Made available in DSpace on 2015-07-22T20:50:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-09-29 / Objetivo: investigar a participação da imunidade inata, através da análise de expressão dos genes TLR4 e MYD88, na disfunção precoce do enxerto renal em humanos. Métodos: A quantificação do mRNA foi realizada por PCR em tempo real, em biópsias pré-implantação do enxerto, na urina e no sangue (leucócitos) do primeiro dia póstransplante, em 75 transplantes (TX) com doador falecido (DF) e 18 transplantes com doador vivo (DV). Os desfechos considerados foram DGF (delayed graft function) e retardo na recuperação da função renal, independentemente de necessidade de diálise. Resultados: Em biópsias, os níveis de expressão de TLR4 e MyD88 foram maiores em rins de DF do que de DV; mas não se correlacionaram com disfunção precoce do enxerto; na urina, não diferiram entre DF e DV, e tenderam a ser mais elevados em casos de TX-DF com disfunção precoce do enxerto; no sangue, não diferiram entre DF e DV e foram mais baixos em casos com disfunção precoce. Conclusão: os resultados sugerem uma participação de TLR4 e MYD88 na patogenia das alterações que ocorrem em rins de DF e que baixos níveis de expressão gênica de TLR4 e MYD88, mensurados em amostra de leucócitos do sangue periférico colhida nas primeiras 24 horas pós-transplante, podem predizer retardo na recuperação da função do enxerto e, portanto, poderão vir a ter utilidade clínica no tratamento de receptores de transplante renal de doador falecido. / TEDE / BV UNIFESP: Teses e dissertações

Made available in DSpace on 2016-12-23T13:56:14Z (GMT). No. of bitstreams: 1 Barbara dos Reis Santos.pdf: 1741973 bytes, checksum: a2c1145354df049aa6d015f4c78a7cfa (MD5) Previous issue date: 2012-10-15 / A doença renal crônica (DRC) já é considerada uma pandemia e indivíduos por ela acometidos possuem um sistema imunológico debilitado e são mais suscetíveis a doenças infecciosas e entre estas a tuberculose (TB) que também é reconhecidamente um problema global de saúde pública. Temos então que indivíduos portadores de DRC possuem um risco aumentado para a TB e com evidências de que por conta de seu estado de imunossupressão estes indivíduos também possuem um pior desfecho durante o tratamento. Dessa forma, este estudo pretendeu investigar aspectos epidemiológicos e clínicos da convergência da TB e DRC. RESULTADOS: Através de uma revisão sistemática e meta-análise encontramos uma prevalência agrupada de TB em indivíduos com DRC submetidos ao transplante renal de 2,51% (95% IC = 2,17 2,85). No Espírito Santo esta prevalência foi de 1,54% (95% IC 0,71% - 2,38%) e apresentou associação com história prévia de TB (OR = 40,71; 95% IC 2,54 651,84), número de episódios infecciosos (OR = 1,35; 95% IC 1,10 1,67) e uso de sirolimus na imunossupressão inicial (OR = 41,40; 95% IC 2,59 660,31). Ainda nesta população a mediana do tempo para o desenvolvimento de TB após o transplante renal foi de quatro anos e, entre os treze indivíduos identificados com TB, oito apresentaram doença pulmonar, sete necessitaram de hospitalização e quatro morreram em consequência da TB. Já os fatores que diferenciam as chances de abandono, óbito por TB e óbito por outra causa em relação cura no tratamento da TB, entre indivíduos com DRC no Brasil, foram os estratos etários; alcoolismo; AIDS; estar institucionalizado num presídio; estar sob a terapia de substituição renal transplante; retornar para o tratamento após abandono prévio; possuir um raio X de tórax suspeito para TB; e ter indicação ou ter realizado tratamento diretamente observado. CONCLUSÃO: Os desafios apresentados pela relação entre a TB e os indivíduos com DRC, que vão desde a alta prevalência até um pior desfecho para o tratamento, são imensos e nossos dados ajudam a reforçar a necessidade da implementação de estratégias para controle da TB direcionadas a determinados grupos populacionais, priorizando especialmente os portadores de doenças crônicas não transmissíveis como a DRC / Chronic kidney disease (CKD) is consider a pandemic. Subjects with CKD have an impaired immunologic system and are more susceptible to infectious diseases including tuberculosis (TB) - another global public health problem. Thus, subjects with CKD have a higher risk to TB and there are evidences that they also have a poor treatment outcome. This study aims to investigate the epidemiological and clinical aspects of CKD and TB convergence. RESULTS: Through a systematic review and meta-analysis we