Regulatory

RegulatoryGuideline · draft

Pharmacokinetics in Patients With Impaired Hepatic Function: Study Design, Data Analysis, and Impact on Dosage

The Food and Drug Administration (FDA) is announcing the availability of a draft guidance for industry titled "Pharmacokinetics in Patients with Impaired Hepatic Function: Study Design, Data Analysis, and Impact on Dosage." This guidance assists sponsors in the design and analysis of studies that assess the influence of hepatic impairment on the pharmacokinetics and, where appropriate, the pharmacodynamics of a drug, including therapeutic biological products. When final, this guidance will represent FDA's current thinking. FDA is also withdrawing the guidance for industry titled "Pharmacokinetics in Patients with Impaired Hepatic Function: Study Design, Data Analysis, and Impact on Dosing and Labeling" (May 2003), which formerly provided FDA's thinking relating to studies to assess the effect of hepatic impairment on the pharmacokinetics or pharmacodynamics of a drug and recommendations to include hepatic impairment information in labeling.

🇺🇸 FDA · Wed 02 Sep 2026

RegulatoryGuideline · draft

Compounding Animal Drugs From Bulk Drug Substances: Compounding Under CGMP in Federally-Registered Facilities; Draft Guidance for Industry; Availability; Agency Information Collection Activities; Proposed Collection; Comment Request

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a draft guidance for industry (GFI) #256B entitled "Compounding Animal Drugs from Bulk Drug Substances: Compounding under CGMP in Federally-Registered Facilities." This draft guidance, when finalized, will describe FDA's current thinking regarding the circumstances under which we generally do not intend to take action against the compounding of animal drug products from bulk drug substances (BDS) when done in accordance with Current Good Manufacturing Practice (CGMP) at drug production facilities that are registered with FDA.

🇺🇸 FDA · Fri 28 Aug 2026

RegulatoryGuideline · final

Evaluation of Therapeutic Equivalence

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry titled "Evaluation of Therapeutic Equivalence." This guidance explains FDA's thinking on therapeutic equivalence evaluations and therapeutic equivalence codes (TE codes). FDA's therapeutic equivalence evaluations are listed for multisource prescription drug products approved under the Federal Food, Drug, and Cosmetic Act (FD&C Act) in the active section of the "Approved Drug Products With Therapeutic Equivalence Evaluations" (commonly known as the Orange Book). These therapeutic equivalence evaluations have been prepared to serve as public information and advice to state health agencies, prescribers, and pharmacists to promote public education in the area of drug product selection and to foster containment of health care costs. This guidance finalizes the draft guidance of the same title issued in July 2022.

🇺🇸 FDA · Mon 24 Aug 2026

RegulatoryGuideline · draft

Product-Specific Guidances; Draft and Revised Draft Guidances for Industry

The Food and Drug Administration (FDA or Agency) is announcing the availability of additional draft and revised draft product-specific guidances. The draft guidances provide product-specific recommendations on, among other things, the design of bioequivalence (BE) studies to support abbreviated new drug applications (ANDAs). In the Federal Register of June 11, 2010, FDA announced the availability of a guidance for industry titled "Bioequivalence Recommendations for Specific Products" that explained the process that would be used to make product-specific guidances available to the public on FDA's website. The draft guidances identified in this notice were developed using the process described in that guidance.

🇺🇸 FDA · Mon 24 Aug 2026

RegulatoryGuideline · final

Frequently Asked Questions-Developing Potential Cellular and Gene Therapy Products; Final Guidance for Industry

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance titled "Frequently asked Questions--Developing Potential Cellular and Gene Therapy Products." The guidance document provides industry with answers to frequently asked questions (FAQs) and commonly faced issues that arise during the development of cellular and gene therapy (CGT) products. The FAQs represent common questions directed to the Agency and span multiple disciplines, including regulatory review; chemistry, manufacturing, and controls (CMC); pharmacology/toxicology; clinical; and clinical pharmacology. This guidance announced in this notice finalizes the draft guidance of the same title issued on November 19, 2024.

