In our latest episode of the Get Science Podcast, Seng Cheng, Chief Scientific Officer of the Rare Disease Research Unit at Pfizer, discusses his urgent mission to help find breakthrough treatments for rare genetic conditions, such a hemophilia, sickle cell anemia and Duchenne muscular dystrophy. “There are many thousands of rare diseases,” says Cheng, who is based at Pfizer’s Kendall Square, Cambridge, Mass. research site. “For me, the challenge is to make sure we can develop medicines for as many different conditions as we can bring to bear, so we can provide not just hope, but true relief for these individuals.”