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Surfactant protein A as a biomarker of outcomes of anti-fibrotic drug therapy in patients with idiopathic pulmonary fibrosis.

ABSTRACT: BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a progressive and fibrosing lung disease with poor prognosis. Pirfenidone and nintedanib are anti-fibrotic drugs used for patients with IPF. These drugs reduce the rate of decline in forced vital capacity (FVC). Serum surfactant protein (SP)-A, SP-D, and Krebs von den Lungen-6 (KL-6) are monitoring and prognostic biomarkers in patients with IPF; however, their relationship with the therapeutic outcomes of anti-fibrotic drugs has not been investigated. We aim to clarify whether serum SP-A, SP-D, and KL-6 reflect therapeutic outcomes of pirfenidone and nintedanib administration in patients with IPF. METHODS:We retrospectively investigated patients with IPF who were initiated on pirfenidone or nintedanib administration between January 2014 and June 2018 at our hospital. Changes in clinical parameters and serum SP-A, SP-D, and KL-6 levels were evaluated. Patients with ?10% decline in FVC or???15% decline in diffusing capacity of the lung for carbon monoxide (DLco) from baseline to 6?months were classified as progression group, while the other patients were classified as stable group. RESULTS:Forty-nine patients were included (pirfenidone, 23; nintedanib, 26). Stable group comprised 32 patients, while progression group comprised 17 patients. In the stable group, changes in SP-A and KL-6 from baseline to 3 and 6?months significantly decreased compared with the progression group (SP-A: 3?months -?6.0% vs 16.7%, 6?months -?10.2% vs 20.2%, KL-6: 3?months -?9.2% vs 6.7%, 6?months -?15.0% vs 12.1%, p?

SUBMITTER: Yoshikawa T

PROVIDER: S-EPMC6995128 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Surfactant protein A as a biomarker of outcomes of anti-fibrotic drug therapy in patients with idiopathic pulmonary fibrosis.

Yoshikawa Takumi T Otsuka Mitsuo M Chiba Hirofumi H Ikeda Kimiyuki K Mori Yuki Y Umeda Yasuaki Y Nishikiori Hirotaka H Kuronuma Koji K Takahashi Hiroki H

BMC pulmonary medicine 20200131 1

<h4>Background</h4>Idiopathic pulmonary fibrosis (IPF) is a progressive and fibrosing lung disease with poor prognosis. Pirfenidone and nintedanib are anti-fibrotic drugs used for patients with IPF. These drugs reduce the rate of decline in forced vital capacity (FVC). Serum surfactant protein (SP)-A, SP-D, and Krebs von den Lungen-6 (KL-6) are monitoring and prognostic biomarkers in patients with IPF; however, their relationship with the therapeutic outcomes of anti-fibrotic drugs has not been ...[more]

PMID: 32005219

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Project description:BACKGROUND:The benefits and risks of anti-acid medication in patients with idiopathic pulmonary fibrosis (IPF) remain a topic of debate. We investigated whether use of anti-acid medication at baseline was associated with differences in the natural course of disease or influenced the treatment effect of nintedanib in patients with IPF. METHODS:Post-hoc analyses of outcomes in patients receiving versus not receiving anti-acid medication (proton pump or histamine-2 receptor inhibitor) at baseline using pooled data from the two Phase III randomized placebo-controlled INPULSIS® trials of nintedanib in patients with IPF. RESULTS:At baseline, 406 patients were receiving anti-acid medication (244 nintedanib; 162 placebo) and 655 were not (394 nintedanib; 261 placebo). In an analysis of the natural course of IPF by anti-acid medication use at baseline, the adjusted annual rate of decline in FVC was -?252.9 mL/year in placebo-treated patients who were receiving anti-acid medication at baseline and?-?205.4 mL/year in placebo-treated patients who were not (difference of -?47.5 mL/year [95% CI: -105.1, 10.1]; p?=?0.1057). In an analysis of the potential influence of anti-acid medication use on the treatment effect of nintedanib, the adjusted annual rates of decline in FVC were?-?124.4 mL/year in the nintedanib group and?-?252.9 mL/year in the placebo group (difference of 128.6 mL/year [95% CI: 74.9, 182.2]) in patients who were receiving anti-acid medication at baseline and?-?107.0 mL/year in the nintedanib group and?-?205.3 mL/year in the placebo group (difference of 98.3 mL/year [95% CI: 54.1, 142.5]) in patients who were not (treatment-by-time-by-subgroup interaction p?=?0.3869). The proportions of patients who had ?1 investigator-reported acute exacerbation were 11.7% and 5.0% in placebo-treated patients, and 4.9% and 4.8% of nintedanib-treated patients, among patients who were and were not receiving anti-acid medication at baseline, respectively. CONCLUSIONS:In post-hoc analyses of data from the INPULSIS® trials, anti-acid medication use at baseline was not associated with a more favorable course of disease, and did not impact the treatment effect of nintedanib, in patients with IPF. TRIAL REGISTRATION:ClinicalTrials.gov identifiers: NCT01335464 and NCT01335477 .

Dataset Information

Surfactant protein A as a biomarker of outcomes of anti-fibrotic drug therapy in patients with idiopathic pulmonary fibrosis.

Publications

Surfactant protein A as a biomarker of outcomes of anti-fibrotic drug therapy in patients with idiopathic pulmonary fibrosis.

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