In detail, within group A, all seven subjects diagnosed as CFTR-RD had an intermediate ST (i.e., between 41 and 53 mmol/L), two CFTR mutations, recurrent or chronic pancreatitis (four cases), bronchiectasis at TC scan (two cases), or congenital bilateral absence of the vas deferens (1 case). Here, CFTR is linked to bronchiectasis.