Racial survival disparities in head and neck cancer clinical trials.

BACKGROUND: Survival disparities between Black and White head and neck cancer patients are well documented, with access to care and socioeconomic status as major contributors. We set out to assess the role of self-reported race in head and neck cancer by evaluating treatment outcomes of patients enrolled in clinical trials, where access to care and socioeconomic status confounders are minimized. METHODS: Clinical trial data from the Radiation Therapy Oncology Group studies were obtained. Studies were included if they were therapeutic trials that employed survival as an endpoint. Studies that did not report survival as an endpoint were excluded; 7 Radiation Therapy Oncology Group Studies were included for study. For each Black patient enrolled in a clinical trial, a study arm-matched White patient was used as a control. RESULTS: A total of 468 Black participants were identified and matched with 468 White study arm-specific controls. White participants had better outcomes than Black participants in 60% of matched pairs (P < .001). Black participants were consistently more likely to have worse outcomes. When outcomes were measured by progression-free survival or disease-free survival, the failure rate was statistically significantly higher in Black participants (hazard ratio [HR] = 1.50, P < .001). Failure was largely due to locoregional failure, and Black participants were at higher risk (subdistribution HR =1.51, P = .002). The development of distant metastasis within the paired cohorts was not statistically significantly different. CONCLUSION: In this study of clinical trial participants using self-reported race, Black participants consistently had worse outcomes in comparison to study arm-specific White controls. Further study is needed to confirm these findings and to explore causes underlying this disparity.

An Evaluation of Regional Cardiovascular Disease and Cancer Research Needs Using Conference Abstracts.

Background: Despite cardiovascular diseases and cancer being the leading causes of premature mortality in the Caribbean region, there is limited local research available to guide a comprehensive response to this epidemic. Objective: To evaluate cardiovascular disease and cancer research in the Caribbean using abstracts presented at the Caribbean Public Health Agency's (CARPHA) meeting - the longest running annual research conference in the region. Method: Study data (population, intervention/exposure, comparison and outcome) were extracted from abstracts published for the 2006 to 2018 meetings. Additionally, institutional affiliation and geographic location of the first author, countries involved, sample size, study design and use of specialized testing/biomarkers were also extracted. Data were analysed using STATA version 14. Findings: A total of 1,512 abstracts, 728 posters and 784 oral presentations were reviewed. Research on cancer and cardiovascular disease comprised approximately 15% of all abstracts published annually over the review period. Most of the cardiovascular disease studies had cross sectional or survey designs (46%), with very few laboratory-based studies (<2%) and no intervention studies/clinical trials. For cancer research, 30% were cross-sectional studies/audits, 11% were case control studies, 5% were lab based and there were no clinical trials. Almost a quarter of the cardiovascular disease / cancer abstracts over the period originated from Trinidad and Tobago (26%), with Jamaica and Barbados contributing 18% and 15% respectively. Conclusion: These finding highlight the need for additional studies that can provide evidence for interventions and policy to address the region's high cardiovascular disease and cancer burden. A Regional Centre of Research Excellence could support capacity development to facilitate this process.

Colorectal Cancer Screening Prevalence and Adherence for the Cancer Prevention Project of Philadelphia (CAP3) Participants Who Self-Identify as Black.

INTRODUCTION: Colorectal cancer is the third leading cause of cancer-related deaths among Black men and women. While colorectal cancer screening (CRCS) reduces mortality, research assessing within race CRCS differences is lacking. This study assessed CRCS prevalence and adherence to national screening recommendations and the association of region of birth with CRCS adherence, within a diverse Black population. METHODS: Data from age-eligible adults, 50-75 years, (N = 357) participating in an ongoing, cross-sectional study, was used to measure CRCS prevalence and adherence and region of birth (e.g., Caribbean-, African-, US-born). Prevalence and adherence were based on contemporaneous US Preventive Services Task Force guidelines. Descriptive statistics were calculated and adjusted prevalence and adherence proportions were calculated by region of birth. Adjusted logistic regression models were performed to assess the association between region of birth and overall CRCS and modality-specific adherence. RESULTS: Respondents were 69.5% female, 43.3% married/living with partner, and 38.4% had <$25,000 annual income. Overall, 78.2% reported past CRCS; however, stool test had the lowest prevalence overall (34.6%). Caribbean (95.0%) and African immigrants (90.2%) had higher prevalence of overall CRCS compared to US-born Blacks (59.2%) (p-value <0.001). African immigrants were five times more likely to be adherent to overall CRCS compared to US-born Blacks (OR = 5.25, 95% CI 1.34-20.6). Immigrants had higher odds of being adherent to colonoscopy (Caribbean OR = 6.84, 95% CI 1.49-31.5; African OR = 7.14, 95% CI 1.27-40.3) compared to US-born Blacks. CONCLUSIONS: While Caribbean and African immigrants have higher prevalence and adherence of CRCS when compared US-born Blacks, CRCS is still sub-optimal in the Black population. Efforts to increase CRCS, specifically stool testing, within the Black population are warranted, with targeted interventions geared towards US-born Blacks.

