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1.
Liver Transpl ; 23(5): 645-651, 2017 05.
Article in English | MEDLINE | ID: mdl-28188668

ABSTRACT

There is a lack of data on incidental hepatocellular carcinoma (iHCC) in the setting of liver transplantation (LT) in human immunodeficiency virus (HIV)-infected patients. This study aims to describe the frequency, histopathological characteristics, and outcomes of HIV+ LT recipients with iHCC from a Spanish multicenter cohort in comparison with a matched cohort of LT patients without HIV infection. A total of 15 (6%) out of 271 patients with HIV infection who received LT in Spain from 2002 to 2012 and 38 (5%) out of the 811 HIV- counterparts presented iHCC in liver explants (P = 0.58). Patients with iHCC constitute the present study population. All patients also had hepatitis C virus (HCV)-related cirrhosis. There were no significant differences in histopathological features of iHCC between the 2 groups. Most patients showed a small number and size of tumoral nodules, and few patients had satellite nodules, microvascular invasion, or poorly differentiated tumors. After a median follow-up of 49 months, no patient developed hepatocellular carcinoma (HCC) recurrence after LT. HIV+ LT recipients tended to have lower survival than their HIV- counterparts at 1 (73% versus 92%), 3 (67% versus 84%), and 5 years (50% versus 80%; P = 0.06). There was also a trend to a higher frequency of HCV recurrence as a cause of death in the former (33% versus 10%; P = 0.097). In conclusion, among LT recipients for HCV-related cirrhosis, the incidence and histopathological features of iHCC in HIV+ and HIV- patients were similar. However, post-LT survival was lower in HIV+ patients probably because of a more aggressive HCV recurrence. Liver Transplantation 23 645-651 2017 AASLD.


Subject(s)
Carcinoma, Hepatocellular/complications , HIV Infections/complications , Liver Failure/complications , Liver Neoplasms/complications , Liver Transplantation/mortality , Adult , Female , Humans , Liver Failure/surgery , Male , Middle Aged , Prospective Studies , Spain/epidemiology
2.
Hepatology ; 63(2): 488-98, 2016 Feb.
Article in English | MEDLINE | ID: mdl-26516761

ABSTRACT

UNLABELLED: The impact of human immunodeficiency virus (HIV) infection on patients undergoing liver transplantation (LT) for hepatocellular carcinoma (HCC) is uncertain. This study aimed to assess the outcome of a prospective Spanish nationwide cohort of HIV-infected patients undergoing LT for HCC (2002-2014). These patients were matched (age, gender, year of LT, center, and hepatitis C virus (HCV) or hepatitis B virus infection) with non-HIV-infected controls (1:3 ratio). Patients with incidental HCC were excluded. Seventy-four HIV-infected patients and 222 non-HIV-infected patients were included. All patients had cirrhosis, mostly due to HCV infection (92%). HIV-infected patients were younger (47 versus 51 years) and had undetectable HCV RNA at LT (19% versus 9%) more frequently than non-HIV-infected patients. No significant differences were detected between HIV-infected and non-HIV-infected recipients in the radiological characteristics of HCC at enlisting or in the histopathological findings for HCC in the explanted liver. Survival at 1, 3, and 5 years for HIV-infected versus non-HIV-infected patients was 88% versus 90%, 78% versus 78%, and 67% versus 73% (P = 0.779), respectively. HCV infection (hazard ratio = 7.90, 95% confidence interval 1.07-56.82) and maximum nodule diameter >3 cm in the explanted liver (hazard ratio = 1.72, 95% confidence interval 1.02-2.89) were independently associated with mortality in the whole series. HCC recurred in 12 HIV-infected patients (16%) and 32 non-HIV-infected patients (14%), with a probability of 4% versus 5% at 1 year, 18% versus 12% at 3 years, and 20% versus 19% at 5 years (P = 0.904). Microscopic vascular invasion (hazard ratio = 3.40, 95% confidence interval 1.34-8.64) was the only factor independently associated with HCC recurrence. CONCLUSIONS: HIV infection had no impact on recurrence of HCC or survival after LT. Our results support the indication of LT in HIV-infected patients with HCC.


Subject(s)
Carcinoma, Hepatocellular/complications , Carcinoma, Hepatocellular/surgery , HIV Infections/complications , Liver Neoplasms/complications , Liver Neoplasms/surgery , Liver Transplantation , Adult , Female , Humans , Male , Middle Aged , Prognosis , Prospective Studies
3.
Gastroenterol. hepatol. (Ed. impr.) ; 38(9): 517-524, nov. 2015. graf, tab
Article in Spanish | IBECS | ID: ibc-143411

ABSTRACT

INTRODUCCIÓN: Las primeras semanas del tratamiento triple contra el VHC son el período en el que se producen la mayoría de suspensiones por falta de respuesta virológica. Un mejor conocimiento de los factores basales del paciente y de su correlación con los puntos de decisión en el tratamiento con boceprevir (BOC) pueden ayudar a predecir el éxito de la terapia. MÉTODOS: Estudio observacional retrospectivo para describir el período de lead-in como herramienta de decisión clínica en pacientes con VHC genotipo 1 tratados con BOC. Se recopilaron datos de las historias clínicas de 186 pacientes consecutivos en 20 hospitales generales españoles. RESULTADOS: Se incluyeron 171 pacientes. El 80% tenían fibrosis F3/F4, el 74% habían sido tratados previamente y el 26% eran naïve. Después del lead-in, el 54,5% mostraron una reducción mayor o igual que 1 log10; el 52,5% en aquellos F3/F4. El 94% de pacientes empezaron tratamiento con BOC, las suspensiones del tratamiento en semana 4 se limitaron a pacientes cirróticos con respuesta nula. Algunos factores basales se asociaron a respuesta en semana 4: IL28B, respuesta previa y grado de fibrosis. En semana 8, el 48,8% de los pacientes presentaban ARN-VHC indetectable. La correlación entre las respuestas de las semanas 8 y 12 fue del 88%. CONCLUSIONES: En la práctica clínica en España, el lead-in se utilizó como factor de decisión en pacientes cirróticos no respondedores. La alta correlación entre las reglas de parada en semanas 8 y 12 indica que se podría anticipar la suspensión del tratamiento, evitando así acontecimientos adversos y costes asociados


