology , Breast/surgery , Breast Neoplasms/blood , Breast Neoplasms/mortality , Cardiotoxicity/epidemiology , Cardiotoxicity/etiology , Chemotherapy, Adjuvant/methods , Disease-Free Survival , Female , Humans , Mastectomy , Middle Aged , Receptor, ErbB-2/antagonists & inhibitors , Receptor, ErbB-2/metabolism , Trastuzumab/adverse effects
4.
Ann Oncol ; 27(6): 1020-1029, 2016 06.
Article in English | MEDLINE | ID: mdl-26916095

ABSTRACT

BACKGROUND: Maintenance strategies beyond response or tumor stabilization with first-line chemotherapy in metastatic breast cancer (MBC) have not been extensively studied. Endocrine therapy combined with continued bevacizumab may be a helpful option for estrogen receptor (ER)-positive MBC. PATIENTS AND METHODS: In this prospective, open-label, phase III study, patients with histologically confirmed ER-positive, HER2-negative MBC and non-progressive disease after 16-24 weeks of taxane plus bevacizumab (T + BEV) were randomized to continuation of T + BEV or maintenance bevacizumab plus exemestane (E + BEV). The primary end point was progression-free survival (PFS) from randomization. To have 80% power to detect an improvement in the 6-month PFS rate (PFS6m) from 50% to 65%, 186 assessable patients were needed for a total of 141 PFS events. An interim analysis was planned after 40% of the required events. RESULTS: The interim analysis with 98 patients showed that the probability of reaching a statistically significant improvement in PFS by the end of the study was only 7%. This led the Independent Data and Monitoring Committee to recommend termination of patient enrollment. After a median of 21-month follow-up of all randomized patients (117 in total), PFS6m from randomization was 67.2% [95% confidence interval (CI) 53.6-77.7] with T + BEV and 55.2% (95% CI 41.5-66.9) with E + BEV [hazard ratio (HR): 1.0, 95% CI 0.7-1.5, P = 0.998]. Median PFS from BEV initiation was 12.5 and 12.3 months in the T + BEV and E + BEV arms, respectively. In the T + BEV arm, taxane was prematurely stopped for the majority of patients (94.9%), mainly due to toxicity (49.2%). Updated data after 35 months' median follow-up showed death rates of 44% and 55% in T + BEV and E + BEV arms, respectively. CONCLUSION: In this trial, maintenance therapy with E + BEV in ER-positive, HER2-negative MBC patients with no evidence of progression after first-line T + BEV did not achieve longer PFS compared with continuation of T + BEV. CLINICALTRIALSGOV: NCT01303679.


Subject(s)
Androstadienes/administration & dosage , Bevacizumab/administration & dosage , Breast Neoplasms/drug therapy , Estrogen Receptor alpha/genetics , Receptor, ErbB-2/genetics , Adult , Aged , Aged, 80 and over , Androstadienes/adverse effects , Bevacizumab/adverse effects , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Disease-Free Survival , Drug-Related Side Effects and Adverse Reactions/genetics , Drug-Related Side Effects and Adverse Reactions/pathology , Female , Humans , Middle Aged , Neoplasm Metastasis
7.
J Geriatr Oncol ; 4(4): 394-401, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24472485

ABSTRACT

OBJECTIVES: Our main aim was to describe and explore a multidisciplinary approach to the management of elderly patients with cancer, who constitute a heterogeneous population. MATERIALS AND METHODS: This descriptive study was performed between October 2009 and September 2010. Patients with cancer ≥ 70 years of age were included. Some underwent a simplified multidimensional geriatric assessment with a Charlson score administered by an oncologist, and the evaluation was submitted to a geriatrician who decided whether or not a complete a comprehensive geriatric assessment (CGA) (n=54) should be done. Another group of patients directly underwent a CGA (n=49), and a few patients included in a specific trial underwent a geriatric assessment (n=8). Each patient was classified as fit, vulnerable, or frail by a multidisciplinary team. RESULTS: 111 patients were included (median age: 81 years [range: 65-96]; 60 males). The most frequent types of cancer were lung (n=29), gastrointestinal (n=20) and head and neck (n=14). Median Charlson score was 2.1 [range: 0-9]. Standard therapy was given to 37/41 (90%) fit, 19/41 (42%) vulnerable, and 6/29 (21%) frail patients. Thirteen frail patients received best supportive care. A social worker was mobilized for 2/41 (5%) fit, 14/41 (34%) vulnerable, and 11/29 (38%) frail patients. CONCLUSIONS: Our study outlines the possibilities of cooperation between geriatricians and oncologists in a general hospital. This collaboration could modify therapeutic schedules especially in frail and vulnerable patients.