found a pooled prevalence of TB in kidney transplant recipients of 2.51% (95% CI = 2.17 2.85). In Espírito Santo state this prevalence was 1.54% (95% CI 0.71% 2.38%) and was associated with: prior TB history (OR = 40.71; CI 95% 2.54 651.84), number of infectious episodes (OR = 1.35; CI 95% 1.10 1.67) and use of sirolimus as initial immunosuppressive drug (OR = 41.40; CI 95% 2.59 660.31). The median of years for TB development after the transplantation in the same sample was four years. Among thirteen subjects with TB, eight had pulmonary disease, seven needed hospitalization and four died due to TB. Regarding the factors that differentiate the chances of abandonment and death from cure among Brazilian subjects with CKD were: age, alcoholism, AIDS, jail, kidney transplantation, previous abandonment of treatment, ray-X suspicious for TB and directly observed therapy. CONCLUSION: The challenges shown by the relationship between TB and CKD, since a higher prevalence until a poor treatment outcome, are enormous and our data strengthen the need of strategies to control TB with priority subjects with chronic non communicable disease like CKD

O Micofenolato Mofetil (MMF) é amplamente utilizado em transplantes de órgãos sólidos e tem como seu metabólito ativo o ácido micofenólico (MPA). A alta variabilidade intra e interindividual dos níveis plasmáticos de MPA em pacientes transplantados renais que recebem a mesma dose de MMF, a combinação com diferentes imunossupressores que afetam seu metabolismo e a oscilação destes níveis com o tempo decorrido após o transplante justificam a sua monitorização. Pequenas mudanças na dose de MMF podem comprometer a eficácia terapêutica. O objetivo deste trabalho foi avaliar a farmacocinética de duas formulações de MMF. Estudouse um ensaio para a dosagem de ácido micofenólico (MPA) plasmático (EMIT® 2000, Dade Behring) e a seguir, a biodisponibilidade da nova formulação de MMF disponibilizada por Strides Arcolab (MMF-SA), comparativamente ao CellCept® em pacientes transplantados renais estáveis. A metodologia de imunoensaio enzimático (EMIT) apresenta resultados relativamente mais elevados em relação à cromatografia líquida de alta resolução, devido à reação cruzada do metabólito acil glucoronídeo de MPA (AcMPAG) com o anticorpo presente no reagente. O método é capaz de detectar não só o MPA, mas também o seu metabólito ativo AcMPAG, o que pode representar uma vantagem. Comparamos o método EMIT com cromatografia líquida de alta resolução acoplada à espectrometria de massas (LC-MS/MS) e obtivemos r2 = 0,9612. O método apresentou: sensibilidade analítica de 0,02 ± 0,0016ug/mL; limite de detecção de 0,01 ± 0,0015ug/mL; linearidade de 14,58 ± 0,3300ug/mL; coeficientes de variação, intraensaio de 2,14% - 5,09% e interensaio de 4,18% - 5,02%. A estabilidade da amostra foi de 90 dias em temperatura de -20°C. Concluiu-se que a metodologia EMIT para dosagem de MPA é de fácil execução e apresenta boa precisão analítica. Participaram do estudo de biodisponibilidade, vinte e quatro pacientes adultos, transplantados renais, que já recebiam o CellCept® em combinação com Tacrolimus (n = 14), ciclosporina (n= 7) ou sem inibidores de calcineurina (n=3). Todos recebiam prednisona. As duas drogas foram administradas em esquema cruzado, com intervalo de uma semana entre as farmacocinéticas. Neste intervalo, os pacientes continuaram recebendo CellCept®. Foram analisadas as curvas farmacocinéticas de 12 horas para cada uma das duas formulações, nas mesmas doses equimolares. As médias ± SE das medidas de concentração máxima (Cmax) e da área sob a curva (AUC), para CellCept®, não foram estatisticamente diferentes das médias ± SE para MMF-SA (11,29 ± 1,35ug/mL versus 11,05 ± 1,08ug/mL e 49,11 ± 5,15ug.h/mL versus 47,59 ± 3,99 ug.h/mL), respectivamente. Da mesma forma, o intervalo de confiança 90% de MMF-SA / CellCept® para Cmax (93,57% - 121,73%) e para AUC 0-12h (93,75% - 108,90%) ficaram dentro do intervalo de bioequivalência (80% - 125%). Concluímos que CellCept® pode ser substituído com segurança pela formulação MMF-SA genérica em pacientes transplantados renais estáveis. / Mycophenolate mofetil (MMF) is largely used in solid organ transplantation. Mycophenolic Acid (MPA) is the active metabolite of MMF. The high intra and interpatients variability of the MPA plasma levels in transplant recipients under the same dose of MMF, the association with immunosuppressant drugs that change the MPA metabolism and pharmacokinetic parameters