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Autoimmune neutropenia in Sheboygan County, Wisconsin.
1Sheboygan Clinic, WI.
The Journal of Laboratory and Clinical Medicine
|June 1, 1992
Summary
Autoimmune neutropenia, a rare adult disorder, was diagnosed in seven individuals over two years. Most patients exhibited other autoimmune symptoms, suggesting a higher prevalence than previously believed.
Area of Science:
- Hematology
- Immunology
- Internal Medicine
Background:
- Autoimmune neutropenia is generally considered uncommon in adult populations.
- Recent observations suggest a potentially higher incidence in adults than previously recognized.
Purpose of the Study:
- To investigate the occurrence and clinical characteristics of autoimmune neutropenia in adult patients.
- To identify associated autoimmune conditions and antibody targets in these patients.
Main Methods:
- Retrospective analysis of seven adult patients diagnosed with autoimmune neutropenia over a two-year period.
- Assessment of clinical features, co-existing autoimmune diseases, and laboratory findings, including neutrophil antibody testing (granulocyte agglutination/immunofluorescence).
Main Results:
- Seven adult cases of autoimmune neutropenia were identified in a population of 105,000 over two years.
- All patients had other autoimmune disease symptoms; common findings included splenomegaly and positive direct antiglobulin tests.
- Neutrophil antibodies were detected in five patients, targeting 80 kd and 60 kd neutrophil membrane glycoproteins.
Conclusions:
- Autoimmune neutropenia in adults may be more prevalent than commonly assumed.
- Adult autoimmune neutropenia frequently co-occurs with other autoimmune phenomena.
- Further research is warranted to understand the full scope and management of this condition.