Subject(s)
Geriatric Assessment/methods , Health Services for the Aged , Models, Theoretical , Neoplasms/therapy , Aged , Aged, 80 and over , Female , Frail Elderly , France , Hospitals, General , Humans , Male , Surveys and Questionnaires
8.
Br J Cancer ; 106(3): 460-7, 2012 Jan 31.
Article in English | MEDLINE | ID: mdl-22173671

ABSTRACT

BACKGROUND: Intraperitoneal (IP) perioperative chemotherapy with cisplatin is an interesting option in ovarian cancer treatment. A combination of cisplatin with IP epinephrine (already shown to improve IP and decrease systemic platinum (Pt) exposure) was evaluated using a population pharmacokinetic analysis. METHODS: Data from 55 patients treated with cisplatin-based IP perioperative chemotherapy with (n=26) or without (n=29) epinephrine were analysed using NONMEM. RESULTS: Epinephrine halves clearance between peritoneum and serum (IPCL) and increases the Pt central volume of distribution, IP exposure and penetration in tissue. IPCL has a better predictive value than any other parameter with respect to renal toxicity. CONCLUSION: This confirms that IPCL could be useful in assessing renal toxicity. As IPCL is also linked to tissue penetration and IP exposure, it may be proposed as biomarker. In addition to a Bayesian estimation, we propose a single-sample calculation-way to assess it. Prospective studies are needed to validate IPCL as a biomarker in this context.


Subject(s)
Antineoplastic Agents/administration & dosage , Cisplatin/administration & dosage , Epinephrine/administration & dosage , Ovarian Neoplasms/drug therapy , Ovarian Neoplasms/surgery , Peritoneum/metabolism , Adult , Aged , Antineoplastic Agents/blood , Antineoplastic Agents/pharmacokinetics , Biomarkers/blood , Biomarkers/metabolism , Chemotherapy, Adjuvant , Cisplatin/blood , Cisplatin/pharmacokinetics , Drug Administration Schedule , Epinephrine/blood , Epinephrine/pharmacokinetics , Female , Humans , Injections, Intraperitoneal , Intraoperative Period , Metabolic Clearance Rate , Middle Aged , Models, Biological , Ovarian Neoplasms/pathology
9.
Gynecol Oncol ; 115(3): 382-8, 2009 Dec.
Article in English | MEDLINE | ID: mdl-19773043

ABSTRACT

OBJECTIVES: The aim of this phase II study was to assess the benefits of a weekly administration of topotecan and gemcitabine in patients with ovarian carcinoma having relapsed after platinum/taxane-based first-line chemotherapy. METHODS: Seventy-seven patients with progression of disease /=2 cycles administered). The only major severe toxicity was neutropenia grades 3 (17%) and 4 (6%). Approximately 60% of the patients received the complete schedule of treatment, dose interruptions/delays being mainly due to moderate thrombocytopenia or neutropenia. The objective response rate was 14%, the values for patients having relapsed within 6 (n=30) and 6-12 (n=36) months being 7% and 20%, respectively. Median durations of response were 4.9 and 6.4 months and clinical benefit rates including stabilizations reached 63% and 69% in patients having relapsed within 6 or 6-12 months, respectively. Corresponding median overall survival was 7.5 and 15.6 months. Symptoms and pain were reduced in 64% and 39% of the patients concerned, respectively. CONCLUSION: In early relapse ovarian cancer, weekly combination of gemcitabine and topotecan has a modest objective response rate. However, a high proportion of patients experienced stable disease and symptom control leading to acceptable quality of life.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Ovarian Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Deoxycytidine/administration & dosage , Deoxycytidine/adverse effects , Deoxycytidine/analogs & derivatives , Drug Administration Schedule , Female , Humans , Infusions, Intravenous , Middle Aged , Quality of Life , Topotecan/administration & dosage , Topotecan/adverse effects , Treatment Outcome , Gemcitabine
10.
Eur J Cancer ; 40(14): 2071-6, 2004 Sep.
Article in English | MEDLINE | ID: mdl-15341981

