Independent Market Access and Reimbursement Risk Assessment.

Built by former payers, HTA reviewers, and Industry Experts. 

Kinpeygo / budesonide for treating primary IgA nephropathy

As of October 2025, MARA’s assessment finds Kinpeygo / Budesonide’s reimbursement risk concentrated in safety and adverse effects, with cost effectiveness a strength; the current MARA Rating and full rationale are available in the report.

The assessment also weighs patient population and subgroups: how closely the trial population matches the patients who would receive the drug in practice; payers often restrict funding to the groups where the evidence is strongest. 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.

Nephrology

This rating sits within MARA’s Nephrology coverage, alongside 16 other independently assessed treatments in the same area.

What payers will ask

Is the clinical benefit the kind payers reward? — Clinical effectiveness

The clinical trial evidence from NeflgArd Nef-301 demonstrated that targeted-release budesonide plus standard care is more effective than standard care alone, particularly in patients with a UPCR of 1.5 g/g or more. The primary outcome showed a significant change in UPCR at 9 months compared to placebo, indicating a clear clinical advantage.

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

The most likely ICER for targeted-release budesonide was estimated at £4,672 per QALY gained, which is well within NICE’s acceptable range for NHS resources. This indicates a strong cost-effectiveness profile, especially when considering the potential for fewer adverse effects compared to systemic corticosteroids.

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

Patient experts highlighted that IgAN significantly impacts quality of life, with symptoms affecting daily functioning. The potential of targeted-release budesonide to delay the need for dialysis or transplant is likely to improve HRQoL, although specific validated HRQoL data were not provided.

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

Targeted-release budesonide is expected to have a better safety profile than systemic corticosteroids, with fewer serious side effects. The committee noted that while it shares a similar spectrum of adverse effects, the frequency is anticipated to be lower, supporting its use.

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

The treatment was compared against standard care, which includes ACE inhibitors and ARBs, as well as placebo in the clinical trial. This is appropriate as these are the current standard treatments for IgAN, ensuring relevant and robust comparisons.

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

The trial population was broadly representative of the UK population with IgAN, particularly those at risk of rapid disease progression. The committee confirmed that the demographic characteristics aligned well with clinical practice, enhancing generalizability.

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

Targeted-release budesonide is intended as an add-on to existing standard care, which facilitates its integration into current treatment pathways without requiring significant changes to infrastructure or training.

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

The economic model indicated that targeted-release budesonide would not only be cost-effective but could also lead to cost savings by delaying progression to higher CKD stages, which are associated with higher treatment costs.

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

The evidence is based on a well-designed Phase III RCT (NeflgArd Nef-301) with a reasonable sample size and robust methodology. However, some uncertainties remain regarding the long-term effects and the impact of retreatment.

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

While there are uncertainties regarding the long-term effects and the implications of retreatment, the overall context of unmet need and the potential benefits of delaying disease progression provide a favorable backdrop for decision-making.

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
Every MARA rating is delivered as a two-page reasoned report (sample, fictional product) — see it in full

Public record

The entries below are official decisions and assessments concerning this drug and indication, listed with their dates as a matter of record. The assessment on this page reflects the evidence available as of its date.

  • 4 February 2026 — United Kingdom (NICE), technology appraisal TA1128: recommended with conditions for primary IgA nephropathy at risk of rapid progression. official record
  • 4 March 2026 — France (HAS), transparency committee opinion: important medical benefit (SMR Important); minor added benefit (ASMR IV). official record
Full Legal Disclaimer and Usage Terms

The MARA Rating® is an independent opinion of a drug’s market access pharma risk profile and is provided for informational purposes only—not as investment, medical, legal or any other type of advice. See our full disclaimer here.