INTRODUCTION: Most discontinuations due to lack of virological response occur during the first few weeks of hepatitis C virus (HCV) triple therapy. Improved knowledge of baseline factors and their correlation with boceprevir decision points may predict treatment success. METHODS: An observational, retrospective study was conducted to describe the lead-in period as a clinical decision tool in HCV genotype 1 patients treated with boceprevir. Data were collected from the medical records of 186 consecutive patients distributed across 20 Spanish general hospitals. RESULTS: This study included 171 patients. A total of 80% had fibrosis F3/F4, 74% were previously treated, and 26% were treatment-naïve. After the lead-in period, 54.5% of the patients had a reduction of greater than or equal to 1 log10; this reduction occurred in 52.5% of those with advanced fibrosis. Boceprevir therapy was started in 94% of the patients. Discontinuations at week 4 were limited to null responders with cirrhosis. The baseline factors associated with virological response at week 4 were IL28B, previous response, and fibrosis score. At week 8, HCV-RNA was undetectable in 48.8% of the patients. The correlation between responses at weeks 8 and 12 was 88%. CONCLUSION: In the Spanish clinical setting, lead-in was mainly used as a clinical decision point for non-responders with cirrhosis. The good correlation between stopping rules at weeks 8 and 12 could be used to anticipate discontinuation, thus saving adverse events and costs


Subject(s)
Humans , Hepatitis C, Chronic/drug therapy , Antiviral Agents/therapeutic use , Interferons/therapeutic use , Retrospective Studies , Hepacivirus/pathogenicity , Withholding Treatment/statistics & numerical data , Risk Factors , Ribavirin/therapeutic use , Viral Load
4.
Gastroenterol Hepatol ; 38(9): 517-24, 2015 Nov.
Article in Spanish | MEDLINE | ID: mdl-25976446

ABSTRACT

INTRODUCTION: Most discontinuations due to lack of virological response occur during the first few weeks of hepatitis C virus (HCV) triple therapy. Improved knowledge of baseline factors and their correlation with boceprevir decision points may predict treatment success. METHODS: An observational, retrospective study was conducted to describe the lead-in period as a clinical decision tool in HCV genotype 1 patients treated with boceprevir. Data were collected from the medical records of 186 consecutive patients distributed across 20 Spanish general hospitals. RESULTS: This study included 171 patients. A total of 80% had fibrosis F3/F4, 74% were previously treated, and 26% were treatment-naïve. After the lead-in period, 54.5% of the patients had a reduction of ≥1 log10; this reduction occurred in 52.5% of those with advanced fibrosis. Boceprevir therapy was started in 94% of the patients. Discontinuations at week 4 were limited to null responders with cirrhosis. The baseline factors associated with virological response at week 4 were IL28B, previous response, and fibrosis score. At week 8, HCV-RNA was undetectable in 48.8% of the patients. The correlation between responses at weeks 8 and 12 was 88%. CONCLUSION: In the Spanish clinical setting, lead-in was mainly used as a clinical decision point for non-responders with cirrhosis. The good correlation between stopping rules at weeks 8 and 12 could be used to anticipate discontinuation, thus saving adverse events and costs.


Subject(s)
Antiviral Agents/therapeutic use , Drug Monitoring/methods , Hepatitis C, Chronic/drug therapy , Proline/analogs & derivatives , Protease Inhibitors/therapeutic use , Viremia/drug therapy , Antiviral Agents/administration & dosage , Clinical Decision-Making , Drug Therapy, Combination , Female , Humans , Interferon alpha-2 , Interferon-alpha/administration & dosage , Interferon-alpha/therapeutic use , Interferons , Interleukins/genetics , Liver Cirrhosis/drug therapy , Liver Cirrhosis/etiology , Male , Polyethylene Glycols/administration & dosage , Polyethylene Glycols/therapeutic use , Proline/administration & dosage , Proline/therapeutic use , Protease Inhibitors/administration & dosage , RNA, Viral/blood , Recombinant Proteins/administration & dosage , Recombinant Proteins/therapeutic use , Retrospective Studies , Ribavirin/administration & dosage , Ribavirin/therapeutic use , Severity of Illness Index , Spain , Treatment Outcome , Viral Load/drug effects
5.
J Hepatol ; 62(1): 92-100, 2015 Jan.
Article in English | MEDLINE | ID: mdl-25127748

ABSTRACT

BACKGROUND & AIMS: The aim of this study was to evaluate the results of treatment with pegylated interferon and ribavirin for the recurrence of hepatitis C after liver transplantation in HCV/HIV-coinfected patients. METHODS: This was a prospective, multicentre cohort study, including 78 HCV/HIV-coinfected liver transplant patients who received treatment for recurrent hepatitis C. For comparison, we included 176 matched HCV-monoinfected patients who underwent liver transplantation during the same period of time at the same centres and were treated for recurrent hepatitis C. RESULTS: Antiviral therapy was discontinued prematurely in 56% and 39% (p = 0.016), mainly because of toxicity (22% and 11%, respectively; p=0.034). Sustained virological response (SVR) was achieved in 21% of the coinfected patients and in 36% of monoinfected patients (p = 0.013). For genotype 1, SVR rates were 10% and 33% (p = 0.002), respectively; no significant differences were observed for the other genotypes. A multivariate analysis based on the whole series identified HIV-coinfection as an independent predictor of lack of SVR (OR, 0.17; 95% CI, 0.06-0.42). Other predictors of SVR were donor age, pretreatment HCV viral load, HCV genotype, and early virological response. SVR was associated with a significant improvement in survival: 5-year survival after antiviral treatment was 79% for HCV/HIV-coinfected patients with SVR vs. 43% for those without (p = 0.02) and 92% vs. 60% in HCV-monoinfected patients (p < 0.001), respectively. CONCLUSIONS: The response to pegylated interferon and ribavirin was poorer in HCV/HIV-coinfected liver recipients, particularly those with genotype 1. However, when SVR was achieved, survival of coinfected patients increased significantly.


Subject(s)
HIV Infections/drug therapy , Hepatitis C, Chronic/drug therapy , Interferon-alpha/administration & dosage , Liver Transplantation , Polyethylene Glycols/administration & dosage , Ribavirin/administration & dosage , Adult , Antiviral Agents/administration & dosage , Coinfection , Drug Carriers , Drug Therapy, Combination , Female , Follow-Up Studies , HIV/genetics , HIV Infections/virology , Hepacivirus/genetics , Hepatitis C, Chronic/virology , Humans , Male , Middle Aged , Prospective Studies , RNA, Viral/genetics , Recombinant Proteins/administration & dosage , Recurrence , Treatment Outcome , Viral Load
6.
Liver Int ; 35(1): 90-100, 2015 Jan.
Article in English | MEDLINE | ID: mdl-25113158

ABSTRACT

BACKGROUND & AIMS: The addition of protease inhibitors (PIs) changed the hepatitis C virus (HCV) treatment standards and improved sustained viral response (SVR) rates in patients with genotype 1 HCV infection. METHODS: Prospective, multicentre, national registry that includes naïve and treatment-experienced patients with HCV genotype 1 infection, who had bridging fibrosis or cirrhosis and were treated with triple therapy (peginterferon alfa-2a or alfa-2b, ribavirin and boceprevir) as compassionate use, and in accordance with the Summary of Product Characteristics. RESULTS: Most of the patients (68.2%) were male, with a mean age of 53 years, 75% (n = 128) had HCV 1b genotype and baseline viral load of 6.2 log. According to prior treatment, 20% of patients were treatment-naïve and 80% had received prior treatment. Approximately 36.5% of patients (n = 62) reported at least one serious adverse events (SAEs) (total SAEs = 103). The most common SAEs were neutropenia (57.6%), anaemia (47.6%) and grade 3 thrombopenia (25.9%). Patients with albumin <3.5 g/dl and bilirubin >2 mg/dl had an increased relative risk (greater than one-fold) for SAEs, including infections and hepatic decompensation. In the intent-to-treat analysis (n = 170), the overall percentage of patients with SVRw12 was 46.5%. In patients with 1 log decrease at week 4 (lead-in phase), the overall SVRw12 rate was 67.0%. In the patients initiating triple therapy with boceprevir (n = 139), the global response rate was 56.4%. In a multivariate analysis, an increased probability of achieving SVR was associated with response to prior treatment (relapsers), >1 log decrease in viral load in the lead-in phase and baseline albumin >3.5 g/dl. CONCLUSIONS: Triple therapy in patients with severe fibrosis/cirrhosis is associated with a higher rate of SAE and a lower rate in comparison with patients with mild disease. However, for patients with intact liver function, it could be considered as a treatment option, when other alternatives would not be available.


Subject(s)
Hepacivirus/genetics , Hepatitis C/drug therapy , Interferon-alpha/therapeutic use , Liver Cirrhosis/drug therapy , Polyethylene Glycols/therapeutic use , Proline/analogs & derivatives , Protease Inhibitors/therapeutic use , Ribavirin/therapeutic use , Compassionate Use Trials , Drug Therapy, Combination/adverse effects , Hepatitis C/complications , Hepatitis C/genetics , Humans , Interferon-alpha/adverse effects , Liver Cirrhosis/etiology , Male , Middle Aged , Polyethylene Glycols/adverse effects , Proline/adverse effects , Proline/therapeutic use , Prospective Studies , Protease Inhibitors/adverse effects , Recombinant Proteins/adverse effects , Recombinant Proteins/therapeutic use , Ribavirin/adverse effects , Spain
7.
J. physiol. biochem ; 70(3): 821-835, sept. 2014. tab
Article in English | IBECS | ID: ibc-127326

ABSTRACT

Electroencephalographic recordings in cirrhotic patients without overt hepatic encephalopathy (HE) have mainly been performed during wakefulness. Our aim was to quantify their alterations in nocturnal sleep electroencephalogram (EEG). In 20 patients and 20 healthy volunteers, we recorded a nocturnal digital polysomnography. Different sleep parameters were measured. Besides, we performed quantitative analysis of EEG (qEEG) as follows: spectral power in the different sleep stages was calculated in the frequency bands low δ, δ, θ, α, and σ. Also, the mean dominant frequency and Sleep Indexes were obtained. In comparison with controls, the group of patients showed (1) different alterations in both the microstructure and the macrostructure of sleep; (2) an increase in, both, θ band power and the average mean dominant frequency during rapid eye movement (REM); (3) in all sleep stages, a decrease of sleep electroencephalogram spectral power in low δ band and an increase in δ band: and (4) in stages N3 and REM, significant increases in the minimum of mean dominant frequency and in the respective sleep indexes. Therefore, in cirrhotic patients without overt HE, and likely having minimal hepatic encephalopathy, we found different alterations in both the microstructure and the macrostructure of nocturnal sleep. Also, sleep qEEG showed a brain dysfunction in slow oscillatory mechanisms intrinsic of sleep stages, with an increase in the frequency of its maximal electroencephalogram synchronization, from low δ to δ band. These alterations may reflect the onset of encephalopathy; sleep qEEG may, thus, be an adequate tool for its brain functional evaluation and follow-up


Subject(s)
Humans , Electroencephalography/methods , Electroencephalography Phase Synchronization , Hepatic Encephalopathy/diagnosis , Oscillometry , Sleep Stages/physiology , Liver Cirrhosis/physiopathology
8.
Gastroenterol Hepatol ; 37 Suppl 2: 43-50, 2014 Jul.
Article in Spanish | MEDLINE | ID: mdl-25087711

ABSTRACT

In Spain, the rate of anti-HBc positive, HBsAg-negative carriers is approximately 10% of adults between the ages of 26 and 65 years. It is therefore impossible to exclude these donors without increasing the mortality of recipients on waiting lists. The incidence of de novo hepatitis B infection in HBsAg-negative recipients of anti-HBc-positive donors is high without prophylaxis and is related to the serological state of the recipient against HBV. Anti-HBc and anti-HBs-positive recipients have low risk, with or without prophylaxis. This patient group therefore does not require prophylaxis but rather periodic posttransplantation checkups. For the other recipient groups (naïve, anti-Hbc and anti-HBs isolates), prophylaxis with IgG HB, lamivudine or combined therapy decreases the incidence of infection. These patients should be treated with prophylaxis immediately after transplantation. Depending on the risk, cost and benefit, patients should currently be treated with lamivudine 100mg/d indefinitely or for longer periods (>10 years). Periodic checkups of HBsAg should be conducted, and if there is graft dysfunction then HBV DNA should be checked. IF HBV DNA is discovered in the donor and found to be positive in serum or in the biopsy, the prophylaxis should be an analogue with a high barrier to resistance from the start. Grafts from anti-HBc-positive donors are not considered at-risk grafts and are used according to donor severity, without being determined by the recipient's serological profile.


