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【重磅中英对照】FDA的ANDA常见缺陷系列综述
Chemistry reviewers in the US Food and Drug Administration’s Office of Generic Drugs provide an overview of common deficiences cited througout the Chemistry, Manufacturing, and Controls section of abbreviated new drug applications (ANDAs).
The reviewers aim to assist ANDA sponsors in building quality into their submissions by clarifying components of the applications.
US FDA仿制药办公室化学审评员提供了在ANDA申请中有关化学、制造和控制章节常见缺陷的综述。
审评员的目的是通过阐明申请资料的内容以帮助ANDA申办者提高其提交资料的质量。
目前有4个系列综述,分别为:
Common Deficiencies in Abbreviated New Drug Applications
Part 1: Drug Substance 原料药
Part 2 Description, Composition, and Excipients 性状、组成及辅料
Part 3 Control of the Drug Product and Stability 制剂的控制及稳定性
Part 4 Manufacture (2.3.P.3)and Container Closure System (2.3.P.7) 制造及容器包装系统
Examples of commonly cited drug-substancerelated deficiencies in ANDAs
ANDA常见原料药相关缺陷举例
1. The Drug Master File (DMF) related to the drug substance is deficient, andthe holder has been notified. Please do not respond until the DMF holder has respondedto all the deficiencies.
1. 原料药相关的DMF有缺陷,已通知DMF持有者,请在DMF持有者回应了所有的缺陷后再回复。
2. The general properties section (S.1) of the ANDA fails to contain allrelevant information.
Please provide hygroscopicity, solubility as a function of pH, and meltingrange for the drug substance.
2. ANDA的一般属性项(S.1)下未包括所有相关信息。
请提供原料药的引湿性、pH相关的溶解度以及熔点。
3. Please revise the characterization section (S.3) to include full IUPACnames, structures, and classification of the impurities as process related and/ordegradation products.
3. 请修订特性项(S.3)以包含全部IUPAC名称、结构,以及按工艺相关和/或降解产物的杂质分类。
4. Please tighten or justify the proposed limits for the specified impuritiesbased on ICH Q3A on impurities in new drug substances recommendations takinginto account maximum daily dose (MDD).
请按照ICHQ3A关于新原料药杂质推荐应考虑的最大日用量(MDD)来提高特定杂质的所提议的限度或提供现有限度的合理性。
5. Please revise the unknown impurities criteria to be in-line with ICH Q3Arecommendations based on the MDD. Impurities observed above the recommended identificationthreshold should be identified, and impurities observed above the recommendedqualification threshold should be suitably qualified.
5. 请按照ICH Q3A基于MDD的建议修订未知杂质限度。所观测的杂质高于推荐的鉴定限度应进行鉴定,高于推荐的质控限度应进行适宜的控制。
6. Residual solvent criteria should be in line with the DMF holder's limits,as they are process related impurities. Please consult your DMFholder and revise your criteria accordingly.
Please consult your DMF holder to ensure all potential process impurities (e.g.,metal catalysts or reagents) are included or controlled in the proposed specifications.
6. 残留溶剂标准应与DMF持有者的限度一致,因为它们是工艺相关杂质。请咨询你的DMF持有者并相应地修订你的标准。
请咨询你的DMF持有者以确保所有的潜在工艺杂质(如:金属催化剂或试剂)已在提议的标准中包含或控制。
8. Please add justified specifications for the full range of particle sizedistribution. Alternatively, please provide justification that particle size isnot critical to the manufacturing process and drug product performance.
8. 请增加粒径分布全程的合理标准,或者提供粒径对于生产工艺和制剂性能不是关键性的理由。
9. Based on the literature, multiple polymorphic forms are possible. Pleaseprovide the form used and add a suitable control to ensure consistency in thedrug substance.
9. 根据文献,可能存在多晶型,请提供所用的晶型并增加适宜控制以确保原料药的一致性。
10. Please include a suitable test and justified criterion for water contentof the drug substance.
10. 请包含原料药中水分的适宜检测和合理的标准。
11. Please add a quantitative control of the counter- ionin your drug substance.
11. 请增加你的原料中平衡离子的定量控制。
12. Based on the chiral nature of the drug substance, please include a controlfor the relevant enantiomer and diastereomers.
12. 根据原料药的手性属性,请包含有关对映体和非对映体的控制。
13. In view of the chiral nature of the drug substance, please include achiral identity.
13. 鉴于原料药的手性属性,请包含手性鉴别。
14. We recommend a chiral assay of your drug substance, since it is proneto racemization on storage.
14. 因为你们的原料药在贮藏中有消旋化的倾向,我们建议采用手性含量测定。
15. As validated methods were transferred from the DMF holder, pleaseprovide verification data to demonstrate that the methods can be performed atthe proposed facility.
