Relevance of genomics to healthcare and nursing practice.

Much has been learned over the past 1 0 years about the relevance of genomic variation to health, to the risk for both rare and common diseases, and to treatment responsiveness (Feero, Guttmacher, & Collins, 2010). The identification of genomic differences that play a role in disease provides information that is enhancing our understanding about the biology of disease, resulting in new and more personalized therapies and influencing healthcare decisions. Experts predict that expanding research discoveries coupled with new technologies will be effectively translated into approaches for clinical care (Green & Guyer, 2011). As this Journal of Nursing Scholarship (JNS) issue illustrates, it is important for the practicing nurse to be aware of this information now. Through its focus on health promotion, caring, and the understanding of individuals, including their relationships with families, the community, and society, nursing brings an important perspective to the application of genomics. Nurses have a responsibility to be informed and to inform other healthcare professionals, individuals, families, and communities of the potential benefits and challenges of genomics.Understanding the genomic science behind care decisions for conditions commonly seen by the practicing nurse has the potential to improve care outcomes. Many of these opportunities already exist (Figure), but much work remains to ensure the effective integration of genomic information in routine clinical practice. For example, the hypothetical patient Gabe has been admitted to the hospital for atrial fibrillation and is a candidate for pharmacogenomic testing to inform his warfarin dosing. The patient asks the nurse whether or not he should have this test. That nurse needs to know about the nature of the test, whether the results will influence decisions made about Gabe's treatment, the potential implications of test results for his family, and where to find more information to answer his questions and to contribute to his plan of care. Evidence suggests that the majority of nurses are unprepared to deal with these questions (Thompson & Brooks, 2011). Nurses play a role in creating an infrastructure that supports the delivery of services that utilize genomic information. They can also influence policies related to the utilization of genomic information through appreciation of the associated ethical, legal, and social issues. With a full understanding of the relevance as well as limitations of genomic information, nurses can play an important role in the application of genomics to clinical care.In the past, genetic and genomic testing was focused on small areas within the genome. However, the advent of "next-generation" DNA sequencing methods has led to remarkable reductions in the costs of genome sequencing (Pettersson, Lundeberg, &· Ahmadian, 2009; Snyder, Jiang Du, & Gerstein, 2010). Indeed, we are entering the era of the "$1,000 genome"- that is, the ability to sequence someone's entire genome for $1,000 or less (National Human Genome Research Institute, 2010), a cost rivaling many diagnostic tests and thus deemed realistic for routine clinical application. While these technology advances have to date outpaced our capacity for harnessing this information to improve health, the coming decade will bring a steady stream of examples where genomic information is shown to be a valued component of clinical practice (Phimister, Feero, & Guttmacher, 2012). The purpose of this Genomic Special Issue is to provide evidence reviews about the genomics of common healthcare conditions with relevance for nursing practice and services. This issue consists of articles that provide an overview of:* the current and emerging science and technology, such as whole-genome sequencing (with implications for international healthcare);* the state of the evidence about genomic variation and clinical applications for common diseases (e. …