Rgenta Therapeutics Inc. has synthesized new 2,3-dihydropyrollopyridine carboxamide compounds acting as PMS1 protein homolog 1 splicing modulators. They are reported to be useful for the treatment of amyotrophic lateral sclerosis, Friedreich ataxia, myotonic dystrophy, fragile X syndrome, frontotemporal dementia, Fuchs dystrophy, Huntington’s disease and spinal and bulbar muscular atrophy, among others.