15. 因为验证的方法是从DMF持有者转移来的,请提供证明方法可以在所提的工厂进行的确认的数据。
16. Please provide a USP cross-over study for the assay method todemonstrate the proposed method is equivalent or better than the compendialmethod.
16. 请提供含量测定方法的USP交叉研究以证实所提议的方法相等或优于药典方法。
17. We recommend that a chromatographic method be proposed for theanalysis of drug substance assay.
17. 我们建议采用色谱方法来分析原料药的含量。
18. Please revise the certificate of analysis to report impurity resultsas discrete numerical values instead of as "conforms." If results arebelow the method limit of quantitation (LOQ), please report as less than LOQ;and if results are below the limits of detection (LOD), please report as less thanLOD or "none detected."
18. 请修订分析报告书以数值来替换“符合规定”来报告杂质结果。如果结果低地方法的定量限(LOQ),请报告为小于LOQ,如果结果小于定量限(LOD),则报告为小于LOD或“未检出”。
19. Please provide LOD and LOQ for all specified impurities and residualsolvents.
19. 请提供所有特定杂质和残留溶剂的LOD和LOQ。
20. Please provide information on allimpurity reference standards used, including lot number, source of the standard, andpurity.
20. 请提供所用的所有杂质参考标准品信息,包括批号、标准品的来源和纯度。
摘录部分内容如下:
Common Deficiencies in Abbreviated New Drug Applications
2.3.5.1 General Information一般信息
1. Solubility may be critical to determining the formulation, the process, and the performance of the product. A study of pH-related solubility and solubility in various organic solvents can also be used to justify manufacturing process steps and in providing information useful for developing suitable analytical methods.
1. 溶解度对于确定产品的制剂、工艺和性参可能是关键的,pH相关的溶解度和在不同有机溶剂中的溶解度的研究也可以用于确认生产工艺步骤以及给开发适宜分析方法提供有用的信息。
2. Knowledge of hygroscopicity may have an impact on choices made in the formulation or the manufacturing process; and may also provide insight into potential stability challenges if the drug substance or the formulation is sensitive to moisture.
2. 引湿性的知识可以影响剂型选择或生产工艺;如果原料药或制剂对湿敏感的话,还可以提供洞察潜在的稳定性挑战。
2.3.5.2 Manufacture.
1. With respect to section 2.3.S.2, reference is usually made to the associated DMF(s).lf questions are asked regarding the manufacturing of the drug substance, it is because of additional processing of the drug substance by the ANDA sponsor such as micronization. If the ANDA sponsor performs post-DMF drug substance processing such as micronization, the effect of such processes on drug substance stability should be addressed.
1. 对于2.3.S.2章节项下,通常引用相关的DMF,如果提及原料药生产的相关问题,是因为ANDA申办者对原料药进行了额外的加工,比如:微粉化。如果ANDA申办者进行了DMF后续的原料药加工,如:微粉化,这种加工对原料药稳定性的影响应进行研究。
2. An additional question that is often asked by reviewers in this section is whether the drug substance will be manufactured at multiple manufacturing sites. It is recommended that the DMF holder be consulted to address which site will be used to supply commercial material and if multiple sites will likely be used. This fact should be included in the exhibit batch information (i.e .. the possibility of manufacturing multiple exhibit batches). If there is a possibility of a change in source site after approval, this information should be included in the ANDA sponsor's regulatory strategy.
2. 在该章节项下,审评员经常会问到的另一个问题是原料药是否在多个生产地点生产,建议咨询DMF持有者哪个地点用于生产提供商业原料和是否多个生产地可能使用。这些情况应在展示批信息(即:生产多个展示批的可能性)。如何果在批准后可能变更生产地点,这些信息应包含在ANDA申办者管理策略中。
2.3.S.3 Characterization
justification should be provided for any potential impurities including. in some cases compendial impurities (e.g.USP monograph speCified impurities), that are process specific and are not specified in the drug·substance specifications.
应提供任何潜在杂质的确认,包括某些情况下工艺特定而不是原料药标准中所特定的药典杂质(如:USP专论特定杂质)的确认。
小贴士
Note: Exhibit Batches refer to any batch submitted in support of an NDA or ANDA. This includes bioequivalence, test, and commercial production batches of a drug product.
展示批指提交用于支持NDA或ANDA任何批,包括制剂BE、检测和商业生产批。
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rt 3 Control of the Drug Product and Stability.pdf
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Part 1 Drug Substance.pdf
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art 2 Description, Composition, and Excipients.pdf
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2.3.P.3)and Container Closure System (2.3.P.7).pdf
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