SYNE1 Mutation Is Associated with Increased Tumor Mutation Burden and Immune Cell Infiltration in Ovarian Cancer

Laura M Harbin1, Nan Lin2, Frederick R Ueland1

  • 1Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Kentucky Markey Cancer Center, 800 Rose Street, Lexington, KY 20536-0596, USA.

Insights

SYNE1 mutations are more common in ovarian cancer patients with recurrent disease. These mutations correlate with higher tumor mutation burden and increased immune cell infiltration, suggesting SYNE1 as a potential biomarker for immunotherapy response.

Area of Science:

  • Oncology
  • Genetics
  • Immunology

Background:

  • The nuclear envelope protein SYNE1 is downregulated in many cancers, including gynecologic and ovarian cancers.
  • Previous research links SYNE1 mutations to increased tumor mutation burden (TMB) and improved immunotherapy outcomes.

Purpose of the Study:

  • To investigate SYNE1 mutation frequency in ovarian cancer.
  • To assess the association between SYNE1 mutations, TMB, and immune responses.
  • To evaluate SYNE1 as a potential biomarker for immunotherapy in ovarian cancer.

Main Methods:

  • Genetic analysis including whole-exome sequencing and RNA analysis of ovarian cancer patients.
  • Comparison of mutation frequencies between an institutional cohort and The Cancer Genome Atlas (TCGA).
  • Bioinformatics analysis to assess TMB and gene expression related to immune response.

Main Results:

  • SYNE1 mutations were identified in 32% of the institutional cohort, significantly higher than TCGA (6%).
  • SYNE1-mutated patients exhibited a median TMB of 25, compared to 7 in wild-type patients (p < 0.0001).
  • Increased gene expression related to immune cell trafficking and inflammatory response was observed in SYNE1-mutated tumors.

Conclusions:

  • SYNE1 mutation is significantly associated with increased TMB and immune cell infiltration in ovarian cancer.
  • SYNE1 alterations may represent a valuable biomarker for predicting immunotherapy response in ovarian cancer patients.

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