Subject(s)
Hepatitis B Core Antigens/blood , Hepatitis B, Chronic/transmission , Liver Transplantation/adverse effects , Hepatitis B, Chronic/prevention & control , Humans , Immunoglobulin G/therapeutic use , Lamivudine/therapeutic use , Tissue Donors
9.
J Physiol Biochem ; 70(3): 821-35, 2014 Sep.
Article in English | MEDLINE | ID: mdl-25074827

ABSTRACT

Electroencephalographic recordings in cirrhotic patients without overt hepatic encephalopathy (HE) have mainly been performed during wakefulness. Our aim was to quantify their alterations in nocturnal sleep electroencephalogram (EEG). In 20 patients and 20 healthy volunteers, we recorded a nocturnal digital polysomnography. Different sleep parameters were measured. Besides, we performed quantitative analysis of EEG (qEEG) as follows: spectral power in the different sleep stages was calculated in the frequency bands low δ, δ, θ, α, and σ. Also, the mean dominant frequency and Sleep Indexes were obtained. In comparison with controls, the group of patients showed (1) different alterations in both the microstructure and the macrostructure of sleep; (2) an increase in, both, θ band power and the average mean dominant frequency during rapid eye movement (REM); (3) in all sleep stages, a decrease of sleep electroencephalogram spectral power in low δ band and an increase in δ band: and (4) in stages N3 and REM, significant increases in the minimum of mean dominant frequency and in the respective sleep indexes. Therefore, in cirrhotic patients without overt HE, and likely having minimal hepatic encephalopathy, we found different alterations in both the microstructure and the macrostructure of nocturnal sleep. Also, sleep qEEG showed a brain dysfunction in slow oscillatory mechanisms intrinsic of sleep stages, with an increase in the frequency of its maximal electroencephalogram synchronization, from low δ to δ band. These alterations may reflect the onset of encephalopathy; sleep qEEG may, thus, be an adequate tool for its brain functional evaluation and follow-up.


Subject(s)
Brain/physiopathology , Hepatic Encephalopathy/physiopathology , Aged , Case-Control Studies , Electroencephalography , Female , Hepatic Encephalopathy/diagnosis , Hepatic Encephalopathy/etiology , Humans , Liver Cirrhosis/complications , Liver Cirrhosis/physiopathology , Male , Middle Aged , Polysomnography , Sleep Stages/physiology , Sleep, REM/physiology
10.
Gastroenterol. hepatol. (Ed. impr.) ; 37(supl.2): 43-50, jul. 2014. tab
Article in Spanish | IBECS | ID: ibc-137581

ABSTRACT

En España, la tasa de portadores anti-HBc positivos, HBsAg negativos es cercana al 10% de los adultos entre 26 y 65 años, por lo que es imposible excluir a estos donantes sin aumento de la mortalidad de los receptores en lista de espera. La incidencia de hepatitis B de novo en receptores HBsAg negativos de donantes anti-HBc positivos es alta sin profilaxis y está en relación con el estado serológico del receptor frente al VHB. Los receptores con anti-HBc y anti-HBs positivos tienen un bajo riesgo, con y sin profilaxis, por lo que este grupo de pacientes no precisaría profilaxis, sino controles periódicos postrasplante. En el resto de los grupos de receptores (naïve, anti-Hbc o anti-HBs aislados) la profilaxis con IgG HB, lamivudina o terapia combinada disminuye la incidencia y deben recibir profilaxis inmediata desde el postrasplante. En el momento actual, y en función del riesgo, beneficio y coste, debería ser con lamivudina 100 mg/d indefinidamente o por largos períodos (> 10 años). Se debería controlar el HBsAg periódicamente y siempre el ADN del VHB en caso de disfunción del injerto. Si se determina el ADN del VHB en el donante y es positivo en suero o en biopsia, la profilaxis sería desde el inicio con un análogo de alta barrera a resistencia. Los injertos de donantes anti-HBc positivos no se considerarán injertos de riesgo y se utilizarán en función de la gravedad del donante, sin estar determinados por el perfil serológico del receptor


In Spain, the rate of anti-HBc positive, HBsAg-negative carriers is approximately 10% of adults between the ages of 26 and 65 years. It is therefore impossible to exclude these donors without increasing the mortality of recipients on waiting lists. The incidence of de novo hepatitis B infection in HBsAg-negative recipients of anti-HBc-positive donors is high without prophylaxis and is related to the serological state of the recipient against HBV. Anti-HBc and anti-HBs-positive recipients have low risk, with or without prophylaxis. This patient group therefore does not require prophylaxis but rather periodic posttransplantation checkups. For the other recipient groups (naïve, anti-Hbc and anti-HBs isolates), prophylaxis with IgG HB, lamivudine or combined therapy decreases the incidence of infection. These patients should be treated with prophylaxis immediately after transplantation. Depending on the risk, cost and benefit, patients should currently be treated with lamivudine 100 mg/d indefinitely or for longer periods (>10 years). Periodic checkups of HBsAg should be conducted, and if there is graft dysfunction then HBV DNA should be checked. IF HBV DNA is discovered in the donor and found to be positive in serum or in the biopsy, the prophylaxis should be an analogue with a high barrier to resistance from the start. Grafts from anti-HBc-positive donors are not considered at-risk grafts and are used according to donor severity, without being determined by the recipient’s serological profile


