Waskyra: A Breakthrough in Gene Therapy for Wiskott–Aldrich Syndrome
- The Rare360 Editorial Team

- Dec 19, 2025
- 3 min read
Updated: Feb 11
The U.S. Food and Drug Administration (FDA) has approved etuvetidigene autotemcel (brand name Waskyra) as the first gene therapy for treating Wiskott–Aldrich syndrome (WAS). This rare, life-threatening immunodeficiency disorder primarily affects males and can lead to severe complications.
Understanding Wiskott–Aldrich Syndrome
Wiskott–Aldrich syndrome is characterized by three main features: immunodeficiency, low platelet counts, and a tendency to bleed. Patients often face severe infections, which can significantly impact their quality of life. Traditional treatment options have been limited, making this approval particularly significant for affected families and healthcare providers.
Symptoms and Complications
Patients with WAS experience a range of symptoms. These can include:
Frequent infections due to immunodeficiency
Easy bruising and bleeding from low platelet counts
Eczema, which can be uncomfortable and distressing
The combination of these symptoms can severely affect a patient's daily life. Understanding these challenges is crucial for caregivers and healthcare professionals.
The Approval of Waskyra
Developed by Fondazione Telethon ETS, Waskyra is indicated for pediatric patients aged 6 months and older, as well as adults with a confirmed WAS gene mutation. This therapy is especially crucial for those who are eligible for hematopoietic stem cell transplantation (HSCT) but lack a suitable related donor.
Waskyra is an ex vivo cell-based therapy that utilizes the patient's own hematopoietic stem cells. These cells are genetically engineered to express a functional WAS gene, addressing the underlying cause of the disease. This innovative approach represents a significant advancement in the treatment landscape for WAS.
How Waskyra Works
Waskyra works by correcting the genetic defect that causes WAS. By using the patient's own cells, the therapy minimizes the risk of rejection. This personalized approach is a game-changer for many patients who have limited treatment options.
A Milestone for Gene Therapy
The FDA’s decision marks a major advance for the rare disease community. It is not only the first gene therapy approved for WAS but also the first gene therapy approval in the U.S. led by a non-profit sponsor. Fondazione Telethon’s decade-plus research and collaboration with clinical partners culminated in this regulatory milestone. It offers a potential therapeutic option for patients who have historically relied on supportive care or higher-risk donor transplants.
The approval of Waskyra signals broader momentum for gene therapy development in rare diseases, particularly those affecting ultra-small patient populations. It demonstrates that sustained non-profit-driven research models, combined with regulatory engagement and academic-industry collaboration, can successfully translate into approved therapies. This milestone may help de-risk future gene therapy programs, encourage investment in rare and ultra-rare indications, and expand the pipeline of curative-intent treatments across the rare disease landscape.
Implications for Patients and Families
The approval of Waskyra is a beacon of hope for families affected by Wiskott–Aldrich syndrome. It opens new avenues for treatment that were previously unavailable. Patients can now consider a therapy that targets the root cause of their condition rather than relying solely on managing symptoms.
The Emotional Impact
For families, the emotional toll of managing a rare disease can be overwhelming. The approval of Waskyra brings not only medical hope but also emotional relief. It allows families to envision a future where their loved ones can lead healthier lives.
This advancement also highlights the importance of continued research and investment in rare diseases. As we see more therapies like Waskyra emerge, the potential for improving patient outcomes increases significantly.
The Future of Gene Therapy
As we look ahead, the success of Waskyra may pave the way for additional gene therapies targeting other rare diseases. The model established by Fondazione Telethon could inspire similar initiatives, fostering a collaborative environment for research and development.
Expanding Treatment Options
The landscape of rare disease treatment is evolving. With the success of Waskyra, we may see more innovative therapies developed. This progress can lead to better outcomes for patients and families facing rare diseases.
The journey of Waskyra illustrates the power of community-driven efforts in advancing medical science. It emphasizes that with dedication and collaboration, we can achieve remarkable breakthroughs in healthcare.
Conclusion
The approval of Waskyra is a landmark achievement in the field of gene therapy. It represents hope for patients with Wiskott–Aldrich syndrome and their families. As we celebrate this milestone, we must continue to advocate for research and investment in rare diseases. Together, we can foster a future where innovative treatments are accessible to all who need them.




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