Treatable Traits in Interstitial Lung Disease

The goal of this clinical trial is to learn if a personalised treatment model of care "treatable traits" can improve quality of life and disease progression in patients with interstitial lung disease. The main question it aims to answer is, will providing a treatable traits model of care improve health-related quality of life (HRQoL) (primary outcome), symptoms, anxiety, physical activity, and body composition (secondary outcomes). Researchers will compare the treatable traits model to standard of care. Participants in both arms will complete surveys, a Dual-Energy X-Ray Absorptiometry (DEXA) and whole-body composition scan, lung function and blood tests. Those in the intervention (TT) arm will be seen in a multidisciplinary clinic where they are seen by an ILD doctor, physiotherapist, psychologist, and dietitian.

RCT to compare treatable traits (TT) model of care to standard practice. Primary endpoints reviewed will be health-related QOL as defined by the validated King's Brief Interstitial Lung Disease (KB-ILD) questionnaire. Secondary endpoints will include progression free survival (the time to disease progression or death from any cause), all-cause hospitalisation and mortality, and economic evaluation (comparison of per person direct and indirect costs intervention vs standard of care). Patients included will be those over 18yo with an interstitial lung disease across hospitals in Western Australia. Target study number will be 55 per arm. Participants will be randomised via an online randomisation system (REDCAP) in a 1:1 fashion to standard or care of the TT MDT clinic. Randomisation will be stratified with a 50% IPF limit and according to severity (mild, moderate and severe from FVC). Participants and clinicians will not be blinded to group allocation. Statistician will be blinded for data analysis. The embedded clinic will involve multidimensional assessment of patients. At the clinic, the patient will be assessed by a nurse, physiotherapist, psychologist, dietician, and physician. At the end of the clinic the team will meet to discuss each patient and devise a plan to optimise the management of TTs for that individual. Multidimensional assessment will include demographics, co-morbidities, medications, exposures, blood results, prior investigations, and MDT diagnosis. Questionnaires completed at time of enrolment include KB-ILD (assess QOL), SF26 QOL), Leister Cough questionnaire (Cough), Stop-bang (OSA), mMRC (SOB), fatigue severity score (Fatigue), PGSGASF (nutritional status), perceived stress score (anxiety), GAD score (anxiety), PHQ9 (depression). Other assessments include lung function, blood testing, sputum assessment, HRCT. Physiotherapy assessments will include 1 minute STS, 6MWT, DEXA scan. Nutritional assessment will be based on BMI and PG-SGA scores. Interventions provided include standard of care medications (anti-fibrotic and immunosuppressive therapies as per guidelines). Specific physiotherapy intervention will be pulmonary rehabilitation; dietician input will involve dietary counselling and consideration of oral nutritional supplements. Psychology intervention will be self-management strategies or referral to individual psychology.