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

###### Food and Drug Administration 

          - [Docket No. 00D-0218] 

# AGENCY:

Food and Drug Administration, HHS. 

# ACTION:

Notice. 

# SUMMARY:

                        The Food and Drug Administration (FDA) is announcing the availability of a guidance document entitled “Guidance for Reviewers: Potency Limits for Standardized Dust Mite and Grass Allergen Vaccines: A Revised Protocol” dated October 2000. The guidance document provides information on the revised release limits to be used by the Center for Biologics Evaluation and Research (CBER) for its evaluation of standardized dust mite and grass allergen vaccines submitted to CBER for lot release. The establishment of suitable potency limits for standardized allergen vaccines submitted to CBER for lot release is necessary to help ensure the safety, purity, and potency of these products. The guidance document announced in this notice finalizes the draft guidance entitled “Guidance for Reviewers: Potency Limits for Standardized Dust Mite and Grass Allergen Vaccines: A Revised Protocol” that was announced in the                         **Federal Register**                         on February 15, 2000.                     

# DATES:

Submit written comments at any time. 

# ADDRESSES:

                        Submit written requests for single copies of “Guidance for Reviewers: Potency Limits for Standardized Dust Mite and Grass Allergen Vaccines: A Revised Protocol” dated November 2000 to the Office of Communication, Training, and Manufacturers Assistance (HFM-40), Center for Biologics Evaluation and Research (CBER), Food and Drug Administration, 1401 Rockville Pike, Rockville, MD 20852-1448. Send one self-addressed adhesive label to assist the office in processing your requests. The document may also be obtained by mail by calling the CBER Voice Information System at 1-800-835-4709 or 301-827-1800, or by fax by calling the FAX Information System at 1-888-CBER-FAX or 301-827-3844. See the                         **SUPPLEMENTARY INFORMATION**                         section for electronic access to the guidance document.                     

Submit written comments on the document to the Dockets Management Branch (HFA-305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, Rockville, MD 20852. 

# FOR FURTHER INFORMATION CONTACT:

Joseph L. Okrasinski, Center for Biologics Evaluation and Research (HFM-17), Food and Drug Administration, 1401 Rockville Pike, Rockville, MD 20852-1448, 301-827-6210. 

#                     SUPPLEMENTARY INFORMATION:                           ( print page 69778)    

## I. Background 

                    FDA is announcing the availability of a guidance document entitled “Guidance for Reviewers: Potency Limits for Standardized Dust Mite and Grass Allergen Vaccines: A Revised Protocol” November July 2000. The guidance document provides information to FDA reviewers regarding broader relative potency limits for CBER evaluation of standardized dust mite and grass allergen vaccines submitted to CBER for lot release. Issues addressed in the guidance document include, but are not limited to, the following: (1) Diagnostic equivalence, (2) theraputic equivalence, (3) safety equivalence, (4) lot-to-lot variation in allergen vaccine potency, and (5) current and broadened CBER release limits for standardized dust mite and grass allergen vaccines submitted to CBER for lot release. The guidance document announced in this notice finalizes the draft guidance entitled, “Guidance for Reviewers: Potency Limits for Standardized Dust Mite and Grass Allergen Vaccines: A Revised Protocol” that was announced in the                     **Federal Register**                     on February 15, 2000 (65 FR 7557).                 

This guidance document represents the agency's current thinking with regard to the potency limits for standardized dust mite and grass allergen vaccines. 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. As with other guidance documents, FDA does not intend this document to be all-inclusive and cautions that not all information may be applicable to all situations. The document is intended to provide information and does not set forth requirements. 

## II. Comments 

Interested persons may submit to the Dockets Management Branch (address above) written comments regarding this guidance document. Two copies of any comments are to be submitted, except individuals may submit one copy. Comments should be identified with the docket number found in the brackets in the heading of this document. A copy of the document and received comments are available for public examination in the Dockets Management Branch between 9 a.m. and 4 p.m., Monday through Friday. 

## III. Electronic Access 

Persons with access to the Internet may obtain the document at http://www.fda.gov/​cber/​guidelines.htm. 

Dated: October 13, 2000. 

Margaret M. Dotzel, 

Associate Commissioner for Policy. 

[FR Doc. 00-29537 Filed 11-17-00; 8:45 am] 

BILLING CODE 4160-01-F