A cross-sectional analysis of investigator needs for non-communicable disease research at the University of the West Indies, Mona.

OBJECTIVE: To describe the needs of academic staff conducting non-communicable disease (NCD) research at the University of the West Indies, Mona Campus in Jamaica. METHODS: Utilizing a cross-sectional design an online survey was created using the research electronic data capture application (REDCap); it was disseminated via email to 708 academic staff members in the Faculties of Medical Sciences and Science & Technology between September and November 2018. Participants were asked to indicate their level of access to expertise, training and equipment for conducting research. Descriptive analysis was conducted using STATA version 14. RESULTS: Most respondents were women (74.2%), predominantly scientists (33.1%) or specialist physicians (22.6%). Less than 2/3 of respondents reported publishing research findings in peer reviewed journals, with a quarter not disseminating their research findings in any medium. Resources for field research/data collection, epidemiological methods and principles, and data management/data analysis were generally available. However, there was limited access to training, expertise and equipment in emerging techniques for NCD research such as metabolomics, bioinformatics/analysis of large-scale data sets and health economics. Additional challenges included limited access to financing for research, inadequate workspace and poor administrative support for conducting research. CONCLUSIONS: There is a need for more local research seed funding, stronger administrative support for researchers, and opportunities for training in cutting edge NCD research techniques. Jamaican researchers could benefit from being part of a regional research centre of excellence with critical research skills and equipment that builds research networks and strengthens the NCD research response.

A cross-sectional analysis of investigator needs for non-communicable disease research at the University of the West Indies, Mona

[ABSTRACT]. Objective. To describe the needs of academic staff conducting non-communicable disease (NCD) research at the University of the West Indies, Mona Campus in Jamaica. Methods. Utilizing a cross-sectional design an online survey was created using the research electronic data capture application (REDCap); it was disseminated via email to 708 academic staff members in the Faculties of Medical Sciences and Science & Technology between September and November 2018. Participants were asked to indicate their level of access to expertise, training and equipment for conducting research. Descriptive analysis was conducted using STATA version 14. Results. Most respondents were women (74.2%), predominantly scientists (33.1%) or specialist physicians (22.6%). Less than 2/3 of respondents reported publishing research findings in peer reviewed journals, with a quarter not disseminating their research findings in any medium. Resources for field research/data collection, epidemiological methods and principles, and data management/data analysis were generally available. However, there was limited access to training, expertise and equipment in emerging techniques for NCD research such as metabolomics, bioinformatics/analysis of large-scale data sets and health economics. Additional challenges included limited access to financing for research, inadequate workspace and poor administrative support for conducting research. Conclusions. There is a need for more local research seed funding, stronger administrative support for researchers, and opportunities for training in cutting edge NCD research techniques. Jamaican researchers could benefit from being part of a regional research centre of excellence with critical research skills and equipment that builds research networks and strengthens the NCD research response.

