<div class="FTQUOTE"><begin quote><i>Originally posted by: <b>pencf</b></i> Suziesmom: At our CF ED day, our doctors said that at the conference there was discussion about prescribing Kalydeco to any patient with at least one copy of a class 4 mutation (G551D is a class 4). </end quote>
G551D is a class III
G551D is a class III