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1.
Blood ; 143(11): 983-995, 2024 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-37979133

RESUMEN

ABSTRACT: Older patients with classical Hodgkin lymphoma (cHL) require more effective and less toxic therapies than younger patients. In this multicenter, prospective, phase 2 study, we investigated a new firstline therapy regimen comprising 6 cycles of prednisone (40 mg/m2, days 1-5), vinblastine (6 mg/m2, day 1), doxorubicin (40 mg/m2, day 1), and bendamustine (120 mg/m2, day 1) (PVAB regimen) every 21 days for patients with newly diagnosed cHL aged ≥61 years with an advanced Ann Arbor stage. A Mini Nutritional Assessment score ≥17 was the cutoff value for patients aged ≥70 years. The primary end point was the complete metabolic response (CMR) rate after 6 cycles. The median age of the 89 included patients was 68 years (range, 61-88 years), with 35 patients (39%) aged ≥70 years. Seventy-eight patients (88%) completed the 6 cycles. The toxicity rate was acceptable, with a 20% rate of related serious adverse events. CMR was achieved by 69 patients (77.5%; 95% confidence interval [CI], 67-86). After a median follow-up of 42 months, 31 patients progressed or relapsed (35%), and 24 died (27%) from HL (n = 11), toxicity during treatment (n = 4), secondary cancers (n = 6), or other causes (n = 3). The 4-year progression-free survival (PFS) and overall survival rates were 50% and 69%, respectively. Multivariate analysis showed that liver involvement (P = .001), lymphopenia (P = .001), CRP (P = .0005), and comedications (P = .003) were independently associated with PFS. The PVAB regimen yielded a high CMR rate with acceptable toxicity. Over long-term follow-up, survival end points were influenced by unrelated lymphoma events. This trial was registered at www.clinicaltrials.gov as #NCT02414568 and at EudraCT as 2014-001002-17.


Asunto(s)
Enfermedad de Hodgkin , Humanos , Anciano , Persona de Mediana Edad , Anciano de 80 o más Años , Enfermedad de Hodgkin/patología , Vinblastina/efectos adversos , Prednisona/efectos adversos , Clorhidrato de Bendamustina/efectos adversos , Estudios Prospectivos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Doxorrubicina/efectos adversos , Ciclofosfamida , Vincristina
2.
Radiology ; 295(3): 651-661, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32286191

RESUMEN

Background CT and fluorine 18 (18F) fluorodeoxyglucose (FDG) PET/CT performances following immune therapy are not well known in patients with relapsed or refractory Hodgkin lymphoma (RRHL). Purpose To compare CT and PET/CT for prognostic value of early response evaluation following nivolumab therapy. Materials and Methods This retrospective study included patients from 34 institutions who underwent early imaging response evaluation from July 2013 to April 2017. Three experienced readers classified imaging response by using Cheson et al and 2016 Lymphoma Response to Immunomodulatory Therapy Criteria as follows: complete (metabolic) response, partial (metabolic) response, stable disease or no metabolic response, or progressive (metabolic) disease. Primary CT and PET assessments were performed at a median of 2.0 months (interquartile range, 1.7-3.7 months) after nivolumab initiation. Kaplan-Meier analysis was used to determine the relationship of primary CT and PET assessment response categories to overall survival (OS). Agreements between primary and secondary imaging assessments were assessed by using κ analysis. Results A total of 45 patients (median age, 37 years; range, 18-77 years; 25 men) underwent a primary assessment using CT and PET/CT; 36 patients also underwent a subsequent assessment. Eleven patients (24%) died after a median follow-up of 21.2 months. CT and PET response categories were associated with OS (P = .03 for primary CT assessment; P = .02 for primary PET assessment). There was no pseudoprogression at primary CT and PET assessments. At the primary assessment, response categories by using CT were reclassified by using PET in 44% (20 of 45) of patients. Among these, 55% (11 of 20) were reclassified to complete metabolic response (complete metabolic response rate: 29% [13 of 45 patients] vs complete response rate: 4% [two of 45 patients]), with a 2-year OS probability of 100%. At the secondary assessment, complete response rate using CT increased to 17% (six of 36 patients), hence a better agreement with PET (κ = 0.78; P < .001). Conclusion Early CT and PET/CT at a median of 2 months after initiation of nivolumab predicted overall survival in relapsed or refractory Hodgkin lymphoma. Early PET detected additional patients with complete metabolic response. © RSNA, 2020 Online supplemental material is available for this article. See also the editorial by Scott and Wang in this issue.