[RESUMEN]. Objetivo. Describir las necesidades del personal académico que investiga las enfermedades no transmisibles (ENT) en el Campus de Mona de la Universidad de las Indias Occidentales, en Jamaica. Métodos. Mediante un diseño transversal, se elaboró una encuesta en línea con RedCap, una aplicación para la captura de datos electrónicos para la investigación, y se divulgó por correo electrónico a los 708 miembros del personal académico de las Facultades de Ciencias Médicas y Ciencia y Tecnología entre septiembre y noviembre del 2018. Se pidió a los participantes que indicaran su nivel de acceso a conocimientos, capacitación y equipo para llevar a cabo investigaciones. El análisis descriptivo se realizó con STATA, versión 14. Resultados. La mayoría de los entrevistados fueron mujeres (74,2%), predominantemente científicas (33,1%) o médicas especialistas (22,6%). Menos de dos terceras partes de los entrevistados informó que publicaban los resultados de sus investigaciones en revistas arbitradas y una cuarta parte declaró que no divulgaba los resultados de sus investigaciones en ningún medio. Por lo general, tenían a su disposición recursos para la investigación de campo o la recopilación de datos, métodos y principios epidemiológicos, así como para la gestión y el análisis de datos. Sin embargo, tenían poco acceso a conocimientos, capacitación y equipo en las técnicas emergentes para la investigación sobre ENT como la metabolómica, la bioinformática o el análisis de conjuntos de datos a gran escala y economía de la salud. Otros retos incluyeron poco acceso al financiamiento para la investigación, espacios de trabajo inadecuados y un apoyo administrativo deficiente para investigar. Conclusiones. Se necesita más capital inicial destinado a la investigación local, un mayor respaldo administrativo a los investigadores y oportunidades de capacitación en las técnicas más recientes de investigación de ENT. Los investigadores jamaiquinos podrían sacar provecho de formar parte de un centro regional de excelencia para la investigación con el equipo y las capacidades de investigación fundamentales para contribuir a la formación de redes de investigación y fortalecer la respuesta investigadora a las ENT.

[RESUMO]. Objetivo. Descrever as carências enfrentadas pelo grupo acadêmico que realiza pesquisa em doenças não transmissíveis (DNT) na Universidade das Índias Ocidentais, campus de Mona, Jamaica. Métodos. Uma pesquisa transversal online foi desenvolvida com o uso da plataforma de captura eletrônica de dados de pesquisa (RedCap) e distribuída por e-mail a 708 integrantes dos grupos acadêmicos nas Faculdades de Ciências Médicas e de Ciência e Tecnologia entre setembro e novembro de 2018. Foi pedido aos participantes que informassem o grau de acesso a conhecimento especializado, capacitação e equipamentos para a realização de pesquisa. Uma análise descritiva foi realizada com o uso do software STATA versão 14. Resultados. Participaram, na sua maioria, mulheres (74,2%), com o predomínio de pesquisadores científicos (33,1%) ou médicos especialistas (22,6%). Menos de 2/3 informaram publicar os resultados de suas pesquisas em periódicos científicos com avaliação por pares e 25% disseram que não divulgavam seus resultados em nenhum veículo. Afirmaram que, em geral, havia recursos para realizar pesquisa de campo/coleta de dados, métodos e procedimentos básicos epidemiológicos e gerenciamento/análise de dados. Porém, era limitado o acesso a capacitação, conhecimentos especializados e equipamentos para empregar métodos emergentes de pesquisa de DNT como metabolômica, bioinformática/processamento em larga escala de grandes conjuntos de dados e economia da saúde. Outras dificuldades citadas foram limitação de financiamento para pesquisa, inadequação dos locais de trabalho e apoio administrativo deficiente à realização de pesquisas. Conclusões. Faz-se necessário mais financiamento para projetos iniciantes locais, firme apoio administrativo aos pesquisadores e oportunidades para capacitação em métodos de ponta de pesquisa de DNT. A situação dos pesquisadores jamaicanos poderia melhorar se fizessem parte de um centro de excelência regional com recursos e equipamentos essenciais para a realização de pesquisa que lhes permitisse formar redes de pesquisadores e fortalecer a resposta da pesquisa de DNT.

The Cancer Prevention Project of Philadelphia: preliminary findings examining diversity among the African diaspora.

Objective: Cancer mortality inequity among persons of African Ancestry is remarkable. Yet, Black inclusion in cancer biology research is sorely lacking and warrants urgent attention. Epidemiologic research linking African Ancestry and the African Diaspora to disease susceptibility and outcomes is critical for understanding the significant and troubling health disparities among Blacks. Therefore, in a cohort of diverse Blacks, this study examined differences in genetic ancestry informative markers (AIMs) in the DNA repair pathway and the cancer related biomarker 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL).Methods: Participants completed a questionnaire and provided bio-specimens. AIMs in or around DNA repair pathway genes were analyzed to assess differences in minor allele frequency (MAF) across the 3 ethnic subgroups. NNAL concentration in urine was measured among current smokers.Results: To date the cohort includes 852 participants, 88.3% being Black. Of the 752 Blacks, 51.3% were US-born, 27.8% were Caribbean-born, and 19.6% were Africa-born. Current and former smokers represented 14.9% and 10.0%, respectively. US-born Blacks were more likely to be smokers and poor metabolizers of NNAL. Two-way hierarchical clustering revealed MAF of AIMs differed across the 3 ethnic subgroups.Conclusion: Our findings are consistent with the emerging literature demonstrating Black heterogeneity underscoring African Ancestry genetic subgroup differences - specifically relevant to cancer. Further investigations, with data harmonization and sharing, are urgently needed to begin to map African Ancestry cancer biomarkers as well as race, and race by place\region comparative biomarkers to inform cancer prevention and treatment in the era of precision medicine.

