Subject: File No. 4-627
From: Bruce Ballaban

May 20, 2011

To Whom It May Concern,

The recent trading activity in the common stock of Radient Pharmaceuticals (RPC) is clearly an example of the reason for the implementation of Rule 4-627. The stock is evidently being manipulated by short sellers. I strongly recommend someone investigate the trading activity of this stock over the past six months. I strongly support this rule.