Immunocytochemical Detection of ALK and ROS1 Rearrangements in Lung Cancer Cytological Samples

Methods Mol Biol. 2021:2279:157-164. doi: 10.1007/978-1-0716-1278-1_12.

Abstract

The detection of molecular alterations such as ROS1 and ALK rearrangements is performed as part of the diagnosis of advanced-stage lung adenocarcinoma. These alterations allow the treatments with tyrosine kinase inhibitors. Cytological samples are very useful as up to 40% patients are diagnosed with this type of sample. Here we describe the immunocytochemistry technique usable to reveal the overexpression of ALK or ROS1 tyrosine kinase receptors secondary to ALK and ROS1 rearrangements, respectively.

Keywords: ALK; Adenocarcinoma; Cytology; Immunocytochemistry; Lung cancer; ROS1.

MeSH terms

  • Adenocarcinoma of Lung* / diagnosis
  • Adenocarcinoma of Lung* / enzymology
  • Adenocarcinoma of Lung* / genetics
  • Adenocarcinoma of Lung* / pathology
  • Anaplastic Lymphoma Kinase* / genetics
  • Anaplastic Lymphoma Kinase* / metabolism
  • Female
  • Gene Rearrangement*
  • Humans
  • Immunohistochemistry*
  • Lung Neoplasms* / diagnosis
  • Lung Neoplasms* / enzymology
  • Lung Neoplasms* / genetics
  • Lung Neoplasms* / pathology
  • Male
  • Protein-Tyrosine Kinases* / genetics
  • Protein-Tyrosine Kinases* / metabolism
  • Proto-Oncogene Proteins* / genetics
  • Proto-Oncogene Proteins* / metabolism

Substances

  • Proto-Oncogene Proteins
  • ALK protein, human
  • Anaplastic Lymphoma Kinase
  • Protein-Tyrosine Kinases
  • ROS1 protein, human