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发表于 2016-11-17 19:27:05
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2 Do CGMPs require that forced degradation studies always be conducted of the drug product when determining if a drug product stability test method is stability-indicating? 在确定一个药品稳定性测试方法是否具有稳定性指示性时,CGMP是否要求都对药品都进行强降解试验?
No. Drug product stress testing (forced degradation) may not be necessary when the routes of degradation and the suitability of the analytical procedures can be determined through use of the following:
不是。如果降解途径和分析方法的适当性可以通过使用以下资料确定时,不一定要进行药品强降解试验:
• data from stress testing of drug substance
• 原料药的强降解试验数据
• reference materials for process impurities and degradants
• 工艺杂质和降解产物的对照物质
• data from accelerated and long-term studies on drug substance
• 原料药加速和长期稳定性试验数据
• data from accelerated and long-term studies on drug product
• 制剂的加速和长期稳定性试验数据
Additional supportive information on the specificity of the analytical methods and on degradation pathways of the drug substance may be available from literature sources.
从文献中也可以获得关于分析方法专属性和原料药降解途径的更多支持性信息。
Section 211.165(e) of the CGMP regulations states that the accuracy, sensitivity, specificity, and reproducibility of test methods shall be established and documented. Further, section 211.166(a)(3) requires that stability test methods be reliable, meaningful, and specific, which means that the content of active ingredient, degradation products, and other components of interest in a drug product can be accurately measured without interference, often called "stability-indicating."
CGMP法规的第211.165(e)部分说应建立并记录分析方法的准确性、灵敏度、专属性和重复性。还有,第211.166(a)(3)部分要求稳定性分析方法是可靠的、有意义的以及具有专属性,这意味着可以准确测定制剂中活性成分、产物和其它有意义成分的含量,而不受到干扰,通常被称为“稳定性指示性”。
The CGMP regulations do not specify what techniques or tests are to be used to ensure that one’s test methods are stability-indicating. However, evaluating the specificity of the test methods during forced degradation studies (i.e., exposing drug to extremes of pH, temperature, oxygen, etc.) of drug substance and drug product often is necessary to ensure that stability test methods are stability-indicating. But in certain circumstances conducting a forced degradation study of just the drug substance may be sufficient to evaluate the stability-indicating properties of a test method.
CGMP法规并没有指定用于确保分析方法具有稳定性指示的技术或测试。但是,为了确保稳定性试验所用分析方法具备稳定性指示性,在原料药和制剂强降解研究(即将药物暴露于极端的pH值、温度、氧气等环境)中评估一个分析方法的专属性通常是有必要的。而在一定情形下,仅仅对原料药进行强降解试验可能就足以评估分析方法的称定性指示性特性了。
Generally, in determining whether it is necessary to conduct forced degradation studies of the drug product, the specificity of the test method should be evaluated for its ability to assay drug substance, degradants, and impurities, in the presence of each other, without interference. The evaluation also should provide assurance that there is not a potential for interaction between drug substance, degradants, impurities, excipients, and container-closure system during the course of the shelf-life of the finished drug product.
一般来说,在确定是否有必要对制剂实施强降解研究时, 应该对分析方法的专属性进行评估,查看其是否有能力在原料药、降解产物和杂质共存时对这些成分进行分析,而不会被干扰。评估还应保证原料药、降解产物、杂质、辅料和容器密闭系统之间在制剂成品的货架其内不会发生相互反应。
Last, the rationale for any decision made concerning the extent of the forced degradation studies conducted as well as the rationale for concluding that a test method is stability-indicating should be fully documented.
最后,要全面记录所实施的强降解试验的程度决策合理性,以及得到结论说一个分析方法具有稳定性指示性的合理性论证。
References 参考文献:
• 21 CFR 211.137: Expiration dating
• 21 CFR 211.137:有效期
• 21 CFR 211.165(e): Testing and release for distribution
• 21 CFR 211.165(e):检测和销售放行
• 21 CFR 211.166(a)(3): Stability testing
• 21 CFR 211.166(a)(3):稳定性测试
• Compliance Policy Guide, Section 480.100 (7132a.04), Requirements for Expiration Dating and Stability Testing
• 符合性政策指南,第480.100(7132a.04)部分,有效期和稳定性测试要求
Contact for further information:
Barry Rothman, CDER
barry.rothman@fda.hhs.gov
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