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merck hpv

M Wallace, K Middelkoop, P Smith, C Pike, T Bennie, J Chandia, G Churchyard, G Gray, M H Latka, M Mathebula, M Nchabeleng, S Roux, C Slack, A Strode, L-G Bekker
BACKGROUND: HIV/AIDS remains a leading cause of death in adolescents (aged 15 - 25 years), and in sub-Saharan Africa HIV-related deaths continue to rise in this age group despite a decline in both adult and paediatric populations. This is attributable in part to high adolescent infection rates and supports the urgent need for more efficacious prevention strategies. In particular, an even partially effective HIV vaccine, given prior to sexual debut, is predicted to significantly curb adolescent infection rates...
March 28, 2018: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
Warner K Huh, Elmar A Joura, Anna R Giuliano, Ole-Erik Iversen, Rosires Pereira de Andrade, Kevin A Ault, Deborah Bartholomew, Ramon M Cestero, Edison N Fedrizzi, Angelica L Hirschberg, Marie-Hélène Mayrand, Angela Maria Ruiz-Sternberg, Jack T Stapleton, Dorothy J Wiley, Alex Ferenczy, Robert Kurman, Brigitte M Ronnett, Mark H Stoler, Jack Cuzick, Suzanne M Garland, Susanne K Kjaer, Oliver M Bautista, Richard Haupt, Erin Moeller, Michael Ritter, Christine C Roberts, Christine Shields, Alain Luxembourg
BACKGROUND: Primary analyses of a study in young women aged 16-26 years showed efficacy of the nine-valent human papillomavirus (9vHPV; HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58) vaccine against infections and disease related to HPV 31, 33, 45, 52, and 58, and non-inferior HPV 6, 11, 16, and 18 antibody responses when compared with quadrivalent HPV (qHPV; HPV 6, 11, 16, and 18) vaccine. We aimed to report efficacy of the 9vHPV vaccine for up to 6 years following first administration and antibody responses over 5 years...
November 11, 2017: Lancet
Julie Ahn, Shiwen Peng, Chien-Fu Hung, Richard B S Roden, Simon R Best
OBJECTIVE: Although it has been shown that prophylactic vaccination can induce genital immunity, there is inadequate information on human papillomavirus (HPV) vaccine-induced oral immunity, which is of particular interest due to HPV-associated oropharyngeal malignancies and recurrent respiratory papillomatosis. Therefore, we assessed the efficacy of various HPV vaccines against oral HPV pseudovirus (PsV) infection in mice. STUDY DESIGN: Preclinical scientific investigation...
January 2018: Laryngoscope
Fei Yin, Yajun Wang, Na Chen, Dunquan Jiang, Yefeng Qiu, Yan Wang, Mei Yan, Jianping Chen, Haijiang Zhang, Yongjiang Liu
Persistent infection with human papillomavirus (HPV) is a key factor in the development of precancerous lesions and invasive cervical cancer. Prophylactic vaccines to immunize against HPV are an effective approach to reducing HPV related disease burden. In this study, we investigated the immunogenicity and dosage effect of a trivalent HPV 16/18/58 vaccine (3vHPV) produced in Escherichia coli (E.coli), with Gardasil quadrivalent vaccine (4vHPV, Merck & Co.) as a positive control. Sera collected from rhesus macaques vaccinated with three dosage formulations of 3vHPV (termed low-, mid-, and high-dosage formulations, respectively), and the 4vHPV vaccine were analyzed by both Pseudovirus-Based Neutralization Assay (PBNA) and Enzyme-Linked Immunosorbent Assay (ELISA)...
June 2017: Papillomavirus Research
Staci L Sudenga, B Nelson Torres, Matthys H Botha, Michele Zeier, Martha E Abrahamsen, Richard H Glashoff, Susan Engelbrecht, Maarten F Schim Van der Loeff, Louvina E Van der Laan, Siegfried Kipping, Douglas Taylor, Anna R Giuliano
BACKGROUND: HPV antibodies are a marker of past exposure to the virus. Our objective was to assess HPV serostatus pre- and post-vaccination among HIV-negative women. METHODS: Women aged 16-24 years old were randomized in a placebo controlled trial utilizing the 4-valent HPV (4vHPV) vaccine (NCT01489527, Participants (n=389) received the 4vHPV vaccine or placebo following a three dose schedule. Sera were collected at Day 1 and Month 7 for assessment of HPV 6, 11, 16, and 18 neutralizing antibody levels using a multiplex competitive Luminex immunoassay (Merck) based on detecting the L1 capsid antigen for each HPV type...
