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Yondelis / trabectedin for the treatment of advanced soft tissue sarcoma

As of February 2021, MARA’s assessment finds Trabectedin’s reimbursement risk concentrated in quality of life, with care pathway integration 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 care pathway integration carries weight because that domain asks how the drug fits into the way care is organised today; a treatment that demands new infrastructure or displaces an established pathway faces extra scrutiny.

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

Trabectedin shows moderate clinical benefit over existing treatments for advanced soft tissue sarcoma, with median overall survival of 13.9 months compared to 6.6 months for historical controls. However, the evidence is primarily based on a Phase 2 trial and historical controls, limiting the robustness of the findings.

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

The incremental cost-effectiveness ratio (ICER) for trabectedin is approximately £34,500 per QALY gained, which is within acceptable thresholds for cost-effectiveness. The model appears robust, and the patient access scheme further enhances its economic viability.

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

No health-related quality of life data were presented for patients with advanced soft tissue sarcoma, and the manufacturer acknowledged that none were obtained from the trials. This absence of data leads to a lack of understanding of the treatment’s impact on patients’ quality of life.

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

Trabectedin has a very good safety profile, with most adverse effects being transient and reversible. The absence of cardiotoxicity or neurotoxicity, along with manageable adverse reactions, supports a strong safety profile compared to other chemotherapy agents.

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

The trials primarily used historical controls for comparison, which raises concerns about the validity of the evidence. While the use of historical controls is acknowledged due to the rarity of the condition, it limits the strength of the comparative effectiveness data.

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

The trial population included patients with advanced soft tissue sarcoma who had previously failed treatment with anthracyclines and ifosfamide. The inclusion of patients with liposarcomas and leiomyosarcomas supports the generalizability of the findings to the intended patient population.

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

Trabectedin can be integrated into existing care structures for advanced soft tissue sarcoma, typically managed by specialists in outpatient settings. This seamless integration indicates minimal disruption to current treatment pathways.

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

The economic evaluation indicates that the resource use associated with trabectedin is manageable, especially with the patient access scheme in place. The overall budget impact appears justifiable given the treatment’s benefits.

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

While the evidence from the STS-201 trial is significant, it is primarily based on Phase 2 data and historical controls, which introduces limitations and biases. The reliance on historical data for comparators raises concerns about the robustness of the evidence.

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

The uncertainties related to the cost-effectiveness model are acknowledged, but the overall context of unmet need and the potential benefits of trabectedin support its use. The treatment addresses a significant gap in options for patients with advanced soft tissue sarcoma.

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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