A cross-sectional analysis of investigator needs for non-communicable disease research at the University of the West Indies, Mona / Análisis transversal de las necesidades de los investigadores de las enfermedades no transmisibles en la Universidad de las Indias Occidentales en Mona / Uma análise transversal das carências dos pesquisadores envolvidos em pesquisa de doenças não transmissíveis na Universidade das Índias Ocidentais, Mona

ABSTRACT Objective. To describe the needs of academic staff conducting non-communicable disease (NCD) research at the University of the West Indies, Mona Campus in Jamaica. Methods. Utilizing a cross-sectional design an online survey was created using the research electronic data capture application (REDCap); it was disseminated via email to 708 academic staff members in the Faculties of Medical Sciences and Science & Technology between September and November 2018. Participants were asked to indicate their level of access to expertise, training and equipment for conducting research. Descriptive analysis was conducted using STATA version 14. Results. Most respondents were women (74.2%), predominantly scientists (33.1%) or specialist physicians (22.6%). Less than 2/3 of respondents reported publishing research findings in peer reviewed journals, with a quarter not disseminating their research findings in any medium. Resources for field research/data collection, epidemiological methods and principles, and data management/data analysis were generally available. However, there was limited access to training, expertise and equipment in emerging techniques for NCD research such as metabolomics, bioinformatics/analysis of large-scale data sets and health economics. Additional challenges included limited access to financing for research, inadequate workspace and poor administrative support for conducting research. Conclusions. There is a need for more local research seed funding, stronger administrative support for researchers, and opportunities for training in cutting edge NCD research techniques. Jamaican researchers could benefit from being part of a regional research centre of excellence with critical research skills and equipment that builds research networks and strengthens the NCD research response.

RESUMEN Objetivo. Describir las necesidades del personal académico que investiga las enfermedades no transmisibles (ENT) en el Campus de Mona de la Universidad de las Indias Occidentales, en Jamaica. Métodos. Mediante un diseño transversal, se elaboró una encuesta en línea con RedCap, una aplicación para la captura de datos electrónicos para la investigación, y se divulgó por correo electrónico a los 708 miembros del personal académico de las Facultades de Ciencias Médicas y Ciencia y Tecnología entre septiembre y noviembre del 2018. Se pidió a los participantes que indicaran su nivel de acceso a conocimientos, capacitación y equipo para llevar a cabo investigaciones. El análisis descriptivo se realizó con STATA, versión 14. Resultados. La mayoría de los entrevistados fueron mujeres (74,2%), predominantemente científicas (33,1%) o médicas especialistas (22,6%). Menos de dos terceras partes de los entrevistados informó que publicaban los resultados de sus investigaciones en revistas arbitradas y una cuarta parte declaró que no divulgaba los resultados de sus investigaciones en ningún medio. Por lo general, tenían a su disposición recursos para la investigación de campo o la recopilación de datos, métodos y principios epidemiológicos, así como para la gestión y el análisis de datos. Sin embargo, tenían poco acceso a conocimientos, capacitación y equipo en las técnicas emergentes para la investigación sobre ENT como la metabolómica, la bioinformática o el análisis de conjuntos de datos a gran escala y economía de la salud. Otros retos incluyeron poco acceso al financiamiento para la investigación, espacios de trabajo inadecuados y un apoyo administrativo deficiente para investigar. Conclusiones. Se necesita más capital inicial destinado a la investigación local, un mayor respaldo administrativo a los investigadores y oportunidades de capacitación en las técnicas más recientes de investigación de ENT. Los investigadores jamaiquinos podrían sacar provecho de formar parte de un centro regional de excelencia para la investigación con el equipo y las capacidades de investigación fundamentales para contribuir a la formación de redes de investigación y fortalecer la respuesta investigadora a las ENT.

