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Cyclophosphamide added to steroids increases mortality in acute exacerbation of IPF: Lancet
Cyclophosphamide added to glucocorticoids increases 3-month mortality in acute exacerbation of idiopathic pulmonary fibrosis (IPF), suggests a study published in The Lancet: Respiratory Medicine.
The use of cyclophosphamide in patients with acute exacerbation of idiopathic pulmonary fibrosis (IPF) is unknown.
A group of researchers from France conducted a study to evaluate the efficacy and safety of four cyclophosphamide pulses in addition to high-dose methylprednisolone in this population.
In this double-blind, placebo-controlled trial done in 35 departments across 31 hospitals in France, adult patients (≥18 years) with acute exacerbation of IPF and those with suspected acute exacerbation of IPF were randomly assigned in a 1:1 ratio using a web-based system to receive either intravenous pulses of cyclophosphamide (600 mg/m2) plus uromitexan as haemorrhagic cystitis prophylaxis (200 mg/m2) at the time of cyclophosphamide administration and then again, 4 h later, or placebo at days 0, 15, 30, and 60. Random assignment was stratified according to the severity of IPF and was block-balanced with variable block sizes of four or six patients. Patients receiving mechanical ventilation, with active infection, with active cancer, or who were registered on the lung transplant waiting list were excluded. All patients received standardised high-dose glucocorticoids. The investigators, patients, and the sponsor were masked to the treatment assignments.
The primary endpoint was 3-month all-cause mortality, analysed by a χ2 test adhering to an intention-to-treat principle.
The results of the study are as follows:
· Between Jan 22, 2016, and July 19, 2018, 183 patients were assessed for eligibility, of whom 120 patients were randomly assigned and 119 patients received at least one dose of cyclophosphamide (n=60) or placebo (n=59), all of whom were included in the intention-to-treat analysis.
· The 3-month all-cause mortality was 45% (27/60) in patients given cyclophosphamide compared with 31% (18/59) in the placebo group.
· Similar results were found after adjustment by IPF severity.
· The risk of death at 3 months, independent of the treatment received, was higher with severe than non-severe IPF and was lower with the use of antifibrotic therapy.
· Adverse events were similar between groups by 6 months and their proportion, including infections, did not differ.
· Overall infection was the main adverse event and occurred in 20 (33%) of 60 patients in the cyclophosphamide group versus 21 (36%) of 59 patients in the placebo group.
Thus, the researchers concluded that in patients with acute exacerbation of IPF, adding intravenous cyclophosphamide pulses to glucocorticoids increased 3-month mortality. These findings provide evidence against the use of intravenous cyclophosphamide in such patients.
Reference:
Cyclophosphamide added to glucocorticoids in acute exacerbation of idiopathic pulmonary fibrosis (EXAFIP): a randomised, double-blind, placebo-controlled, phase 3 trial Naccache J et. al published in The Lancet: Respiratory Medicine
DOI: https://doi.org/10.1016/S2213-2600(21)00354-4
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751