RecruitingPhase 1Drug trialAnti-GD2 ADC M3554 in Advanced Solid TumorsThe purpose of this study is to establish the recommended doses and further evaluate the safety and preliminary antitumor activity of M3554 in participants with soft tissue sarcoma (STS) and glioblastoma, IDH-wildtype. Study details include: Study Duration per participant: Approximately 4 months