June 2017: Papillomavirus Research
Zheng Quan Toh, Fiona M Russell, Rita Reyburn, James Fong, Evelyn Tuivaga, Tupou Ratu, Cattram D Nguyen, Rachel Devi, Mike Kama, Silivia Matanitobua, Sepehr N Tabrizi, Suzanne M Garland, Rohit Sinha, Ian Frazer, Lisi Tikoduadua, Joseph Kado, Eric Rafai, Edward K Mulholland, Paul V Licciardi
Background: The duration of antibody response following reduced human papillomavirus (HPV) vaccine doses has not been determined. We compared the antibody responses in girls previously vaccinated with zero, 1, 2, or 3 doses of quadrivalent HPV vaccine (4vHPV; Gardasil, Merck) 6 years previously. Methods: A prospective cohort study was undertaken in 200 Fijian girls 15-19 years of age. Approximately equal numbers of girls from 2 main ethnic groups (Fijians of Indian descent [FID] and Indigenous Fijians [iTaukei]) in Fiji were recruited for each dosage groups...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
Chaevia Clendinen, Yapei Zhang, Rebecca N Warburton, Donald W Light
BACKGROUND: Nearly all of the 500,000 new cases of cervical cancer and 270,000 deaths occur in middle or lower income countries. Yet the two most prevalent HPV vaccines are unaffordable to most. Even prices to Gavi, the Vaccine Alliance, are unaffordable to graduating countries, once they lose Gavi subsidies. Merck and Glaxosmithkline (GSK) claim their prices to Gavi equal their manufacturing costs; but these costs remain undisclosed. We undertook this investigation to estimate those costs...
November 21, 2016: Vaccine
Beata Biesaga, Anna Janecka, Anna Mucha-Małecka, Agnieszka Adamczyk, Sława Szostek, Dorota Słonina, Krzysztof Halaszka, Marcin Przewoźnik
The aim of the present study was to compare HPV16 detection by quantitative polymerase chain reaction (qPCR) in relation to the quantity and quality of DNA isolated from 21 formalin fixed and paraffin embedded (FFPE) head and neck cancer tissues by three commercially available kits: EX-WAX™ DNA Extraction Kit (M) (Merck Millipore, Darmstadt, Germany), QIAamp(®) DNA FFPE Tissue (Q) (Qiagen, Hilden, Germany) and ReliaPrep™ FFPE gDNA Miniprep System (P) (Promega, Madison, USA). Quantity of extracted DNA was assessed spectrophometrically and fluorometrically...
October 2016: Journal of Virological Methods
Sung Jong Lee, Andrew Yang, T C Wu, Chien Fu Hung
Cervical cancer is the fourth most lethal women's cancer worldwide. Current treatments against cervical cancer include surgery, radiotherapy, chemotherapy, and anti-angiogenic agents. However, despite the various treatments utilized for the treatment of cervical cancer, its disease burden remains a global issue. Persistent infection of human papillomavirus (HPV) has been identified as an essential step of pathogenesis of cervical cancer and many other cancers, and nation-wide HPV screening as well as preventative HPV vaccination program have been introduced globally...
September 2016: Journal of Gynecologic Oncology
Tanguy Y Seiwert, Barbara Burtness, Ranee Mehra, Jared Weiss, Raanan Berger, Joseph Paul Eder, Karl Heath, Terrill McClanahan, Jared Lunceford, Christine Gause, Jonathan D Cheng, Laura Q Chow
BACKGROUND: Patients with recurrent or metastatic squamous cell carcinoma of the head and neck have few treatment options. We aimed to assess the safety, tolerability, and antitumour activity of pembrolizumab, a humanised anti-programmed death receptor 1 (PD-1) antibody, in patients with PD-L1-positive recurrent or metastatic squamous cell carcinoma of the head and neck. METHODS: This study was an open-label, multicentre, phase 1b trial of patients with recurrent or metastatic squamous cell carcinoma of the head and neck...