RESUMO Objetivo. Descrever as carências enfrentadas pelo grupo acadêmico que realiza pesquisa em doenças não transmissíveis (DNT) na Universidade das Índias Ocidentais, campus de Mona, Jamaica. Métodos. Uma pesquisa transversal online foi desenvolvida com o uso da plataforma de captura eletrônica de dados de pesquisa (RedCap) e distribuída por e-mail a 708 integrantes dos grupos acadêmicos nas Faculdades de Ciências Médicas e de Ciência e Tecnologia entre setembro e novembro de 2018. Foi pedido aos participantes que informassem o grau de acesso a conhecimento especializado, capacitação e equipamentos para a realização de pesquisa. Uma análise descritiva foi realizada com o uso do software STATA versão 14. Resultados. Participaram, na sua maioria, mulheres (74,2%), com o predomínio de pesquisadores científicos (33,1%) ou médicos especialistas (22,6%). Menos de 2/3 informaram publicar os resultados de suas pesquisas em periódicos científicos com avaliação por pares e 25% disseram que não divulgavam seus resultados em nenhum veículo. Afirmaram que, em geral, havia recursos para realizar pesquisa de campo/coleta de dados, métodos e procedimentos básicos epidemiológicos e gerenciamento/análise de dados. Porém, era limitado o acesso a capacitação, conhecimentos especializados e equipamentos para empregar métodos emergentes de pesquisa de DNT como metabolômica, bioinformática/processamento em larga escala de grandes conjuntos de dados e economia da saúde. Outras dificuldades citadas foram limitação de financiamento para pesquisa, inadequação dos locais de trabalho e apoio administrativo deficiente à realização de pesquisas. Conclusões. Faz-se necessário mais financiamento para projetos iniciantes locais, firme apoio administrativo aos pesquisadores e oportunidades para capacitação em métodos de ponta de pesquisa de DNT. A situação dos pesquisadores jamaicanos poderia melhorar se fizessem parte de um centro de excelência regional com recursos e equipamentos essenciais para a realização de pesquisa que lhes permitisse formar redes de pesquisadores e fortalecer a resposta da pesquisa de DNT.

The effect of neighborhood social environment on prostate cancer development in black and white men at high risk for prostate cancer.

INTRODUCTION: Neighborhood socioeconomic (nSES) factors have been implicated in prostate cancer (PCa) disparities. In line with the Precision Medicine Initiative that suggests clinical and socioenvironmental factors can impact PCa outcomes, we determined whether nSES variables are associated with time to PCa diagnosis and could inform PCa clinical risk assessment. MATERIALS AND METHODS: The study sample included 358 high risk men (PCa family history and/or Black race), aged 35-69 years, enrolled in an early detection program. Patient variables were linked to 78 nSES variables (employment, income, etc.) from previous literature via geocoding. Patient-level models, including baseline age, prostate specific antigen (PSA), digital rectal exam, as well as combined models (patient plus nSES variables) by race/PCa family history subgroups were built after variable reduction methods using Cox regression and LASSO machine-learning. Model fit of patient and combined models (AIC) were compared; p-values<0.05 were significant. Model-based high/low nSES exposure scores were calculated and the 5-year predicted probability of PCa was plotted against PSA by high/low neighborhood score to preliminarily assess clinical relevance. RESULTS: In combined models, nSES variables were significantly associated with time to PCa diagnosis. Workers mode of transportation and low income were significant in White men with a PCa family history. Homeownership (%owner-occupied houses with >3 bedrooms) and unemployment were significant in Black men with and without a PCa family history, respectively. The 5-year predicted probability of PCa was higher in men with a high neighborhood score (weighted combination of significant nSES variables) compared to a low score (e.g., Baseline PSA level of 4ng/mL for men with PCa family history: White-26.7% vs 7.7%; Black-56.2% vs 29.7%). DISCUSSION: Utilizing neighborhood data during patient risk assessment may be useful for high risk men affected by disparities. However, future studies with larger samples and validation/replication steps are needed.

The impact of the multidisciplinary tumor board on head and neck cancer outcomes.

