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Abemaciclib for treating hormone receptor-positive, HER2-negative advanced breast cancer after endocrine therapy

As of September 2021, MARA’s assessment finds Abemaciclib’s reimbursement risk concentrated in comparator selection, with quality of life a strength; the current MARA Rating and full rationale are available in the report.

The assessment also weighs clinical effectiveness: how much additional benefit the drug demonstrated over the care patients already receive — the first question every payer asks. The strength recorded in quality of life carries weight because that domain asks whether the trial benefit shows up in patients’ daily lives, not only in the clinical endpoints.

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

Abemaciclib plus fulvestrant has shown moderate benefit in improving progression-free survival compared to placebo plus fulvestrant, with a median progression-free survival of 16.87 months versus 9.27 months. However, the improvement in overall survival is less certain, as it was not statistically significant in the post-amendment group. This indicates a moderate therapeutic impact, but the uncertainty around overall survival limits the rating.

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

The cost-effectiveness estimates for abemaciclib plus fulvestrant are considered plausible and fall within the range that NICE deems acceptable for Healthcare resources. Although there is some uncertainty regarding the ICER, the treatment is likely to be cost-effective, especially given the need for alternatives to existing therapies.

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

The treatment is valued by patients as it can delay the need for chemotherapy, which is associated with significant side effects that negatively impact quality of life. Patient and clinical expert feedback indicates that the option of a CDK4/6 inhibitor is preferred due to its potential to manage side effects better than the comparator, exemestane plus everolimus.

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

Abemaciclib plus fulvestrant has an acceptable safety profile, with manageable adverse effects such as diarrhea. While there are notable side effects, they are generally considered preferable to those associated with chemotherapy, indicating a good tolerability overall.

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

The treatment was compared indirectly with exemestane plus everolimus, which is the standard of care. However, the lack of direct head-to-head trials introduces some limitations in the robustness of the evidence regarding comparative effectiveness.

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

The trial population is broadly representative of the intended patient population, with specific subgroup analyses conducted. The inclusion of patients who had progressed on prior endocrine therapy aligns well with the target demographic for this treatment.

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

Abemaciclib plus fulvestrant can be integrated into existing treatment pathways with minor adjustments. The treatment does not require significant changes to current clinical practices, making it a feasible option for healthcare providers.

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

The treatment is expected to have a manageable budget impact, especially considering the patient access scheme that provides a discount. This makes it a viable option for the Healthcare without imposing an unsustainable financial burden.

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

The evidence base is supported by a robust Phase 3 trial (MONARCH 2) with a well-defined methodology. Although there are some concerns regarding the protocol amendment, the overall quality of evidence remains strong.

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

While there are uncertainties regarding the clinical effectiveness estimates, particularly in overall survival, the treatment addresses a significant unmet need in the patient population. The context of its use in managing advanced breast cancer adds to its favorable assessment.

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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