Aberrant observation in Reference (EU) for FDC [PK / PD]

posted by d_labes  – Berlin, Germany, 2011-08-10 12:07 (5022 d 19:43 ago) – Posting: # 7278
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Dear Hiren!

❝ What shall be done if T/R for single subject is around 1000 due to very low R value. No issues in clinical/bio analytical conduct.


❝ As per EU we calculated whether its AUC is less than 5% of average GLSM for reference.


❝ But the value comes to 5.80


:ponder: Did you calculate the geometric mean of the AUC of the Reference without the aberrant value?

EMA guidance page 14: "...A subject is considered to have very low plasma concentrations if its AUC is less than 5% of reference medicinal product geometric mean AUC (which should be calculated without inclusion of data from the outlying subject)..." Emphasis by me.

I would expect a ratio T/R around 20 if the aberrant value is 5% of the mean.

Regards,

Detlew

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