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Why monkey studies may mislead research on cancer immunotherapy drugs targeting TIGIT

Researchers have discovered that rhesus macaques shed TIGIT from immune cell surfaces when exposed to plasmin, a natural enzyme involved in blood clot breakdown. This creates a soluble form of TIGIT that can still bind anti-TIGIT monoclonal antibodies, potentially leading to misleading safety and efficacy data for human trials.

SourceUniversity of California - Davis Health·JournalJournal of Biological Chemistry·TypeExperimental study·DateNov 24, 2025

Study identifies candidates for therapeutic targets in pediatric germ cell tumors

Researchers have identified distinct immune profiles for different subtypes of pediatric germ cell tumors, which could lead to more targeted therapies. The study found that certain tumor subtypes respond well to immunotherapy and others exhibit an immunosuppressive environment, making them more aggressive.