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[CLOSED] IG-050 Now Open for Public Comment

Updated: Dec 6, 2023

ICCBBA published the ISBT 128 Standard Chain of Identity (CoI) Identifier (ST-028) in December of 2022. Since that time, the new data structure has been implemented at many sites to document and maintain the chain of custody for patient-specific cell therapy manufacturing. An implementation guide has now been drafted to provide guidance on how the CoI Identifier can be utilized in a variety of scenarios. ICCBBA is soliciting public comment to further strengthen the usefulness of the draft implementation guide.

Comments should be directed to

The deadline for the draft IG-050 comment period has been extended until December 4th, 2023. We've been informed by some attentive commenters that their comment emails bounced. The email issue has been identified and fixed. If you've submitted comments on draft IG-050 and haven't received an acknowledgment, please resend them to We appreciate and value your input and apologize for any inconvenience. If you haven't submitted comments yet, kindly do so before December 4th.



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