The U.S. FDA has given Sonalasense Inc. a green light to conduct two clinical trials in life-threatening brain tumors using sonodynamic therapy (SDT) and SONALA-001, an intravenous proprietary formulation of 5-aminolevulinic acid, or ALA. The studies – in diffuse intrinsic pontine glioma (DIPG) and recurrent glioblastoma (rGBM) – mark the first time SDT will have been used in clinical trials.