🇺🇸 FDA · Thu 20 Aug 2026

RegulatoryGuideline · draft

Potency Assessment of Active Immunotherapy Products

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft document titled "Potency Assessment of Active Immunotherapy Products." The draft guidance document provides recommendations for developing assays to assess potency as a part of a potency assurance strategy for active immunotherapy products (ACTIMPs). When finalized, this guidance will describe the FDA's current thinking regarding design, validation, and evaluation of potency tests for ACTIMPs. This guidance is intended to supplement the December 2023 draft guidance for industry, when finalized, on "Potency Assurance for Cellular and Gene Therapy Products" with additional advice and considerations specifically for ACTIMPs, including peptide- and-protein based ACTIMPs that are not cellular or gene therapy products.

🇺🇸 FDA · Thu 20 Aug 2026

RegulatoryGuideline · draft

Determining Whether To Submit an ANDA or a 505(b)(2) Application

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft guidance for industry titled "Determining Whether to Submit an ANDA or a 505(b)(2) Application." This draft guidance is intended to serve as a foundational guidance to assist applicants in determining which one of the abbreviated approval pathways under the Federal Food, Drug, and Cosmetic Act (FD&C Act) is appropriate for the submission of a marketing application to FDA. This draft guidance revises the guidance for industry titled "Determining Whether to Submit an ANDA or a 505(b)(2) Application" issued in May 2019 and, when finalized, will replace the 2019 guidance for industry.

🇺🇸 FDA · Tue 18 Aug 2026

RegulatoryGuideline · final

Type VII Veterinary Master File for Research and Development and Risk Reviews

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a final guidance for industry (GFI) #260 entitled "Type VII Veterinary Master File for Research and Development and Risk Reviews." This guidance describes FDA's current thinking regarding the use of Type VII Veterinary Master Files (Type VII VMFs). Type VII VMFs are appropriate for research and development of animal cells, tissues, and cell- and tissue-based products (ACTPs), gene therapies, and heritable intentional genomic alterations (IGAs) in animals.

🇺🇸 FDA · Mon 17 Aug 2026

RegulatoryGuideline · draft

Container Closure Systems for Human Drugs and Biological Products

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a draft guidance for industry entitled "Container Closure Systems for Human Drugs and Biological Products." This document provides guiding principles for evaluating the quality of container closure systems (CCSs) used to package drugs and biological products, for human use. This includes CCSs that are also device constituent parts of combination products and CCSs used to package the drug or biological product constituent parts of combination products.

🇺🇸 FDA · Fri 14 Aug 2026

RegulatoryGuideline · final

Evaluating the Safety of Antimicrobial New Animal Drugs With Regard to their Microbiological Effects on Bacteria of Human Health Concern

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a final guidance for industry (GFI) #152 entitled "Evaluating the Safety of Antimicrobial New Animal Drugs with Regard to their Microbiological Effects on Bacteria of Human Health Concern." This guidance document informs interested parties about FDA's current method for evaluating potential microbiological effects of antimicrobial new animal drugs on bacteria of human health concern as part of the new animal drug application process.

🇺🇸 FDA · Thu 06 Aug 2026

RegulatoryGuideline · draft

Assessing the Irritation and Sensitization Potential of Transdermal and Topical Delivery Systems for ANDAs; Revised Draft Guidance for Industry

The Food and Drug Administration (FDA or Agency) is announcing the availability of a revised draft guidance for industry titled "Assessing the Irritation and Sensitization Potential of Transdermal and Topical Delivery Systems for ANDAs." This revised draft guidance provides recommendations for the design and conduct of studies to evaluate the in vivo skin irritation (and sensitization, if applicable) potential of a proposed transdermal or topical delivery system (collectively referred to as TDS). The recommendations in this revised draft guidance relate to studies submitted in support of an abbreviated new drug application (ANDA). The revised draft guidance is intended to clarify FDA's recommendations and expectations related to in vivo skin irritation and in vivo combined skin irritation and sensitization studies. This draft guidance replaces the draft guidance "Assessing the Irritation and Sensitization Potential of Transdermal and Topical Delivery Systems for ANDAs" (April 2023).

