Mortality in patients with cystic fibrosis fell by almost 2% per year in the United States between 2000 and 2010, authors of a registry-based study reported online August 18 in Annals of Internal Medicine.
Based on the analyses, patients born and diagnosed in 2010 can expect to live almost 40 years if the state of CF care remains static, and about 56 years if treatments progress at the current rate, said Todd MacKenzie, Ph.D., of Dartmouth School of Medicine in Hanover, N.H., and his associates.
The study included 110 Cystic Fibrosis Foundation–accredited care centers in the United States. Mortality fell by 1.8% per year between 2000 and 2010 (95% confidence interval, 0.5%-2.7%), and males had a 19% lower risk of death than females (95% CI, 13%-24%), the investigators found. The estimated median survival for children born and diagnosed in 2010 was 39 years overall (95% CI, 38-40 years), 37 years for females (95% CI, 35-39 years), and 40 years for males (95% CI, 39-42 years), they reported (Ann. Int. Med. 2014 Aug. 18 [doi:10.7326/M13-0636]).
The results apply only to patients diagnosed in the first year of life, as patients diagnosed later are likely pancreatic-sufficient and therefore have a better prognosis, Dr. MacKenzie and associates noted. Improved survival could partially reflect the increasing diagnosis of patients with less severe phenotypes, they said.
The Cystic Fibrosis Foundation funded the study. Dr. MacKenzie reported no conflicts of interest. Three coauthors reported grant support from the Cystic Fibrosis Foundation.