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###### Department of Health and Human Services

###### Food and Drug Administration

          - [Docket No. FDA-2024-N-2980]

# AGENCY:

Food and Drug Administration, HHS.

# ACTION:

Notice; reopening of the comment period.

# SUMMARY:

                        The Food and Drug Administration (FDA or the Agency) is reopening the comment period for the request for information and comments notice entitled “Evaluating the Immunogenicity Risk of Host Cell Proteins in Follow-On Recombinant Peptide Products,” published in the                         **Federal Register**                         of July 25, 2024. FDA is reopening the comment period to update comments and to receive any new information.                    

# DATES:

FDA is reopening the comment period on the request for information and comments notice published July 25, 2024 (89 FR 60436). Either electronic or written comments must be submitted by March 3, 2025.

# ADDRESSES:

                        You may submit comments as follows. Please note that late, untimely filed comments will not be considered. The                         *https://www.regulations.gov*                         electronic filing system will accept comments until 11:59 p.m. Eastern Time at the end of March 3, 2025. Comments received by mail/hand delivery/courier (for written/paper submissions) will be considered timely if they are received on or before that date.                    

### Electronic Submissions

Submit electronic comments in the following way:
      -  Federal eRulemaking Portal: https://www.regulations.gov.                      Follow the instructions for submitting comments. Comments submitted electronically, including attachments, to                      https://www.regulations.gov                      will be posted to the docket unchanged. Because your comment will be made public, you are solely responsible for ensuring that your comment does not include any confidential information that you or a third party may not wish to be posted, such as medical information, your or anyone else's Social Security number, or confidential business information, such as a manufacturing process. Please note that if you include your name, contact information, or other information that identifies you in the body of your comments, that information will be posted on                      https://www.regulations.gov. 
      - If you want to submit a comment with confidential information that you do not wish to be made available to the public, submit the comment as a written/paper submission and in the manner detailed (see “Written/Paper Submissions” and “Instructions”).

### Written/Paper Submissions

Submit written/paper submissions as follows:
      -  Mail/Hand Delivery/Courier (for written/paper submissions):                      Dockets Management Staff (HFA-305), Food and Drug Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.                
      - For written/paper comments submitted to the Dockets Management Staff, FDA will post your comment, as well as any attachments, except for information submitted, marked and identified, as confidential, if submitted as detailed in “Instructions.”

*Instructions:*                     All submissions received must include the Docket No. FDA-2024-N-2980 for “Evaluating the Immunogenicity Risk of Host Cell Proteins in Follow-On Recombinant Peptide Products; Request for Information and Comments.” Received comments, those filed in a timely manner (see                     **ADDRESSES**                    ), will be placed in the docket and, except for those submitted as “Confidential Submissions,” publicly viewable at                     *https://www.regulations.gov*                     or at the Dockets Management Staff between 9 a.m. and 4 p.m., Monday through Friday, 240-402-7500.                
      - Confidential Submissions—To submit a comment with confidential information that you do not wish to be made publicly available, submit your comments only as a written/paper submission. You should submit two copies total. One copy will include the information you claim to be confidential       ( print page 107148)                          with a heading or cover note that states “THIS DOCUMENT CONTAINS CONFIDENTIAL INFORMATION.” The Agency will review this copy, including the claimed confidential information, in its consideration of comments. The second copy, which will have the claimed confidential information redacted/blacked out, will be available for public viewing and posted on                      https://www.regulations.gov.                      Submit both copies to the Dockets Management Staff. If you do not wish your name and contact information to be made publicly available, you can provide this information on the cover sheet and not in the body of your comments and you must identify this information as “confidential.” Any information marked as “confidential” will not be disclosed except in accordance with  21 CFR 10.20  and other applicable disclosure law. For more information about FDA's posting of comments to public dockets, see  80 FR 56469 , September 18, 2015, or access the information at:                      https://www.govinfo.gov/​content/​pkg/​FR-2015-09-18/​pdf/​2015-23389.pdf. 

*Docket:*                     For access to the docket to read background documents or the electronic and written/paper comments received, go to                     *https://www.regulations.gov*                     and insert the docket number, found in brackets in the heading of this document, into the “Search” box and follow the prompts and/or go to the Dockets Management Staff, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852, 240-402-7500.                

# FOR FURTHER INFORMATION CONTACT:

Kunal Naik, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Silver Spring, MD 20993, 240-402-8717.

# SUPPLEMENTARY INFORMATION:

## I. Background

                    In the                     **Federal Register**                     of July 25, 2024 (89 FR 60436), FDA requested information and comments. Interested persons were originally given until September 23, 2024, to comment on evaluating and mitigating the immunogenicity risk of host cell proteins.                

Following publication of the July 25, 2024, notice, FDA received a request to allow interested persons additional time to comment. The requester asserted that the time period of 60 days was insufficient to respond fully to FDA's specific requests for comments and to allow potential respondents to thoroughly evaluate and address pertinent issues.

## II. Electronic Access

                    Persons with access to the internet may obtain relevant guidance at                     *https://www.fda.gov/​regulatory-information/​search-fda-guidance-documents/​clinical-pharmacology-considerations-peptide-drug-products.*

Dated: December 23, 2024.

P. Ritu Nalubola,

Associate Commissioner for Policy.

[FR Doc. 2024-31365 Filed 12-30-24; 8:45 am]

BILLING CODE 4164-01-P