🇺🇸 FDA · Mon 03 Aug 2026

RegulatoryGuideline · final

Assessing Adhesion With Transdermal and Topical Delivery Systems for ANDAs

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry titled "Assessing Adhesion With Transdermal and Topical Delivery Systems for ANDAs." This guidance provides recommendations for the design and conduct of studies evaluating the adhesion performance of a transdermal or topical delivery system (collectively referred to as TDS). Depending on the objectives of a generic TDS product development program, applicants may choose to evaluate TDS adhesion in studies performed to evaluate TDS adhesion only, or in studies performed with a combined purpose (e.g., for the simultaneous evaluation of adhesion and bioequivalence (BE) with pharmacokinetic (PK) endpoints). The recommendations in this guidance relate to studies submitted in support of an abbreviated new drug application (ANDA). The guidance replaces the draft guidance (Revision 2) "Assessing Adhesion With Transdermal and Topical Delivery Systems for ANDAs," issued on April 13, 2023.

🇺🇸 FDA · Mon 03 Aug 2026

RegulatoryGuideline · draft

Biosimilar and Interchangeable Biosimilar Products: Considerations for Container Closure Systems and Device Constituent Parts

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a draft guidance for industry entitled "Biosimilar and Interchangeable Biosimilar Products: Considerations for Container Closure Systems and Device Constituent Parts." This draft guidance is intended to help applicants develop container closure systems and device constituent parts for proposed biosimilar and interchangeable biosimilar products. This draft guidance expands on and clarifies the Agency's recommendations and expectations regarding the development of delivery devices and container closure systems described in Q.I.4 of the guidance for industry entitled "Questions and Answers on Biosimilar Development and the BPCI Act" and the guidance for industry entitled "Considerations in Demonstrating Interchangeability With a Reference Product" for biosimilar and interchangeable biosimilar products, respectively.

🇺🇸 FDA · Mon 03 Aug 2026

RegulatoryGuideline · draft

Product-Specific Guidances; Revised Draft Guidances for Industry

The Food and Drug Administration (FDA or Agency) is announcing the availability of additional revised draft product-specific guidances. The draft guidances provide product-specific recommendations on, among other things, the design of bioequivalence (BE) studies to support abbreviated new drug applications (ANDAs). In the Federal Register of June 11, 2010, FDA announced the availability of a guidance for industry entitled "Bioequivalence Recommendations for Specific Products" that explained the process that would be used to make product-specific guidances available to the public on FDA's website. The draft guidances identified in this notice were developed using the process described in that guidance.

🇺🇸 FDA · Wed 29 Jul 2026

RegulatoryGuideline · final

Cancer Clinical Trial Eligibility Criteria: Performance Status

The Food and Drug Administration (FDA, the Agency, or we) is announcing the availability of a final guidance for industry entitled "Cancer Clinical Trial Eligibility Criteria: Performance Status." This guidance is one in a series of guidances that provide recommendations regarding eligibility criteria for clinical trials of investigational drugs regulated by the Center for Drug Evaluation and Research (CDER) and the Center for Biologics Evaluation Research (CBER) for the treatment of cancer. Specifically, this guidance includes recommendations regarding expanding eligibility criteria to include patients with a wider range of performance status. This guidance finalizes the draft guidance of the same title issued on April 26, 2024.

