By Aaron Hegarty Click here for updates on this story OMAHA, Nebraska (KETV) — An Omaha mom says Food and Drug Administration approval of a drug intended to address her son’s rare condition can’t wait. Jordan Karle’s 1-year-old son Jaylen experienced heart failure from birth because of Barth syndrome, a deadly, rare condition estimated to affect around 150 people in the U.S. The FDA denied approval of the drug, elamipretide, last week, but g…