ABSTRACT

We report the results of a randomised phase II trial of docetaxel tested as a single agent in patients with recurrent head and neck cancer using methotrexate as a control arm to validate the results. Eligibility criteria included: histologically-confirmed squamous cell carcinoma, measurable disease, adequate haematological, renal and hepatic functions, no prior chemotherapy for recurrent cancer, signed informed consent. 40 mg/m2 methotrexate was given as a short weekly bolus i.v. injection, and 40 mg/m2 docetaxel was administered as a one hour weekly infusion. A total of 57 patients were randomised based on a ratio of 2/1:37 and 20 patients received docetaxel and methotrexate, respectively. Patient characteristics included 49 males and 8 females; the median age was 59 years (range: 43-82 years). Twenty-eight patients had a local-regional relapse and 29 had distant metastasis, the median disease-free interval was 7.9 months (range: 0-165 months). For patients treated with docetaxel, the following grade 3-4 toxicities occurred: neutropenia (12.5%) with febrile neutropenia in one patient (1%), anaemia (19%) mucositis (9%) and ungueal toxicity (9%). In the methotrexate arm, the grade 3-4 toxicities were: anaemia (15%) and mucositis (5%). The response rate was significantly higher in the docetaxel arm with 27% (95% confidence interval (CI): 21.7-32.3%) of objective responses versus 15% (95% CI: 11.2-18.8%) in the methotrexate arm. Overall survival and time to progression were super-imposable between the docetaxel and methotrexate treatments. Docetaxel given as a weekly infusion has a high activity in patients with head and neck cancer. A phase III trial is needed to test if this translates into a survival benefit for docetaxel use.


Subject(s)
Antimetabolites, Antineoplastic/therapeutic use , Antineoplastic Agents, Phytogenic/therapeutic use , Carcinoma, Squamous Cell/drug therapy , Head and Neck Neoplasms/drug therapy , Methotrexate/therapeutic use , Neoplasm Recurrence, Local/drug therapy , Taxoids/therapeutic use , Adult , Aged , Aged, 80 and over , Antimetabolites, Antineoplastic/adverse effects , Antineoplastic Agents, Phytogenic/adverse effects , Docetaxel , Female , Humans , Male , Methotrexate/adverse effects , Middle Aged , Survival Analysis , Taxoids/adverse effects , Treatment Outcome
12.
Ann Oncol ; 14(10): 1578-86, 2003 Oct.
Article in English | MEDLINE | ID: mdl-14504061

ABSTRACT

The combination of cisplatin and 5-fluorouracil (5-FU) is considered to be the standard treatment in induction chemotherapy for patients with squamous cell carcinoma of the head and neck. Capecitabine (Xeloda) is an oral fluoropyrimidine that is preferentially activated at the tumoral level, exploiting the higher thymidine phosphorylase activity in tumoral tissue. This phase I trial was conducted in patients with locally recurrent or metastatic head and neck carcinoma. The treatment plan included cisplatin on day 1 every 21 days, followed by capecitabine twice daily from day 2 to day 15, with a 1-week rest period. Pharmacokinetic investigations concerned plasma measurement of unchanged capecitabine, 5'-deoxy-5-fluorocytidine, 5'-doxifluridine and 5-FU using an optimized high performance liquid chromatography method, and cisplatin measurement in plasma using a limited sampling procedure. Twenty-one patients were included (mean age 61 years, range 46-76 years). Dose (mg/m(2)) increments for cisplatin and capecitabine (b.i.d.), respectively, were as follows: level 1, 80 and 1000 (three patients); level 2, 100 and 1000 (12 patients); and level 3, 100 and 1125 (five patients). Dose-limiting toxicities occurring during the first cycle (grade >/= 3) were observed on level 2 (one patient with diarrhea, nausea, vomiting, hand-foot syndrome, one toxic death due to renal failure and neutropenia, one patient with neutropenia) and on level 3 (one patient with diarrhea, one patient with hand-foot syndrome and one patient with neutrothrombocytopenia). Due to delayed side-effects, 14 patients (67%) had repeated cycles every 28 days instead of 21 days as initially planned. Objective response was obtained in seven patients (three complete responses and four partial responses). There was no evidence of pharmacokinetic-pharmacodynamic relationships with the drugs and metabolites investigated. Combination of capecitabine and cisplatin is feasible, with a very promising response rate. The recommended doses for further phase II studies are those of level 2 with cisplatin 100 mg/m(2) on day 1 and capecitabine 1000 mg/m(2) b.i.d. on days 1-14, every 28 days.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics , Deoxycytidine/analogs & derivatives , Head and Neck Neoplasms/drug therapy , Administration, Oral , Aged , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Capecitabine , Chromatography, High Pressure Liquid , Cisplatin/administration & dosage , Cisplatin/adverse effects , Deoxycytidine/administration & dosage , Deoxycytidine/adverse effects , Female , Fluorouracil/analogs & derivatives , Head and Neck Neoplasms/pathology , Humans , Infusions, Intravenous , Male , Maximum Tolerated Dose , Middle Aged , Neoplasm Recurrence, Local/drug therapy , Neoplasm Recurrence, Local/pathology , Treatment Outcome
14.
Cancer Radiother ; 7(3): 195-9, 2003 Jun.
Article in French | MEDLINE | ID: mdl-12834777