over time may cause impact in the optimal dose of MMF. The therapeutic monitoring of MPA may improve the efficacy and safety. The aim of this study was to: 1 -to validate the EMIT assay for MPA monitoring and 2: to assess the bioavailability of two MMF formulations. The performance of the EMIT® 2000 Dade Behring Mycophenolic acid enzimatic immunoassay was evaluated. There was a high correlation between the LC-MS/MS and EMIT (r2 = 0.9612). Because of the cross-reactivity of the antibody used in the EMIT assay with the active acyl glucuronide metabolite (AcMPAG), the EMIT concentrations are higher than those from high performance liquid chromatography (HPLC).The analytic sensitivity was 0.02 ± 0.0016ug/mL; detection limit 0.01 ± 0.0015ug/mL; linearity 14.58 ± 0.3300ug/mL. The CV of within-day precision was 2.14% - 5.09% and the CV of between-days precision was 4.18% - 5.02%. The sample stability was 90 days at - 20°C. The EMIT assay is easily performed and fulfills all the requirements for an assay. We studied the MMF formulation from Strides Arcolab (MMF-SA) and CellCept® in twenty-four adult, renal transplanted patients, receiving MMF (CellCept®), before the bioavailability study, combined with tacrolimus (n = 14), cyclosporine (n = 7) or without CNI (n = 3). All patients received prednisone. They had a 12 hours pharmacokinetics (PK) of total MPA measured after the same equimolar doses for the two formulations. The PK analysis revealed two mean PK curves that overlaid over each other. Mean ± SE of maximum concentration (Cmax) and area under the time-concentration curve (AUC) of CellCept® were not statistically different from the generic MMF-SA (11.29 ± 1.35 ug/mL vs 11.05 ± 1.05 ug/mL and 49.11 ± 5.15 ug.h/mL vs 47.59 ± 3.99 ug.h/mL, respectively). In the same way the MMF-SA/CellCept® 90% confidence interval for both: Cmax (93.57% -121.73%) and AUC0-12h (93.75% - 108.90%) was within the bioequivalence interval (80%-125%). In renal transplanted patients, CellCept® can be switched by the generic MMF formulation.

Submitted by Daniele Amaral (daniee_ni@hotmail.com) on 2016-09-28T18:21:54Z No. of bitstreams: 1 DissDCSB.pdf: 2906934 bytes, checksum: 3b23ea5fc5f62698539955a6d797f785 (MD5) / Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2016-10-04T18:36:42Z (GMT) No. of bitstreams: 1 DissDCSB.pdf: 2906934 bytes, checksum: 3b23ea5fc5f62698539955a6d797f785 (MD5) / Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2016-10-04T18:36:51Z (GMT) No. of bitstreams: 1 DissDCSB.pdf: 2906934 bytes, checksum: 3b23ea5fc5f62698539955a6d797f785 (MD5) / Made available in DSpace on 2016-10-04T18:43:09Z (GMT). No. of bitstreams: 1 DissDCSB.pdf: 2906934 bytes, checksum: 3b23ea5fc5f62698539955a6d797f785 (MD5) Previous issue date: 2015-02-24 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Kidney transplantation is an effective treatment recommended to chronic kidney disease. The discovery of the disease and the waiting for transplant affects hardly all the family. The research aims was to understand the impact of kidney transplantation in family life in the transplant recipient perspective, and understand how he realizes the importance of his family to the success of his transplant. This is a qualitative study using as theoretical and methodological framework Symbolic Interactionism and the Narrative, respectively. The identification of individuals was performed using a survey of the High Cost of Pharmacy county, since it is the location where they do drug withdrawal for treatment. The participants were 12 kidney transplant recipients who underwent transplantation in a period of up to 5 years who had primary caregiver a family member and who demonstrated clear thinking and consciousness. Data collection was made in a municipality in the state of São Paulo, through semi-structured interviews were audio recorded and were transcribed accurately. The analysis of the data emerged three themes: share the suffering: composed of 6 categories that depict the full impact that the family suffers from the illness until after transplantation; have a haven: represented by 5 categories that show all family effort to rebuild the face of adversity and fight for successful treatment and transplantation; and move on with the family: represented by four categories that describe the influence that the family has in the transplanted behavior throughout the experiment. Despite all the negative impact that the family suffers, it demonstrates is able to rebalance and provide