Nano-Based Therapeutics in Rare Disease Management: Current Perspectives, Challenges, and Unmet Needs.

Rare diseases, affecting approximately 8% of the global population, remain among the most underserved areas in modern medicine due to their low prevalence, complex genetic origins, and limited commercial incentives for drug development. Rare neurological disorders, in particular, pose formidable challenges owing to their progressive nature and the difficulty of delivering thera-peutics across the blood-brain barrier. This review explores the emerging role of nanomedicine in transforming rare disease management through precision-targeted drug delivery, enhanced bioavail-ability, and the ability to bypass biological barriers. Nanoparticles (NPs)-including PEGylated NPs, lipid-based NPs, polymeric NPs, and hybrid formulations-are being engineered to deliver therapeu-tic agents for gene therapy, enzyme replacement, and RNA interference. These platforms have shown promise in treating conditions such as Krabbe disease, Niemann-Pick type C1, spinocerebel-lar ataxia type 1, and prion diseases. Additionally, nanotherapeutics are being investigated for pulmonary and congenital lung disorders, including cystic fibrosis and idiopathic pulmonary fibro-sis, with improved tissue penetration and reduced systemic toxicity. The review also highlights the potential of AI-integrated diagnostics and personalized nanomedicine to address disease heterogene-ity and improve patient outcomes. Despite these advances, significant barriers remain, including regulatory complexity, high development costs, and limited clinical models. The manuscript calls for collaborative innovation across academia, industry, and regulatory bodies to accelerate clinical translation and ensure equitable access. By bridging molecular innovation with patient-centric care, nanotherapeutics offer a paradigm shift in the diagnosis and treatment of rare diseases, potentially redefining therapeutic landscapes and improving the quality of life for affected individuals.