•交换问答1.3和1.4的顺序以提供更合乎逻辑的顺序•在问答2.1中,对ICH Q11进行了指定,以定义半合成药物物质和产品•在Q&A 7.2和7.3中,其他解释是为何不足以将In Vivo突变数据添加到足够的情况下,以设置复杂性的含量。However, the Q&A enables the use of in vivo assay results to complement available data for a weight of evidence approach to support a higher limit on a case by case basis • In Q&A 8.1 conditions for using option 4 control strategies are explained in more detail • Q&A 8.3 was reworded to provide more clarity on expectations for control approaches of impurities introduced in the last synthetic step • In Q&A 9.2 additional specific references are added for recommendations on content ICH M7风险评估和控制策略的CTD中的位置