Asunto(s)
Fluorodesoxiglucosa F18 , Enfermedad de Hodgkin/diagnóstico por imagen , Enfermedad de Hodgkin/tratamiento farmacológico , Recurrencia Local de Neoplasia , Nivolumab/uso terapéutico , Tomografía Computarizada por Tomografía de Emisión de Positrones , Tomografía Computarizada por Rayos X , Adolescente , Adulto , Anciano , Femenino , Enfermedad de Hodgkin/mortalidad , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/diagnóstico por imagen , Recurrencia Local de Neoplasia/tratamiento farmacológico , Estudios Retrospectivos , Sensibilidad y Especificidad , Resultado del Tratamiento , Adulto Joven
3.
Br J Haematol ; 187(4): 530-542, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31338833

RESUMEN

Congenital sideroblastic anaemia (CSA) is a rare disease caused by germline mutations of genes involved in haem and iron-sulphur cluster formation, and mitochondrial protein biosynthesis. We performed a retrospective multicentre European study of a cohort of childhood-onset CSA patients to explore genotype/phenotype correlations. We studied 23 females and 20 males with symptoms of CSA. Among the patients, the most frequently mutated genes were ALAS2 (n = 10; 23·3%) and SLC25A38 (n = 8; 18·6%), causing isolated forms of microcytic anaemia of varying severity. Five patients with SLC19A2 mutations suffered from thiamine-responsive megaloblastic anaemia and three exhibited the 'anaemia, deafness and diabetes' triad. Three patients with TRNT1 mutations exhibited severe early onset microcytic anaemia associated with thrombocytosis, and two exhibited B-cell immunodeficiency, inflammatory syndrome and psychomotor delay. The prognoses of patients with TRNT1 and SLC2A38 mutations were generally dismal because of comorbidities or severe iron overload. No molecular diagnosis could be established in 14/43 cases. This study emphasizes the frequency of ALAS2 and SLC25A38 mutations and provides the largest comprehensive analysis to date of genotype/phenotype correlations in CSA. Further studies of CSA patients with data recorded in an international registry would be helpful to improve patient management and establish standardized guidelines.


Asunto(s)
5-Aminolevulinato Sintetasa/genética , Anemia Sideroblástica/genética , Estudios de Asociación Genética , Enfermedades Genéticas Ligadas al Cromosoma X/genética , Proteínas de Transporte de Membrana Mitocondrial/genética , Anemia Sideroblástica/patología , Niño , Estudios de Cohortes , Europa (Continente) , Femenino , Enfermedades Genéticas Ligadas al Cromosoma X/patología , Humanos , Masculino , Mutación , Nucleotidiltransferasas/genética , Estudios Retrospectivos
6.
Blood Cells Mol Dis ; 66: 11-18, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28772256

RESUMEN

The most frequent germline mutations responsible for non syndromic congenital sideroblastic anemia are identified in ALAS2 and SLC25A38 genes. Iron overload is a key issue and optimal chelation therapy should be used to limit its adverse effects on the development of children. Our multicentre retrospective descriptive study compared the strategies for diagnosis and management of congenital sideroblastic anemia during the follow-up of six patients with an ALAS2 mutation and seven patients with an SLC25A38 mutation. We described in depth the clinical, biological and radiological phenotype of these patients at diagnosis and during follow-up and highlighted our results with a review of available evidence and data on the management strategies for congenital sideroblastic anemia. This report confirms the considerable variability in manifestations among patients with ALAS2 or SLC25A38 mutations and draws attention to differences in the assessment and the monitoring of iron overload and its complications. The use of an international registry would certainly help defining recommendations for the management of these rare disorders to improve patient outcome.


