Human epididymis protein 4 (HE4) levels inversely correlate with lung function improvement (delta FEV1) in cystic fibrosis patients receiving ivacaftor treatment.
The relationship between sweat chloride levels and mortality in cystic fibrosis varies by individual genotype.
Analytical and Biological Variation in Repeated Sweat Chloride Concentrations in Clinical Trials for CFTR Modulator Therapy
Correlation of sweat chloride and percent predicted FEV1 in cystic fibrosis patients treated with ivacaftor