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Wolfgang Miesbach: What Goes Wrong When Approved Gene Therapies Get Withdrawn?
Apr 1, 2026, 23:00

Wolfgang Miesbach: What Goes Wrong When Approved Gene Therapies Get Withdrawn?

Wolfgang Miesbach, Professor of Medicine at Frankfurt University Hospital, shared a post on LinkedIn about a recent article by Ana Hidalgo-Simon and Claire Booth, published in Blood ICT:

”Gene therapy approved. Gene therapy withdrawn. What went wrong?

38% of all approved ATMPs in the EU have been withdrawn – not because they failed, but because the commercial model collapsed.

Zynteglo for β-thalassemia had orphan designation, PRIME status, conditional approval, accelerated assessment – and was still pulled from the market in 2022 when reimbursement negotiations failed.

Beqvez for haemophilia B: same story.

Why?

  • Most gene therapies are born in academia – outstanding science, but commercial planning is not the focus
  • Health systems run on chronic care budgets – a large one-off payment for a cure simply doesn’t fit
  • Post-approval requirements aren’t scaled for ultrarare diseases, making the economics brutal even after approval

What the authors propose is worth taking seriously:

  • Charitable foundations as marketing authorization holders — Telethon took over Strimvelis from Orchard Therapeutics in 2023, the first such transfer for an ATMP
  • The AGORA Foundation enabling cross-border access to proven therapies across Europe
  • Public benefit corporations like Rarity (US) advancing ADA-SCID gene therapy
  • Hospital exemption pathways as a structured route for ultrarare diseases
  • EU joint clinical assessments now operational from 2025 — a first step toward harmonized reimbursement

For haemophilia, this is not hypothetical – it is happening now.

The lessons from immune deficiency gene therapy are directly relevant to where we stand with hemophilia A and B gene therapies today.

Congratulations to the authors Ana Hidalgo-Simon and Claire Booth.”

Title: Advancing ATMPs for orphan diseases: redefining the roles of pharmaceutical companies and academia

Authors: Ana Hidalgo-Simon, Claire Booth

Read the Full Article on Blood ICT

Wolfgang Miesbach: What Goes Wrong When Approved Gene Therapies Get Withdrawn?

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