Asunto(s)
5-Aminolevulinato Sintetasa/genética , Anemia Sideroblástica/congénito , Proteínas de Transporte de Membrana Mitocondrial/genética , Anemia Sideroblástica/genética , Niño , Humanos , Sobrecarga de Hierro , Fenotipo , Estudios Retrospectivos
7.
Ann Vasc Surg ; 43: 265-271, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28478173

RESUMEN

BACKGROUND: Paragangliomas of the head and neck are rare vascular tumors derived from the paraganglia tissues originating from the neural crest. They are usually benign and hypervascularized. Diagnosis is relatively easy in condition to consider it in evaluating every lateral neck mass. METHODS: We made a retrospective study of the records of 10 patients who presented with carotid body tumors at the Department of Vascular surgery of the Military Hospital Avicenne in Marrakech during the period between 2008 and 2013. Epidemiologic, etiologic, diagnostic, and therapeutic features were analyzed. RESULTS: The average age of our patients was 35.4 years (26-55 years), with a male predominance (sex ratio = 2.33). We noted 7 cases of isolated carotid locations and 3 cases of multiple locations. A slow-growing neck mass was the main clinical presentation. Other signs were pain, dysphonia, dizziness, headache, and tinnitus. Physical examination showed, in most cases, a neck nontender mass with side to side mobility. Imaging techniques included Doppler ultrasound, computed tomography (CT) scan, magnetic resonance imaging, and catheter arteriography. Urinary analysis for metanephrine was carried out in 1 case. The clinical presentation and imaging results strongly suggested the diagnosis of carotid paraganglioma in all cases. Treatment was surgical excision in all cases associated with a preoperative embolization in 1 case and a postoperative radiotherapy in 2 cases. Pathology confirmed the diagnosis, and a lymph node metastasis was suspected of malignity in 1 case. The evolution was favorable in all our patients. CONCLUSIONS: Carotid body tumor requires early diagnosis and an adequate multidisciplinary team. The diagnosis must be considered in the case of any pulsatile cervical mass. Surgery is the treatment of choice despite its risks especially in large tumors. The therapeutic indication should, ideally, be set in a multidisciplinary consultation.


Asunto(s)
Tumor del Cuerpo Carotídeo , Adulto , Tumor del Cuerpo Carotídeo/diagnóstico por imagen , Tumor del Cuerpo Carotídeo/epidemiología , Tumor del Cuerpo Carotídeo/secundario , Tumor del Cuerpo Carotídeo/terapia , Angiografía por Tomografía Computarizada , Embolización Terapéutica , Femenino , Hospitales Militares , Humanos , Metástasis Linfática , Angiografía por Resonancia Magnética , Masculino , Persona de Mediana Edad , Marruecos/epidemiología , Imagen Multimodal , Disección del Cuello , Valor Predictivo de las Pruebas , Radioterapia Adyuvante , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Procedimientos Quirúrgicos Vasculares
8.
Support Care Cancer ; 24(12): 5007-5014, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27525991

RESUMEN

At home injectable chemotherapy for patients receiving treatment for hematological diseases is still in debate. Given the expense of new innovative medicines, at home treatment has been proposed as a suitable option for improving patient quality of life and decreasing treatment costs. We decided to assess the cost of bortezomib administration in France among multiple myeloma patients from an economic standpoint. Patients in this study were treated within a regional hematological network combining outpatient hospital care and Hospital care at Home administration. To make the cost comparison, our team simulated outpatient hospital care expenses. Fifty-four consecutive multiple myeloma patients who received at least one injection of bortezomib in Hospital care at Home from January 2009 to December 2011 were included in the study. The median number of injections was 12 (range 1-44) at home and 6 (range 0-30) in the outpatient care unit. When compared with the cost simulation of outpatient hospital care alone, bortezomib administration with combined care was significantly less expensive for the National Health Insurance (NHI) budget. The mean total cost per patient and per injection was 954.20 € for combined outpatient and Hospital care at Home vs 1143.42 € for outpatient hospital care alone. This resulted in an estimated 16.5 % cost saving (Wilcoxon signed-rank test, p < 0.0001). The greatest savings were observed in administration costs (37.5 % less) and transportation costs (68.1 % less). This study reflects results for a regionally implemented program for multiple myeloma patients treated with bortezomib in routine practice in a large rural area.


