José Humberto T.G. Tavares Guerreiro Fregnani

Dr. José Humberto T.G. Tavares Guerreiro Fregnani


Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
9 November 2016 in Acta Cytologica
Verified
Journal Article
Closed access
LMLaura W. Musselwhite
Laura W. Musselwhite
COCristina M. Oliveira
Cristina M. Oliveira
TKTendai Kwaramba
Tendai Kwaramba
NPNaitielle de Paula Pantano
Naitielle de Paula Pantano
JSJennifer S. Smith
Jennifer S. Smith
ALAdhemar Longatto-Filho
Adhemar Longatto-Filho
Invasive cervical cancer disproportionately affects women without sufficient access to care, with higher rates among minority groups in higher-income countries and women in low-resource regions of the world. Many elements contribute to racial/ethnic disparities in the cervical cancer continuum - from screening and diagnosis to treatment and outcome. Sociodemographic factors, access to healthcare, income and education level, and disease stage at diagnosis are closely linked to such inequities. Despite the identification of such elements, racial/ethnic disparities persist, and are widening in several minority subgroups, particularly in older women, who are ineligible for human papillomavirus (HPV) vaccination and are underscreened. Recent studies suggest that racial/ethnic differences in HPV infection exist and may also have a role in observed differences in cervical cancer. In this review, we provide an overview of the current literature on racial disparities in cervical cancer screening, incidence, treatment and outcome to inform future strategies to reduce persistent inequities.

14 March 2019 in Acta Cytologica
Verified
Journal Article
Closed access
PDF file
COCristina Oliveira
Cristina Oliveira
JFJosé Humberto T.G. Tavares Guerreiro Fregnani
José Humberto T.G. Tavares Guerreiro Fregnani
LVLuisa Lina Villa
Luisa Lina Villa
HPV is the most common sexually transmitted biological agent and is the cause of many conditions in men and women, including precancer lesions and cancer. Three prophylactic HPV vaccines targeting high-risk HPV types are available in many countries worldwide: 2-, 4- and 9-valent vaccines. All the 3 vaccines use recombinant DNA technology and are prepared from the purified L1 protein that self-assembles to form HPV type-specific empty shells. This non-systematic review aims to summarize the HPV epidemiology and the vaccine development to review the landmark trials of HPV vaccine, to present to most remarkable results from clinical trials and the real world, and to stress the challenges and the barriers for HPV vaccine implementation.

1 January 2015 in BMC Research Notes
Verified
Journal Article
Open access
PDF file
VVVinicius vazquez
Vinicius vazquez
TSThiago Buosi Silva
Thiago Buosi Silva
MVMarcelo de Andrade Vieira
Marcelo de Andrade Vieira
AOAntônio Talvane Torres de Oliveira
Antônio Talvane Torres de Oliveira
MLMarcílio Vital Lisboa
Marcílio Vital Lisboa
ECEstela Cristina Carneseca
Estela Cristina Carneseca
The incidence of melanoma, one of the most aggressive of the skin cancers, has been increasing worldwide in the last few decades. Data from Latin America and Brazil remain scarce. We aimed to describe the demographic, clinical, and histopathological data; therapy characteristics; and survival rates of the Brazilian melanoma patient population. We collected and analysed retrospective data from 15 years at a tertiary cancer centre. We describe patient characteristics and treatment. We calculated survival, and identified the main prognostic factors through univariate and multivariate analysis. We analysed a total of 1073 patients, with a mean age of 56.7 years. Men and women experienced similar prevalence, and 91.2% of patients had white skin. The most prevalent subtype was superficial spreading, and the most prevalent anatomic location was the trunk (32.2%), followed by the lower extremities (28%). Of all cases, 567 (52.9%) were assigned to clinical stages I and II, while 382 (32.6%) were stages III and IV. Surgery was the main treatment. Sentinel node biopsy was performed in 373 patients, with 23.8% positivity. Overall actuarial 5-year survival was 67.6%. Multivariate analysis showed that gender, serum lactate dehydrogenase (LDH) levels at diagnosis; anatomic location, TNM stage, and local recurrence were significant prognostic factors. Overall survival was lower than worldwide rates. The main factors influencing survival were similar to those in other populations. Local recurrence was independently associated with lower survival rates. The high prevalence of advanced cases reinforces the importance of strategies to diagnose melanomas in the early stages. There is a need for future multi-institutional prospective studies to attain a better understanding of possible socioeconomic and other influences on survival among melanoma populations in Brazil and Latin America.

