Publications by authors named "Douglas Lowy"

Background: The Costa Rica HPV Vaccine Trial provided initial evidence that 1 dose of the bivalent human papillomavirus (HPV) vaccine induces stabilizing antibody levels that may provide extended protection against HPV-16/18 infections. We report antibody seropositivity and stability 11 to 16 years after vaccination.

Methods: We invited a random subset of Costa Rica HPV Vaccine Trial participants (n = 398) who had received 3 doses and all women (n = 203) who had received 1 dose at 18 to 25 years of age to follow-up visits 11, 14, and 16 years after vaccination.

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One-dose prophylactic HPV vaccination of pre-adolescents may reduce cervical cancer deaths dramatically in lower-resource settings, but the benefits of achieving immediate high coverage among pre-adolescents would not be realized for 20 to 40 years. Prophylactic vaccine efficacy is reduced after sexual debut, and current therapeutic intervention candidates designed to treat existing HPV infections or precancerous lesions have yielded insufficient evidence to warrant widespread use. However, we are developing a feasible, scalable, high-quality cervical screening approach that could prevent hundreds of thousands of deaths, while we work to achieve high coverage of one-dose vaccination for adolescent cohorts.

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Canonical RAS signaling, including PI3K/AKT- and RAF/MEK-dependent activities, results mainly from RAS•GTP interaction with its effectors at the plasma membrane. Here, we identified a fundamental, oncogenic, noncanonical RAS•GTP activity that increases XPO1-dependent export of nuclear protein cargo into the cytoplasm and is independent of PI3K/AKT and RAF/MEK signaling. This RAS-dependent step acts downstream from XPO1 binding to nuclear protein cargo and is mediated by a perinuclear protein complex between RAS•GTP and RanGAP1 that facilitates hydrolysis of Ran•GTP to Ran•GDP, which promotes release of nuclear protein cargo into the cytoplasm.

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Background: Cancer has substantial health, quality-of-life, and economic impacts. Screening may decrease cancer mortality and treatment costs, but the cost of screening in the United States is unknown.

Objective: To estimate the annual cost of initial cancer screening (that is, screening without follow-up costs) in the United States in 2021.

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Article Synopsis
  • The AS04-adjuvanted HPV16/18 vaccine shows strong effectiveness against targeted HPV types and partial protection against related types, with variations in efficacy observed based on viral lineages and genetic differences.
  • In a study involving nearly 8,000 women, the vaccine's effectiveness against HPV31 was significantly lower for lineage-B compared to lineage-A, highlighting the impact of specific genetic variants on vaccine response.
  • Findings reveal important implications for global health, indicating that differential vaccine efficacy against various HPV variants could influence cancer risk across different populations and regions.
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  • SARS-CoV-2 vaccination leads to changes in antibody levels and characteristics, which can influence protection against infection.
  • After the initial vaccine series, IgG levels decrease over time while antibody avidity (binding strength) increases; however, this trend is reversed after a third booster dose, which boosts both IgG levels and avidity.
  • Comparison between the two mRNA vaccines shows that one (BNT162b2) results in higher antibody avidity than the other (mRNA-1273) six months after the third dose.
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Unlabelled: The integration of HPV DNA into human chromosomes plays a pivotal role in the onset of papillomavirus-related cancers. HPV DNA integration often occurs by linearizing the viral DNA in the E1/E2 region, resulting in the loss of a critical viral early polyadenylation signal (PAS), which is essential for the polyadenylation of the E6E7 bicistronic transcripts and for the expression of the viral E6 and E7 oncogenes. Here, we provide compelling evidence that, despite the presence of numerous integrated viral DNA copies, virus-host fusion transcripts originate from only a single integrated HPV DNA in HPV16 and HPV18 cervical cancers and cervical cancer-derived cell lines.

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Analyses of inequalities related to prevention and cancer therapeutics/care show disparities between countries with different economic standing, and within countries with high Gross Domestic Product. The development of basic technological and biological research provides clinical and prevention opportunities that make their implementation into healthcare systems more complex, mainly due to the growth of Personalized/Precision Cancer Medicine (PCM). Initiatives like the USA-Cancer Moonshot and the EU-Mission on Cancer and Europe's Beating Cancer Plan are initiated to boost cancer prevention and therapeutics/care innovation and to mitigate present inequalities.

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Data-driven basic, translational, and clinical research has resulted in improved outcomes for children, adolescents, and young adults (AYAs) with pediatric cancers. However, challenges in sharing data between institutions, particularly in research, prevent addressing substantial unmet needs in children and AYA patients diagnosed with certain pediatric cancers. Systematically collecting and sharing data from every child and AYA can enable greater understanding of pediatric cancers, improve survivorship, and accelerate development of new and more effective therapies.

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Article Synopsis
  • This study compares the immune responses of two mRNA vaccines (mRNA-1273 and BNT162b2) against SARS-CoV-2 to natural infection by measuring anti-Spike antibody levels and avidity in serum samples from different age groups.
  • Results showed that both vaccines produced higher antibody levels and avidity than natural infection, with mRNA-1273 demonstrating superior antibody levels four months post-vaccination.
  • Additionally, mRNA-1273 induced greater avidity than BNT162b2 at one month, though this was only significantly maintained in the younger age group by four months.
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  • The COVID-19 pandemic created a rush for accurate tests to measure antibodies against SARS-CoV-2, leading to many assays being developed without strict quality control, resulting in varied performance levels.
  • This study evaluates the reliability and effectiveness of different serology assays, including commercial and in-house tests, and supports the use of the WHO International Standard as a way to harmonize results across different methods.
  • Findings suggest that while commercial assays are highly specific and in-house assays are sensitive, binding immunoassays can be a practical alternative to more complex neutralization tests, and all assay types perform well after standardization, underscoring that robust serology tests are available for better understanding antibody responses.
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Background: The World Health Organization recommends a 1- or 2-dose human papillomavirus (HPV) vaccination schedule for females aged 9 to 20 years. Studies confirming the efficacy of a single dose and vaccine modifications are needed, but randomized controlled trials are costly and face logistical and ethical challenges. We propose a resource-efficient single-arm trial design that uses untargeted and unaffected HPV types as controls.