ABSTRACT

Epidermal Growth Factor receptor (EGFR) are a key factor for the tumoral proliferation and its tumoral over expression appears to be a powerful prognosis factor. Currently, 2 types of treatments are targeting EGFR: a monoclonal antibodies anti-EGFR and a specific inhibitors of the EGFR tyrosine kinase. The administration of these compound alone or in combination with chemotherapy gives some promising results. These targets as anti-cancer therapy had emerged to be a new perspective for oncology.


Subject(s)
Antibodies, Monoclonal/therapeutic use , Antineoplastic Agents/therapeutic use , ErbB Receptors/antagonists & inhibitors , Neoplasms/drug therapy , Protein-Tyrosine Kinases/antagonists & inhibitors , Antibodies, Monoclonal, Humanized , Biopsy , Cell Transformation, Neoplastic/drug effects , Cetuximab , Clinical Trials as Topic , ErbB Receptors/analysis , ErbB Receptors/physiology , Gefitinib , Gene Expression Regulation, Neoplastic/drug effects , Gene Expression Regulation, Neoplastic/physiology , Humans , Neoplasms/etiology , Neoplasms/mortality , Neoplasms/pathology , Panitumumab , Prognosis , Quinazolines , Signal Transduction/drug effects , Survival Analysis , Treatment Outcome
15.
Ann Oncol ; 14(4): 643-7, 2003 Apr.
Article in English | MEDLINE | ID: mdl-12649114

ABSTRACT

BACKGROUND: Carboplatin is the only cancer drug for which conventional doses are individually adjusted according to estimated clearance and target area under the curve (AUC). The aim of this prospective study was (i) to evaluate intra- and interpatient variability of ultrafilterable (UF) carboplatin AUC(0-)(infinity) and (ii) to test whether the prediction of carboplatin clearance according to the Chatelut formula established for conventional carboplatin doses was accurate for low carboplatin doses. MATERIALS AND METHODS: Thirty-one head and neck cancer patients (29 men, two women, mean age 55.9 years) received concomitant radiotherapy (Rgamma 2 Gy/day) and chemotherapy (carboplatin 50 mg/m(2)/day i.v.) for 7 weeks: Rgamma was administered 5 days/week (days 1-5) and carboplatin 2 days/week (days 1 and 4). Pharmacokinetics was performed once per week. A limited sample strategy based on Bayesian analysis was first validated and blood was subsequently taken 1 and 4 h after the end of carboplatin administration. RESULTS: A total of 143 cycles was analyzed. Ultrafilterable carboplatin AUC(0-)(infinity) ranged from 0.360 to 4.200 mg.min/ml (mean 0.830, median 0.670). As a corollary, UF carboplatin clearance ranged from 19.1 to 244.7 ml/min. Ultrafilterable carboplatin concentrations were very stable over time: AUC(0-)(infinity) variability due to treatment duration contributed to <1% of the total variance, while interpatient variability contributed to 68.6%. Accordingly, intrasubject effect was not significant (P = 0.38) whereas intersubject effect was highly significant (P <0.001). These results suggest that optimal dosage for targeting a given AUC may vary within a 13-fold range between patients. The Chatelut formula, based on creatininemia, body weight, age and sex, over estimates carboplatin clearance by 40% on average (bias 95% CI 29.6% to 51.1%). No significant relationship was observed between either bone marrow toxicity or creatinine clearance decrease and carboplatin pharmacokinetics. CONCLUSIONS: The Chatelut carboplatin clearance model established for conventional carboplatin dosages (>100 mg/m(2)) is not applicable for targeting low AUC (<1 mg x min/ml).


