JoVE - Journal of Visualized Experiments
JoVE Visualize
Contact Us

Integrative genomic and transcriptomic profiling of pulmonary sarcomatoid carcinoma identifies molecular subtypes associated with distinct immune features and clinical outcomes

  • 0Department of Genomic Medicine The University of Texas MD Anderson Cancer Center Houston Texas USA.
Cancer Innovation +

|

July 1, 2024

|

July 1, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Pulmonary sarcomatoid carcinoma (PSC) is a rare lung cancer. This study identified two molecular subtypes, with the Immune High subtype showing better survival, emphasizing the role of immune infiltration.

Area Of Science

  • Oncology
  • Genomics
  • Immunology

Background

  • Pulmonary sarcomatoid carcinoma (PSC) is a rare, aggressive non-small cell lung cancer (NSCLC) subtype.
  • PSC is characterized by both epithelial and sarcoma-like components.
  • The molecular and immune landscape of PSC remains poorly understood.

Purpose Of The Study

  • To define the molecular and immune landscape of pulmonary sarcomatoid carcinoma.
  • To identify subgroups within PSC based on genomic and immunogenic features.
  • To correlate these features with clinical outcomes.

Main Methods

  • Multiomics profiling including DNA sequencing (panel and whole-exome) and RNA sequencing.
  • Analysis of 21 pairs of PSCs and matched normal lung tissues.
  • Identification of canonical cancer gene mutations and assessment of immune infiltration.

Main Results

  • Identified 27 canonical cancer gene mutations, with TP53 and KRAS being the most frequent.
  • Discovered two distinct molecular subtypes of PSC, primarily driven by immune infiltration and signaling.
  • The Immune High (IM-H) subtype demonstrated superior survival outcomes.

Conclusions

  • Detailed insights into the mutational landscape of PSC were provided.
  • Two molecular subtypes of PSC associated with prognosis were identified.
  • Tumor immune infiltration significantly impacts the biological and clinical features of PSC, particularly in the IM-H subtype with favorable recurrence-free and overall survival.

Keywords: