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Related Experiment Videos

Enteropathy associated T cell lymphoma

D H Wright1

  • 1University Department of Pathology, Southampton General Hospital.

Cancer Surveys
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

Enteropathy associated T cell lymphoma (EATCL), a severe coeliac disease complication, arises from intraepithelial lymphocytosis. Gliadin peptides may drive EATCL evolution in coeliac patients with specific HLA-DQ alleles.

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Area of Science:

  • Gastroenterology
  • Immunology
  • Oncology

Background:

  • Enteropathy associated T cell lymphoma (EATCL) is a severe complication of coeliac disease.
  • Coeliac disease is characterized by an abnormal immune response to gluten, leading to small intestinal inflammation.

Purpose of the Study:

  • To investigate the pathogenesis of EATCL in coeliac disease patients.
  • To identify genetic and cellular factors contributing to EATCL development.

Main Methods:

  • HLA genotyping to identify specific HLA-DQ alleles.
  • Analysis of T cell receptor genes and immunohistochemistry to study T cell populations.
  • Examination of small intestinal biopsies from coeliac disease and EATCL patients.

Main Results:

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  • EATCL patients share the coeliac disease-associated HLA-DQB1*0201 and DQA1*0501 alleles.
  • Increased intraepithelial cytotoxic T cells are present in coeliac disease and EATCL.
  • Clonal T cell populations, identical to lymphoma cells, are found in non-tumorous intestinal mucosa.

Conclusions:

  • EATCL likely evolves from intraepithelial lymphocytosis in coeliac disease, potentially driven by gliadin peptides.
  • Specific HLA-DQ alleles may facilitate antigen presentation leading to EATCL.
  • Chronic ulcerative enteritis may represent a related disease process.