Subject(s)
Antineoplastic Agents/administration & dosage , Antineoplastic Agents/pharmacokinetics , Carboplatin/administration & dosage , Carboplatin/pharmacokinetics , Head and Neck Neoplasms/drug therapy , Models, Theoretical , Adult , Aged , Antineoplastic Agents/pharmacology , Area Under Curve , Bayes Theorem , Carboplatin/pharmacology , Dose-Response Relationship, Drug , Female , Filtration , Head and Neck Neoplasms/pathology , Humans , Infusions, Intravenous , Male , Middle Aged , Reproducibility of Results
16.
Ann Oncol ; 14(3): 373-7, 2003 Mar.
Article in English | MEDLINE | ID: mdl-12598340

ABSTRACT

BACKGROUND: The purpose of this study was to carry out two randomised phase II trials of S16020, a new olivacine derivative, tested as a single agent in patients with recurrent head and neck cancer, using methotrexate as the control arm to validate the results. PATIENTS AND METHODS: S16020 at either 80 or 100 mg/m2 was administered as a 3-h infusion every 3 weeks. Methotrexate, 40 or 50 mg/m2, was given by bolus injection, weekly for a minimum of 6 weeks. In total, 36 patients were entered in the randomised studies (25 in an initial study, 11 in a confirmatory study) of whom 24 received S16020 and 12 received methotrexate. RESULTS: A scheduled interim analysis showed one patient having a non-confirmed objective response with S16020 and three patients having a confirmed objective response with methotrexate. In the methotrexate group, there were no patients with severe non-haematological toxicity. With S16020, there was a high incidence of severe non-haematological toxicities, including asthenia, oedema of the face, oedema and pain at the tumour sites and erythematous rash; consequently, both studies were stopped. CONCLUSIONS: Both studies were stopped due to the poor anticipated benefit/risk ratio for S16020, although time to progression and overall survival time were similar in both treatment arms.


Subject(s)
Antimetabolites, Antineoplastic/adverse effects , Antimetabolites, Antineoplastic/therapeutic use , Carbazoles/adverse effects , Carbazoles/therapeutic use , Head and Neck Neoplasms/drug therapy , Methotrexate/adverse effects , Methotrexate/therapeutic use , Neoplasm Recurrence, Local/drug therapy , Pyridines/adverse effects , Pyridines/therapeutic use , Adult , Aged , Antimetabolites, Antineoplastic/administration & dosage , Carbazoles/administration & dosage , Disease Progression , Drug Administration Schedule , Edema/etiology , Female , Head and Neck Neoplasms/pathology , Humans , Infusions, Intravenous , Injections, Intravenous , Male , Methotrexate/administration & dosage , Middle Aged , Neoplasm Recurrence, Local/pathology , Pyridines/administration & dosage , Survival Analysis , Treatment Outcome
17.
Eur J Cancer ; 37(17): 2169-77, 2001 Nov.
Article in English | MEDLINE | ID: mdl-11677103

