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drugsProductApproved2022🇪🇺🇬🇧🇯🇵🇦🇺

Tremelimumab

Tremelimumab is AstraZeneca's CTLA-4 antibody, given as a single priming dose with durvalumab and chemotherapy in lung and liver cancer.

POSEIDON: tremelimumab + durvalumab + chemotherapy improved OS versus chemotherapy in first-line metastatic NSCLC (HR 0.77), with the largest benefit in STK11/KEAP1/KRAS-mutant and PD-L1-negative disease. Approved November 2022 (NSCLC) and October 2022 (HCC with durvalumab, HIMALAYA).

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Tremelimumab Fab bound to CTLA-4 (PDB 5GGV), backbone trace
RCSB PDB
How it works, step by step · animated schematic, not to scale
Immune checkpoint inhibitors
Modality
Monoclonal antibody (anti-CTLA-4)
Mechanism
Human IgG2 anti-CTLA-4; limited priming doses reduce toxicity.
Brand / code
Imjudo
Medicare
Part B (clinician-administered)

Given by infusion or injection in a clinic or hospital outpatient department, so it is a Part B drug: Medicare pays 80% after the Part B deductible and the patient owes 20% coinsurance, uncapped in Original Medicare unless a Medigap policy applies. Used only in combination with durvalumab.

Commercial insurance
covered with prior authorisation

Covered under the medical benefit with prior authorisation confirming diagnosis, biomarker status and line of therapy; site-of-care policies may steer infusions away from hospital outpatient departments.

20% Part B coinsurance on a high-cost infusion adds up quickly: Medigap Plan G or N, Medicare Advantage maximum out-of-pocket, Medicaid dual eligibility, or a charity fund are the usual buffers.

Sources: Medicare.gov: Chemotherapy · Medicare.gov: Prescription drugs (outpatient, Part B). Not medical or financial advice; verify with your plan.

NICE recommendedNICE TA916 · 2023SMC: accepted
Appraised for
With durvalumab for untreated advanced or unresectable HCC (HIMALAYA)
NHS England
Routinely funded for the appraised indication (or via managed access)

Sources: NICE TA916 · SMC advice: tremelimumab. Funding decisions are indication-specific and change monthly; verify with NICE and your treating team.

Regulatory

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Approvals

RegionYearIndication
US2022Metastatic NSCLC without EGFR/ALK, with durvalumab and platinum chemotherapy; unresectable HCC with durvalumab

Trials

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ClinicalTrials.gov · phase 2/3
refreshed 2026-09-09
198 studies15 recruiting89 Phase 213 Phase 3
Search “Tremelimumab” on ClinicalTrials.gov →
Counts are from a name search and may include unrelated studies; up to 100 studies are summarised.

Recruiting now (live from ClinicalTrials.gov)

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

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Latest papers

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Literature trend151 papers in the last 12 months+3% vs prior 12How this is computed
Latest papers · live from Europe PMC
Open in Europe PMC

Query for this drug: (TITLE:"Tremelimumab" OR ABSTRACT:"Tremelimumab" OR TITLE:"Imjudo" OR ABSTRACT:"Imjudo") 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 Tremelimumab, not a curated reading list.

Connected

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