Serostim is Serono's bran name prescription drug form of synthetic growth hormone, marketed for AIDS wasting. In December of 2007, the U.S. District Court of Massachusetts settled a class-action lawsuit that involved Merck Serono and the drug Serostim. The lawsuit claims that Merck Serono encouraged doctors to prescribe Serostim off-label for criteria that were not approved by the FDA. Merck Serono denies these claims and any liability. However, Merck Serono has entered into a settlement "solely to avoid the further expense, inconvenience, burden, and uncertainty of these lawsuits."