Used in targeted cancer therapy, particularly for tumors overexpressing EGFR, such as non-small cell lung cancer, colorectal cancer, and head and neck cancers. It blocks EGFR signaling pathways, inhibiting tumor cell proliferation, survival, and metastasis. Employed as a reference in preclinical studies to evaluate new anti-EGFR agents and biosimilars. Also utilized in diagnostic assays to standardize EGFR detection methods in tissue samples. Its high specificity makes it valuable in research settings for studying EGFR biology and therapeutic resistance mechanisms.