Novartis, Gates Foundation to Develop Accessible Gene Therapy for Sickle Cell Disease

Novartis has entered into a grant agreement with the Bill & Melinda Gates Foundation. As part of the agreement, the foundation will provide funding support for the discovery and development of a single-administration, in vivo gene therapy to cure sickle cell disease (SCD).

“Existing gene therapy approaches to sickle cell disease are difficult to deliver at scale and there are obstacles to reaching the vast majority of those affected by this debilitating disease,” said Jay Bradner, a hematologist and President of the Novartis Institutes for BioMedical Research (NIBR). “This is a challenge that calls for collective action, and we are thrilled to have the support of the Bill & Melinda Gates Foundation in addressing this global unmet medical need.”

SCD is a hereditary blood disease—one of the oldest known and most common genetic disorders. The disease affects millions around the world, with over 300,000 born with the condition annually. It disproportionately affects those of African descent, and sub-Saharan Africa bears roughly 80 percent of the disease burden. It also is common among people with ancestry from South America, Central America, and India, as well as several Mediterranean countries, such as Italy and Turkey.

SCD is a complex genetic disorder that affects the structure and function of hemoglobin, reduces the ability of red blood cells to transport oxygen efficiently and, early on, progresses to a chronic vascular disease. The disease can lead to acute episodes of pain known as sickle cell pain crises, or vaso-occlusive crises, as well as life-threatening complications. The resulting, frequent hospitalizations associated with sickle cell disease combined with an overall lack of specialized care places a significant burden on patients and their families, healthcare systems, and the overall economy. Even with today’s best available care, SCD continues to drive premature deaths and disability.

While the genetic cause of SCD has been known for decades, it’s only recently that the medical world has gained the tools to potentially fix the errant gene that causes the disease. Current clinical-stage gene-based therapies require extracting cells from a patient, altering those cells in a laboratory, and then reintroducing them to the patient through a complex procedure akin to a bone marrow transplant. The lab and manufacturing facilities and hospital infrastructure for such procedures often do not exist in the areas where SCD is most prevalent, excluding the vast majority of those with the disease from these life-changing gene therapies.

“Gene therapies might help end the threat of diseases like sickle cell, but only if we can make them far more affordable and practical for low-resource settings,” said Trevor Mundel, President of Global Health at the Gates Foundation. “What’s exciting about this project is that it brings ambitious science to bear on that challenge. It’s about treating the needs of people in lower-income countries as a driver of scientific and medical progress, not an afterthought. It also holds the promise of applying lessons learned to help develop potentially curative options for other debilitating diseases affecting low-income populations, such as HIV.”

Novartis envisions developing an accessible in vivo gene therapy for SCD that could potentially be administered once, directly to the patient, without the need to modify the cells in a lab. This would have the advantage of mitigating the need for long or repeated hospital stays or specialized lab infrastructure. To facilitate the research, the Gates Foundation has agreed to provide funding support for a research team within NIBR wholly dedicated to developing an approach to delivering this potential treatment. Novartis will provide in-kind support and access to its suite of technologies and resources.

“Novartis is proud to lead this effort to find an accessible genetic therapy for sickle cell disease, with support from the Bill & Melinda Gates Foundation,” said Lutz Hegemann, Group Head of Corporate Affairs & Global Health for Novartis. “In keeping with our purpose, we firmly believe we can use science and innovation to reimagine the way SCD is treated for patients around the world.”