Asunto(s)
Antineoplásicos/uso terapéutico , Bortezomib/uso terapéutico , Ahorro de Costo/métodos , Análisis Costo-Beneficio/métodos , Mieloma Múltiple/economía , Anciano , Atención Ambulatoria , Antineoplásicos/administración & dosificación , Bortezomib/administración & dosificación , Femenino , Costos de la Atención en Salud , Servicios de Atención de Salud a Domicilio , Humanos , Masculino , Mieloma Múltiple/tratamiento farmacológico , Pacientes Ambulatorios , Calidad de Vida
9.
Haematologica ; 100(12): 1579-86, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26430172

RESUMEN

Nodular lymphocyte predominant Hodgkin lymphoma represents a distinct entity from classical Hodgkin lymphoma. We conducted a retrospective study to investigate the management of patients with nodular lymphocyte predominant Hodgkin lymphoma. Clinical characteristics, treatment and outcome of adult patients with nodular lymphocyte predominant Hodgkin lymphoma were collected in Lymphoma Study Association centers. Progression-free survival (PFS) and overall survival (OS) were analyzed, and the competing risks formulation of a Cox regression model was used to control the effect of risk factors on relapse or death as competing events. Among 314 evaluable patients, 82.5% had early stage nodular lymphocyte predominant Hodgkin lymphoma. Initial management consisted in watchful waiting (36.3%), radiotherapy (20.1%), rituximab (8.9%), chemotherapy or immuno-chemotherapy (21.7%), combined modality treatment (12.7%), or radiotherapy plus rituximab (0.3%). With a median follow-up of 55.8 months, the 10-year PFS and OS estimates were 44.2% and 94.9%, respectively. The 4-year PFS estimates were 79.6% after radiotherapy, 77.0% after rituximab alone, 78.8% after chemotherapy or immuno-chemotherapy, and 93.9% after combined modality treatment. For the whole population, early treatment with chemotherapy or radiotherapy, but not rituximab alone (Hazard ratio 0.695 [0.320-1.512], P=0.3593) significantly reduced the risk of progression compared to watchful waiting (HR 0.388 [0.234-0.643], P=0.0002). Early treatment appears more beneficial compared to watchful waiting in terms of progression-free survival, but has no impact on overall survival. Radiotherapy in selected early stage nodular lymphocyte predominant Hodgkin lymphoma, and combined modality treatment, chemotherapy or immuno-chemotherapy for other patients, are the main options to treat adult patients with a curative intent.


Asunto(s)
Enfermedad de Hodgkin , Modelos Biológicos , Adolescente , Adulto , Anciano , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Enfermedad de Hodgkin/clasificación , Enfermedad de Hodgkin/mortalidad , Enfermedad de Hodgkin/terapia , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia
10.
Bull Cancer ; 111(10): 980-986, 2024 Oct.
Artículo en Francés | MEDLINE | ID: mdl-39266427

RESUMEN

In response to the French hospital system crisis and the challenges faced by the heads of departments, we have undertaken an initiative to create a community of heads of haematology departments willing to assist each other. Our inaugural seminar, held in January 2023, established the foundational "core" group of heads of department. Throughout 2023, this emerging community has prospered, offering sustained support to peers. In January 2024, we broadened our community to include other heads of departments, following a second seminar gathering 36 participants. During this event, we took the time to exchange thoughts and reflect on our missions. Building on the experience of guest speakers and employing methods of co-development and co-construction in plenary sessions, small-group workshops, and social gathering, we were able to discover and experience the collective intelligence, creativity, strength, and support stemming from such a group. This peer community of heads of departments stands as a powerful tool for management support, whereby personal experiences nourish and enrich the experience of others. We hope that our initiative will inspire heads of departments from other specialties so that, together, we can better work towards our missions as heads of departments and collaborate on rebuilding the hospital "from the bottom up".


