Grünenthal receives FDA Orphan Drug and Rare Pediatric Disease Designations for Tegacorat for the Treatment of Duchenne Muscular Dystrophy8.7.2026 11:37:00 EEST | Grünenthal Group | Press release
Aachen, 08 July 2026 – Grünenthal announced today that its investigational compound tegacorat (GRM-01) received Orphan Drug and Rare Pediatric Disease Designations from the US Food and Drug Administration (FDA) for the treatment of Duchenne muscular dystrophy (DMD). Tegacorat, a non-steroidal Selective Glucocorticoid Receptor Agonist and Modulator (SEGRAM), is an orally available investigational compound being developed to provide an alternative to glucocorticoid-based treatments such as prednisone, the current standard of care in DMD. Conventional glucocorticoids bind to the glucocorticoid receptor and influence gene expression. Among other mechanisms, this triggers two patterns of activity: transrepression, mainly linked to anti-inflammatory effects, and transactivation, predominantly associated with metabolic and growth-related side effects. In contrast, SEGRAMs are designed to influence receptor activity in a way that emphasises anti-inflammatory pathways. While this has not yet be