CARLSBAD, Calif. and BOSTON, Aug. 31, 2020 /PRNewswire/ — Ionis Pharmaceuticals, Inc. (NASDAQ: IONS) and its affiliate Akcea Therapeutics, Inc. (NASDAQ: AKCA) today announced that they have entered into a definitive agreement under which Ionis will acquire all of the outstanding shares of Akcea common stock it does not already own, […]