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Scemblix / asciminib for treating chronic myeloid leukaemia after 2 or more tyrosine kinase inhibitors

As of August 2022, MARA’s assessment finds Scemblix / Asciminib’s reimbursement risk concentrated in clinical effectiveness and care pathway integration, with cost effectiveness a strength; the current MARA Rating and full rationale are available in the report.

The assessment also weighs evidence quality and robustness: how solid the underlying evidence is on its own terms — trial design, size and endpoints — before any question of price is reached. The strength recorded in cost effectiveness carries weight because that domain asks whether the price asked stands in a defensible relationship to the benefit delivered — the core of most European reimbursement decisions.

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

Asciminib shows moderate clinical effectiveness compared to bosutinib, with higher rates of major molecular response and complete cytogenic response at 24 weeks. However, the survival benefit remains unclear due to immature data on overall survival and progression-free survival, which limits the strength of the evidence.

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

Asciminib is likely to be cost-effective, with ICER estimates below £30,000 per QALY gained compared to bosutinib, nilotinib, and dasatinib. The committee concluded that the cost-effectiveness results are acceptable, especially with the commercial arrangement in place.

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

The evidence indicates that chronic myeloid leukaemia significantly impacts quality of life, and asciminib is expected to provide a new treatment option that could improve patient outcomes. However, specific HRQoL data from validated instruments is not detailed in the document.

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

Asciminib has a favorable safety profile, with adverse effects primarily being manageable and comparable to existing treatments. The document indicates that the treatment is generally well-tolerated, although specific adverse event rates are not detailed.

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

The primary comparator, bosutinib, is appropriate as it is commonly used after two or more TKIs. The committee recognized that while other TKIs are potential comparators, bosutinib is the most relevant for the patient population targeted by asciminib.

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

The trial population is representative of the intended patient population, specifically adults with chronic-phase Philadelphia chromosome-positive CML who have been treated with multiple TKIs. The document discusses the importance of considering individual patient factors in treatment decisions.

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

Asciminib can be integrated into existing treatment pathways with minor adjustments. The document indicates that it fits within the current clinical practice for CML treatment, although some planning may be required for its implementation.

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

The economic model suggests that asciminib has a manageable budget impact, with potential cost savings compared to ponatinib. The committee noted that the treatment is likely to be resource-efficient given the commercial arrangement.

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

The evidence is based on a well-conducted RCT (ASCEMBL) with some limitations regarding survival data. While the trial provides strong evidence for molecular and cytogenic responses, the uncertainty surrounding survival outcomes affects the overall robustness.

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

There is moderate uncertainty regarding the survival benefit of asciminib, but the context of unmet need and the potential for improved quality of life support its use. The committee acknowledged the uncertainties but found them manageable within the context of the treatment pathway.

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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