OBJECTIVES/HYPOTHESIS: Although the multidisciplinary tumor board (MTB) is accepted as best practice for the management of head and neck squamous cell carcinoma (HNSCC), there is limited evidence showing its impact on survival. Our goal was to investigate the impact of an MTB following the hiring of a fellowship-trained head and neck surgeon and implementation of an MTB at our institution. We hypothesized that these changes would demonstrate an improvement in survival. STUDY DESIGN: Retrospective chart review. METHODS: A review of HNSCC treated at our institution between October 2006 and May 2015 was performed. The cohort was divided into pre-MTB (October 2006-February 2011) and post-MTB (February 2011-May 2015) cohorts. Patient demographics, cancer stage, and treatment outcomes were reviewed. Univariate, multivariate, and survival analysis were performed. RESULTS: The study included 224 patients, 98 in the pre-MTB cohort and 126 in the post-MTB cohort. Of total patients, 139 (62%) were black and 91 (40%) were on Medicaid or uninsured. Average follow-up time was 2.8 years, and most cases were advanced stage (68%). On Kaplan-Meier evaluation, overall survival and disease-specific survival were significantly improved in the post-MTB cohort compared with the pre-MTB cohort, with a 5-year disease-specific survival of 52% vs. 75% (P = .003). A matched cohort analysis showed that the post-MTB cohort had significantly lower risk of death (hazard ratio: 0.48). CONCLUSIONS: Our study demonstrates that treatment of HNSCC by a dedicated multidisciplinary team results in improved survival. Multidisciplinary care should be considered best practice in the care of HNSCC. LEVEL OF EVIDENCE: 3b Laryngoscope, 130:946-950, 2020.

Human papillomavirus genotype distribution in cervical samples among vaccine naïve Barbados women.

PURPOSE: This study was undertaken to provide baseline HPV genotype distribution among women in Barbados before HPV immunization was introduced. This information would then be used as a denominator for post-vaccine surveillance and is expected to aid in understanding the effect of vaccination on cervical disease in Barbados. METHODS: Liquid-based cytology specimens were collected from 413 women (age range 18-65 years) attending three clinics, in a pre-vaccination, population-based study. After consent was obtained, sexual behavior and socio-demographic information were acquired from self-administered questionnaires. HPV types were detected using Luminex-based HPV PCR genotyping methodology. RESULTS: HPV was detected in 33% (135/413) of the subjects overall (95% CI 32.7, 33.37), of which 70% (95/135) were high-risk types, with 35 different types being detected in this population. Single and multiple high-risk HPV types were detected in 14% (13/95) and 31% (29/95) of the subjects, respectively. The most common high-risk HPV types detected were 45(n = 22, 23%), 16 (n = 17, 18%), 52 (n = 16, 17%), and 58 (n = 10, 11%). Persons with the highest level of infection by age were 21-25 (n = 25/135;19%; 95% CI 18.8, 19.3); 26-30 (n = 22/135;16%; 95% CI 15.9, 16.2); 31-35 (n = 19/135;14%; 95% CI 13.9, 14.2); 36-40 (n = 17/135;13%; 95% CI 12.2, 13.2), and 18-21 (n = 15/135;11%; 95% CI 10.9, 11.2). 91/413 (22%) persons had a normal cytology result. CONCLUSION: A high prevalence of HPV type 45 was found in the screening population of women in Barbados. The results of cytological examinations and HPV positivity suggest that both tests should be used for greater reliable diagnosis of HPV infection.

Prevalence of HPV Infection in Racial-Ethnic Subgroups of Head and Neck Cancer Patients.

The landscape of HPV infection in racial/ethnic subgroups of head and neck cancer (HNC) patients has not been evaluated carefully. In this study, a meta-analysis examined the prevalence of HPV in HNC patients of African ancestry. Additionally, a pooled analysis of subject-level data was also performed to investigate HPV prevalence and patterns of p16 (CDNK2A) expression amongst different racial groups. Eighteen publications (N = 798 Black HNC patients) were examined in the meta-analysis, and the pooled analysis included 29 datasets comprised of 3,129 HNC patients of diverse racial/ethnic background. The meta-analysis revealed that the prevalence of HPV16 was higher among Blacks with oropharyngeal cancer than Blacks with non-oropharyngeal cancer. However, there was great heterogeneity observed among studies (Q test P<0.0001). In the pooled analysis, after adjusting for each study, year of diagnosis, age, gender and smoking status, the prevalence of HPV16/18 in oropharyngeal cancer patients was highest in Whites (61.1%), followed by 58.0% in Blacks and 25.2% in Asians (P<0.0001). There was no statistically significant difference in HPV16/18 prevalence in non-oropharyngeal cancer by race (P=0.682). With regard to the pattern of HPV16/18 status and p16 expression, White patients had the highest proportion of HPV16/18+/p16+ oropharyngeal cancer (52.3%), while Asians and Blacks had significantly lower proportions (23.0% and 22.6%, respectively) [P <0.0001]. Our findings suggest that the pattern of HPV16/18 status and p16 expression in oropharyngeal cancer appears to differ by race and this may contribute to survival disparities.