July 2016: Lancet Oncology
Vikrant Chadrakant Sangar, Balasaheb Ghongane, Gaurav Mathur
The casual relationship concerning Human papillomaviruses (HPV) and cervical cancer is already established. Therefore, such HPV-associated malignancies might be prevented by prophylactic HPV vaccines. From 2009, two prophylactic HPV L1 Virus-Like Particle vaccines namely, Gardasil®; - quadrivalent (Merck) and Cervarix™ - bivalent (GlaxoSmithKline) are widely commercially available. By Aug 2014, 58 countries had introduced HPV vaccination in their national immunization program; this has led to numerous publications on safety and real world effectiveness...
2016: Reviews on Recent Clinical Trials
Delphine R Nelson, Alicia M Neu, Alison Abraham, Sandra Amaral, Donald Batisky, Jeffrey J Fadrowski
BACKGROUND AND OBJECTIVES: There is a disproportionate burden of human papillomavirus (HPV) -related genital tract disease in patients with CKD and kidney transplantation; therefore, the potential effect of the quadrivalent HPV vaccine (Gardasil; Merck GmbH, Darmstadt, Germany) is profound. Immune abnormalities associated with CKD and immunosuppression may prevent optimal vaccine response. Our objective was to determine antibody response to the HPV vaccine in adolescent girls with CKD...
May 6, 2016: Clinical Journal of the American Society of Nephrology: CJASN
Janine T Bryan, Barry Buckland, Jennifer Hammond, Kathrin U Jansen
In 2006, the first human papillomavirus (HPV) virus-like particle (VLP) vaccine was licensed. Gardasil(®), the quadrivalent HPV 6, 11, 16 and 18 recombinant VLP vaccine (4vHPV), developed by Merck demonstrated remarkable efficacy in prevention of important clinical pre-cursors to cervical cancer and genital warts. The vaccine was designed to protect against HPV 16 and 18 that cause ∼70% of cervical cancers and HPV 6 and 11 that cause ∼90% of genital warts. Initially, Gardasil(®) was indicated in the United States for women 9-26 years of age for the prevention of HPV 16 and 18-related cervical, vulvar and vaginal cancer, HPV 6, 11, 16 and 18-related genital intraepithelial neoplasia and the prevention of HPV 6 and 11-related genital warts...
June 2016: Current Opinion in Chemical Biology
Huachun Zou, Sepehr N Tabrizi, Andrew E Grulich, Jane S Hocking, Suzanne M Garland, Catriona S Bradshaw, Alyssa M Cornall, Christopher K Fairley, Marcus Y Chen
Men who have sex with men (MSM) are at risk for human papillomavirus (HPV)-related anal cancer. Few data exist on antibody responses following incident anogenital infection with HPV in teenage MSM. A cohort of 200 MSM aged 16-20 years from Melbourne, Australia were assessed at baseline, 3, 6 and 12 months. At each visit anal and penile swabs were collected for HPV DNA and serum for HPV antibodies for genotypes 6, 11, 16 and 18 (Merck's Multiplex Assays using Luminex). The main outcome, seroconversion, was defined as the detection of HPV antibodies following a negative antibody result for the same HPV type at baseline...
August 1, 2016: International Journal of Cancer. Journal International du Cancer
Roosmarijn Luttmer, Maaike G Dijkstra, Peter J F Snijders, Peter G A Hompes, Divera T M Pronk, Isabelle Hubeek, Johannes Berkhof, Daniëlle A M Heideman, Chris J L M Meijer
STUDY QUESTION: Is the presence of human papillomavirus (HPV) in semen associated with impairment of semen quality? SUMMARY ANSWER: In a large cohort of males seeking fertility evaluation, no associations were observed between seminal HPV presence and semen parameters. WHAT IS KNOWN ALREADY: HPV is commonly detected in semen samples. Whether the presence of HPV is related to impairment of semen quality, remains unclear. STUDY DESIGN, SIZE, DURATION: This cross-sectional study included a cohort of 430 males...
