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Rare diseases: What rheumatologists need to know?
Renan Rodrigues Neves Ribeiro do Nascimento1, Daniela Gerent Petry Piotto1, Eutilia Andrade Medeiros Freire2
1Universidade Federal de Sao Paulo - Escola Paulista de Medicina, Rua Botucatu, 740, 3º andar, São Paulo, SP, 04023-062, Brazil.
Abstract:
Although the terms "rare diseases" (RD) and "orphan diseases" (OD) are often used interchangeably, specific nuances in definitions should be noted to avoid misconception. RD are characterized by a low prevalence within the population, whereas OD are those inadequately recognized or even neglected by the medical community and drug companies. Despite their rarity, as our ability on discovering novel clinical phenotypes and improving diagnostic tools expand, RD will continue posing a real challenge for rheumatologists. Over the last decade, there has been a growing interest on elucidating mechanisms of rare autoimmune and autoinflammatory rheumatic diseases, allowing a better understanding of the role played by immune dysregulation on granulomatous, histiocytic, and hypereosinophilic disorders, just to name a few. This initiative enabled the rise of innovative targeted therapies for rheumatic RD. In this review, we explore the state-of-the art of rare RD and the critical role played by rheumatologists in healthcare. We also describe the challenges rheumatologists may face in the coming decades.
Insights
Rare diseases (RD) affect few people, while orphan diseases (OD) are neglected. Understanding these distinctions is crucial for rheumatologists managing complex autoimmune and autoinflammatory conditions with new targeted therapies.
Area of Science:
- Rheumatology
- Immunology
- Rare Diseases
Background:
- Distinguishing between rare diseases (low prevalence) and orphan diseases (neglected) is essential.
- Rare rheumatic diseases present significant challenges for rheumatologists due to increasing diagnostic capabilities.
- Growing interest in rare autoimmune and autoinflammatory rheumatic diseases is advancing understanding of immune dysregulation.
Purpose of the Study:
- To review the current understanding of rare rheumatic diseases.
- To highlight the pivotal role of rheumatologists in managing these conditions.
- To discuss future challenges for rheumatologists in the field of rare rheumatic diseases.
Main Methods:
- Literature review of rare rheumatic diseases.
- Analysis of recent advancements in understanding autoimmune and autoinflammatory mechanisms.
- Exploration of emerging targeted therapies for rare rheumatic conditions.
Main Results:
- Elucidation of immune dysregulation in granulomatous, histiocytic, and hypereosinophilic disorders.
- Development of innovative targeted therapies for rare rheumatic diseases.
- Recognition of the expanding diagnostic capabilities for rare diseases.
Conclusions:
- Rheumatologists play a critical role in the healthcare of patients with rare rheumatic diseases.
- Advances in understanding disease mechanisms are leading to novel therapeutic strategies.
- Future challenges include adapting to new diagnostic tools and managing an increasing number of rare conditions.
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