Gefitinib

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IRESSA (gefitinib) is indicated for:  the first line treatment of patients with locally advanced (not amenable to curative therapy) or metastatic non-small cell lung cancer (NSCLC) who have activating mutations of the EGFR-TK (see 7 WARNINGS AND PRECAUTIONS – Monitoring and Laboratory Tests).

This indication was based on progression-free survival (PFS). After 78% of trial patients had died, no statistically significant difference in overall survival (OS) was demonstrated with first line IRESSA compared to the first line chemotherapy doublet in patients with EGFR mutation positive tumours in the IPASS study (see 14 CLINICAL TRIALS).

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1 INDICATIONS AND USAGE Gefitinib tablets are indicated for the first-line treatment of patients with metastatic non-small cell lung cancer (NSCLC) whose tumors have epidermal growth factor receptor (EGFR) exon 19 deletions or exon 21 (L858R) substitution mutations as detected by an FDA-approved test [ see Clinical Studies (14) ].

Limitation of Use:

Safety and efficacy of gefitinib tablets have not been established in patients with metastatic NSCLC whose tumors have EGFR mutations other than exon 19 deletions or exon 21 (L858R) substitution mutations [ see Clinical Studies (14) ].

Gefitinib tablets are a tyrosine kinase inhibitor indicated for the first-line treatment of patients with metastatic non-small cell lung cancer (NSCLC) whose tumors have epidermal growth factor receptor (EGFR) exon 19 deletions or exon 21 (L858R) substitution mutations as detected by an FDA-approved test.

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