Tarekegn Hiwot, Forbes D. Porter, Tatiana Brémovà-Ertl, U Ramaswami, Caroline Hastings, Bénédicte Héron, Justin Hopkin, Joella Melville, Hernán Amartino, Mireia del Toro, Federica Deodato, Fatih Ezgü, Paul Gissen, James B. Gibson, Can Fıçıcıoğlu, Roberto Giugliani, Orna Staretz‐Chacham, Frances Platt, Nathalie Guffon, Kristina Julich, Nikola Kresojević, Anna Lehman, Yann Nadjar, Susanne A. Schneider, Simon Jones, Eugen Mengel, Michel Tchan, Mark Walterfang, Özlem Göker-Alpan, Charlotte Dawson, Sandra Cowie, Toni Mathieson, Elizabeth Berry‐Kravis, Marc C. Patterson
In 2018, the International Niemann-Pick Disease Alliance (INPDA) and the International Niemann-Pick Disease Registry (INPDR) developed and published comprehensive clinical management guidelines to support inclusive and standardized care pathways in Niemann-Pick disease type C (NPC)-an ultra-rare, autosomal recessive, neurovisceral lysosomal disorder. Since then, advances in diagnostics, care, and the approval of two novel disease-modifying agents have underscored the need to revise these guidelines to ensure safe, consistent, and high-quality care for those affected by NPC. In response, the INPDA and INPDR convened a multidisciplinary Guidelines Development Group (GDG) comprising individuals with NPC expertise from 14 countries across five continents, representing a broad range of specialties, as well as patients and families involved in NPC care. Informed by a comprehensive literature review and two meetings, the GDG systematically reviewed, revised, and updated the 2018 guideline statements, re-evaluating the level of evidence, strength of recommendations, and expert agreement for each. The resulting 2025 consensus clinical management guidelines constitute a timely, up-to-date, and internationally applicable resource for the diagnosis, treatment, and holistic management of individuals with NPC. These guidelines serve as a critical resource for specialist centers, hospital-based medical teams, staff involved in NPC patient care, family physicians and other primary caregivers, and, importantly, patients and their families.