🇺🇸 FDA · Tue 28 Jul 2026

RegulatoryGuideline · final

Cancer Clinical Trial Eligibility Criteria: Washout Periods and Concomitant Medications

The Food and Drug Administration (FDA, the Agency, or we) is announcing the availability of a final guidance for industry, institutional review boards (IRBs), and clinical investigators entitled "Cancer Clinical Trial Eligibility Criteria: Washout Periods and Concomitant Medications." This guidance is one in a series of guidances that provide recommendations regarding eligibility criteria for clinical trials of investigational drugs regulated by the Center for Drug Evaluation and Research (CDER) and the Center for Biologics Evaluation Research (CBER) for the treatment of cancer. Specifically, this draft guidance includes recommendations regarding the appropriate use of washout periods and concomitant medication exclusions. This guidance finalizes the draft guidance of the same title issued on April 26, 2024.

🇺🇸 FDA · Tue 28 Jul 2026

RegulatoryGuideline · final

Cancer Clinical Trial Eligibility Criteria: Laboratory Values

The Food and Drug Administration (FDA, the Agency, or we) is announcing the availability of a final guidance for industry, institutional review boards (IRBs), and clinical investigators entitled "Cancer Clinical Trial Eligibility Criteria: Laboratory Values." This guidance is one in a series of guidances that provide recommendations regarding eligibility criteria for clinical trials of investigational drugs regulated by the Center for Drug Evaluation and Research (CDER) and the Center for Biologics Evaluation Research (CBER) for the treatment of cancer. Specifically, this guidance includes recommendations for selecting appropriate laboratory values as trial eligibility criteria to avoid unjustified exclusions of trial participants. This guidance finalizes the draft guidance of the same title issued on April 26, 2024.

🇺🇸 FDA · Tue 28 Jul 2026

RegulatoryGuideline · final

Topical Dermatologic Corticosteroids: In Vivo Bioequivalence

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry titled "Topical Dermatologic Corticosteroids: In Vivo Bioequivalence." This guidance provides recommendations to applicants who submit abbreviated new drug applications (ANDAs) for topical dermatologic corticosteroids of all potency groups (referred to in this notice as topical corticosteroids). The guidance describes recommendations for an in vivo pharmacodynamic approach to demonstrate the bioequivalence (BE) of topical corticosteroids. This guidance provides clarity for potential ANDA applicants on the appropriate pilot dose duration vasoconstrictor response and pivotal vasoconstrictor BE studies and other recommendations for pharmacodynamic approaches to assess the BE of topical corticosteroids. This guidance finalizes the draft guidance of the same title "Topical Dermatologic Corticosteroids: In Vivo Bioequivalence" issued on October 24, 2022, and replaces the guidance for industry of the same title issued on June 2, 1995.

🇺🇸 FDA · Tue 14 Jul 2026

RegulatoryGuideline · final

Psychedelic Drugs: Considerations for Clinical Investigations

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry titled "Psychedelic Drugs: Considerations for Clinical Investigations." Because interest in the therapeutic potential of psychedelic drugs has been increasing and designing clinical trials to evaluate these compounds presents unique challenges, FDA developed the draft guidance to present foundational aspects for sponsors to consider. This final guidance provides general considerations for sponsors developing psychedelic drugs for the treatment of medical conditions (e.g., psychiatric disorders, substance use disorders) and discusses recommendations for clinical investigations psychedelic drugs. This guidance finalizes the draft guidance of the same title issued on June 26, 2023.

🇺🇸 FDA · Tue 14 Jul 2026

RegulatoryGuideline · draft

Quantitative Systems Pharmacology (QSP)-Based Dose Selection for Minimum Anticipated Biological Effect Level (MABEL) in First-in-Human (FIH) Trials

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a draft guidance for industry entitled "Quantitative Systems Pharmacology (QSP)-Based Dose Selection for Minimum Anticipated Biological Effect Level (MABEL) in First-in-Human (FIH) Trials." The guidance is intended to provide recommendations in the application of quantitative systems pharmacology (QSP) modeling when a minimum anticipated biological effect level (MABEL) in first-in- human (FIH), phase 1 trials for drugs and biological products is recommended. This guidance focuses on drugs and biological products for which the MABEL approach can be used to guide starting doses for FIH trials. This includes, but is not limited to, drugs and biological products that may cause cytokine release, T-cell activation, or other potent pharmacological reactions.

