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Differences in the frequency of pharmacogenomic variants may influence inter-population variability in drug efficacy and risk of adverse drug reactions (ADRs). We investigated the diversity of ∼ 4500 genetic variants in key drug-biotransformation and -response genes among three South East Asian populations compared with individuals of European ancestry. We compared rates of reported ADRs in these Asian populations to determine if the allelic differentiation corresponded to an excess of the associated ADR. We identified an excess of ADRs related to clopidogrel in Singaporean Chinese, consistent with a higher frequency of a known risk variant in CYP2C19 in that population. We also observed an excess of ADRs related to platinum compounds in Singaporean CHS, despite a very low frequency of known ADR risk variants, suggesting the presence of additional genetic and non-genetic risk factors. Our results point to substantial diversity at specific pharmacogenomic loci that may contribute to inter-population variability in drug response phenotypes.

Background: Population-based drug utilization databases that comprehensively capture an entire population's drug dispensing are scarce resources for epidemiological studies. This study aimed to examine the prescription-dispensing rates in children in British Columbia (BC) and describe the differences in the dispensing of medications in BC versus children in the United States (US) and Europe., Methods: The study population was children aged 0-17 years in BC (n = 855,541). Children with at least one prescription dispensed in 2007 were identified using the provincial outpatient prescription dispensing database. All prescriptions were grouped on the basis of the Anatomical Therapeutic Chemical (ATC) classification system. Prevalence of drug dispensing was calculated in each age group, gender, and therapeutic class., Results: Fifty-five percent of BC children were dispensed at least one prescription in 2007. Antibacterials for systemic use, dermatological corticosteroids, and drugs for obstructive airway diseases were commonly dispensed in each age group. The percentage of children who received psychoanaleptics was two to five times higher than rates reported in European countries, but 30% lower than rates reported in the US., Conclusions: Half of the BC population <18 years received at least one prescription in 2007. Significant variations in drug dispensing were highlighted between BC, the US, and Europe. Future studies are needed to examine the outcomes of the prescribing in terms of benefit and harm. A variety of factors (e.g., disease prevalence rates, drug prescribing preferences) are likely to contribute to disparate dispensing of specific drug classes and should be principal factors in the investigation.

Vaccinomics aims to integrate variability information from multiple levels of the biological hierarchy from genome to proteome to metabolome, and ways in which these biological parts interact with each other and the environment. Vaccinomics holds significant promise as a new public health tool in designing safer and more effective vaccines for both developed and developing countries. Vaccinomics tests that are envisioned to be used in tandem with vaccine-based health interventions could permit an informed forecast of individual and subpopulation variations in immune responses to vaccines, reduce adverse effects, and contribute to a foundation for rational and directed use of vaccines. A proactive, multidisciplinary engagement with vaccinomics is now timely and much needed in order to develop regulations that best ensure the protection of the public and promote the transition of vaccinomics innovations from discovery to real-life public health applications. This article examines and compares the regulatory oversight of vaccinomics tests in Canada, the United States, and Europe. Recent trends in these jurisdictions suggest that regulatory agencies view personalized genomics/omics medicine, such as vaccinomics, as a desirable goal. At the same time, proposals to increase oversight could impact progress in the field and affect the availability of vaccinomics tests in public health practice and the diagnostic test market. The comparative analysis of vaccinomics in three jurisdictions presented in this article highlights both the convergence and divergence of regulatory oversight. In a rapidly emerging field such as vaccinomics that is pivotal for global public health, achieving better harmonization of policies may be an advantageous target, while ensuring that symmetry exists between the goals of public safety and promoting public health innovation. We suggest it is now timely to proactively initiate a constructive dialogue among all stakeholders (publics, policymakers, researchers, private sector, governments) to foster the development of appropriately targeted regulatory policies in this field.