Q1 Stability Testing of Drug Substances and Drug Products; International Council for Harmonisation; Draft Guidance for Industry; Availability

<NOTICE> DEPARTMENT OF HEALTH AND HUMAN SERVICES <SUBAGY>Food and Drug Administration</SUBAGY> <DEPDOC>[Docket No. FDA-2025-D-1106]</DEPDOC> <SUBJECT>Q1 Stability Testing of Drug Substances and Drug Products; International Council for Harmonisation; Draft Guidance for Industry; Availability</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Food and Drug Administration, HHS. <HD SOURCE="HED">ACTION:</HD> Notice of availability. <SUM> <HD SOURCE="HED">SUMMARY:</HD> The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft guidance for industry entitled “Q1 Stability Testing of Drug Substances and Drug Products.” The draft guidance was prepared under the auspices of the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH). The draft guidance outlines stability data expectations for drug substances and drug products to support drug product marketing, including marketing authorization applications and, where applicable, drug master files. This draft guidance is a consolidated revision of the ICH Q1A(R2), Q1B, Q1C, Q1D, Q1E, and Q5C series of stability guidances, published November 2003, March 1996, May 1997, January 2003, June 2004, and July 1996, respectively. The revision also provides stability related guidance for product categories such as advanced therapy medicinal products, vaccines, and other complex biological products including combination products that were not previously covered under the existing stability guidances. The draft guidance is intended to provide an internationally harmonized approach to conducting and presenting data on stability testing for drug substances and drug products, as well as providing alternative, scientifically justified approaches that may be encountered due to scientific considerations and characteristics of the data being evaluated. </SUM> <DATES> <HD SOURCE="HED">DATES:</HD> Submit either electronic or written comments on the draft guidance by August 25, 2025 to ensure that the Agency considers your comment on this draft guidance before it begins work on the final version of the guidance. </DATES> <HD SOURCE="HED">ADDRESSES:</HD> You may submit comments on any guidance at any time as follows: <HD SOURCE="HD2">Electronic Submissions</HD> Submit electronic comments in the following way: • <E T="03">Federal eRulemaking Portal: https://www.regulations.gov.</E> Follow the instructions for submitting comments. Comments submitted electronically, including attachments, to <E T="03">https://www.regulations.gov</E> 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 <E T="03">https://www.regulations.gov.</E> • 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”). <HD SOURCE="HD2">Written/Paper Submissions</HD> Submit written/paper submissions as follows: • <E T="03">Mail/Hand Delivery/Courier (for written/paper submissions):</E> 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.” <E T="03">Instructions:</E> All submissions received must include the Docket No. FDA-2025-D-1106 is for “Q1 Stability Testing of Drug Substances and Drug Products.” Received comments will be placed in the docket and, except for those submitted as “Confidential Submissions,” publicly viewable at <E T="03">https://www.regulations.gov</E> 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 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 <E T="03">https://www.regulations.gov.</E> 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: <E T="03">https://www.govinfo.gov/content/pkg/FR-2015-09-18/pdf/2015-23389.pdf.</E> <E T="03">Docket:</E> For access to the docket to read background documents or the electronic and written/paper comments received, go to <E T="03">https://www.regulations.gov</E> 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. You may submit comments on any guidance at any time (see 21 CFR 10.115(g)(5)). Submit written requests for single copies of the draft guidance to the Division of Drug Information, Center for Drug Evaluation and Research, Food and Drug Administration, 10001 New Hampshire Ave., Hillandale Building, 4th Floor, Silver Spring, MD 20993-0002, or the Office of Communication, Outreach and Development, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 71, Rm. 3128, Silver Spring, MD 20993-0002. Send one self-addressed adhesive label to assist that office in processing your requests. The guidance may also be obtained by mail by calling Center for Biologics Evaluation and Research at 1-800-835-4709 or 240-402-8010. See the <E T="02">SUPPLEMENTARY INFORMATION</E> section for electronic access to the draft guidance document. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> <E T="03">Regarding the guidance:</E> Ee-Sunn Chia, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 21, Rm. 2550, Silver Spring, MD 20993-0002, 240-402-8909, email: <E T="03">Ee-Sunn.Chia@fda.hhs.gov;</E> or Ramjay Vatsan Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 71, Rm. 6010, 240-402-8364, email: <E T="03">ramjay.vatsan@fda.hhs.gov.</E> <E T="03">Regarding the ICH:</E> Brooke Dal Santo, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 51, Rm. 6304, Silver Spring, MD 20993-0002, 301-348-1967, email: <E T="03">Brooke.DalSanto@fda.hhs.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">I. Background</HD> FDA is announcing the availability of a draft guidance for industry entitled “Q1 Stability Testing of Drug Substances and Drug Products.” The draft guidance was prepared under the auspices of ICH. ICH seeks to achieve greater regulatory harmonization worldwide to ensure that safe, effective, high-quality medicines are developed, registered, and maintained in the most resource-efficient manner. By harmonizing the regulatory requirements in regions around the world, ICH guidelines enhance global drug development, improve manufacturing standards, and increase the availability of medications. For example, ICH guidelines have substantially reduced duplicative clinical studies, prevented unnecessary animal studies, standardized the reporting of important safety information, and standardized marketing application submissions. The six Founding Members of the ICH are the FDA; the Pharmaceutical Research and Manufacturers of America; the European Commission; the European Federation of Pharmaceutical Industries Associations; the Japanese Ministry of Health, Labour, and Welfare; and the Japanese Pharmaceutical Manufacturers Association. The Standing Members of the ICH Association include Health Canada and Swissmedic. ICH membership continues to expand to include other regulatory authorities and industry associations from around the world (refer to <E T="03">https://www.ich.org/</E> ). ICH works by engaging global regulatory and industry experts in a detailed, science-based, and consensus-driven process that results in the development of ICH guidelines. The regulators around the world are committed to consistently adopting these consensus-based guidelines, realizing the benefits for patients and for industry. As a Founding Regulatory Member of ICH, FDA plays a major role in the development of each of the ICH guidelines, which FDA then adopts and issues as guidance for industry. FDA's guidance documents do not establish legally enf ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 15k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━