the care and support needed for successful transplantation and coping with difficulties which affect the transplanted. / O transplante renal é um tratamento eficaz recomendado para tratar a insuficiência renal crônica. A descoberta da doença e a espera pelo transplante afeta duramente o indivíduo e a família. O objetivo desta pesquisa foi compreender a percepção do transplantado sobre a experiência de sua família no processo de adoecimento e transplante. Trata-se de um estudo qualitativo que utilizou como referencial teórico e metodológico o Interacionismo Simbólico e a Narrativa, respectivamente. A identificação dos sujeitos foi realizada através de levantamento no cadastro de transplantados renais na Farmácia de Alto Custo de um município localizado no interior do estado de São Paulo, Brasil. A pesquisa foi desenvolvida com 12 participantes que realizaram o transplante renal em período de até 5 anos, que tiveram como cuidador principal um membro da família e que demonstraram clareza de raciocínio e consciência. A coleta dos dados foi desenvolvida através de entrevistas semi-estruturadas. Da análise dos dados emergiram 3 temas: compartilhar o sofrimento: composto por 6 categorias que retratam todo o impacto que a família sofre desde o adoecimento até após o transplante; contar com um porto seguro: representado por 5 categorias que evidenciam todo esforço da família por(para) se reerguer frente às adversidades e lutar pelo sucesso do tratamento e do transplante; e seguir em frente com a família: representado por 4 categorias que descrevem a influência que a família tem no comportamento do transplantado ao longo da experiência. Apesar de todo impacto negativo que a família sofre, ela demonstra-se capaz de reequilibrar-se e prover o cuidado e apoio necessário para o sucesso do transplante e enfrentamento das dificuldades que o acometem o transplantado.

Introduction. The aim of the study was to introduce a new BKV PCR protocol in our centre and to verify its accuracy as well as to assess the prevalence, risk factors of BK virus replication, course of BKV infection and therapeutic approaches in simultaneous pancreas and kidney (SPK) recipients in order to design a screening protocol. Methods. The results analysed by both Affigene® and Transplantation Virology, Basel PCR protocols were compared. Thereafter 183 SPK patients were examined to assess the prevalence of BK viremia, viruria and BKVN and to identify the risk factors of BKV replication. The cases of retransplantation after a graft loss due to BKVN were retrospectively described. Results. 100 of results were analysed according to the Affigene ® and Transplantation Virology, Basel PCR protocols with the accordance of 95%, Rho = 0,946, 95% CI: 0.920 - 0.963, P<0,0001, Bland-Altman plot analyses: bias Basel PCR protocol/Affigene® BKV trender: -0,1 (mean) *±1.96 SD: -1,6 - 1,3] for both methods. Point-prevalence was assessed in 183 patients; Viruria found in 17,3 %, viremia in 3.8% of patients. High-level viruria >107 copies/mL detected in 3,7% of patiets, high-level virémia >104 in 1,6% of patients simultaneously with high-level viruria. BKVN was found in 0,5% of patients. Diabetes duration...

Improving the short-term results of kidney transplantation did not result in improving the long-term function and survival of kidney allograft. Organ shortage and increasing number of marginal donors remains the key problem in transplant today. The quality of donor organ is critical for graft function development and survival. The aim is to improve understanding to ischemia/reperfusion injury and its consequences, predict delayed graft function and rejection, improve organ allocation strategy and identify patients suitable for safe drug minimization or complete withdrawal of immunosuppressive therapy. Analysis of donor kidneys identified poor tubular cell quality and low survival factor, Netrin-1 expression levels, to be associated with delayed graft function. We confirmed that reperfusion phase of ischemia/reperfusion injury leads to minimal morphological but significant molecular abnormalities. Dissociation observed in histology and molecular pathology finding calls for an integrated approach in donor quality organ evaluation and allocation for transplantation. Significant heterogeneity within donors with expanded criteria was shown and subgroup of organs at low risk of delayed graft function was identified. We suggested donor biopsies to be performed as a routine praxis in all kidneys...

