抗体做冻融研究时需要冻融5次的参考依据是哪个?
处方与工艺
老师培训说国外普遍是10次,国内做5次,时间是3个月,参考的依据是哪个?
2018-01-14 21:59 小铃铛     
2个回答

生产中原液应该都是分装好的,不太可能多次复溶,还是应该考虑运输情况;如果产品是冷链的话,贮存运输都是要求非常严格的,出现冻融的机率也是非常低(远低于常温产品),按照冻融试验指南(已经很恶劣的条件了)应该足够了。

2018-01-14 22:03 嘉汇     

生物制品稳定性指南,ICH、国内的并没有限定冻融次数;

生物样品方法验证指南中,FDAEMA 对次数给出了解释

 

例如在 FDA Guidance for Industry: Bioanalytical Method Validation 指南中,对于分析方法是色谱、或 配体偶联方法,都要求:

Freeze and Thaw Stability

During freeze/thaw stability evaluations, the freezing and thawing of stability samples should mimic the intended sample handling conditions to be used during sample analysis.Stability should be assessed for a minimum of three freeze-thaw cycles.

EMA Bioanalytical method validation Adopted 20110721

The number of cycles in the freeze-thaw stability should equal or exceed that of the freeze/thaw cycles of study samples.

2018-01-15 09:29 Hang