Asunto(s)
Hematología , Departamentos de Hospitales , Humanos , Francia , Hematología/organización & administración , Departamentos de Hospitales/organización & administración , Grupo Paritario
11.
Haematologica ; 98(8): 1185-95, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23904236

RESUMEN

The Hodgkin's Lymphoma Committee of the Lymphoma Study Association (LYSA) gathered in 2012 to prepare guidelines on the management of transplant-eligible patients with relapsing or refractory Hodgkin's lymphoma. The working group is made up of a multidisciplinary panel of experts with a significant background in Hodgkin's lymphoma. Each member of the panel of experts provided an interpretation of the evidence and a systematic approach to obtain consensus was used. Grades of recommendation were not required since levels of evidence are mainly based on phase II trials or standard practice. Data arising from randomized trials are emphasized. The final version was endorsed by the scientific council of the LYSA. The expert panel recommends a risk-adapted strategy (conventional treatment, or single/double transplantation and/or radiotherapy) based on three risk factors at progression (primary refractory disease, remission duration < 1 year, stage III/IV), and an early evaluation of salvage chemosensitivity, including (18)fluorodeoxy glucose-positron emission tomography interpreted according to the Deauville scoring system. Most relapsed or refractory Hodgkin's lymphoma patients chemosensitive to salvage should receive high-dose therapy and autologous stem-cell transplantation as standard. Efforts should be made to increase the proportion of chemosensitive patients by alternating non-cross-resistant chemotherapy lines or exploring the role of novel drugs.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas/normas , Enfermedad de Hodgkin/terapia , Recurrencia Local de Neoplasia/terapia , Guías de Práctica Clínica como Asunto/normas , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Trasplante de Células Madre Hematopoyéticas/métodos , Enfermedad de Hodgkin/diagnóstico , Humanos , Recurrencia Local de Neoplasia/diagnóstico , Ensayos Clínicos Controlados Aleatorios como Asunto/métodos , Ensayos Clínicos Controlados Aleatorios como Asunto/normas , Terapia Recuperativa/métodos , Terapia Recuperativa/normas , Sociedades Médicas/normas
13.
J Clin Oncol ; 41(2): 327-335, 2023 01 10.
Artículo en Inglés | MEDLINE | ID: mdl-35867960

RESUMEN

PURPOSE: The prognosis of patients with early-stage unfavorable Hodgkin lymphoma remains unsatisfactory. We assessed the efficacy and safety of brentuximab vedotin plus doxorubicin, vinblastine, and dacarbazine (BV-AVD) in previously untreated, early-stage unfavorable Hodgkin lymphoma (ClinicalTrials.gov identifier: NCT02292979). METHODS: BREACH is a multicenter, randomized, open-label, phase II trial. Eligible patients were age 18-60 years with ≥ 1 unfavorable EORTC/LYSA criterion. Patients were randomly assigned (2:1) to four cycles of BV-AVD or standard doxorubicin, bleomycin, vincristine, and dacarbazine (ABVD), followed by 30 Gy involved node radiotherapy. The primary end point was the positron emission tomography (PET) response rate after two cycles by expert independent review using the Deauville score. The study was designed to test if the PET-negative rate after two cycles of BV-AVD was superior to 75%. We hypothesized a 10% increase in the PET-negative rate after two cycles of BV-AVD. RESULTS: Between March 2015 and October 2016, 170 patients were enrolled. After two cycles, the primary end point of the study was met: 93 (82.3%; 90% CI, 75.3 to 88.0) of 113 patients in the BV-AVD arm were PET-negative (Deauville score 1-3) compared with 43 (75.4%; 90% CI, 64.3% to 84.5%) of 57 in the ABVD arm. The 2-year progression-free survival (PFS) was 97.3% (95% CI, 91.9 to 99.1) and 92.6% (95% CI, 81.4% to 97.2%) in the BV-AVD and ABVD arms, respectively. High total metabolic tumor volume was associated with a significantly shorter PFS (hazard ratio, 17.9; 95% CI, 2.2 to 145.5; P < .001). For patients with high total metabolic tumor volume, the 2-year PFS rate was 90.9% (95% CI, 74.4 to 97.0) and 70.7% (95% CI, 39.4% to 87.9%) in the BV-AVD and ABVD arms, respectively. CONCLUSION: BV-AVD demonstrated an improvement in the PET-negative rate compared with ABVD after two cycles.