Long-term renal graft acceptance still requires long-term immunosuppressive therapy, which is accompanied by many adverse effects. Contrarily insufficient immunosuppression could lead to graft rejection and its failure. Therefore, research continues for biomarkers that reflect a patient's immunological status and thus allowing for individualized immunosuppressive therapy. In our study we showed lower incidence of acute rejection in kidney transplant recipients treated with rabbit anti-thymocyte globulin (rATG) or basiliximab induction within the first three months after transplantation. The rATG induction caused profound decrease of recipient's peripheral blood T and NK cells, as well as transcripts that are exclusively expressed by these cell types together with expansion of regulatory T cells (Tregs) among CD4+ T cells. In rATG group the increase of two transcripts associated with rejection (MAN1A1 and TLR5) was also observed in early post-transplant period. After the basiliximab induction we transiently detected CD4+CD25low/-FoxP3+ cell population along with disappearance of CD4+CD25+FoxP3+ Tregs. Basiliximab induction resulted in a transient increase in CD4+FoxP3+ Tregs, accompanied by the highest peripheral expression levels of markers associated with operational tolerance (FOXP3 and TCAIM)....

The literature indicates that treatment by means of elimination methods is extremely challenging for patients, bringing a fundamental change to their lives. The aim of the thesis was to identify and describe the challenges of treatment in patients with renal failure and how a given method of treatment affects the patient's quality of life and needs, as well as to understand the subjective difficulties and problems. A data collection method in the form of non-standardized semi-structured interviews was selected for qualitative research. The surveyed sample consisted of six patients of a dialysis centre. The respondents taking part in the qualitative research were informed in advance of the course, circumstances and ethical aspects of the research. The obtained data was analyzed, colour-coded and then sorted into subcategories. The results were interpreted using the "showdown" technique. The interviewed sample of respondents was subjected to multiple elimination methods in the treatment of their disease. Kidney transplant patients subjectively evaluated the quality of their lives as very high, talking about "a life of a normal man". Peritoneal dialysis patients also evaluated their quality of life as relatively high, highlighting a certain feeling of independence. Haemodialysis patients describe...

Notre équipe a précédemment rapporté que l'utilisation d'un traitement d'induction lympho-déplétant [les globulines anti-lymphocytaires polyclonales (GALP)], peut entrainer une lymphopénie T CD4 persistante chez certains transplantés rénaux. Celle-ci est associée à certaines anomalies biologiques telles que la présence d'un syndrome inflammatoire chronique. Ce travail de thèse s'intéresse aux facteurs impliqués dans l'induction de ces anomalies puisqu'elles sont associées à une augmentation de l'incidence d'infections, de maladies cardiovasculaires et de décès, habituellement retrouvés chez les personnes âgées. Nous avons montré que les GALP entrainent une diminution de la fonction thymique et une expansion de lymphocytes T à un stade avancé de différenciation pouvant traduire une immunosénescence prématurée. Par ailleurs, une rupture de la barrière intestinale semble favoriser la translocation bactérienne digestive et l'activation d'une inflammation chronique observée en transplantation, via les lipopolysaccharides libérés dans la circulation périphérique. La composition du rnicrobiote intestinal pourrait jouer un rôle dans l'initiation, le maintien et la sévérité de l'inflammation. Nous avons observé des modifications du microbiote après transplantation et après l' antibioprophylaxie utilisée en transplantation. Les mécanismes à l'origine de toutes ces observations restent à élucider mais ce travail permet d'améliorer la compréhension des facteurs impliqués dans le développement de l'immunosénescence et de l'inflammation chronique en transplantation rénale, ouvrant potentiellement la voie à d'intéressantes perspectives thérapeutiques. / We bave previously described that polyclonal anti-lymphocytic globulins (GALP) may contribute to prolonged CD4 T­cell lymphopenia in some renal transplant recipients, associated with some biological abnormalities, such as a chronic inflammatory syndrome. Our work focuses on the factors involved in the induction of tbese abnormalities and susceptible to increase the incidence of infections, cardiovascular diseases and deatb, comparable to the incidence observed in the elderly. We showed that GALP are implicated in the decrease in thymie output and the expansion ofT cells at an advanced stage of