CRISPR Therapeutics

Casgevy

Active

The world's first approved CRISPR/Cas9 gene-editing medicine (exagamglogene autotemcel). A one-time therapy that edits the BCL11A gene in a patient's own blood stem cells to reactivate fetal hemoglobin, treating sickle cell disease and transfusion-dependent beta thalassemia. Partnered with Vertex Pharmaceuticals.

Latest update Sep 15, 2026

01

Current status

Approved in 39 countries across North America, Europe, and the Middle East and priced at ~$2.2M per treatment. In July 2026 the FDA expanded the US label to patients ages 2+. Uptake is ramping - >500 cumulative patient starts, >100 initiations per quarter as of September 2026, and >75 US treatment centers - though the treatment journey can still take six to nine months. Vertex booked $76M of Casgevy sales in Q2 2026.

02

Specifications3

First Approval
Nov 2023 (UK); Dec 2023 (US, SCD)
Indications
Sickle cell disease

transfusion-dependent beta thalassemia (ages 2+)

Patients Started
>500 cumulative (Q2 2026)

Announced next steps from CRISPR Therapeutics that mention Casgevy.

  1. 2026

    Scale the Casgevy commercial ramp

    Convert the 500+ started patients into infusions and grow revenue as the authorized-treatment-center network expands. Casgevy is now described as approved in 39 countries. Revenue booked by Vertex reached $76M in Q2 2026, up 78% quarter-over-quarter and 151% year-over-year. At Morgan Stanley on September 14, 2026, Kulkarni said initiations now exceed 100 per quarter, that most early reimbursement, contracting and manufacturing bottlenecks have been addressed, and that the remaining 6-to-9-month treatment journey is driven more by exchange transfusions and scheduling than by manufacturing. The pediatric ages-2+ label is a tailwind. The next official sales figure is expected with Vertex's early-November Q3 2026 results.

  1. 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 + Vertex Pharmaceuticals

05

More from CRISPR Therapeutics4

06

More in Biotech