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Rachel V Thomas

US FDA Expands Vertex's Gene Therapy for Infants With Sickle Cell Disease, Thalassemia

The US Food and Drug Administration (FDA) has expanded the approval of Vertex Pharmaceuticals' Casgevy (exagamglogene autotemcel), making it the first gene therapy approved for children as young as 2 years with sickle cell disease (SCD) and transfusion-dependent beta <a href="https://www.healthandme.com/health/thalassemia">thalassemia</a> (TDT).

Earlier, the one-time CRISPR-based gene-editing therapy was approved only for patients aged 12 years and older. The expanded label is expected to make approximately 5,500 additional children in the US eligible for treatment, the company said.

<h2>Why The Expanded Approval Matters</h2>

The FDA said earlier intervention could help prevent irreversible organ damage and improve long-term health outcomes.

“With today’s decision, pediatric patients as young as 2 years of age can now access a critical additional treatment option to treat these debilitating, life-threatening diseases,” said Karim Mikhail, Acting Director of the FDA's Center for Biologics Evaluation and Research (CBER).

"Making this therapy available to younger patients opens a critical window for intervention and gives these children a meaningful chance at a healthier future," added Megha Kaushal, Acting Deputy Director of the FDA's Office of Therapeutic Products.

Also read: <a href="https://www.healthandme.com/health-news/scientific-breakthrough-us-scientists-create-first-synthetic-cell-that-eats-and-reproduces-article-154846277" data-type="tilCustomLink">Scientific Breakthrough: US Scientists Create First Synthetic Cell That Eats and Reproduces</a>

The expanded approval is backed by clinical trial data in children aged 5 to under 12 years.

For sickle cell disease:

<ul><li>All 8 evaluable patients experienced no severe vaso-occlusive crises (painful episodes) for at least 12 consecutive months within the first two years after treatment.</li></ul>

For transfusion-dependent beta thalassemia:

<ul><li>Eight of nine evaluable patients achieved transfusion independence for at least 12 consecutive months.</li><li>The median duration of transfusion independence was 20.1 months.</li></ul>

Casgevy is a one-time gene-editing therapy that uses CRISPR technology to modify a patient's own blood stem cells, enabling the body to produce healthier red blood cells.

Also Read: <a href="https://www.healthandme.com/health-news/popular-potato-chips-brand-recalled-classified-under-highest-fda-risk-level-over-salmonella-contamination-article-154855340" data-type="tilCustomLink" target="_blank">Popular Potato Chips Brand Recalled, Classified Under Highest FDA Risk Level Over Salmonella Contamination</a>

For people with sickle cell disease, it aims to prevent painful vaso-occlusive crises. In beta thalassemia, it can eliminate the need for regular blood transfusions in many patients.

“These disorders carry a heavy burden for children and their families, affecting growth, development, and long-term health in profound ways,” said Kaushal, also a pediatric hematologist. “Grounded in the scientific evidence that earlier treatment reduces the risk of lasting end-organ damage, making this therapy available to younger patients opens a critical window for intervention and gives these children a meaningful chance at a healthier future.”

The FDA granted the expanded approval through its Commissioner's National Priority Voucher program, completing the review in 53 days.

Vertex said it has also submitted applications to expand Casgevy's use in the United Kingdom and Saudi Arabia, where regulatory reviews are currently underway.

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The US Food and Drug Administration (FDA) has expanded the approval of Vertex Pharmaceuticals' Casgevy (exagamglogene autotemcel), making it the first gene therapy approved for children as young as 2 years with sickle cell disease (SCD) and transfusion-dependent beta thalassemia (TDT).Earlier, the one-time CRISPR-based gene-editing therapy was approved only for patients aged 12 years and older. The expanded label is expected to make approximately 5,500 additional children in the US eligible for treatment, the company said.Why The Expanded Approval MattersThe FDA said earlier intervention could help prevent irreversible organ damage and improve long-term health outcomes.“With today’s decision, pediatric patients as young as 2 years of age can now access a critical additional treatment option to treat these debilitating, life-threatening diseases,” said Karim Mikhail, Acting Director of the FDA's Center for Biologics Evaluation and Research (CBER)."Making this therapy available to younger patients opens a critical window for intervention and gives these children a meaningful chance at a healthier future," added Megha Kaushal, Acting Deputy Director of the FDA's Office of Therapeutic Products.Also read: Scientific Breakthrough: US Scientists Create First Synthetic Cell That Eats and ReproducesClinical Trial ResultsThe expanded approval is backed by clinical trial data in children aged 5 to under 12 years.For sickle cell disease:All 8 evaluable patients experienced no severe vaso-occlusive crises (painful episodes) for at least 12 consecutive months within the first two years after treatment.For transfusion-dependent beta thalassemia:Eight of nine evaluable patients achieved transfusion independence for at least 12 consecutive months.The median duration of transfusion independence was 20.1 months.What Is Casgevy?Casgevy is a one-time gene-editing therapy that uses CRISPR technology to modify a patient's own blood stem cells, enabling the body to produce healthier red blood cells.Also Read: Popular Potato Chips Brand Recalled, Classified Under Highest FDA Risk Level Over Salmonella Contamination For people with sickle cell disease, it aims to prevent painful vaso-occlusive crises. In beta thalassemia, it can eliminate the need for regular blood transfusions in many patients.“These disorders carry a heavy burden for children and their families, affecting growth, development, and long-term health in profound ways,” said Kaushal, also a pediatric hematologist. “Grounded in the scientific evidence that earlier treatment reduces the risk of lasting end-organ damage, making this therapy available to younger patients opens a critical window for intervention and gives these children a meaningful chance at a healthier future.” The FDA granted the expanded approval through its Commissioner's National Priority Voucher program, completing the review in 53 days.Vertex said it has also submitted applications to expand Casgevy's use in the United Kingdom and Saudi Arabia, where regulatory reviews are currently underway.

us fda expands vertex's gene therapy for infants with sickle cell disease, thalassemia

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