RARECast

Rare diseases are often thought about in terms of the financial burden they create, but a new paper from the World Economic Forum urges policymakers, payers, and business leaders to see them as one of the greatest underappreciated opportunities in global health. In “Making Rare Diseases Count: How Better Data Can Unlock a Multi-Trillion Dollar Opportunity,” the organization argues that high-quality, patient-centered data m...

A single genetic diagnosis can ripple through generations and reshape medical care for an entire family. Cascade genetic testing, the offering of targeted genetic testing to biological relatives of a person in whom a disease-causing variant has already been identified, can find at‑risk relatives, improve outcomes, and save costs through early treatment and prevention. We spoke with Rajani Aatre, senior genetic counselor at...

Autoimmune diseases like myasthenia gravis have long forced patients to trade daily function for chronic immunosuppression, but Cartesian Therapeutics is betting that its experimental RNA‑engineered CAR T cells can rewrite that equation. The company’s lead experimental therapy, Descartes‑08, is designed to deliver deep, durable remissions through a short course of outpatient infusions that selectively eliminate the plasma ...

Drug development has long been a costly, trial-and-error effort, with nine out of ten clinical programs failing despite major scientific advances. One reason is that biological information remains fragmented in silos, and traditional R&D approaches often rely on narrow, task-specific datasets. Bioptimus aims to change this by using AI to build a foundation model that integrates multimodal, multiscale biologic...

Shimon Sakaguchi shared the 2025 Nobel Prize in Physiology or Medicine for his identification of regulatory T cells that suppress autoimmune responses. His work laid the foundation for RegCell, a company he co-founded to develop cell therapies that provide targeted treatments for autoimmune disease without compromising healthy immune function. RegCell epigenetically reprograms patient T cells into regulatory T cells. We sp...

When a toddler with a neurodevelopmental delay, poor muscle tone, and no hair came to Caleb Bupp’s genetics clinic, it led not only to the discovery of a new, ultra-rare disease, but the identification of a potential treatment in DFMO, a drug long used to treat a chronic parasitic disease. Bupp is now collaborating with others including Every Cure, a nonprofit biotech working to expand the use of repurposed drugs. While a ...

Amber Freed transformed the shock of her son’s diagnosis with an ultra-rare neurodevelopmental disorder into a determined campaign for gene therapy. With no clinical roadmap, sparse literature, and doctors offering only symptomatic care, she taught herself biology basics, established a nonprofit, and assembled a scientific team. She focused on gene replacement therapy as the most viable path, and son became the first patie...

Tuberous sclerosis complex is a rare genetic condition caused by changes in the TSC1 or TSC2 gene that over-activate a key growth-control pathway, known as mTOR. This leads to seizures that often don’t respond to existing medicines and to noncancerous tumors in organs such as the brain, kidneys, lungs, and skin. In fact, more than 65 percent of people with TSC-related epilepsy still have seizures despite available treatmen...

​The Oxford-Harrington Rare Disease Centre represents a transatlantic alliance created to bridge academic research and drug development for rare diseases. Founded in 2019 by the United Kingdom’s University of Oxford and the Cleveland-based Harrington Discovery Institute, the center leverages Oxford's world-class rare disease research and Harrington's pharmaceutical-scale expertise to address translational challenges and ad...

Floyd Stewart was diagnosed with late-stage nasopharyngeal carcinoma, a rare, fast‑growing head and neck cancer that advanced quietly until it appeared as a bulge in his neck. The diagnosis became a struggle for his entire family as his treatments reshaped family life for Floyd, his wife Monique, and their four children. We spoke to the Stewarts about how they navigated the healthcare system, the strain the experience put ...

There have been great advances in the treatment of cystic fibrosis, but nevertheless it remains a progressive, life‑shortening genetic disease as many patients still don’t reach normal function and continue to face infections, exacerbations, and impaired quality of life. Siona Therapeutics is building a new generation of small‑molecule therapies that directly stabilize the region most affected by the most common mutation u...

As a college student, Megan Beaulieu first noticed her smile faltering and her arms growing weak, which she chalked up to stress and exhaustion. Within weeks, her symptoms had worsened to the point that she could no longer lift her hands to wash her hair—a progression that led to her diagnosis of myasthenia gravis, a rare autoimmune neuromuscular disease. Since then, she has taken to TikTok to share her journey. We spoke w...

Dermatomyositis is a rare multi-organ autoimmune condition that primarily affects the skin and muscles. It causes fatigue, muscle weakness, and painful skin rashes. Treatment for the condition has long centered on the use of chronic systemic steroids, which can carry long‑term toxicity. Priovant is developing brepocitinib, a dual TYK2/JAK1 inhibitor originally developed at Pfizer to treat the condition. We spoke to Ben Zim...

Veteran biotech investors Steven St. Peter and Luke Evnin launched Vie Ventures to bridge traditional venture capital with disease-focused philanthropy to target autoimmune and immune-mediated diseases. The fund partners with large patient organizations, such as the Lupus Research Alliance and Scleroderma Research Foundation, to invest in series B and C rounds in clinical-stage companies. We spoke to St. Peter, co-founder ...

When Nikki McIntosh’s son Miles was less than a year old, he was diagnosed with a form of the rare neuromuscular condition spinal muscular atrophy. Since then, she has needed to learn how to manage the complexities of her own life while managing Miles’ care, coordinating his providers; and navigating the medical, financial, and emotional aspects of raising a child with a rare disease. McIntosh has shares her experience in ...

Spinocerebellar ataxia is a group of inherited, heterogeneous neurodegenerative diseases affecting coordination, speech, and vision. There are currently no FDA approved therapies for the more than 50 known types of SCA​, but there is a growing pipeline of therapeutic candidates. We spoke to Andrew Rosen, CEO of the National Ataxia Foundation, about the challenges of developing therapies for spinocerebellar ataxia, the crit...

A recent report from the health research network and real-world data platform TriNetX argues that by aggregating electronic health records, billing claims, and registry data across hundreds of healthcare sites makes it possible to study rare diseases more efficiently. Doing so could enable access to enough patient data to conduct meaningful research, which is often impossible through traditional clinical trials. We sp...

Huntington’s disease is a rare, inherited neurodegenerative disorder caused by a type of genetic mutation known as a trinucleotide repeat expansion, which leads to the production of a toxic protein that causes progressive brain cell loss. Vico Therapeutics is developing an experimental antisense oligonucleotide to treat the condition. Because the therapy targets the repeat expansion itself, rather than a specific gene, it ...

After Philippa Ward’s five-month-old son, Thomas, suffered infantile spasms, he was soon diagnosed with tuberous sclerosis complex—a rare genetic disorder that causes noncancerous tumors to form on various organs, including the brain. Thomas experiences near-daily seizures, cannot communicate verbally, and, due to delayed motor skills, often requires the use of a wheelchair. We spoke to Ward about her journey as the mother...