Risking Refuse-to-Receive [Regulatives / Guidelines]

posted by Helmut Homepage – Vienna, Austria, 2018-03-28 13:25 (2278 d 01:10 ago) – Posting: # 18599
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Hi sudy,

❝ […] can we use RSABE approach in case if we get ISCV-reference > 30% for any one of the PK parameter Cmax or partial AUCs, instead of using 90% CI calculation to prove the bioequivalence?


The guidance clearly states:

The 90% confidence intervals of the geometric mean test/reference (T/R) ratios for the above five Cmax and AUC metrics (Cmax, AUC0-T1, AUCT1-T2, AUCT2-T3, AUC0-∞) should fall within the limits of 80-125%.


Without a controlled correspondence you will risk an RTR because according to

❝ The OGD recommendation did not discuss anything about this case, as we know that methylphenidate is not a HVD.


In my experience you will get the highest CV in the first partial AUC of the fasting study. I never saw a high CV of Cmax… A CVwR >30% of AUC0-3 is extremely unlikely.

@John: Other experiences?

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