🇺🇸 FDA · Wed 24 Jun 2026

RegulatoryGuideline · draft

Master Protocols for Drug and Biological Product Development

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft guidance for industry entitled "Master Protocols for Drug and Biological Product Development." This draft guidance revises and replaces the previous draft guidance for industry of the same name issued on December 22, 2023. The draft guidance provides recommendations on the design and analysis of trials conducted under a master protocol as well as guidance on submissions to support regulatory review. The primary focus is on randomized trials utilizing a master protocol that are intended to contribute to a demonstration of safety and substantial evidence of effectiveness. The considerations in this guidance apply to a range of therapeutic areas. The draft guidance is intended to clarify the Agency's thinking on the use of master protocols in drug and biological product development.

🇺🇸 FDA · Wed 24 Jun 2026

RegulatoryGuideline · draft

Demonstrating Substantial Evidence of Effectiveness for Human Drug and Biological Products; Revised Draft Guidance for Industry

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a revised draft guidance for industry titled "Demonstrating Substantial Evidence of Effectiveness for Human Drug and Biological Products." FDA has revised and is reissuing this draft guidance in response to public comments and to changes in drug development by focusing on generating rigorous scientific evidence in the most efficient manner. Advances in our understanding of biological processes and the increasing availability of high-quality data have transformed the evidentiary landscape for drug development. Given these advances, the draft guidance discusses the many factors that can impact the strength of evidence of effectiveness for a drug and clarifies how sponsors can rely on one adequate and well-controlled clinical investigation with confirmatory evidence to satisfy the substantial evidence of effectiveness standard. When final, this guidance will replace the 1998 guidance titled "Providing Clinical Evidence of Effectiveness for Human Drug and Biological Products."

🇺🇸 FDA · Wed 24 Jun 2026

RegulatoryGuideline · final

International Cooperation on Harmonisation of Technical Requirements for Registration of Veterinary Medicinal Products; Effectiveness of Anthelmintics: General Recommendations

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry (GFI) #90 entitled "Effectiveness of Anthelmintics: General Recommendations." This guidance has been developed for veterinary use by the International Cooperation on Harmonisation of Technical Requirements for Registration of Veterinary Medicinal Products (VICH). The objective of this guidance is to provide study design recommendations that will facilitate the universal acceptance of the generated effectiveness data to fulfill the national/regional requirements for anthelmintic drugs in animal species.

🇺🇸 FDA · Wed 24 Jun 2026

RegulatoryGuideline · draft

Forms FDA 3542a and FDA 3542: Questions and Answers

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft guidance for industry titled "Forms FDA 3542a and FDA 3542: Questions and Answers." This draft guidance is intended to answer commonly asked questions regarding Forms FDA 3542a and FDA 3542, and to assist applicants in preparing and submitting these forms to FDA.

🇺🇸 FDA · Mon 15 Jun 2026

RegulatoryGuideline · final

Recommendations on Scale-Up and Postapproval Changes Guidances for Industry; Request for Comments; Reopening of the Comment Period

The Food and Drug Administration (FDA or the Agency) is reopening the comment period for the request for information and comments that appeared in the Federal Register of March 3, 2026. In the notice, FDA requested comments on the Agency's series of guidances for industry on scale-up and postapproval changes for specific dosage forms. The Agency is taking this action to allow interested persons additional time to submit comments.

