TY - JOUR Y1 - 2025/02/10/ KW - Critical quality attributes KW - Microneedle array patch (MAP) KW - Nomenclature KW - Regulatory science KW - Test methods KW - Transdermal system ID - discovery10203562 SP - 402 PB - Elsevier BV TI - White paper: Understanding, informing and defining the regulatory science of microneedle-based dosage forms that are applied to the skin A1 - Dul, M A1 - Alali, M A1 - Ameri, M A1 - Burke, MD A1 - Creelman, BP A1 - Dick, L A1 - Donnelly, RF A1 - Eakins, MN A1 - Frivold, C A1 - Forster, AH A1 - Gilbert, PA A1 - Henke, S A1 - Henry, S A1 - Hunt, D A1 - Lewis, H A1 - Mistilis, JJ A1 - Park, JH A1 - Prausnitz, MR A1 - Robinson, DK A1 - Hernandez, CAR A1 - Shin, J A1 - Speaker, TJ A1 - Strasinger, C A1 - Taylor, KMG A1 - Zehrung, D A1 - Birchall, JC A1 - Jarrahian, C A1 - Coulman, SA UR - https://doi.org/10.1016/j.jconrel.2024.11.056 N2 - The COVID-19 pandemic has accelerated pre-clinical and clinical development of microneedle-based drug delivery technology. However the regulatory science of this emerging dosage form is immature and explicit regulatory guidance is limited. A group of international stakeholders has formed to identify and address key issues for the regulatory science of future products that combine a microneedle device and active pharmaceutical ingredient (in solid or semi-solid state) in a single entity that is designed for application to the skin. Guided by the principles of Quality by Design (QbD) and informed by consultation with wider stakeholders, this ?White Paper? describes fundamental elements of the work in an effort to harmonise understanding, stimulate discussion and guide innovation. The paper discusses classification of the dosage form (combination/medicinal product), the regulatory nomenclature that is likely to be adopted and the technical vocabulary that best describes its form and function. More than twenty potential critical quality attributes (CQAs) are identified for the dosage form, and a prioritisation exercise identifies those CQAs that are most pertinent to the dosage form and that will likely require bespoke test methods (delivered dose, puncture performance) or major adaptions to established compendial test methods (dissolution). Hopefully the work will provide a platform for the development of dosage form specific guidance (from regulatory authorities and/or international pharmacopoeias), that expedites clinical translation of safe and effective microneedle-based products. N1 - This work is licensed under a Creative Commons License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ VL - 378 EP - 415 JF - Journal of Controlled Release AV - public ER -