Human epidermal growth factor receptor 2 (HER2) is a receptor tyrosine kinase that plays an oncogenic role in breast, gastric and other solid tumors. However, anti-HER2 therapies are only currently ...approved for the treatment of breast and gastric/gastric esophageal junction cancers and treatment resistance remains a problem. Here, we engineer an anti-HER2 IgG1 bispecific, biparatopic antibody (Ab), zanidatamab, with unique and enhanced functionalities compared to both trastuzumab and the combination of trastuzumab plus pertuzumab (tras + pert). Zanidatamab binds adjacent HER2 molecules in trans and initiates distinct HER2 reorganization, as shown by polarized cell surface HER2 caps and large HER2 clusters, not observed with trastuzumab or tras + pert. Moreover, zanidatamab, but not trastuzumab nor tras + pert, elicit potent complement-dependent cytotoxicity (CDC) against high HER2-expressing tumor cells in vitro. Zanidatamab also mediates HER2 internalization and downregulation, inhibition of both cell signaling and tumor growth, antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis (ADCP), and also shows superior in vivo antitumor activity compared to tras + pert in a HER2-expressing xenograft model. Collectively, we show that zanidatamab has multiple and distinct mechanisms of action derived from the structural effects of biparatopic HER2 engagement.
Atrial fibrillation (AF) affects more than 33 million individuals worldwide
and has a complex heritability
. We conducted the largest meta-analysis of genome-wide association studies (GWAS) for AF to ...date, consisting of more than half a million individuals, including 65,446 with AF. In total, we identified 97 loci significantly associated with AF, including 67 that were novel in a combined-ancestry analysis, and 3 that were novel in a European-specific analysis. We sought to identify AF-associated genes at the GWAS loci by performing RNA-sequencing and expression quantitative trait locus analyses in 101 left atrial samples, the most relevant tissue for AF. We also performed transcriptome-wide analyses that identified 57 AF-associated genes, 42 of which overlap with GWAS loci. The identified loci implicate genes enriched within cardiac developmental, electrophysiological, contractile and structural pathways. These results extend our understanding of the biological pathways underlying AF and may facilitate the development of therapeutics for AF.
Atrial fibrillation affects more than 33 million people worldwide and increases the risk of stroke, heart failure, and death. Fourteen genetic loci have been associated with atrial fibrillation in ...European and Asian ancestry groups. To further define the genetic basis of atrial fibrillation, we performed large-scale, trans-ancestry meta-analyses of common and rare variant association studies. The genome-wide association studies (GWAS) included 17,931 individuals with atrial fibrillation and 115,142 referents; the exome-wide association studies (ExWAS) and rare variant association studies (RVAS) involved 22,346 cases and 132,086 referents. We identified 12 new genetic loci that exceeded genome-wide significance, implicating genes involved in cardiac electrical and structural remodeling. Our results nearly double the number of known genetic loci for atrial fibrillation, provide insights into the molecular basis of atrial fibrillation, and may facilitate the identification of new potential targets for drug discovery.
The
® editorial board and team extend our sincerest appreciation to the dedicated reviewers who are indispensable for ensuring the quality and rigor of the scholarly articles published in our ...journal. Your meticulous evaluation, insightful feedback, and constructive critiques help us select the articles that we publish and improve the quality of the articles. We are grateful for your commitment to the peer-review process and your continued support. We look forward to a continued partnership to maintain the high standards of our publication.
Opinion statement
Research advocacy is an evolving concept and should be tailored for the colorectal cancer research community. Research advocacy training and evaluation must be designed for the ...patient community with their insight included at each step of engagement, training, and implementation. Patient advocates bring a great deal of expertise to the research review process, but it is important to ensure that their insight is appropriately placed, and they bring an appropriate orientation to the research process as the most informed patient. This can be accomplished in part by providing advocates with the proper training, employing universal core competencies, and applying principles of adult learning. Additionally, the research community, advocacy organizations, and industry partners must understand the need to diversify the voices that are being leveraged to guide research, recognizing the importance of adequate mental health tools and compensation commensurate with their experience. As a community, it is necessary that we create and implement training programs, as well as evaluate and measure their impact to continually improve and tailor the delivery of this specific education. Research advocacy has become a necessity to the field, and when implemented effectively, research advocates can have a significant impact on the delivery of health care research, improving health outcomes for all those affected by colorectal cancer.
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