Aug 27 (Reuters) - Delaware's highest court said on

Tuesday it will hear an appeal by GSK and other

drugmakers seeking to end more than 70,000 lawsuits claiming

discontinued heartburn drug Zantac caused cancer.

GSK, Pfizer ( PFE ), Sanofi and Boehringer

Ingelheim are asking the court to overturn an order by a lower

court judge allowing plaintiffs in the lawsuits to offer expert

testimony on the alleged cancer link. The companies have denied

the allegations.