Seattle Genetics Inc. (SGEN) and Takeda Pharmaceutical Co.’s drug brentuximab for Hodgkin’s lymphoma and a less common type of the disease may require more data on benefits compared with treatments already on the market, U.S. regulators said. The Food and Drug Administration is trying to determine whether the experimental treatment given the trade name Adcetris should receive accelerated approval in an agency staff report released today. An FDA panel of outside advisers on July 14 will weigh applications for the medicine to treat anaplastic large cell lymphoma and Hodgkin’s lymphoma.