Federal funding of embryonic stem cell research has become a major focus of the upcoming World Stem Cell Summit in Detroit, following recent decisions by federal courts that have put about $75 million of near-term funding at risk and left researchers in limbo.

The sixth annual summit will be held Oct. 4-6 at the Detroit MarriottRenaissance Center.

It is expected to draw some 1,200 scientists, government officials and representatives from life science companies from more than 30 countries.

The summit’s agenda has been revised to focus on stem cell research and related policy issues, particularly the possible shut-off of federal funding and its ramifications.