Integrative genomic analysis identifies ancestry-related expression quantitative trait loci on DNA polymerase ß and supports the association of genetic ancestry with survival disparities in head and neck squamous cell carcinoma.

BACKGROUND: African Americans with head and neck squamous cell carcinoma (HNSCC) have a lower survival rate than whites. This study investigated the functional importance of ancestry-informative single-nucleotide polymorphisms (SNPs) in HNSCC and also examined the effect of functionally important genetic elements on racial disparities in HNSCC survival. METHODS: Ancestry-informative SNPs, RNA sequencing, methylation, and copy number variation data for 316 oral cavity and laryngeal cancer patients were analyzed across 178 DNA repair genes. The results of expression quantitative trait locus (eQTL) analyses were also replicated with a Gene Expression Omnibus (GEO) data set. The effects of eQTLs on overall survival (OS) and disease-free survival (DFS) were evaluated. RESULTS: Five ancestry-related SNPs were identified as cis-eQTLs in the DNA polymerase ß (POLB) gene (false discovery rate [FDR] < 0.01). The homozygous/heterozygous genotypes containing the African allele showed higher POLB expression than the homozygous white allele genotype (P < .001). A replication study using a GEO data set validated all 5 eQTLs and also showed a statistically significant difference in POLB expression based on genetic ancestry (P = .002). An association was observed between these eQTLs and OS (P < .037; FDR < 0.0363) as well as DFS (P = .018 to .0629; FDR < 0.079) for oral cavity and laryngeal cancer patients treated with platinum-based chemotherapy and/or radiotherapy. Genotypes containing the African allele were associated with poor OS/DFS in comparison with homozygous genotypes harboring the white allele. CONCLUSIONS: Analyses show that ancestry-related alleles could act as eQTLs in HNSCC and support the association of ancestry-related genetic factors with survival disparities in patients diagnosed with oral cavity and laryngeal cancer. Cancer 2017;123:849-60. © 2016 American Cancer Society.

High prevalence of discordant human papillomavirus and p16 oropharyngeal squamous cell carcinomas in an African American cohort.

BACKGROUND: Most studies on human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (SCC) have been performed on white Americans. Our study examined the incidence of HPV in an African American oropharyngeal SCC cohort and its survival. METHODS: African American patients with oropharyngeal SCC in a combined tumor registry were identified. HPV16 testing was performed by polymerase chain reaction (PCR) from DNA extracted from tumor blocks. The p16 staining was performed using standard immunohistochemistry. RESULTS: Forty-four patients were identified for analysis. Seventy-three percent of the tumors were HPV-positive. Only 39% of the patients who were HPV-positive were also p16-positive. Survival between all 3 tumor types, patients who tested HPV-positive/p16, HPV-positive/p16-positive, and HPV-negative/p16-negative was significantly different (p = .03). HPV/p16 status was significant on univariate and multivariate analysis. CONCLUSION: HPV oropharyngeal SCC is strongly present in this African American cohort. Two thirds of the patients who were HPV-positive were p16-negative. Greater study is needed to explain the high p16 negativity among this HPV-positive oropharyngeal SCC African American cohort. © 2015 Wiley Periodicals, Inc. Head Neck 38: E867-E872, 2016.

Advancing Cancer Control Through Research and Cancer Registry Collaborations in the Caribbean.

BACKGROUND: Few national registries exist in the Caribbean, resulting in limited cancer statistics being available for the region. Therefore, estimates are frequently based on the extrapolation of mortality data submitted to the World Health Organization. Thus, regional cancer surveillance and research need promoting, and their synergy must be strengthened. However, differences between countries outweigh similarities, hampering registration and availability of data. METHODS: The African-Caribbean Cancer Consortium (AC3) is a broad-based resource for education, training, and research on all aspects of cancer in populations of African descent. The AC3 focuses on capacity building in cancer registration in the Caribbean through special topics, training sessions, and biannual meetings. We review the results from selected AC3 workshops, including an inventory of established cancer registries in the Caribbean region, current cancer surveillance statistics, and a review of data quality. We then describe the potential for cancer research surveillance activities and the role of policymakers. RESULTS: Twelve of 30 Caribbean nations have cancer registries. Four of these nations provide high-quality incidence data, thus covering 14.4% of the population; therefore, regional estimates are challenging. Existing research and registry collaborations must pave the way and are facilitated by organizations like the AC3. CONCLUSIONS: Improved coverage for cancer registrations could help advance health policy through targeted research. Capacity building, resource optimization, collaboration, and communication between cancer surveillance and research teams are key to obtaining robust and complete data in the Caribbean.

