Despite conventional treatment, a proportion of interstitial lung disease (ILD) patients develop a progressive phenotype known as “fibrosing ILD with a progressive phenotype” (PF-ILD), characterized by worsening respiratory symptoms, decline in lung function, and early mortality. This review describes the epidemiology, and the humanistic and economic burden of PF-ILDs other than idiopathic pulmonary fibrosis (non-IPF PF-ILD). A structured review of the literature was conducted, using predefined search strategies in Ovid MEDLINE and EMBASE, and supplemented with gray literature searches. The search identified 3,002 unique articles and an additional 3 sources were included from the gray literature; 21 publications were included. The estimated prevalence of non-IPF PF-ILD ranges from 6.9 to 70.3/100,000 persons and the estimated incidence from 2.1 to 32.6/100,000 person-years. Limited evidence demonstrates that PF-ILD has a significant impact on patients' quality of life, affecting their daily lives, psychological well-being, careers, and relationships. PF-ILD is also associated with significant economic burden, demonstrating higher healthcare resource use and direct costs compared with the non-progressive phenotype, and indirect costs, which include job losses. This review indicates that PF-ILD places a considerable humanistic burden on both patients and caregivers, and a substantial economic burden on healthcare systems, patients, and society.

IntroductionAdvanced Therapy Medicinal Products (ATMPs) are innovative biologics (gene, cells and tissue-based products) with the potential to treat diseases with significant unmet clinical need. ATMPs pose distinct regulatory, health technology assessment (HTA) and patient access challenges, hence early identification and prioritization of ATMPs is now recognized as a key concern in England. The National Institute for Health Research Innovation Observatory (NIHRIO) uses a robust methodology to identify and monitor health technologies, including ATMPs that meet the remit of key HTA stakeholders in England. This analysis provides a global overview of the current ATMPs pipeline to administer useful insights for policymakers, funders and innovators.MethodsNIHRIO's database tracks pharmaceuticals from phase I/II onwards, but this analysis focuses on late-stage development. The database (N > 12,000 records) was filtered to identify potential ATMPs using a predefined criteria based on the European Medicine's Agency's classification. Each record is categorized by stage: ‘Active’, (with an estimated three years to European licence); ‘Monitoring’ (in development with no licence date); and ‘Finished’, (output produced/discontinued and no longer tracked). Subsequently, records in ‘Active’ and ‘Monitoring’ were examined further.ResultsAnalysis identified 636 ATMPs: five percent ‘Active’, 40 percent ‘Monitoring’ and 55 percent ‘Finished’. ATMPs in the Active/Monitoring stages included: gene therapies (52%), somatic cells (43%) and tissue-engineered products (5%). Of these, 40 percent were oncological with the majority targeting hematological cancers (lymphomas). Prevalent non-oncology areas included musculoskeletal (10%) and ophthalmology (8%). Over one-third of trials were phase IIs, with almost half of all trials were based in the US.ConclusionsThe overarching findings here indicate increasing development of the ATMP pipeline towards indications with significant unmet clinical need. In oncology, the high prevalence of hematological ATMPs is largely due to recent chimeric antigen receptor T cells (CAR-T) innovation. In non-oncology areas, ATMP development is increasing due to advances in regenerative medicine. With a significant number of ATMPs projected to be licenced within three years, and many more in active late-stage trials, HTA bodies and health systems are challenged to prepare for the entry of these innovative therapies.