Asunto(s)
Enfermedad de Hodgkin , Humanos , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Enfermedad de Hodgkin/diagnóstico por imagen , Enfermedad de Hodgkin/tratamiento farmacológico , Enfermedad de Hodgkin/patología , Brentuximab Vedotina , Bleomicina , Vinblastina , Doxorrubicina , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Dacarbazina , Estadificación de Neoplasias , Resultado del Tratamiento
14.
J Ultrasound ; 25(4): 827-830, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35122637

RESUMEN

OBJECTIVES: Nodules of the thyroid gland are common but rarely malignant. Their management can range from simple monitoring to surgery. The use of ultrasound and fine needle aspiration can reduce the rate of unnecessary surgeries. However, there is a risk of false positives and false negatives of malignancy that only pathology can avoid. The objective of this study is to assess the impact of ultrasound classification on the rate of surgical indications. MATERIAL AND METHODS: Between 2013 and 2017, the ultrasound classification was gradually adopted in our daily practice to become now routine. During this period, we conducted a retrospective study of all the patients who presented to our department for one or more thyroid nodules. RESULTS: A total of 577 patients were included in the study. We compared two groups, a first where the ultrasound classification was used and a second where this classification was not used. In the end, we found that this classification significantly reduced the surgical indication by 19% while increasing the malignancy detection rate in operated patients by 21%. CONCLUSIONS: The use of ultrasound classification reduces the indications for surgery while increasing the rate of malignancy in operated patients. The generalization of the use of the ultrasound classification score is strongly recommended in daily practice.


Asunto(s)
Neoplasias de la Tiroides , Nódulo Tiroideo , Humanos , Estudios Retrospectivos , Neoplasias de la Tiroides/diagnóstico por imagen , Neoplasias de la Tiroides/cirugía , Neoplasias de la Tiroides/patología , Nódulo Tiroideo/diagnóstico por imagen , Nódulo Tiroideo/cirugía , Nódulo Tiroideo/patología , Biopsia con Aguja Fina
15.
Head Neck Pathol ; 16(4): 1130-1133, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35881224

RESUMEN

BACKGROUND: With the advent of biotherapies, endotyping of chronic rhinosinusitis with nasal polyps (CRSwNP) is becoming more and more important to optimize therapeutic management. While the majority of CRSwNPs in the United States, Europe, and Japan exhibit type 2 eosinophil-dominant inflammation response, other parts of Asia display mixed patterns including neutrophil-dominant inflammation. Until now, no study has focused on the proportion of inflammation patterns in Morocco or anywhere on the African continent. We aim to fill this gap by studying tissue inflammatory response in our operated patients. MATERIAL AND METHODS: After searching the database of the pathology department, we retrieved from the archives the stained pathology slides of all our patients who underwent surgery for CRSwNP over 5 years from 2017 to 2021. We counted then the number of eosinophils in the lamina propria at high-power magnification to determine the predominant inflammatory pattern. RESULTS: A total of 35 reports were collected. We found that eosinophilic inflammation was predominant, accounting for 97% of the cases. CONCLUSIONS: The CRSwNP endotype in our region would mainly be type 2. However, our results must be confirmed by multicenter studies involving a large number of patients.