ABSTRACT

The aim of this study was to analyse prognostic factors for time to treatment failure (TTF) and overall survival (OS) in patients with unresectable cancer of the pharynx. A twice daily (b.i.d.) radiotherapy with concomitant cisplatin-5-fluorouracil chemotherapy was administered to 77 consecutive patients (68 males, 9 females; median age: 56 years). The studied factors were: age, gender, tumour differentiation, tumour volume, initial hemoglobin level, karnofsky index (KI), primary tumour location, T, N, epidermal growth factor receptor (EGFR) level in the tumour (fmol/mg protein). KI and EGFR level were significant predictors in a multivariate analysis for TTF (P=0.004 and P=0.0001) and OS (P=0.004 and P=0.0001). In order to select subgroups with different outcomes, a stratification of patients was performed based on the EGFR value: patients with tumour EGFR levels <35 fmol/mg protein, between 35 and 275 fmol/mg protein and >275 fmol/mg protein had 95%, 51% and 16% 3 year OS rates, respectively (log rank test; P=0.0001). Interestingly, for patients exhibiting a complete response (CR) after concomitant b.i.d. chemo-radiotherapy, patients with EGFR levels <35 fmol/mg protein were all alive at 3 years; in contrast, there was only 70 and 13% 3 year survival rates for patients with EGFR tumour levels between 35 and 275 fmol/mg protein and above 275 fmol/mg protein, respectively. EGFR determination appears to be a powerful prognostic parameter in unresectable pharyngeal cancer patients treated by concomitant chemo-radiotherapy.


Subject(s)
Biomarkers, Tumor/metabolism , Carcinoma, Squamous Cell/metabolism , ErbB Receptors/metabolism , Pharyngeal Neoplasms/metabolism , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Squamous Cell/drug therapy , Carcinoma, Squamous Cell/radiotherapy , Combined Modality Therapy , Female , Humans , Logistic Models , Male , Middle Aged , Neoplasm Proteins/metabolism , Pharyngeal Neoplasms/drug therapy , Pharyngeal Neoplasms/radiotherapy , Prognosis , Survival Rate , Treatment Outcome
18.
Oncology ; 61(3): 197-204, 2001.
Article in English | MEDLINE | ID: mdl-11574775

ABSTRACT

The purpose of our study was to determine the clinical prognostic factors for the duration of the overall survival from recurrence (OSR) in patients with recurrent head and neck squamous-cell carcinoma. We performed a retrospective analysis on 496 patients treated between 1982 and 1993 at the Antoine Lacassagne Center. The significant favorable prognostic factors for the OSR were: initial T(1-2) (p = 0.008), no initial nodal involvement (p = 0.002), no initial chemotherapy exposure (p = 0.002), induction chemotherapy response (p = 0.001), duration of disease-free interval (DFI; p = 0.0001), performance status (PS) 0-1 (p = 0.004) and local-regional recurrence (p = 0.001). In the multivariate analysis, the apparent nonsignificance of all factors apart from the DFI suggested that relevant prognostic factors could be embedded in the DFI. Multivariate analysis was performed after excluding the DFI. The results indicated that local-regional recurrence, PS 0-1 and no initial chemotherapy exposure remained significant favorable prognostic factors for the OSR. The advantages of taking into account such prognostic factors are to eliminate the patient selection bias and to ensure a fairer comparative evaluation of new or already existing agents in recurrent head and neck cancer.


Subject(s)
Carcinoma, Squamous Cell/mortality , Head and Neck Neoplasms/mortality , Neoplasm Recurrence, Local/epidemiology , Patient Selection , Randomized Controlled Trials as Topic/statistics & numerical data , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Squamous Cell/therapy , Combined Modality Therapy , Disease Progression , Disease-Free Survival , Female , Head and Neck Neoplasms/therapy , Humans , Life Tables , Linear Models , Male , Middle Aged , Multivariate Analysis , Neoplasm Metastasis , Prognosis , Radiotherapy , Risk Factors , Survival Analysis , Treatment Failure
19.
Am J Clin Oncol ; 24(4): 372-5, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11474265

