%0 Journal Article
%T Clinical outcomes of a large cohort of individuals with the F508del/5T;TG12 CFTR genotype.
%A Tosco A
%A Castaldo A
%A Colombo C
%A Claut L
%A Carnovale V
%A Iacotucci P
%A Lucarelli M
%A Cimino G
%A Fabrizzi B
%A Caporelli N
%A Majo F
%A Ciciriello F
%A Padoan R
%A Poli P
%A Taccetti G
%A Centrone C
%A Casciaro R
%A Castellani C
%A Salvatore D
%A Colangelo C
%A Bonomi P
%A Castaldo G
%A Terlizzi V
%J J Cyst Fibros
%V 21
%N 5
%D Sep 2022
%M 35523714
%F 5.527
%R 10.1016/j.jcf.2022.04.020
%X BACKGROUND: In recent years, patients with cystic fibrosis (CF) conductance regulator (CFTR) variant poly(T) sequences have been increasingly reported with a wide spectrum of clinical severity. We describe the long-term clinical outcomes and progression to a CF diagnosis over time in a large Italian cohort of patients carrying the CFTR F508del/5T;TG12 genotype.
METHODS: A retrospective analysis of subjects from 10 CF centres in Italy with the F508del/5T;TG12 genotype was performed. Demographic, clinical, microbiological, and biochemical data, as well as information about the follow-ups and complications of the enroled patients, were collected.
RESULTS: A total of 129 subjects (54 females; median age: 15.0 years, range: 0-58 years; 59 older than 18 years) were included. In terms of initial diagnoses, 30 were CF (23.3%), 41 were CFTR-related disorder (CFTR-RD) (31.7%), and 58 were CF transmembrane conductance regulator-related metabolic syndrome/cystic fibrosis screen positive, inconclusive diagnosis (CRMS/CFSPID) (45.0%). After a median follow-up of 6.7 years (range 0.2-25 years), 15 patients progressed to CF, bringing the total number of CF diagnoses to 45/129 (34.9%). Most of these patients had mild lung diseases with pancreatic sufficiency and a low prevalence of CF-related complications.
CONCLUSIONS: At the end of the study, 34.9% of subjects with the CFTR F508del/5T;TG12 genotype were diagnosed with CF. We suggest including patients with the F508del/5T;TG12 genotype in long-term follow-ups.