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Felty's syndrome.

Christoph Wegscheider1,2, Vera Ferincz1,2, Karin Schöls1,2

  • 1Karl Landsteiner University of Health Sciences, Krems, Austria.

Frontiers in Medicine
|November 3, 2023
PubMed
Summary
This summary is machine-generated.

Felty's syndrome, a rare triad of rheumatoid arthritis, splenomegaly, and neutropenia, presents diagnostic and therapeutic challenges. Understanding its complex pathogenesis and exploring treatment options like methotrexate are crucial for managing this condition.

Keywords:
Felty syndromeJAK inhibitorT-LGLrheumatoid arthritisrituximab

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Area of Science:

  • Rheumatology
  • Hematology
  • Immunology

Background:

  • Felty's syndrome, described in 1924, comprises rheumatoid arthritis, splenomegaly, and leukopenia.
  • Despite its long history, pathogenesis remains unclear, posing diagnostic and therapeutic hurdles.
  • Neutropenia is a primary concern, increasing infection risk.

Purpose of the Study:

  • To provide an updated review of Felty's syndrome.
  • To discuss the complex pathogenesis, including suggested mechanisms.
  • To outline current and potential treatment strategies.

Main Methods:

  • Literature review of Felty's syndrome.
  • Analysis of proposed pathomechanisms.
  • Summary of therapeutic approaches based on case reports and series.

Main Results:

  • Pathogenesis involves multiple factors: Fas-mediated apoptosis, autoantibodies, NETosis, and T-LGL suppression.
  • Differential diagnoses are extensive, including infections, malignancies, and other autoimmune disorders.
  • Benign clonal T-/NK-LGL lymphocytosis can complicate diagnosis.

Conclusions:

  • Current treatment options are limited, with methotrexate as the primary therapy, followed by rituximab.
  • Alternative treatments lack robust evidence and are considered upon adverse reactions or treatment failure.
  • Further research is needed to fully elucidate pathogenesis and improve therapeutic outcomes.