🇺🇸 FDA · Thu 11 Jun 2026

RegulatoryGuideline · draft

Leveraging Prior Knowledge in the Development of Human Gene Therapy Products Incorporating Genome Editing

The Food and Drug Administration (FDA, Agency, or we) is announcing the availability of a draft document entitled "Leveraging Prior Knowledge in the Development of Human Gene Therapy Products Incorporating Genome Editing." The draft guidance document provides sponsors engaged in the development of human gene therapy (GT) products incorporating ex-vivo and in vivo genome editing (GE) of human somatic cells (GE products) with FDA's recommendations on the type of prior knowledge that may be scientifically appropriate to leverage to advance product development.

🇺🇸 FDA · Wed 03 Jun 2026

RegulatoryGuideline · draft

Drug and Device Manufacturer Communications With Payors, Formulary Committees, and Similar Entities-Questions and Answers; Revised Draft Guidance for Industry

The Food and Drug Administration (FDA or Agency) is announcing the availability of a revised draft guidance for industry titled "Drug and Device Manufacturer Communications With Payors, Formulary Committees, and Similar Entities--Questions and Answers." This revised draft guidance, when finalized, will provide answers to common questions regarding the communication of health care economic information (HCEI) about approved prescription drugs and approved/ cleared (as defined in the guidance) medical devices (collectively referred to in the guidance as approved/cleared medical products) by medical product manufacturers, packers, distributors, and their representatives (collectively referred to as firms) to payors, formulary committees, or other similar entities with knowledge and expertise in the area of health care economic analysis, carrying out their responsibilities for the selection of medical products for coverage or reimbursement (collectively referred to as payors).

🇺🇸 FDA · Wed 03 Jun 2026

RegulatoryGuideline · final

M15 General Principles for Model-Informed Drug Development; International Council for Harmonisation

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry entitled "M15 General Principles for Model-Informed Drug Development." The guidance was prepared under the auspices of the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH). The guidance provides general recommendations for the planning, model evaluation, and documentation of evidence derived from model-informed drug development (MIDD). It establishes a harmonized assessment framework (including the associated terminology) for the MIDD evidence. It also provides recommendations for related regulatory interactions, reporting, and submission. This guideline is intended to facilitate a multidisciplinary understanding of MIDD and associated evidence generation. The guidance finalizes the draft guidance of the same title issued on December 30, 2024.

🇺🇸 FDA · ICH · Wed 03 Jun 2026

RegulatoryGuideline · draft

Oncology Pharmaceuticals: Streamlined Nonclinical Safety Studies for Biologics and Conjugated Products

The Food and Drug Administration (FDA, the Agency, or we) is announcing the availability of a draft guidance for industry entitled "Oncology Pharmaceuticals: Streamlined Nonclinical Safety Studies for Biologics and Conjugated Products." When finalized, this guidance will assist sponsors in implementing streamlined approaches for general toxicology, for nonclinical safety assessments of certain oncology pharmaceuticals. The guidance is intended to facilitate drug development for biological products and conjugated products for the treatment of cancer while avoiding unnecessary animal use. The recommendations in this draft guidance are informed by data analysis of general toxicology studies and practices developed during the COVID-19 pandemic to reduce use of non-human primates.

🇺🇸 FDA · Mon 01 Jun 2026

RegulatoryGuideline · final

Bioequivalence Studies With Pharmacokinetic Endpoints for Drugs Submitted Under an Abbreviated New Drug Application

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry entitled "Bioequivalence Studies With Pharmacokinetic Endpoints for Drugs Submitted Under an ANDA." This guidance provides recommendations to applicants planning to include bioequivalence (BE) information in abbreviated new drug applications (ANDAs), ANDA amendments, and ANDA supplements. In addition, this guidance describes how to meet the BE requirements set forth in the Federal Food, Drug, and Cosmetic Act (FD&C Act) and FDA regulations. This guidance finalizes the draft guidance for industry of the same title issued on August 23, 2021.

🇺🇸 FDA · Fri 29 May 2026

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Information from official EMA, FDA, Federal Register and SEC records. Dates marked company-announced come from the company's own SEC filing; dates marked estimate are calculated, not official. Not investment or medical advice; always confirm on the source.