High-risk cervical human papillomavirus infections among human immunodeficiency virus-positive women in the Bahamas.

BACKGROUND: High-risk (HR) HPV genotypes other than 16 and 18 have been detected in a significant proportion of immunocompromised females. We aim to evaluate the frequency of HR HPV genotypes in a population of HIV-positive Caribbean women. METHODS: One hundred sixty-seven consecutive, non-pregnant, HIV-positive females ≥18 years were recruited in this study. Each participant received a vaginal examination, PAP smear, and completed a questionnaire. DNA was extracted for HPV testing in 86 patients. RESULTS: Mean age was 39.1 years for women positive for HR HPV and 43.1 years for women negative for HR HPV (P value  = 0.040). 78% (130/167) of the women had HR HPV infections; the prevalence of abnormal cervical cytology was 38% among women who were HR HPV-positive compared to women who were HR HPV-negative (22%). Fifty-one percent of the 86 women with available genotype carried infections with HPV 16 and/or HPV 18; genotypes of unknown risk were also frequently observed. Women who had a CD4+ count of ≤200 had 7 times increased odds of carrying HR HPV infection in comparison to women with CD4+>200. CONCLUSIONS: HR HPV infections in HIV infected females may consist of more than just HPV 16 and 18, but also HPV 52 and 58. Further studies are needed to determine whether HPV 52 and 58 play a significant role in the development of cervical cytological abnormalities in HIV+ women.

The 4th Bi-annual international African-Caribbean Cancer Consortium conference: building capacity to address cancer health disparities in populations of African descent.

This is a brief summary of the 4(th) International Meeting of the African-Caribbean Cancer Consortium (AC3), organized and sponsored by Fox Chase Cancer Center (FCCC), and held on July 21-22, 2012 at the Lincoln University Graduate Center, Lincoln Plaza, Philadelphia, Pennsylvania. AC3 investigators gathered in Philadelphia, PA to present the results of our ongoing collaborative research efforts throughout the African Diaspora. The general theme addressed cancer health disparities and presentations represented all cancer types. However, there was particular emphasis on women's cancers, related to human papillomavirus (HPV) and human immunodeficiency virus (HIV) infections.

Multicenter study of human papillomavirus and the human papillomavirus vaccine: knowledge and attitudes among people of African descent.

OBJECTIVE: To compare knowledge and attitudes of human papillomavirus (HPV) and the vaccine between different cultures of African descent. METHODS: A cross-sectional survey of 555 African-Americans and Afro-Caribbeans residing in the US and the Bahamas (BHM) was conducted. RESULTS: General knowledge about HPV and the HPV vaccine differed between the two countries significantly. Bahamian respondents were less likely to have higher numbers of correct knowledge answers when compared to Americans (Adjusted Odds Ratio [Adj. OR] 0.47, 95% Confidence Interval [CI] 0.30-0.75). Older age, regardless of location, was also associated with answering fewer questions correctly (Adj. OR 0.61, 95% CI 0.40-0.92). Attitudes related to HPV vaccination were similar between the US and BHM, but nearly 80% of BHM respondents felt that children should not be able to receive the vaccine without parental consent compared to 57% of American respondents. CONCLUSIONS: Grave lack of knowledge, safety and cost concerns, and influence of parental restrictions may negatively impact vaccine uptake among African-American and Afro-Caribbean persons. Interventions to increase the vaccine uptake in the Caribbean must include medical provider and parental involvement. Effective strategies for education and increasing vaccine uptake in BHM are crucial for decreasing cervical cancer burden in the Caribbean.

Outbreak of poliomyelitis in Hispaniola associated with circulating type 1 vaccine-derived poliovirus.

An outbreak of paralytic poliomyelitis occurred in the Dominican Republic (13 confirmed cases) and Haiti (8 confirmed cases, including 2 fatal cases) during 2000-2001. All but one of the patients were either unvaccinated or incompletely vaccinated children, and cases occurred in communities with very low (7 to 40%) rates of coverage with oral poliovirus vaccine (OPV). The outbreak was associated with the circulation of a derivative of the type 1 OPV strain, probably originating from a single OPV dose given in 1998-1999. The vaccine-derived poliovirus associated with the outbreak had biological properties indistinguishable from those of wild poliovirus.