The purpose of this research study is to determine the effects of clinically prescribed ivacaftor treatment on 6-24 month old children with CF and gating mutations on sleeping energy expenditure, growth status and gut health and function.

NCT03783286

Conditions

1. Cystic Fibrosis

Interventions

1. Drug: Ivacaftor

MeSH:Cystic Fibrosis

Each value will be used to calculate the growth velocity percentile of the subjects over the course of 12 weeks on ivacaftor treatment compared to baseline.. Inclusion Criteria: - Cystic fibrosis with at least one CFTR gating mutation (E56K, G178R, S549R, S977F, F1074L, 2789+5G→A,P67L, E193K, G551D, F1052V, D1152H, 3272-26A→G, R74W, L206W, G551S, K1060T, G1244E, 3849+10kbC→T, D110E, R347H, D579G, A1067T, S1251N, D110H, R352Q, 711+3A→G, G1069R, S1255P, R117C, A455E, E831X, R1070Q, D1270N, R117H, S549N, S945L, R1070W, G1349D) approved for treatment - Age: 6-24 months of age - In their usual state of good health - A clinical decision has been made for subject to begin ivacaftor treatment - Family committed to the 4 to 6 month study protocol with visits to CHOP that will last 2 or 3 days for the baseline visit (Visit 1) prior to ivacaftor and the 12 week visit (Visit 3) after clinically prescribed ivacaftor treatment has begun, and will last 2 days for the 6 week visit (Visit 2) after ivacaftor treatment has begun. --- E56K --- --- G178R --- --- S549R --- --- S977F --- --- F1074L ---

Exclusion Criteria: - On parenteral nutrition - Use of any medications which are as inhibitors or inducers of cytochrome P450 (CYP) 3A - Liver function tests elevated above 3x the reference range for age and sex - Other illness affecting growth or nutritional status - Other contraindications described for ivacaftor therapy Inclusion Criteria: - Cystic fibrosis with at least one CFTR gating mutation (E56K, G178R, S549R, S977F, F1074L, 2789+5G→A,P67L, E193K, G551D, F1052V, D1152H, 3272-26A→G, R74W, L206W, G551S, K1060T, G1244E, 3849+10kbC→T, D110E, R347H, D579G, A1067T, S1251N, D110H, R352Q, 711+3A→G, G1069R, S1255P, R117C, A455E, E831X, R1070Q, D1270N, R117H, S549N, S945L, R1070W, G1349D) approved for treatment - Age: 6-24 months of age - In their usual state of good health - A clinical decision has been made for subject to begin ivacaftor treatment - Family committed to the 4 to 6 month study protocol with visits to CHOP that will last 2 or 3 days for the baseline visit (Visit 1) prior to ivacaftor and the 12 week visit (Visit 3) after clinically prescribed ivacaftor treatment has begun, and will last 2 days for the 6 week visit (Visit 2) after ivacaftor treatment has begun. --- E56K --- --- G178R --- --- S549R --- --- S977F --- --- F1074L ---

This study is a multiple within participant crossover study to evaluate the effect of ivacaftor on lung function in participants aged 12 years and older with cystic fibrosis (CF) who have phenotypic or molecular evidence of residual CF transmembrane conductance regulator (CFTR) function.

NCT01685801

Conditions

1. Cystic Fibrosis

Interventions

1. Drug: Ivacaftor
2. Drug: Placebo-matched-to-ivacaftor tablet

MeSH:Cystic Fibrosis Fibrosis

Data was to be reported by drug treatment for double-blind crossover period (Cycle 1 up to Washout Period 2) and open-label period.. Inclusion Criteria: - Male or female participants with confirmed diagnosis of CF - Clinical evidence of residual CFTR function based on any 1 of the following: 1) Clinically documented residual exocrine pancreatic function, 2) Sweat chloride value less than equal to (<=) 80 millimole per liter (mmol/L) at screening, or 3) Age of diagnosis greater than equal to (>=) 12 years and at least 1 copy of a CFTR mutation associated with residual CFTR function or defective mRNA splicing - FEV1 >= 40 percent (%) - 12 years of age or older - Willing to agree to meet the contraception requirements - Able to swallow tablets Exclusion Criteria: - A copy of any of the following CFTR mutations: G551D, G178R, S549N, S549R, G551S, G970R, G1244E, S1251N, S1255P, or G1349D - Unable to perform spirometry - An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 4 weeks before Day 1 - Ongoing participation in another therapeutic clinical study or prior participation in an investigational drug study within the 30 days prior to screening Inclusion Criteria: - Male or female participants with confirmed diagnosis of CF - Clinical evidence of residual CFTR function based on any 1 of the following: 1) Clinically documented residual exocrine pancreatic function, 2) Sweat chloride value less than equal to (<=) 80 millimole per liter (mmol/L) at screening, or 3) Age of diagnosis greater than equal to (>=) 12 years and at least 1 copy of a CFTR mutation associated with residual CFTR function or defective mRNA splicing - FEV1 >= 40 percent (%) - 12 years of age or older - Willing to agree to meet the contraception requirements - Able to swallow tablets Exclusion Criteria: - A copy of any of the following CFTR mutations: G551D, G178R, S549N, S549R, G551S, G970R, G1244E, S1251N, S1255P, or G1349D - Unable to perform spirometry - An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 4 weeks before Day 1 - Ongoing participation in another therapeutic clinical study or prior participation in an investigational drug study within the 30 days prior to screening Cystic Fibrosis Cystic Fibrosis Fibrosis CFTR Mutations associated with residual function or defective messenger ribonucleic acid (mRNA) splicing include the following: R117H, E56K, P67L, D110E, D110H, R117C, R347H, R352Q, A455E, D579G, S945L, L206W, R1070W, F1074L, D1152H, S1235R, D1270N, 2789+5G->A, 3849+10kbC->T, 3272-26A->G, 711+5G->A, 3120G->A, 1811+1.6kbA->G, --- G551D --- --- G178R --- --- S549N --- --- S549R --- --- G551S --- --- G970R --- --- G1244E --- --- S1251N --- --- S1255P --- --- G1349D --- --- G551D --- --- G178R --- --- S549N --- --- S549R --- --- G551S --- --- G970R --- --- G1244E --- --- S1251N --- --- S1255P --- --- G1349D --- --- R117H --- --- E56K --- --- P67L --- --- D110E --- --- D110H --- --- R117C --- --- R347H --- --- R352Q --- --- A455E --- --- D579G --- --- S945L --- --- L206W --- --- R1070W --- --- F1074L ---