Measuring Progress of Regulatory Convergence and Cooperation Among Asia-Pacific Economic Cooperation (APEC) Member Economies in the Context of the COVID-19 Pandemic.

PURPOSE: Regulatory convergence and cooperation among medical product regulatory authorities are essential to delivering safe and efficacious products quickly to patients. The COVID-19 pandemic highlights the urgent need for streamlined regulatory approval processes-which can be achieved in part through regulatory convergence and cooperation-both to accelerate availability of COVID-19 vaccines, treatments and diagnostics and to maintain the availability of the existing medical products unrelated to COVID-19. METHODS: The Asia-Pacific Economic Cooperation (APEC) Life Sciences Innovation Forum (LSIF) established the Regulatory Harmonization Steering Committee (RHSC) in 2008 to advance regulatory convergence among APEC's 21 member economies. Key performance indicators (KPIs) were developed in 2018 to measure convergence. RESULTS: This paper reports survey results collected from KPI tracking in March 2020 from medical product regulatory authorities in all 21 APEC economies concerning areas of regulatory practice in which they could converge and cooperate. For example, from 2008 to 2020, there was a 14.3% increase in the number of APEC member economy regulatory authorities sharing Good Manufacturing Practices (GMP) Certificates and a 28% increase in the number of regulatory authorities accepting multisite licenses in that same period. In addition, this paper explores how APEC economies could realize a maximum level of regulatory convergence and cooperation. CONCLUSIONS: Convergence efforts within APEC can accelerate availability of medical products including that related to COVID-19 vaccines, treatments and diagnostics, while maintaining the availability of the existing medical products unrelated to COVID-19 vaccines and treatment. New KPIs and capability building are to be considered to enable a new era of innovation ushered in by COVID-19.

Chloroquine kills hair cells in zebrafish lateral line and murine cochlear cultures: Implications for ototoxicity.

Hearing and balance deficits have been reported during and following treatment with the antimalarial drug chloroquine. However, experimental work examining the direct actions of chloroquine on mechanoreceptive hair cells in common experimental models is lacking. This study examines the effects of chloroquine on hair cells using two common experimental models: the zebrafish lateral line and neonatal mouse cochlear cultures. Zebrafish larvae were exposed to varying concentrations of chloroquine phosphate or hydroxychloroquine for 1 h or 24 h, and hair cells assessed by antibody staining. A significant, dose-dependent reduction in the number of surviving hair cells was seen across conditions for both exposure periods. Hydroxychloroquine showed similar toxicity. In mouse cochlear cultures, chloroquine damage was specific to outer hair cells in tissue from the cochlear basal turn, consistent with susceptibility to other ototoxic agents. These findings suggest a need for future studies employing hearing and balance monitoring during exposure to chloroquine and related compounds, particularly with interest in these compounds as therapeutics against viral infections including coronavirus.