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"Issues Under Current Consideration Regarding..."
  • Issues Under Current Consideration Regarding “Migration Studies”
  • Paul A. Mied, Ph.D.
  • FDA Industry IVD Roundtable
  • November 10, 2004
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Issues Under Current Consideration
Regarding “Migration Studies”
  • A study plan to validate the transfer of:


  • a)  a manual EIA or NAT assay to an instrument platform;


  • b)  a semi-automated assay to a fully automated assay;


  • c)  an assay from one instrument platform to another
  •      (new, improved, or different automation).


  • This study plan is applicable both to diagnostics and blood screening tests.


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The Central Concept of Our Current Consideration Regarding
“Migration Studies”
  • This study plan provides an alternative to clinical trials in restricted circumstances:
  •   When it’s essentially the same assay;
  •   When the reagents are unchanged;
  •   When similar technologies are used;
  •   When the changes are not expected to change the performance of the assay.
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Origin of Our Current Consideration Regarding “Migration Studies”
  •   Relevant guidance documents;
  •   Dialogues with the companies;
  •   Dialogues with the statisticians
  • – produced a study plan that is high powered   and is smaller than clinical trials.
  •   When companies feel it’s appropriate, clinical  trials following CDRH guidance remains an available option.



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 Our Current Consideration Regarding the Manufacturer’s Proposal for “Migration Studies”
  • We suggest the manufacturer’s proposal include:
  •  an adequate sample size (panels);
  •  testing at several field sites;
  •  parametric testing with statistical comparison of quantitative data (correlation coefficient).






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Our Current Consideration Regarding the Manufacturer’s Proposal for “Migration Studies”
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Contributors to FDA’s
Current Consideration
Regarding “Migration Studies”