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REACT-PXE: a consensus on diagnosis and future research concerning pseudoxanthoma elasticum (PXE).
L Martin1, W Spiering2, K Aelbrecht3
1French National Reference Center for PXE (MAGEC-Nord), Department of Dermatology, Angers University Hospital, Angers, France.
Annales De Dermatologie Et De Venereologie
|January 10, 2026
Summary
Pseudoxanthoma elasticum (PXE) is a rare genetic disorder affecting elastic fibers. Updated diagnostic criteria and management strategies are crucial for accurate diagnosis and improved patient care.
Area of Science:
- Genetics and rare diseases
- Dermatology and ophthalmology
- Vascular medicine
Background:
- Pseudoxanthoma elasticum (PXE) is an inherited disorder characterized by calcification and fragmentation of elastic fibers, leading to diverse clinical manifestations.
- Advances in genetic screening have identified new cases and allelic disorders like generalized arterial calcification of infancy (GACI), complicating diagnosis.
- Emerging therapeutic options necessitate precise diagnostic criteria for effective Pseudoxanthoma elasticum management.
Purpose of the Study:
- To present an updated, evidence-based definition and revised diagnostic criteria for Pseudoxanthoma elasticum (PXE).
- To establish "red flags" for suspecting PXE and outline a patient-centered approach to outcome identification.
- To consolidate current knowledge on PXE manifestations, genetics, and biological alterations for improved care.
Main Methods:
- A critical re-appraisal of diagnostic criteria for Pseudoxanthoma elasticum (PXE) was undertaken by the REACT-PXE Consortium.
- Review and synthesis of clinical, biochemical, and molecular data related to PXE.
- Inclusion of comprehensive data on skin, ocular, vascular, and other manifestations, alongside genetic and biological findings.
Main Results:
- An updated definition and revised, evidence-based diagnostic criteria for Pseudoxanthoma elasticum (PXE) are presented.
- Specific "red flags" for considering PXE diagnosis are identified.
- A patient-centered approach to meaningful outcome identification is proposed, addressing all disease aspects.
Conclusions:
- The revised criteria aim to improve the accuracy of Pseudoxanthoma elasticum (PXE) diagnosis, especially in complex or milder cases.
- Enhanced understanding of PXE manifestations and genetics supports better disease management and patient care.
- These efforts will guide future research and treatment strategies for Pseudoxanthoma elasticum (PXE) patients.

