Visit our FAQ
Toll Free Phone (USA and Canada Only): (888) 526-5351
Direct Phone: (734) 975-3888
Product Categories
Application
Provide batch numbers separated by commas to download or request available product inserts, QC sheets, certificates of analysis, data packs, and GC-MS data.

Claudin 18 isoform 2 (claudin-18.2) is a member of the claudin family of tight junction proteins.1,2 CLDN18 is expressed as two isoforms, claudin-18.1 and claudin-18.2, that differ in their N-terminal domains and tissue expression.3 Both claudin-18 isoforms are composed of two cytoplasmic domains, four transmembrane domains, and two extracellular loops.1 Claudin-18.2 is predominantly expressed in gastric epithelium.3,1 It forms tight junctions between epithelial cells and prevents paracellular hydrogen ion leakage.1,2 The levels of claudin-18.2 are increased in tumor tissue from patients with gastric adenocarcinoma.4 Formulations containing monoclonal antibodies targeting claudin-18.2 have been used in the treatment of gastric or gastroesophageal junction adenocarcinoma. Cayman’s Claudin-18.2 Rabbit Monoclonal Antibody (Clone RM510) can be used for immunohistochemistry (IHC) applications.
WARNING This product is not for human or veterinary use.
1. Claudin 18.2 as a novel therapeutic target. Nat. Rev. Clin. Oncol. 21(5), 354-369 (2024).
2. The claudins: From tight junctions to biological systems. Trends Biochem. Sci. 44(2), 141-152 (2019).
3. Claudin-
4. Comparison of Claudin 18.2 expression in primary tumors and lymph node metastases in Japanese patients with gastric adenocarcinoma. Jpn. J. Clin. Oncol. 49(9), 870-876 (2019).