SEQUENOM Inc announced today that the expected launch of its SEQureDx™ Down syndrome test is delayed, due to the discovery by company officials of employee mishandling of R&D test data and results.

Accordingly the company is no longer relying on the previously announced R&D test data and results. SEQUENOM has not changed its plans to develop in parallel its RNA- and DNA-based methods for the Down syndrome test and will endeavor to have a validated test in the fourth quarter of 2009. Under the circumstances, and as supported by key clinical opinion leaders, the company now intends to launch the Down syndrome test upon publication in a peer-reviewed journal of the results from the on-going large, independent clinical studies, which are designed to be practice-changing for Down syndrome testing.

The company’s board of directors has formed a special committee of independent directors to oversee an independent investigation of the employees’ activity related to the test data and results. The committee has engaged independent counsel to assist the committee in the conduct of the investigation.

Although the company is not aware of any potentially inappropriate activity related to the reported results of its other tests under development, the company is currently reviewing the data for all tests. As a result of this ongoing review the Rhesus D, Cystic Fibrosis and Fetalxy tests are now anticipated to begin launching in the third quarter of this year.

The company believes that its Down syndrome program has suffered a temporary setback but that the SEQureDx technology is scientifically and technically sound. The company intends to take every possible action to make up lost ground. SEQUENOM believes that it has the financial resources to commercialize its test for Down syndrome and other prenatal disorders.

Today’s announcement regarding the company’s SEQureDx Down syndrome R&D test data and results supersedes all previous announcements about such data and test, including its press releases dated June 4, 2008, September 23, 2008, December 1, 2008, January 28, 2009 and February 3, 2009.

SEQUENOM has scheduled a conference call for 2:00 p.m. Pacific time today at which Harry Stylli, PhD, SEQUENOM President and Chief Executive Officer, will discuss this announcement and along with other company officials will present information on the company’s operating results for the first quarter of fiscal 2009.

A separate press release setting forth information on the company’s first quarter operating results will be issued prior to the call. Individuals interested in participating in the conference call may do so by dialing (866) 844-2998 for domestic callers or (706) 679-9912 for international callers. Those interested in listening to the conference call live via the Internet may do so by visiting the investor relations section of the company’s Web site.

A webcast replay will be available on the SEQUENOM Web site for 14 days. A telephone replay will be available for 48 hours following the conclusion of the call by dialing (800) 642-1687 for domestic callers, or (706) 645-9291 for international callers, and entering reservation code 93862699.

Source: SEQUENOM, Inc.