1 September 2018 in Gynecologic Oncology
Verified
Journal Article
Closed access
CRCaroline Domingues Rogeri
Caroline Domingues Rogeri
Henrique SilveiraHenrique Silveira
Henrique Silveira
RCRhafaela Causin
Rhafaela Causin
LVLuisa Lina Villa
Luisa Lina Villa
MSMaíra Degiovani Stein
Maíra Degiovani Stein
JFJosé Humberto T.G. Tavares Guerreiro Fregnani
José Humberto T.G. Tavares Guerreiro Fregnani

24 April 2013 in PLOS ONE
Verified
Journal Article
Open access
PDF file
JFJosé Humberto T.G. Tavares Guerreiro Fregnani
José Humberto T.G. Tavares Guerreiro Fregnani
ACAndré Lopes Carvalho
André Lopes Carvalho
JEJose Eluf-Neto
Jose Eluf-Neto
KRKarina De Cássia Braga Ribeiro
Karina De Cássia Braga Ribeiro
LKLarissa De Melo Kuil
Larissa De Melo Kuil
LVLuisa Lina Villa
Luisa Lina Villa
Introduction The implementation of a public HPV vaccination program in several developing countries, especially in Latin America, is a great challenge for health care specialists. Aim To evaluate the uptake and the three-dose completion rates of a school-based HPV vaccination program in Barretos (Brazil). Methods The study included girls who were enrolled in public and private schools and who regularly attended the sixth and seventh grades of elementary school (mean age: 11.9 years). A meeting with the parents or guardians occurred approximately one week before the vaccination in order to explain the project and clarify the doubts. The quadrivalent vaccine was administered using the same schedule as in the product package (0–2–6 months). The school visits for regular vaccination occurred on previously scheduled dates. The vaccine was also made available at Barretos Cancer Hospital for the girls who could not be vaccinated on the day when the team visited the school. Results Among the potential candidates for vaccination (n = 1,574), the parents or guardians of 1,513 girls (96.1%) responded to the invitation to participate in the study. A total of 1,389 parents or guardians agreed to participate in the program (acceptance rate = 91.8%). The main reason for refusing to participate in the vaccination program was fear of adverse events. The vaccine uptake rates for the first, second, and third doses were 87.5%, 86.3% and 85.0%, respectively. The three-dose completion rate was 97.2%. Conclusions This demonstrative study achieved high rates of vaccination uptake and completion of three vaccine doses in children 10–16 years old from Brazil. The feasibility and success of an HPV vaccination program for adolescents in a developing country may depend on the integration between the public health and schooling systems.

7 January 2009 in BMC Cancer
Verified
Journal Article
Open access
PDF file
YSYukie Sato-Kuwabara
Yukie Sato-Kuwabara
JNJosé I Neves
José I Neves
JFJosé Humberto T.G. Tavares Guerreiro Fregnani
José Humberto T.G. Tavares Guerreiro Fregnani
RSRubens A Sallum
Rubens A Sallum
FSFernando A Soares
Fernando A Soares
Esophageal squamous cell carcinoma (ESCC) is the sixth most frequent neoplasia in Brazil. It is usually associated with a poor prognosis because it is often at an advanced stage when diagnosed and there is a high frequency of lymph node metastases. It is important to know what prognostic factors can facilitate diagnosis, optimize therapeutic decisions, and improve the survival of these patients. A member of the epidermal growth factor receptor (EGFR) family, c-erbB-2, has received much attention because of its therapeutic implications; however, few studies involving fluorescence in situ hybridization (FISH) analysis of HER-2/neu gene amplification and protein expression in ESCC have been conducted. The aim of this study was to verify the presence of HER-2/neu gene amplification using FISH, and to correlate the results with immunohistochemical expression and clinical-pathological findings.