Tm Bioscience Corporation Notice Of Conference Call

TORONTO, March 23 /PRNewswire-FirstCall/ - Tm Bioscience Corporation will be holding a conference call to discuss its fourth quarter and year end financial results. Mr. Greg Hines, President and Chief Executive Officer and Mr. Jim Pelot, Chief Financial Officer, will be hosting the call.

DATE: March 29th, 2005 TIME: 8:00 am, Eastern Standard Time WEBCAST: A live audio webcast of the call will be available at www.tmbioscience.com. Webcast attendees are welcome to listen to the conference in real-time or on-demand at your convenience. The webcast will be archived for 90 days. Please connect to this website at least 15 minutes prior to the conference call to ensure adequate time for any software download that may be needed to hear the webcast. About Tm Bioscience - Putting the Human Genome to Work(TM)

Tm Bioscience is a DNA-based diagnostics company developing a suite of genetic tests. Tm Bioscience's product pipeline includes tests for genetic disorders, drug metabolism, and infectious diseases. Tm Bioscience is located in Toronto, Ontario. Additional information about Tm Bioscience can be found at www.tmbioscience.com.

Forward-Looking Statements

This press release contains forward-looking statements, which by their nature necessarily involve risk and uncertainties that could cause the actual results to differ materially from those contemplated by such statements. Tm Bioscience considers the assumptions on which these forward-looking statements are based to be reasonable at the time they were prepared, but cautions readers that these assumptions may ultimately prove to be incorrect due to certain risks and uncertainties including, without limitation, the difficulty of predicting regulatory approvals, market acceptance and demand for new products, the availability of appropriate genetic content and other materials required for Tm Bioscience's products, Tm Bioscience's ability to manufacture its products on a large scale, the protection of intellectual property connected with genetic content, the impact of competitive products, currency fluctuations, risks associated with Tm Bioscience's manufacturing facility and any other similar or related risks and uncertainties. If any of these risks or uncertainties were to materialize, or if assumptions underlying the forward- looking statements of management were to prove incorrect, actual results of Tm Bioscience could vary materially from those that are expressed or implied by these forward-looking statements. Tm Bioscience disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACT: Tm Bioscience Corporation: James Smith, The Equicom Group, Tel.:(416) 815-0700, Email: jsmith@equicomgroup.com; To request a free copy ofthis organization's annual report, please go to http://www.newswire.ca andclick on Tools for Investors.