Primary Risk Drivers
Below is a snapshot of domains that materially influence the MARA Rating.
Clinical effectiveness
The evidence from the STEP 1 trial indicates that semaglutide leads to significant weight loss compared to placebo, with a mean percentage change in body weight of -12.4% over 68 weeks. Additionally, semaglutide is shown to be more effective than liraglutide, with a weight loss difference of -5.81%. This demonstrates a clear clinical advantage over existing treatments.
Cost effectiveness
The cost-effectiveness estimates for semaglutide are within acceptable thresholds, with the company’s base-case ICER reported at £14,827 per QALY gained. This suggests that semaglutide is a cost-effective option for the target population, particularly when considering the significant health benefits associated with weight loss.
Quality of life
While the document does not provide extensive HRQoL data, it indicates that semaglutide improves weight management, which is likely to enhance overall well-being and daily functioning. The committee noted the psychological and physical effects of obesity, suggesting that effective weight management could lead to improved quality of life.
Supporting Domains
Safety and Adverse Effects
The safety profile of semaglutide is acceptable, with the committee noting that adverse events are manageable and primarily mild to moderate. The clinical experts indicated that the treatment is well-tolerated, which supports its use in the recommended population.
Comparator Selection
The comparators selected for the evaluation, including weight management support and liraglutide, are appropriate and reflect current clinical practice. The committee agreed that these comparators are relevant for assessing the effectiveness of semaglutide.
Patient Population and Subgroups
The trial population is broadly representative of the intended patient population, although there are some limitations regarding the inclusion of individuals with type 2 diabetes. The committee acknowledged that the target population for semaglutide includes those at higher risk for obesity-related complications.
Care Pathway Integration
Semaglutide is designed to be integrated into existing specialist weight management services, which are necessary for its effective use. The committee emphasized that these services provide the multidisciplinary support required for successful treatment.
Resource Use and Cost Implications
The resource implications of implementing semaglutide are manageable, particularly given the cost-effectiveness estimates. The committee noted that the treatment is likely to be affordable within the context of Healthcare resources, especially for the target population.
Evidence Quality and Robustness
The evidence base is robust, primarily derived from the STEP 1 trial, which is a well-designed RCT. While there are some uncertainties regarding the generalizability of the results, the overall quality of evidence supports the effectiveness of semaglutide.
Uncertainty, Sensitivity, and Broader Impacts
There are notable uncertainties regarding the long-term effects of semaglutide and the assumptions made in the economic model. The committee recognized these uncertainties but concluded that the treatment is still likely to be beneficial for the target population.