Asunto(s)
Pólipos Nasales , Humanos , Pólipos Nasales/complicaciones
16.
Hum Mutat ; 32(6): 590-7, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21309041

RESUMEN

X-linked Sideroblastic Anemia (XLSA) is the most common genetic form of sideroblastic anemia, a heterogeneous group of disorders characterized by iron deposits in the mitochondria of erythroid precursors. XLSA is due to mutations in the erythroid-specific 5-aminolevulinate synthase (ALAS2) gene. Thirteen different ALAS2 mutations were identified in 16 out of 29 probands with sideroblastic anemia. One third of the patients were females with a highly skewed X-chromosome inactivation. The identification of seven novel mutations in the ALAS2 gene, six missense mutations, and one deletion in the proximal promoter extends the allelic heterogeneity of XSLA. Most of the missense mutations were predicted to be deleterious, and 10 of them, without any published functional characterization, were expressed in Escherichia coli. ALAS2 activities were assayed in vitro. Five missense mutations resulted in decreased enzymatic activity under standard conditions, and two other mutated proteins had decreased activity when assayed in the absence of exogenous pyridoxal phosphate and increased thermosensitivity. Although most amino acid substitutions result in a clearly decreased enzymatic activity in vitro, a few mutations have a more subtle effect on the protein that is only revealed by in vitro tests under specific conditions.


Asunto(s)
5-Aminolevulinato Sintetasa/genética , Anemia Sideroblástica/genética , Mutación Missense , Adulto , Sustitución de Aminoácidos , Niño , Femenino , Expresión Génica , Enfermedades Genéticas Ligadas al Cromosoma X , Hemo/biosíntesis , Hemo/genética , Humanos , Lactante , Hierro/metabolismo , Masculino , Persona de Mediana Edad , Conformación Proteica , Protoporfirinas/genética , Inactivación del Cromosoma X
17.
Case Rep Crit Care ; 2021: 6679279, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34721906

RESUMEN

BACKGROUND: Following acute traumatic brain injury, cerebral salt wasting (CSW) syndrome is considered as an important cause of hyponatremia apart from syndrome of inappropriate antidiuretic hormone. Differentiation between the two syndromes is crucial for the initiation of an adequate treatment. Case Presentation. We report a 15-year-old female adolescent, admitted to intensive care for acute severe traumatic brain injury. During his hospitalization, she developed a hyponatremia with an increase of urine output and hypovolemia. So, the most probable diagnosis was CSW. Initially, she was treated by hypertonic saline and volume expansion. However, his sodium level continued to fall despite infusion of hypertonic saline. That is why fludrocortisone was introduced initially at 50 µg/day then increased to 150 µg/day. Fludrocortisone was continued for the next months. Serum sodium level was 138 mmol/L after one month of treatment. CONCLUSION: Hyponatremia may occur after severe traumatic brain injury that is why an adequate treatment initiated on time is necessary in order to reduce morbidity and mortality.

