News and Press Releases Search About the CF Foundation Cystic Fibrosis Foundation Therapeutics (CFFT) Drug Pipeline (-) Research 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 (-) 2005 Press Releases About the CF Foundation | Research Study proves genetic variations influence cystic fibrosis’ severity Oct. 3, 2005 | 5 min read