Primary Risk Drivers
Below is a snapshot of domains that materially influence the MARA Rating.
Clinical effectiveness
The clinical evidence from the RUBY-1 trial indicates that dostarlimab combined with platinum-based chemotherapy significantly improves progression-free survival (PFS) compared to standard chemotherapy alone, with a hazard ratio of 0.28, indicating a 72% reduction in the risk of progression or death. However, the evidence for overall survival (OS) is less mature, leading to some uncertainty about long-term benefits.
Cost effectiveness
The economic model suggests that the most likely cost-effectiveness estimate for dostarlimab is within NICE’s acceptable range, approximately £20,000 per QALY gained. This indicates that the therapy is marginally cost-effective, although uncertainties remain regarding the robustness of the economic model.
Quality of life
While specific HRQoL data is not extensively detailed in the document, patient expert testimonies suggest that dostarlimab presents minimal additional treatment burden and allows patients to maintain an active life. This indicates a moderate improvement in quality of life, although direct evidence from validated tools is lacking.
Supporting Domains
Safety and Adverse Effects
The safety profile of dostarlimab appears favorable, with patient reports indicating that adverse events are mostly minor and transient. The committee noted that the treatment does not significantly increase the treatment burden compared to standard chemotherapy.
Comparator Selection
Dostarlimab was compared against the appropriate standard of care, which is platinum-based chemotherapy. The trial design included a placebo-controlled arm, enhancing the validity of the comparison.
Patient Population and Subgroups
The trial population is representative of the intended patient population with advanced or recurrent endometrial cancer, specifically those with high microsatellite instability or mismatch repair deficiency. However, there are some concerns regarding the small sample size.
Care Pathway Integration
Dostarlimab can be integrated into existing treatment pathways with minimal disruption, as it is used in combination with standard chemotherapy. The committee noted that no new infrastructure or extensive training is required for its implementation.
Resource Use and Cost Implications
The resource implications of introducing dostarlimab are manageable, with the potential for cost savings due to its effectiveness. The economic model indicates that the budget impact is justifiable given the expected health outcomes.
Evidence Quality and Robustness
While the RUBY-1 trial provides important evidence, concerns about the small sample size and potential biases due to misclassification of patient status raise questions about the robustness of the findings. The evidence is strong but not without limitations.
Uncertainty, Sensitivity, and Broader Impacts
There are significant uncertainties regarding the long-term benefits of dostarlimab, particularly concerning the durability of treatment effects and the appropriateness of the economic model assumptions. These uncertainties could impact decision-making.