18.
J Clin Oncol ; 39(29): 3251-3260, 2021 10 10.
Artículo en Inglés | MEDLINE | ID: mdl-34156881

RESUMEN

PURPOSE: The prospective, randomized AHL2011 trial demonstrated that the use of the doxorubicin, bleomycin, vinblastine, and dacarbazine regimen (ABVD) after two cycles of bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, and prednisone (BEACOPPescalated) in early responders on the basis of a positron emission tomography (PET)-driven strategy was safe and minimized toxicity compared with standard 6 BEACOPPescalated cycles. This substudy investigated the benefit of this strategy in gonadal function and fertility in patients under 45 years old. METHODS: Ovarian function was assessed by serum measurement of follicle-stimulating hormone (FSH), estradiol, and anti-müllerian hormone in women, and semen analysis, FSH, and testosterone levels were used to evaluate testicular function in men at baseline, end of treatment, and during 5 years of follow-up. RESULTS: A total of 145 women and 424 men, enrolled between May 19, 2011, and April 29, 2014, were included. The risk of premature ovarian insufficiency (FSH > 24 IU/L) and of having a low ovarian reserve (anti-müllerian hormone < 0.5 ng/mL) was reduced after treatment in the PET-driven group (odds ratio [OR], 0.20; 95% CI, 0.08 to 0.50; P = .001 and OR, 0.15; 95% CI, 0.04 to 0.56, P = .005, respectively). Both parameters were correlated with age and dose of alkylating agents. However, no significant differences were observed in terms of pregnancy rates. Men in the PET-driven group had a higher recovery rate of sperm parameters after treatment compared with the standard BEACOPPescalated group, as well as a lower risk of severe testicular damage (OR, 0.26; 95% CI, 0.13 to 0.5; P < .0001) and a higher likelihood of achieving pregnancy (OR, 3.7; 95% CI, 1.4 to 9.3; P = .004). CONCLUSION: Although both treatments affected ovarian reserve and spermatogenesis, the PET-driven strategy decreased the risk of gonadal dysfunction and infertility in advanced Hodgkin lymphoma.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Enfermedad de Hodgkin/tratamiento farmacológico , Ovario/fisiopatología , Tomografía de Emisión de Positrones/métodos , Testículo/fisiopatología , Adulto , Hormona Antimülleriana/sangre , Femenino , Enfermedad de Hodgkin/diagnóstico por imagen , Enfermedad de Hodgkin/fisiopatología , Humanos , Masculino , Estudios Prospectivos , Recuperación de la Función
20.
J Nucl Med ; 61(5): 649-654, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-31628220

RESUMEN

Monoclonal antibodies (mAbs) against programmed cell death 1 (PD-1), such as nivolumab and pembrolizumab, are associated with high response rates in patients with relapsed or refractory classic Hodgkin lymphoma (HL). To date, no prognostic factor for overall survival (OS) has been established with these agents in HL. We examined whether the first early response assessment evaluated using 18F-FDG PET/CT may be associated with OS in this setting. Methods: This retrospective study included 45 patients from 34 institutions. In a masked, centralized review, 3 independent radiologists classified PET/CT scans obtained at a median of 2.0 mo (interquartile range, 1.7-3.7 mo) after nivolumab initiation using existing criteria (i.e., 2014 Lugano classification and 2016 LYRIC). Patients were classified according to 4 possible response categories: complete metabolic response (CMR), partial metabolic response (PMR), no metabolic response (NMR), or progressive metabolic disease (PMD). Because the OS of patients with NMR and PMR was similar, they were grouped together. OS was estimated using the Kaplan-Meier method and compared between groups using log-rank testing. Results: Eleven patients (24%) died after a median follow-up of 21.2 mo. The classification was identical between Lugano and LYRIC because all 16 progression events classified as indeterminate response per LYRIC were confirmed on subsequent evaluations. Both Lugano and LYRIC classified patients as CMR in 13 cases (29%), PMD in 16 (36%), NMR in 4 (9%), and PMR in 12 (27%). The 2-y OS probability was significantly different in patients with PMD (0.53; 95% confidence interval [95%CI], 0.32-0.87), NMR or PMR (0.80; 95%CI, 0.63-1.00), and CMR (1.00; 95%CI, 1.00-1.00) in the overall population (P = 0.02, 45 patients), as well as according to a landmark analysis at 3 mo (P = 0.05, 32 patients). Conclusion: In relapsed or refractory HL patients treated with anti-PD-1 mAbs, the first early PET/CT assessment using either Lugano or LYRIC predicted OS and allowed early risk stratification, suggesting that PET/CT might be used to develop risk-adapted strategies.


Asunto(s)
Fluorodesoxiglucosa F18 , Enfermedad de Hodgkin/diagnóstico por imagen , Enfermedad de Hodgkin/tratamiento farmacológico , Nivolumab/farmacología , Tomografía Computarizada por Tomografía de Emisión de Positrones , Adolescente , Adulto , Anciano , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nivolumab/uso terapéutico , Recurrencia , Estudios Retrospectivos , Factores de Tiempo , Insuficiencia del Tratamiento , Adulto Joven
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