Vertex Pharmaceuticals

Casgevy (exa-cel)

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The first approved CRISPR/Cas9 gene-editing medicine (exagamglogene autotemcel), a one-time therapy for sickle cell disease and transfusion-dependent beta thalassemia, developed and commercialized with CRISPR Therapeutics.

Latest update Jul 22, 2026

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Current status

Approved across multiple jurisdictions and priced at ~$2.2M per one-time treatment. Vertex books the revenue (~$116M in FY2025) and is scaling a global network of authorized treatment centers; on July 1, 2026 the US label expanded to patients ages 2+ (from 12+) for both sickle cell disease and transfusion-dependent beta thalassemia - the first gene therapy cleared for children as young as two - and Vertex guides Casgevy revenue to roughly triple in 2026.

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Specifications2

First Approval
Nov 2023 (UK); Dec 2023 (US)
Patients Started
>500 cumulative (Q1 2026)
  1. Court says Vertex Casgevy fertility perk is a kickback

    The US Court of Appeals for the District of Columbia Circuit on September 4, 2026 affirmed a lower-court finding that Vertex's program offering fertility-preservation services to Casgevy patients violates the federal Anti-Kickback Statute. The court said the perk was remuneration meant to induce purchase of the multimillion-dollar sickle-cell gene therapy. Bloomberg Law reported the panel stopped short of affirming a separate lower-court conclusion, leaving Vertex to recast how it supports patients through Casgevy's fertility risks.

    Bloomberg Law Law360

  2. FDA expands Casgevy gene therapy to children as young as 2

    The U.S. FDA on July 1 approved expanded use of Casgevy (exagamglogene autotemcel) - the world's first approved CRISPR/Cas9 gene-editing medicine, developed by Vertex Pharmaceuticals with CRISPR Therapeutics - for patients ages 2 and older with sickle cell disease or transfusion-dependent beta thalassemia, lowering the prior age floor of 12. Vertex said the expansion makes roughly 5,500 additional U.S. children newly eligible for the one-time therapy. CRISPR shares rose about 8% and Vertex about 6% on the news; CRISPR retains roughly 40% of Casgevy's economics under the partnership.

    Vertex Pharmaceuticals Healio + CRISPR Therapeutics

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