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Paraneoplastic autoimmune multiorgan syndrome.

Dario Didona1, Giovanni DI Zenzo2, Pascal Joly3

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Paraneoplastic autoimmune multiorgan syndrome (PAMS) is a severe blistering disease with high mortality due to poor treatment response and delayed diagnosis. Autoantibodies like antiplakins and antidesmogleins are key indicators in PAMS patients.

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Area of Science:

  • Dermatology
  • Immunology
  • Oncology

Background:

  • Paraneoplastic autoimmune multiorgan syndrome (PAMS), formerly paraneoplastic pemphigus, is a rare and severe autoimmune blistering disease.
  • It presents with diverse mucocutaneous manifestations, including erosions, blisters, and lichenoid papules.
  • PAMS is associated with specific autoantibodies, such as antiplakins, anti-alpha-2-macroglobulin like 1, and antidesmogleins.

Purpose of the Study:

  • To summarize the key characteristics of paraneoplastic autoimmune multiorgan syndrome (PAMS).
  • To highlight the diagnostic challenges and prognostic factors associated with PAMS.
  • To underscore the severity and high mortality rate of PAMS.

Main Methods:

  • Literature review of paraneoplastic autoimmune multiorgan syndrome (PAMS).
  • Analysis of clinical features, autoantibody profiles, and treatment outcomes.
  • Review of mortality rates and contributing factors.

Main Results:

  • PAMS exhibits polymorphous clinical features affecting skin and mucous membranes.
  • Autoantibodies against plakins, alpha-2-macroglobulin like 1, and desmogleins are frequently detected.
  • The mortality rate for PAMS can be as high as 90%.

Conclusions:

  • PAMS is a life-threatening condition with significant morbidity and mortality.
  • Delayed diagnosis and poor response to therapies contribute to the high mortality rate.
  • The underlying neoplasia significantly impacts the prognosis of PAMS patients.