Subject(s)
Adult , Female , Humans , Male , Hepatitis B/diagnosis , Hepatitis B/prevention & control , Hepatitis B/therapy , Transplantation/trends , Hepatitis B Antibodies/analysis , Hepatitis B Surface Antigens/analysis
11.
J Hepatol ; 61(5): 1020-8, 2014 Nov.
Article in English | MEDLINE | ID: mdl-24905493

ABSTRACT

BACKGROUND & AIMS: There is an increasing discrepancy between the number of potential liver graft recipients and the number of organs available. Organ allocation should follow the concept of benefit of survival, avoiding human-innate subjectivity. The aim of this study is to use artificial-neural-networks (ANNs) for donor-recipient (D-R) matching in liver transplantation (LT) and to compare its accuracy with validated scores (MELD, D-MELD, DRI, P-SOFT, SOFT, and BAR) of graft survival. METHODS: 64 donor and recipient variables from a set of 1003 LTs from a multicenter study including 11 Spanish centres were included. For each D-R pair, common statistics (simple and multiple regression models) and ANN formulae for two non-complementary probability-models of 3-month graft-survival and -loss were calculated: a positive-survival (NN-CCR) and a negative-loss (NN-MS) model. The NN models were obtained by using the Neural Net Evolutionary Programming (NNEP) algorithm. Additionally, receiver-operating-curves (ROC) were performed to validate ANNs against other scores. RESULTS: Optimal results for NN-CCR and NN-MS models were obtained, with the best performance in predicting the probability of graft-survival (90.79%) and -loss (71.42%) for each D-R pair, significantly improving results from multiple regressions. ROC curves for 3-months graft-survival and -loss predictions were significantly more accurate for ANN than for other scores in both NN-CCR (AUROC-ANN=0.80 vs. -MELD=0.50; -D-MELD=0.54; -P-SOFT=0.54; -SOFT=0.55; -BAR=0.67 and -DRI=0.42) and NN-MS (AUROC-ANN=0.82 vs. -MELD=0.41; -D-MELD=0.47; -P-SOFT=0.43; -SOFT=0.57, -BAR=0.61 and -DRI=0.48). CONCLUSIONS: ANNs may be considered a powerful decision-making technology for this dataset, optimizing the principles of justice, efficiency and equity. This may be a useful tool for predicting the 3-month outcome and a potential research area for future D-R matching models.


Subject(s)
Artificial Intelligence , Liver Transplantation/statistics & numerical data , Tissue Donors , Adolescent , Adult , Aged , Algorithms , Decision Making, Computer-Assisted , Female , Graft Survival , Humans , Male , Middle Aged , Models, Statistical , Multivariate Analysis , Neural Networks, Computer , Prognosis , Spain , Transplant Recipients , Young Adult
12.
Gastroenterol. hepatol. (Ed. impr.) ; 37(1): 1-8, ene. 2014. ilus, tab
Article in English | IBECS | ID: ibc-118349

ABSTRACT

INTRODUCTION: Less than half of patients with chronic hepatitis C genotype 3 (G3) and high viral load (HVL) without a rapid virological response (RVR) achieve a sustained virological response (SVR) when treated with peginterferon plus ribavirin (RBV).Objectives To assess the impact of high doses of RBV on SVR in patients with G3 and HVL. Methods Ninety-seven patients were randomized to receive peginterferon α-2a+RBV 800mg/day (A; n = 42) or peginterferon α-2a+RBV 1600mg/day+epoetin β 400IU/kg/week SC (B; n = 55). Patients allocated to group B who achieved RVR continued on RBV (800mg/day) for a further 20 weeks (B1; n = 42) while non-RVR patients received a higher dose of RBV (1600mg/day) + epoetin β (B2; n = 13). RESULTS: RVR was observed in 64.3% of patients in A and in 76.4% in B (p = 0.259). Intention-to-treat (ITT) analysis showed SVR rates of 64.3% (A) and 61.8% (B), with a reduction of -2.5% (-21.8% to 16.9%) (p = 0.835). The SVR rate was 61.9% in arm B1 and 61.5% in arm B2. No serious adverse events were reported, and the rate of moderate adverse events was < 5%. CONCLUSIONS: G3 patients with high viral load without RVR did not obtain a benefit from a higher dose of RBV. Higher doses of RBV plus epoetin β were safe and well tolerated (Clin Trials Gov NCT00830609)


INTRODUCCIÓN: Menos de la mitad de los pacientes con hepatitis crónica C genotipo 3 (G3) con carga viral elevada y sin respuesta virológica rápida (RVR) alcanzan respuesta virológica sostenida (RVS) con peginterferón y ribavirina (RBV). OBJETIVOS: Evaluar el impacto de altas dosis de RBV sobre la RVS en pacientes con G3 y cargaviral elevada. MÉTODOS: Noventa y siete pacientes recibieron asignación aleatoria para tratamiento con peginterferón α-2a+RBV800mg/día (A; n=42) o peginterferón α-2ª + RBV 1600 mg/día + epoetina β 400UI/kg/semana SC (B; n = 55). Los pacientes asignados al grupo B que alcanzaron RVR continuaron con RBV (800 mg/día) durante 20 semanas más (B1; n = 42) mientras que los que no alcanzaron RVR recibieron una dosis más alta de RBV (1.600 mg/día)+epoetina β (B2; n = 13). RESULTADOS: Se observó RVR en el 64,3% de los pacientes en A y 76,4% en B (p = 0,259). El análisis por intención de tratar(ITT) mostró una tasa de RVS de 64,3% (A) y 61,8% (B), con una reducción de -2,5% (-21,8-16.9%) (p = 0,835). La tasa de RVS fue 61,9% en brazo B1 y 61,5% en brazo B2. No se detectaron efectos adversos graves y la tasa de efectos adversos moderados fue <5%. CONCLUSIONES: Los pacientes G3 con carga viral elevada sin RVR no obtuvieron beneficio de dosis más altas de RBV. Las dosis más altas de ribavirina más epoetina β fueron seguras y bien toleradas. (Clin Trials Gov NCT00830609)