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This retrospective observational study aimed to gain a better understanding of the protective duration of prior SARS-CoV-2 infection against reinfection. The objectives were two-fold: to assess the durability of immunity to SARS-CoV-2 reinfection among initially unvaccinated individuals with previous SARS-CoV-2 infection, and to evaluate the crude SARS-CoV-2 reinfection rate and associated risk factors. During the pandemic era time period from February 29, 2020, through April 30, 2021, 144,678,382 individuals with SARS-CoV-2 molecular diagnostic or antibody test results were studied.

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Chronic infection by several "high-risk" human papillomavirus (HPV) types has been causally implicated in several forms of anogenital and oropharyngeal cancers. Now, HPV42, which is usually classified as a "low-risk" type, can be listed as the main cause of digital papillary adenocarcinoma, an uncommon malignant tumor of the fingers and toes. See related article by Leiendecker et al.

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We developed cProSite, a website that provides online genomics, proteomics, and phosphoproteomics analysis for the data of The National Cancer Institute's Clinical Proteomic Tumor Analysis Consortium (CPTAC). This tool focuses on comparisons and correlations between different proteins and mRNAs of tumors and normal tissues. Our website is designed with biologists and clinicians in mind, with a user-friendly environment and fast search engine.

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Vaccines against cancer-causing microbes could potentially prevent 15% of cancers worldwide and thereby address global disparities in cancer control. To reach this potential, the established hepatitis B virus and human papillomavirus vaccines must be more widely implemented, and effective vaccines against Epstein-Barr virus, hepatitis C virus, and Helicobacter pylori must be developed.

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Purpose: Continued smoking after the diagnosis of cancer can markedly worsen oncology treatment side effects, cancer outcomes, cancer mortality, and all-cause mortality. Conversely, mounting evidence demonstrates that smoking cessation by patients with cancer improves outcomes. A cancer diagnosis often serves as a teachable moment, characterized by high motivation to quit.

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Article Synopsis
  • The SARS-CoV-2 pandemic created a need for precise serological testing to assess immunity from infections and vaccines, leading to the development of a U.S. serology standard.
  • The Frederick National Laboratory for Cancer Research established this standard and calibrated it against a WHO international standard to ensure consistent results in serology assays.
  • A study involving eight laboratories demonstrated that using the U.S. serology standard significantly reduced variability in test results, making it a key resource for harmonizing data globally.
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Tumor infiltration by T cells profoundly affects cancer progression and responses to immunotherapy. However, the tumor immunosuppressive microenvironment can impair the induction, trafficking, and local activity of antitumor T cells. Here, we investigated whether intratumoral injection of virus-derived peptide epitopes could activate preexisting antiviral T cell responses locally and promote antitumor responses or antigen spreading.

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Background: In women vaccinated against human papillomavirus (HPV), reductions in cervical disease and related procedures results in more women having intact transformation zones, potentially increasing the risk of cervical lesions caused by non-vaccine-preventable HPV types, a phenomenon termed clinical unmasking. We aimed to evaluate HPV vaccine efficacy against cervical intraepithelial neoplasia grade 2 or worse (CIN2+) and cervical intraepithelial neoplasia grade 3 or worse (CIN3+) attributed to non-preventable HPV types in the long-term follow-up phase of the Costa Rica HPV Vaccine Trial (CVT).

Methods: CVT was a randomised, double-blind, community-based trial done in Costa Rica.

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Given the renewed interest in vaccine development sparked by the COVID-19 pandemic, we are revisiting the current state of vaccine development for cancer prevention and treatment. Experts discuss different vaccine types, their antigens and modes of action, and where we stand on their clinical development, plus the challenges we need to overcome for their broad implementation.

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Background: We investigated the impact of human papillomavirus (HPV) vaccination on the performance of cytology-based and HPV-based screening for detection of cervical precancer among women vaccinated as young adults and reaching screening age.

Methods: A total of 4632 women aged 25-36 years from the Costa Rica HPV Vaccine Trial were included (2418 HPV-vaccinated as young adults and 2214 unvaccinated). We assessed the performance of cytology- and HPV-based cervical screening modalities in vaccinated and unvaccinated women to detect high-grade cervical precancers diagnosed over 4 years and the absolute risk of cumulative cervical precancers by screening results at entry.

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Article Synopsis
  • - The HPV vaccine demonstrates long-lasting effectiveness and stable antibody levels even after just one dose, as shown in a study tracking HPV16 antibody avidity over 11 years among women in Costa Rica who received either one or three vaccine doses.
  • - Women who received only one dose had lower HPV16 antibody avidity compared to those who received three doses, but both groups showed similar patterns of increased avidity in the first three years, remaining stable for the subsequent eight years.
  • - The study found that women who were seropositive for HPV16 at the time of vaccination had lower antibody avidity than seronegative women, but both groups showed similar vaccine efficacy against HPV16 infections, suggesting that even lower avidity levels can still offer
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