1. Hoath C, Chang L, Ramalingam Iyer K et al. Post-approval changes for biopharmaceutical drug-substance and drug-product manufacture: regulatory complexity and impact. BioProcess Int; 2016. bioprocessintl.com
2. Guidelines on procedures and data requirements for changes to approved biotherapeutic products. WHO technical report series no. 1011, Annex 3; 2018. pp. 181–275.
3. Guidelines on procedures and data requirements for changes to approved vaccines. WHO technical report series no. 993, Annex 4; 2015. pp. 175–259.
4. Good Reliance Practices in regulatory decision-making: high-level principles and recommendations. WHO Drug Information, vol 34, no. 2, Annex 10; 2020. pp. 201–230.
5. International Coalition of Medicines Regulatory Authorities (ICMRA). Statement from Global Regulators on the Value of Regulatory Reliance; 2021. Statement from Global MedicinesRegulators on the Value of Regulatory Reliance | International Coalition of Medicines RegulatoryAuthorities (ICMRA)