ABSTRACT

The purpose of this report is to evaluate toxicity, response, and survival of the cyclophosphamide-doxorubicin-cisplatin (CAP) chemotherapy regimen in patients with adenocarcinoma of unknown primary site (ACUP). Twenty-two patients with ACUP were eligible for this study between June 1992 and April 1999. There were 13 men (59%) and 9 women (41%) with a median age of 53.5 years (range: 29--78 years). Lung (seven), liver (six), vertebral bone site (six), and abdominal nodes (six) were the most common metastatic sites. Treatment consisted of doxorubicin 50 mg/m(2), cyclophosphamide 1,000 mg/m(2), and cisplatin 100 mg/m(2) (CAP), administered every 3 weeks; a total of six courses were planned. Twenty-two patients were assessable for toxicity and 20 patients were assessable for response. Grade III to IV neutropenia was observed in 14 patients (64%); febrile neutropenia occurred in 6 patients (27%) and in 10 cycles (12.5%). Grade III to IV anemia and thrombocytopenia were found in 12 (54.5%) and 9 patients (41%), respectively. Grade III to IV nausea and vomiting was observed in 9 patients (41%). Ten patients, 50% of the assessable population, obtained an objective response, including 3 complete (15%) and 7 partial (35%) responses. The median response duration was 3.9 months (range: 0.5--13.3 months). One patient (5%) had stable disease and 5 patients (25%) had progressive disease. The median overall survival and the median time to progression were 10.7 months (range: 0.4--56.9 months) and 8.8 months (range: 6.6--16.5 months), respectively. The CAP regimen in patients with ACUP had significant activity. This chemotherapy regimen induced a high level of grade III to IV toxicities and could not be considered as a treatment of reference. However, the emergence of long-term survivors among responder patients highlighted the need to search for an active treatment for patients with ACUP.


Subject(s)
Adenocarcinoma/drug therapy , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Neoplasms, Unknown Primary/drug therapy , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Cisplatin/administration & dosage , Cyclophosphamide/administration & dosage , Doxorubicin/administration & dosage , Female , Humans , Male , Middle Aged , Survival Analysis
20.
Head Neck ; 23(8): 678-82, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11443751

ABSTRACT

BACKGROUND: The purpose of this study is to make a comparative analysis between acute toxicity with late toxicity. This study is based upon a French quality of life (QoL) questionnaire in a cohort of advanced head and neck (H&N) cancer patients treated by concomitant twice-a-day continuous radiotherapy with no acceleration and chemotherapy with cisplatin and 5-fluorouracil. METHODS: From September 1992 to November 1997, a prospective data bank of 91 patients was constituted. In November 1999, 31 patients were still alive and followed for more than 3 years. All patients had stage IV strictly unresectable squamous cell carcinoma of oropharynx or hypopharynx. A French specific H&N cancer QoL questionnaire was used at the end of radiotherapy and at the last date of follow-up of each patient (during 1999). p values reflect comparison of percentages obtained at the end of treatment with percentages at long-term follow-up. Statistical analysis was performed using chi(2) test (p <.05 considered as significant). Percentages obtained by the QoL questionnaire correspond to moderate-severe problems only. RESULTS: Twenty-nine of 31 (94%) patients participated in the QoL study. Acute treatment toxicities were severe with declines in virtually all QoL and functional domains. Globally, with an average long-term follow-up of 4.5 years (range 3-7 years after treatment), there is a statistical improvement in the following symptoms: dry mouth and sticky saliva (97% versus 55%, p <.05); tasting problems (35% versus 21%, not significant); swallowing problems (77% versus 36%, p <.05); and H&N pain (86% versus 9%, p <.05). Financial problems were not improved (21% versus 14%, not significant), and psychological problems (59% versus 5%) were statistically significant. Fourteen of 29 (48%) patients were drinking and 8 of 29 (28%) were smoking at long-term follow-up; at the diagnosis they were 86% and 90%, respectively. At long-term follow-up 22 of 29 presented good or very good QoL, and 25 of 29 said they had improved their initial QoL. CONCLUSION: The interest of twice-a-day radiotherapy with concomitant chemotherapy is to increase total radiotherapy equivalent dose without increasing late toxicity and also to improve locoregional control, survival, and long-term QoL/effectiveness ratio. Best supportive care is recommended to obtain both good QoL and cancer control in a long-term follow-up.


Subject(s)
Carcinoma, Squamous Cell/drug therapy , Carcinoma, Squamous Cell/radiotherapy , Hypopharyngeal Neoplasms/drug therapy , Hypopharyngeal Neoplasms/radiotherapy , Oropharyngeal Neoplasms/drug therapy , Oropharyngeal Neoplasms/radiotherapy , Quality of Life , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Squamous Cell/pathology , Cisplatin/therapeutic use , Enteral Nutrition , Female , Fluorouracil/therapeutic use , Gastrostomy , Humans , Hypopharyngeal Neoplasms/pathology , Male , Middle Aged , Neoplasm Staging , Oropharyngeal Neoplasms/pathology , Radiotherapy Dosage
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