Subject(s)
Humans , Ribavirin/therapeutic use , Interferon-alpha/therapeutic use , Hepatitis C, Chronic/drug therapy , Viral Load , Randomized Controlled Trials as Topic
13.
Gastroenterol Hepatol ; 37(1): 1-8, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24360571

ABSTRACT

INTRODUCTION: Less than half of patients with chronic hepatitis C genotype 3 (G3) and high viral load (HVL) without a rapid virological response (RVR) achieve a sustained virological response (SVR) when treated with peginterferon plus ribavirin (RBV). OBJECTIVES: To assess the impact of high doses of RBV on SVR in patients with G3 and HVL. METHODS: Ninety-seven patients were randomized to receive peginterferon α-2a+RBV 800 mg/day (A; n=42) or peginterferon α-2a+RBV 1600 mg/day+epoetin ß 400 IU/kg/week SC (B; n=55). Patients allocated to group B who achieved RVR continued on RBV (800mg/day) for a further 20 weeks (B1; n=42) while non-RVR patients received a higher dose of RBV (1600 mg/day)+epoetin ß (B2; n=13). RESULTS: RVR was observed in 64.3% of patients in A and in 76.4% in B (p=0.259). Intention-to-treat (ITT) analysis showed SVR rates of 64.3% (A) and 61.8% (B), with a reduction of -2.5% (-21.8% to 16.9%) (p=0.835). The SVR rate was 61.9% in arm B1 and 61.5% in arm B2. No serious adverse events were reported, and the rate of moderate adverse events was < 5%. CONCLUSIONS: G3 patients with high viral load without RVR did not obtain a benefit from a higher dose of RBV. Higher doses of RBV plus epoetin ß were safe and well tolerated (Clin Trials Gov NCT00830609).


Subject(s)
Antiviral Agents/administration & dosage , Hepatitis C, Chronic/drug therapy , Interferon-alpha/administration & dosage , Polyethylene Glycols/administration & dosage , Ribavirin/administration & dosage , Adult , Aged , Aged, 80 and over , Antiviral Agents/therapeutic use , Dose-Response Relationship, Drug , Drug Therapy, Combination , Erythropoietin/administration & dosage , Erythropoietin/therapeutic use , Female , Genotype , Hepacivirus/classification , Hepacivirus/genetics , Hepacivirus/isolation & purification , Hepatitis C, Chronic/blood , Hepatitis C, Chronic/virology , Humans , Interferon-alpha/therapeutic use , Male , Middle Aged , Polyethylene Glycols/therapeutic use , Recombinant Proteins/administration & dosage , Recombinant Proteins/therapeutic use , Ribavirin/therapeutic use , Treatment Outcome , Viral Load , Viremia/blood , Viremia/drug therapy , Viremia/virology
14.
J Hepatol ; 58(3): 421-6, 2013 Mar.
Article in English | MEDLINE | ID: mdl-23073223

ABSTRACT

BACKGROUND & AIMS: Reinfection of the graft is the rule in patients with HCV cirrhosis undergoing liver transplantation, and HCV-RNA reaches pre-transplantation levels within the first month. Short-term intravenous silibinin monotherapy is safe and shows a potent in vivo anti-HCV effect. We aimed at evaluating the safety and antiviral effect of prolonged intravenous silibinin, started immediately before liver transplantation. METHODS: Single centre, prospective, pilot study, to assess the safety and effect on HCV-RNA kinetics during at least 21 days of intravenous silibinin monotherapy (20 mg/kg/day) in 9 consecutive HCV genotype 1 subjects, in comparison to a control, non-treated group of 7 consecutive prior transplanted subjects under the same immunosuppressive regimen (basiliximab, steroids, delayed tacrolimus, micophenolate). RESULTS: Intravenous silibinin led to significant, maintained and progressive HCV-RNA decreases (mean HCV-RNA drop at week 3, -4.1 ± 1.3 log(10)IU/ml), and lack of viral breakthrough during administration. Four patients (44%) reached negative HCV-RNA, maintained during silibinin treatment, vs. none in the control group, but HCV-RNA relapsed in all of them after a median of 21 days (16-28), following silibinin withdrawal. Partial responders to silibinin showed marked decreases in HCV-RNA when compared to controls, but lower than complete responders. There were no clinical adverse effects, and silibinin led to asymptomatic transient hyperbilirubinemia (week 2, 4.2 ± 2.2 vs. 2.5 ± 3.6 mg/dl; p=0.02). CONCLUSIONS: Prolonged intravenous silibinin monotherapy was safe in the immediate liver transplantation period, leading to a potent and time dependent antiviral effect and lack of HCV-RNA breakthrough during administration. However, HCV-RNA rebounded after withdrawal, and silibinin monotherapy did not avoid reinfection of the graft.


Subject(s)
Antiviral Agents/pharmacology , Hepacivirus/drug effects , Liver Transplantation , Silymarin/pharmacology , Female , Genotype , Hepacivirus/classification , Humans , Male , Middle Aged , Pilot Projects , Prospective Studies , RNA, Viral/analysis , Silybin , Silymarin/adverse effects
15.
J Acquir Immune Defic Syndr ; 61(3): e47-9, 2012 Nov 01.
Article in English | MEDLINE | ID: mdl-23095936

Subject(s)
Antiretroviral Therapy, Highly Active/methods , Antiviral Agents/therapeutic use , HIV Infections/drug therapy , HIV Integrase Inhibitors/therapeutic use , HIV Protease Inhibitors/therapeutic use , Hepatitis C/drug therapy , Liver Cirrhosis/complications , Oligopeptides/therapeutic use , Proline/analogs & derivatives , Pyrrolidinones/therapeutic use , Antiretroviral Therapy, Highly Active/adverse effects , Antiviral Agents/administration & dosage , Antiviral Agents/adverse effects , Coinfection/drug therapy , Drug Therapy, Combination/adverse effects , Drug Therapy, Combination/methods , Female , HIV Infections/complications , HIV Integrase Inhibitors/administration & dosage , HIV Integrase Inhibitors/adverse effects , HIV Protease Inhibitors/administration & dosage , HIV Protease Inhibitors/adverse effects , Hepatitis C/complications , Humans , Interferon-alpha/administration & dosage , Interferon-alpha/adverse effects , Interferon-alpha/therapeutic use , Liver Cirrhosis/virology , Male , Middle Aged , Oligopeptides/administration & dosage , Oligopeptides/adverse effects , Polyethylene Glycols/administration & dosage , Polyethylene Glycols/adverse effects , Polyethylene Glycols/therapeutic use , Proline/administration & dosage , Proline/adverse effects , Proline/therapeutic use , Pyrrolidinones/administration & dosage , Pyrrolidinones/adverse effects , Raltegravir Potassium , Recombinant Proteins/administration & dosage , Recombinant Proteins/adverse effects , Recombinant Proteins/therapeutic use , Ribavirin/administration & dosage , Ribavirin/adverse effects , Ribavirin/therapeutic use
16.
Rev Esp Enferm Dig ; 104(1): 21-8, 2012 Feb.
Article in English, Spanish | MEDLINE | ID: mdl-22300113

