(a) A sponsor may request FDA to waive applicable requirement under this part. A waiver request may be submitted either in an IND or in an information amendment to an IND. In an emergency, a request may be made by telephone or other rapid communication means. A waiver request is required to contain at least one of the following:(1) An explanation why the sponsor's compliance with the requirement is unnecessary or cannot be achieved;(2) A description of an alternative submission or course of action that satisfies the purpose of the requirement; or(3) Other information justifying a waiver.(b) FDA may grant a waiver if it finds that the sponsor's noncompliance would not pose a significant and unreasonable risk to human subjects of the investigation and that one of the following is met:(1) The sponsor's compliance with the requirement is unnecessary for the agency to evaluate the application, or compliance cannot be achieved;(2) The sponsor's proposed alternative satisfies the requirement; or(3) The applicant's submission otherwise justifies a waiver.52 FR 8831, Mar. 19, 1987, as amended at 52 FR 23031, June 17, 1987; 67 FR 9585, Mar. 4, 2002