differentiation. Both are hallmarks of premature immune senescence. Moreover, the dysfunction of the gut epithelial barrier is responsible for gut bacterial translocation (GBT) and the activation of chronic inflammation observed in chronic kidney disease as well as in renal transplant recipients. The composition of the intestinal microbiota may play a role in the initiation, maintenance and severity of GBT and systernic inflammation. We reported the existence of a dysbiosis a.fier transplantation. The mechanisms involved remain to be elucidated, yet, this work contributes to the understanding of the potential factors involved. in the progression of immune senescence and the persistence of chronic inflammation after kidney transplantation paving the way to new fields of therapeutic research in transplantation

Kidney transplantation and head and neck cancer risk: systematic review and meta-analysis Paulo Ricardo Saquete Martins Filho, Aracaju/SE, Brazil, 2013. Background: Kidney transplantation is considered the treatment of choice for end-stage kidney disease, but a wide-ranging excess risk of post-transplant malignancies has been recognized as a complication of long-term immunosuppression. De novo malignancies are important cause of morbidity and mortality in kidney recipients. We performed a systematic review and meta-analysis to determine the risk of head and neck cancer after kidney transplantation. Methods: A systematic search was performed in PUBMED, EMBASE, SCOPUS, and LILACS databases to identify cohort studies reporting on the risk of head and neck cancer in kidney recipients. The assessment of validity of selected studies was performed using the STROBE statement and the Newcastle-Ottawa Scale (NOS) for Cohort Studies. Only studies with NOS ≥ 6 were included in the meta-analysis. Pooled relative risks (RR) were calculated using the Mantel-Haenszel or DerSimonian-Laird method, depending on statistical heterogeneity. To detect publication bias, Egger‟s test, Duval and Tweedie‟s analysis, and leave-one-out sensitivity analysis were conducted. Results: A total of 9 high-quality cohort studies were included in the meta-analysis. The pooled RR of head and neck cancer after kidney transplantation was 8.2 (95% CI 4.0-16.6, p<0.0001). A significant excess risk of cancer was observed in the lip (RR = 43.6, 95% CI 24.2-78.4, p<0.0001). The pooled RR of oral cavity/pharynx and salivary gland was 3.5 (95% CI 2.5-5.0, p<0.0001) and 5.6 (95% CI 1.3-24.0, p = 0.020), respectively. No evidence of publication bias was observed. Conclusion: There is an increased risk of head and neck cancer after kidney transplantation. The head and neck should be examined routinely during the post-transplant surveillance. / Transplante renal e risco de câncer de cabeça e pescoço: revisão sistemática e meta-análise, Paulo Ricardo Saquete Martins Filho, Aracaju/SE, Brasil, 2013. Introdução: O transplante renal é considerado o tratamento de escolha para a doença renal terminal, porém um aumento do risco de câncer pós-transplante tem sido reconhecido como uma complicação da imunossupressão em longo prazo. Malignidades pós-transplante são uma importante causa de morbidade e mortalidade em recipientes renais. Foi realizada uma revisão sistemática e meta-análise para determinar o risco de câncer de cabeça e pescoço após transplante renal. Método: Uma busca sistemática foi realizada nas bases de dados PUBMED, EMBASE, SCOPUS e LILACS para identificar estudos de coorte que estimaram o risco de câncer de cabeça e pescoço após transplante renal. A avaliação da validade dos estudos selecionados foi realizada através da iniciativa STROBE e da Newcastle-Ottawa Scale (NOS) para estudos de coorte. Somente estudos com NOS ≥ 6 foram incluídos na meta-análise. Os riscos relativos (RR) combinados foram calculados através do método de Mantel-Haenszel ou de DerSimonian-Laird, a depender da presença de heterogeneidade estatística. Para detectar viés de publicação, foram utilizados o teste de Egger, a análise de Duval e Tweedie e análise de sensibilidade leave-one-out . Resultados: Um total de 9 estudos de coorte de alta qualidade foram incluídos na meta-análise. O RR combinado do câncer de cabeça e pescoço após transplante renal foi de 8.2 (IC 95%4.0-16.6, p<0.0001). Um significante aumento do risco de câncer foi observado no lábio (RR = 43.6, IC 95% 24.2-78.4, p<0.0001). O RR combinado para o câncer de cavidade oral/faringe e glândulas salivares foi 3.5 (IC 95% 2.5-5.0, p<0.0001) e 5.6 (IC 95% 1.3-24.0, p = 0.020), respectivamente. Não houve evidência de viés de publicação. Conclusão: Há um aumento no risco de câncer de cabeça e pescoço após transplante renal. A região de cabeça e pescoço deve ser examinada rotineiramente durante a vigilância pós-transplante. Palavras-chave: transplante renal; neoplasmas; câncer de cabeça e pescoço; câncer de lábio; câncer oral; meta-análise.