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

###### Food and Drug Administration

          - [Docket No. FDA-2010-D-0462]

# AGENCY:

 Food and Drug Administration, HHS.

# ACTION:

 Notice.

# SUMMARY:

 The Food and Drug Administration (FDA) is announcing the availability of a draft guidance for industry entitled “Chronic Hepatitis C Virus Infection: Developing Direct-Acting Antiviral Agents for Treatment.” The purpose of this guidance is to assist sponsors in all phases of development of direct-acting antiviral agents (DAAs), defined as agents that interfere with specific steps in the hepatitis C virus (HCV) replication cycle. The guidance outlines the types of nonclinical studies and clinical trials recommended throughout the drug development process to support approval of treatments for chronic hepatitis C (CHC), including in patients with compensated and decompensated cirrhosis and those co-infected with human immunodeficiency virus (HIV). The guidance also addresses pre-approval access in the form of treatment investigational new drug applications (INDs) and intermediate-sized safety protocols.

# DATES:

 Although you can comment on any guidance at any time (see 21 CFR 10.115(g)(5)), to ensure that the agency considers your comment on this draft guidance before it begins work on the final version of the guidance, submit either electronic or written comments on the draft guidance by November 15, 2010.

# ADDRESSES:

                         Submit written requests for single copies of the draft guidance to the Division of Drug Information, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 51, rm. 2201, Silver Spring, MD 20993-0002. Send one self-addressed adhesive label to assist that office in processing your requests. See the                         **SUPPLEMENTARY INFORMATION**                         section for electronic access to the draft guidance document.                    

                        Submit electronic comments on the draft guidance to                         *http://www.regulations.gov*. Submit written comments to the Division of Dockets Management (HFA-305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, Rockville, MD 20852.                    

      ( print page 55798)    

# FOR FURTHER INFORMATION CONTACT:

 Jeffrey Murray, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 22, rm. 6360, Silver Spring, MD 20993-0002, 301-796-1500.

# SUPPLEMENTARY INFORMATION:

## I. Background

FDA is announcing the availability of a draft guidance for industry entitled “Chronic Hepatitis C Virus Infection: Developing Direct-Acting Antiviral Agents for Treatment.” This draft guidance addresses nonclinical development, early phases of clinical development, phase 3 protocol designs, and endpoints for the treatment of CHC, including in patients who are treatment naïve or experienced, patients without cirrhosis, patients with compensated and decompensated cirrhosis, and patients co-infected with HCV and HIV. Important issues addressed in this guidance include: Drug development methods to reduce the emergence of drug resistance, types of trial designs to assess optimal dose and treatment duration, combination therapy with multiple investigational drugs, recommendations on development of drugs to meet unmet medical needs, and use of treatment INDs or other smaller safety protocols to provide early access of multiple DAAs for patients at risk of imminent progression of liver disease.

This draft guidance is being issued consistent with FDA's good guidance practices regulation (21 CFR 10.115). The draft guidance, when finalized, will represent the agency's current thinking on developing DAAs for treatment of CHC virus infection. It does not create or confer any rights for or on any person and does not operate to bind FDA or the public. An alternative approach may be used if such approach satisfies the requirements of the applicable statutes and regulations.

## II. The Paperwork Reduction Act of 1995

This guidance refers to previously approved collections of information that are subject to review by the Office of Management and Budget (OMB) under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501-3520). The collections of information in 21 CFR part 312 have been approved under OMB control number 0910-0014, the collections of information in 21 CFR part 314 have been approved under OMB control number 0910-0001, and the collections of information referred to in the guidance “Establishment and Operation of Clinical Trial Data Monitoring Committees” have been approved under OMB control number 0910-0581.

## III. Comments

                    Interested persons may submit to the Division of Dockets Management (see                     **ADDRESSES**                    ) either electronic or written comments regarding this document. It is only necessary to send one set of comments. It is no longer necessary to send two copies of mailed comments. Identify comments with the docket number found in brackets in the heading of this document. Received comments may be seen in the Division of Dockets Management between 9 a.m. and 4 p.m., Monday through Friday.                

## IV. Electronic Access

                    Persons with access to the Internet may obtain the document at either                     *http://www.fda.gov/​Drugs/​GuidanceComplianceRegulatoryInformation/​Guidances/​default.htm*                     or                     *http://www.regulations.gov*.                

Dated: September 8, 2010.

Leslie Kux,

Acting Assistant Commissioner for Policy.

[FR Doc. 2010-22806 Filed 9-13-10; 8:45 am]

BILLING CODE 4160-01-S