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Durvalumab / imfinzi for maintenance treatment of unresectable non-small-cell lung cancer after platinum-based chemoradiation

As of June 2022, MARA’s assessment finds Durvalumab / Imfinzi’s reimbursement risk concentrated in uncertainty, sensitivity, and broader impacts, with comparator selection a strength; the current MARA Rating and full rationale are available in the report.

The assessment also weighs patient population and subgroups: how closely the trial population matches the patients who would receive the drug in practice; payers often restrict funding to the groups where the evidence is strongest. The strength recorded in comparator selection carries weight because that domain asks whether the drug was tested against the treatment payers actually fund today; a benefit shown against the wrong comparator carries little weight in a reimbursement decision.

Oncology

This rating sits within MARA’s Oncology coverage, alongside 153 other independently assessed treatments in the same area.

What payers will ask

Is the clinical benefit the kind payers reward? — Clinical effectiveness

The evidence from the PACIFIC trial demonstrates a clear clinical advantage for durvalumab, showing significant improvements in both progression-free survival (24.9 months vs. 5.5 months) and overall survival (63.1 months vs. 29.6 months) compared to standard care. The hazard ratios of 0.47 for progression-free survival and 0.61 for overall survival indicate substantial benefits, supporting the rating of A+.

Does the economic case hold at the expected price? — Cost effectiveness

The cost-effectiveness estimates for durvalumab are reported to be between £20,000 and £30,000 per QALY gained, which is within the acceptable range for Healthcare resources. This indicates that durvalumab is marginally cost-effective, supporting an A rating.

Is there quality-of-life evidence payers weigh? — Quality of life

While the document does not provide extensive HRQoL data, it mentions that durvalumab has improved quality of life for patients, particularly in terms of survival benefits and symptom management. This suggests moderate improvements in HRQoL, justifying an A rating.

Does the safety profile hold up for payers? — Safety and Adverse Effects

The safety profile of durvalumab is described as very good, with mostly mild or moderate adverse events. The document indicates that serious adverse events are rare, which supports a rating of A+ for safety.

Was the drug compared against what payers expect? — Comparator Selection

Durvalumab was compared against standard care, which is appropriate for the patient population. The committee recognized standard care as routine surveillance and annual CT scans, making the comparator selection strong and justifying an A+ rating.

Is the population defined the way payers need it? — Patient Population and Subgroups

The trial population is largely representative of the intended patient population, particularly those with PD-L1 expression of 1% or more. However, there are some limitations regarding the generalizability to patients with unknown PD-L1 status, justifying an A rating.

Does the drug fit how care is delivered and paid for? — Care Pathway Integration

Durvalumab can be integrated into existing care pathways with minor adjustments, as it has become standard care in the Healthcare for this indication. This ease of integration supports an A+ rating.

Are the wider system costs understood? — Resource Use and Cost Implications

The budget impact is manageable, and the economic model suggests that durvalumab is a cost-effective option. The committee’s conclusion that the ICERs are within acceptable limits supports an A rating.

Would the evidence survive payer scrutiny? — Evidence Quality and Robustness

The evidence is primarily derived from the PACIFIC trial, which is a robust RCT. While there are some concerns regarding the extrapolation of data, the overall quality of evidence is strong, justifying an A rating.

How exposed is the case to uncertainty? — Uncertainty, Sensitivity, and Broader Impacts

There are areas of uncertainty regarding the generalizability of the PACIFIC trial and the assumptions made in the economic model. While the committee acknowledged these uncertainties, they deemed the overall impact on decision-making to be manageable, justifying a B++ rating.

Be alerted when this rating changes:

Sample two-page MARA Rating report for the fictional drug Samplinib: the rating with its decision record, and the ten graded payer questions with the reasoning behind each
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