ABSTRACT

BACKGROUND AND AIMS: The management of acute hepatitis C (AHC) is controversial. We have conducted a retrospective study to determine the epidemiological and biochemical aspects, the genotypes, the spontaneous clearance of HCV (SVC), and the treatment responses in patients with AHC. METHODS: We have retrospectively collected data from 131 patients with AHC from 18 Spanish hospitals. RESULTS: The mean age was 43 ± 16 years (17-83), 69% were symptomatic. The causes of infection were nosocomial in 40% and intravenous drug users in 20%. Eighty two percent had genotype 1. The delay from symptoms-onset to HCV-RNA confirmation was 50 ± 68 days (range, 11-350 days) and to treatment (in 59%) 14±1 3 weeks (range, 2-58 days). In the treated group, 80% achieved sustained virological response (SVR) versus 57% SVC in untreated patients (p = 0.004). Up to 96% of those treated within the first 12 weeks had SVR versus 86% of those treated later (p = 0.04). Patients with HCV-RNA(-) at week 4 resolved with or without treatment more frequently than those HCV-RNA(+) (98% versus 69%, p = 0.005). The treatment was not beneficial if HCV-RNA was undetectable at week 12. No differences in SVR were found in genotype 1 patients treated for 24 or 48 weeks. Patients with low baseline viral load achieved higher SVC and SVR. The SVC in patients with bilirubin > 5 mg/dL was 78 versus 40% in those with lower values (p = 0.004). CONCLUSIONS: The most common transmission route was nosocomial. SVR was higher in patients treated than SVC in non-treated.Early treatment (before week 12) achieved the highest response rate. SVC and SVR were more common in patients with a low baseline viral load. Undetectable HCV-RNA at week 4 was associated with high SVR and SVC rates. Jaundice was related with SVC.


Subject(s)
Hepatitis C/epidemiology , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Antibodies, Viral/analysis , Antiviral Agents/therapeutic use , Cohort Studies , Cross Infection/complications , Cross Infection/therapy , Female , Genotype , Hepacivirus/immunology , Hepatitis C/therapy , Hepatitis C/virology , Humans , Immunoenzyme Techniques , Immunoglobulin G/analysis , Interferon-gamma/therapeutic use , Liver Function Tests , Male , Middle Aged , RNA, Viral/blood , Retrospective Studies , Ribavirin/therapeutic use , Spain/epidemiology , Substance Abuse, Intravenous/epidemiology , Viral Load , Young Adult
17.
Rev. esp. enferm. dig ; 104(1): 21-28, ene. 2012. tab
Article in Spanish | IBECS | ID: ibc-95762

ABSTRACT

Introducción y objetivos: el manejo de la hepatitis aguda C (HAC) es objeto de controversia. Hemos realizado un estudio prospectivo para conocer los aspectos epidemiológicos, bioquímicos, los genotipos, el aclaramiento espontáneo del VHC (SVC) y la respuesta al tratamiento en una serie de pacientes con HAC. Métodos: hemos analizado los datos retrospectivos de 131 pacientes con HAC de 18 hospitales españoles. Resultados: la edad media fue de 43 ± 16 años (17-83). El 69% tenían síntomas. Las causas de la infección fueron nosocomial en el 40% y CDVP en el 20%. El genotipo 1 se halló en el 82%. El retraso desde el comienzo de los síntomas hasta la confirmación del ARN-VHC fue de 50 ± 68 días (11-350) y hasta el tratamiento (en el 59% de los casos), de 14 ± 13 semanas (2-58). En el grupo tratado el 80% alcanzaron RVS frente al 57% de SVC en el grupo no tratado (p = 0,004). El 96% de los que recibieron tratamiento dentro de las primeras 12 semanas tuvieron RVS frente al 86% de los que se trataron más tarde (p = 0,04). Los pacientes con RNAVHC indetectable en la semana 4 resolvieron la infección, con o sin tratamiento, con mayor frecuencia que los que persistían con ARN-VHC + (98 vs. 69%, p = 0,005). El tratamiento no resultó beneficioso en los pacientes con ARN-VHC indetectable en la semana 12. No hubo diferencias en la RVS en los pacientes con Gt 1 tratados 24 ó 48 semanas. Los pacientes con carga viral basal baja lograron mayores RVS y SVC. El SVC en aquellos con bilirrubina > 5 mg/dl fue del 78 vs. 40% en los que tenían valores más bajos (p = 0,004). Conclusiones: la vía de contagio más frecuente fue la nosocomial. La RVS fue mayor en pacientes tratados que la SVC en no tratados. El tratamiento precoz (antes de la semana 12) logró la mayor tasa de respuestas. El SVC y la RVS fueron más frecuentes en los que tenían una carga viral basal más baja. El ARN-VHC indetectable en la semana 4 se asoció con mayor frecuencia de SVC y de RVS. La ictericia se relacionó con el SVC(AU)


