Endocrine oncology

CD8+ T cells in Hashimoto’s thyroiditis-associated papillary thyroid carcinoma

Eur Thyroid JPublished Mechanistic study

Authors' conclusion

Overall, CD8+ T cells in HT-PTC exhibited no pronounced exhaustion-associated feature pattern and retained functional activity.

Study context

Population
Papillary thyroid carcinoma (PTC) with or without Hashimoto's thyroiditis (HT); TCGA data and surgically resected specimens from a single centre
Comparison
HT-PTC vs non-HT-PTC
Outcome
CD8+ T cell features in HT-PTC
Methodological detailstranscriptomic analysis with experimental validation, TCGA data, surgically resected specimens
  • Transcriptomic analysis with experimental validation
  • TCGA data
  • Surgically resected specimens

Main finding

As reported in the abstract

  • Increased CD8+ T cell infiltration in HT-PTC vs non-HT-PTC (TCGA data)
  • Tumor-derived CD8+ T cells maintained cytokine secretion capacity
  • Lower expression of TIM-3 and LAG-3, with higher Granzyme B levels
  • In coculture, associated with reduced proliferation and migration of thyroid cancer cells
  • No pronounced exhaustion-associated feature pattern; retained functional activity

Original publication

CD8+ T cells in Hashimoto’s thyroiditis-associated papillary thyroid carcinoma. Eur Thyroid J. Published 6 May 2026. doi:10.1530/etj-25-0365

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