February 2016: Human Reproduction
Nancy S Handler, Marc Z Handler, Slawomir Majewski, Robert A Schwartz
As of December 2014, there were 3 approved vaccines for human papillomavirus (HPV): bivalent Cervarix (GlaxoSmithKline, New York, NY), quadrivalent Gardasil (Merck and Co, Kenilworth, NJ), and 9-valent Gardasil-9 (Merck and Co). The average cost per dose is $120, with a recommended 3-dose course. The quadrivalent vaccine is the most widely administered worldwide. As with the bivalent and 9-valent vaccines, the vaccine is considered safe, although concerns have been raised. In addition to immunization against the targeted HPV types, there is evidence that there is cross protection against other types of HPV...
November 2015: Journal of the American Academy of Dermatology
Arrigo Fruscalzo, Ambrogio P Londero, Serena Bertozzi, Ralf J Lellè
Two vaccines focused on the prevention of HPV-related diseases have been introduced in the last decade, the quadrivalent vaccine Gardasil and the bivalent vaccine Cervarix. They are targeted to prevent precancerous and cancerous lesions not only of the cervix, but also of the vulva, vagina, anal and head-neck region. Furthermore, the protection of the quadrivalent vaccine Gardasil includes also genital warts and recurrent respiratory Papillomatosis, two benign conditions with high socio-economic impact. Although their efficacy in reducing the burden of HPV-related pathologies has been already documented, second-generation HPV vaccines are being developed in order to overcome major limitations, above all the cost of production, distribution and acceptance, thus promoting an easier access to vaccination, especially in developing countries...
February 2016: Minerva Medica
Anna R Giuliano, Kimberly Isaacs-Soriano, B Nelson Torres, Martha Abrahamsen, Donna J Ingles, Bradley A Sirak, Manuel Quiterio, Eduardo Lazcano-Ponce
BACKGROUND: The quadrivalent (types 6/11/16/18) human papillomavirus (HPV) vaccine, Gardasil, has demonstrated efficacy against persistent HPV infection and associated anogenital disease in males. The goal of this Phase II trial was to establish the immunogenicity and safety of Gardasil among mid-adult men ages 27-45 years. METHODS: One hundred and fifty men from Tampa, FL, US, and Cuernavaca, Mexico who met eligibility criteria (male, 27-45 years old, completed four years of follow-up in the HPV Infection in Men (HIM) natural history study) were enrolled...
October 13, 2015: Vaccine
Mauricio Hernández-Ávila, Leticia Torres-Ibarra, Margaret Stanley, Jorge Salmerón, Aurelio Cruz-Valdez, Nubia Muñoz, Rolando Herrero, Ignacio F Villaseñor-Ruíz, Eduardo Lazcano-Ponce
The cost of HPV vaccines and the need for 3 doses remains a barrier for their inclusion in routine vaccination schedules for girls in low and middle income countries. In a non-inferiority study, we aimed to compare the immunogenicity of a standard 3 doses and a 2 doses schedule. We enrolled 450 participants in an open-label non-randomized clinical trial to evaluate the immunogenicity induced at different ages by the licensed HPV6/11/16/18 quadrivalent vaccine in a 2 doses schedule (0-6 months, n = 150 girls aged 9-10 y) and 3 doses schedule (0, 2, and 6 months; n = 150 girls aged 9-10 y and n=150 women aged 18 to 24 years)...
2016: Human Vaccines & Immunotherapeutics
Mohammad Nasir Uddin, Samir A Kouzi, Muhammad Delwar Hussain
Human Papillomaviruses (HPV) are a diverse group of small non-enveloped DNA viruses. Some HPVs are classified as low-risk as they are very rarely associated with neoplasia or cancer in the general population, and cause lenient warts. Other HPVs are considered as high-risk types because they are responsible for several important human cancers, including cervical cancer, a large proportion of other anogenital cancers, and a growing number of head and neck cancers. Transmission of HPV occurs primarily by skin-to-skin contact...
2015: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
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