A Kansas doctor and a researcher accused of falsifying data in a clinical drug trial are expected to appear in federal court this week after reaching an apparent plea agreement.

Court records show Wayne Spencer, a Topeka physician, and Lisa Sharp, a clinical research coordinator from Olathe, are scheduled Wednesday for change-of-plea hearings.

Sharp and Spencer were indicted in June on charges of conspiracy, mail fraud and falsifying information required by the U.S. Food and Drug Administration. Both initially pleaded not guilty.

Spencer and Sharp worked for Lee Research Institute, which was paid $30,000 by pharmaceutical company Schering-Plough to conduct clinical trials of an allergy pill on human subjects.

The indictment alleges the defendants concealed the fact that two test subjects were unqualified to participate in the trial.