OnCo
drugsProductNot mapped hereapproved

Gefitinib

The lung-cancer pill whose dramatic responses in a few patients led to the discovery of EGFR mutations in 2004.

Accelerated approval 2003 in unselected NSCLC; ISEL (2005) failed and US use was restricted. Lynch and Paez (2004) found EGFR mutations in responders; IPASS (2009) proved mutation-selected first-line superiority over chemotherapy. Re-approved in the US in 2015 for EGFR-mutant NSCLC.

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Gefitinib
PubChem
Modality
Small-molecule EGFR TKI (first generation, reversible)
Mechanism
Reversible EGFR kinase inhibitor selective for sensitising mutations.
Brand / code
Iressa
Medicare
Part D (self-administered)

Oral, self-administered, so it is a Part D drug: covered through a stand-alone Part D plan or Medicare Advantage drug benefit, usually on the specialty tier with 25 to 33% coinsurance until the annual cap ($2,000 in 2025, $2,100 in 2026). Generic gefitinib is available.

Commercial insurance
covered on label

Multi-source generic on low-cost tiers; usually no prior authorisation. Cash prices without insurance are modest.

Sources: Medicare.gov: Drug coverage (Part D) · Medicare.gov: Costs for Medicare drug coverage (annual out-of-pocket cap). Not medical or financial advice; verify with your plan.

NICE recommendedNICE TA192 · 2010SMC: accepted
Appraised for
Untreated EGFR mutation-positive NSCLC
NHS England
Routinely funded for the appraised indication (or via managed access)

Sources: NICE TA192 · SMC advice: gefitinib. Funding decisions are indication-specific and change monthly; verify with NICE and your treating team.

Regulatory

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Approvals

RegionYearIndication
US2003NSCLC after chemotherapy (accelerated; restricted 2005)
EU2009EGFR-mutant NSCLC
US2015First-line NSCLC with EGFR exon 19 del or L858R

Trials

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Recruiting now (live from ClinicalTrials.gov)

Recruiting trials near you · live from ClinicalTrials.gov
Gefitinib
intervention: Gefitinib
Open on ClinicalTrials.gov →

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Latest papers

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Latest papers · live from Europe PMC
Open in Europe PMC

Query for this drug: (TITLE:"Gefitinib" OR ABSTRACT:"Gefitinib" OR TITLE:"Iressa" OR ABSTRACT:"Iressa") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Gefitinib, not a curated reading list.

Connected

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