Background and aims: the management of acute hepatitis C (AHC) is controversial. We have conducted a retrospective study to determine the epidemiological and biochemical aspects, the genotypes, the spontaneous clearance of HCV (SVC), and the treatment responses in patients with AHC. Methods: we have retrospectively collected data from 131 patients with AHC from 18 Spanish hospitals. Results: the mean age was 43 ± 16 years (17-83), 69% were symptomatic. The causes of infection were nosocomial in 40% and intravenous drug users in 20%. Eighty two percent had genotype 1. The delay from symptoms-onset to HCV-RNA confirmation was 50 ± 68 days (range, 11-350 days) and to treatment (in 59%) 14 ±13 weeks (range, 2-58 days). In the treated group, 80% achieved sustained virological response (SVR) versus 57% SVC in untreated patients (p = 0.004). Up to 96% of those treated within the first 12 weeks had SVR versus 86% of those treated later (p = 0.04). Patients with HCV-RNA(-) at week 4 resolved with or without treatment more frequently than those HCV-RNA(+) (98 versus 69%, p = 0.005). The treatment was not beneficial if HCV-RNA was undetectable at week 12. No differences in SVR were found in genotype 1 patients treated for 24 or 48 weeks. Patients with low baseline viral load achieved higher SVC and SVR. The SVC in patients with bilirubin > 5 mg/dl was 78 versus 40% in those with lower values (p = 0.004). Conclusions: the most common transmission route was nosocomial. SVR was higher in patients treated than SVC in non-treated. Early treatment (before week 12) achieved the highest response rate. SVC and SVR were more common in patients with a low baseline viral load. Undetectable HCV-RNA at week 4 was associated with high SVR and SVC rates. Jaundice was related with SVC(AU)


Subject(s)
Adult , Middle Aged , Aged , Aged, 80 and over , Humans , Hepatitis C/epidemiology , Cross Infection/complications , Cross Infection/epidemiology , Jaundice/complications , Hepatitis C/prevention & control , Hepatitis C/physiopathology , Retrospective Studies , Spain/epidemiology , Multivariate Analysis
18.
Liver Transpl ; 17(3): 331-3, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21384516

ABSTRACT

Statins are relatively safe first-line agents to use in the setting of dyslipidemia associated with immunosuppressive therapy in subjects undergoing liver transplantation, and also in HIV-infected patients with dyslipidemia due to antiretroviral drugs, especially ritonavir-boosted protease inhibitors. Rosuvastatin, a new statin, has demonstrated higher potency than previously released statins and is not extensively metabolized by the liver P450 system; therefore, the probability of deleterious pharmacokinetic interactions with commonly used immunosuppressants and antiretroviral drugs is reduced. We present the first case of severe rhabdomyolysis in a liver transplant patient receiving rosuvastatin for the treatment of immunosuppressive therapy-related grade IV dyslipidemia, an HIV-infected subject on protease inhibitor-sparing HAART, that resolved after rosuvastatin withdrawal, probably related to interactions between calcineurin inhibitors and hepatic rosuvastatin uptake transporters such as organic anion transporting polypeptides (OATPs).


Subject(s)
Dyslipidemias/drug therapy , Fluorobenzenes/adverse effects , HIV Infections/complications , Hydroxymethylglutaryl-CoA Reductase Inhibitors/adverse effects , Immunosuppressive Agents/adverse effects , Liver Transplantation , Pyrimidines/adverse effects , Rhabdomyolysis/chemically induced , Sulfonamides/adverse effects , Adult , Antiretroviral Therapy, Highly Active , Dyslipidemias/chemically induced , HIV Infections/drug therapy , Humans , Male , Rhabdomyolysis/diagnosis , Rosuvastatin Calcium , Severity of Illness Index
19.
Am J Gastroenterol ; 105(10): 2164-72; quiz 2173, 2010 Oct.
Article in English | MEDLINE | ID: mdl-20700116

ABSTRACT

OBJECTIVES: Patients with hepatitis C virus (HCV) cirrhosis are difficult to treat and have a high risk of liver decompensation or hepatocellular carcinoma. We sought to identify factors that could predict treatment response. METHODS: Collaborating centers (n=26) provided data for patients (n=568) with HCV cirrhosis undergoing treatment with peginterferon-α plus ribavirin (RBV). Univariate and multivariate analyses were used to evaluate factors predicting treatment outcomes. RESULTS: Sustained viral response (SVR) in naive patients was 30.7%, with no significant differences between centers. Median follow-up was 35 months (range: 1-81). Factors predicting SVR were: non-genotype 1 (odds ratio (OR)=4.183; 95% confidence interval (CI): 2.353-7.438) overall dose and ≥80% of the scheduled time of treatment (OR=3.177; 95% CI: 1.752-5.760); serum γ-glutamyl transpeptidase (GGT) <76 IU per ml (OR=4.092; 95% CI: 2.418-6.927); baseline viral load <6 × 10(5) (OR=2.597; 95% CI: 1.583-4.262); absence of ultrasound signs of portal hypertension (OR=2.067; 95% CI: 1.26-3.39). No patient with a HCV-RNA decline <1 log(10) at week 4 achieved SVR. Event-free survival at 5 years was 91% in patients with SVR vs. 59% in non-responders (P<0.001). Overall survival in patients with SVR was 98% vs. 86% in non-responders (P=0.005). Independent factors predicting events were absence of SVR (hazard ratio (HR)=2.66; 95% CI: 1.32-5.54), baseline serum albumin <3.9 g per 100 ml (HR=3.06; 95% CI: 1.81-5.15), presence of esophageal varices on endoscopy (HR=2.489; 95% CI: 1.546-4). Improved outcome was more evident in responders with less advanced disease at baseline. CONCLUSIONS: SVR can be achieved in approximately one-third of patients with HCV-related cirrhosis. SVR independently reduces the likelihood of clinical decompensation and improves survival.


Subject(s)
Hepatitis C/drug therapy , Interferon-alpha/therapeutic use , Liver Cirrhosis/drug therapy , Polyethylene Glycols/therapeutic use , Ribavirin/therapeutic use , Antiviral Agents/therapeutic use , Cohort Studies , Female , Genotype , Hepacivirus/genetics , Hepatitis C/complications , Hepatitis C/genetics , Humans , Intention to Treat Analysis , Interferon alpha-2 , Liver Cirrhosis/complications , Liver Cirrhosis/genetics , Male , Middle Aged , Odds Ratio , Recombinant Proteins , Retrospective Studies , Treatment Outcome , Viral Load
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