New Center for Therapeutic Genetics to Develop Rare Disease Genetic Medicines

It’s estimated that nearly 400 million people across the globe live with a rare disease. Though many of these diseases are progressive, debilitating, and even life-threatening, less than five percent of them have an effective and approved treatment.

Nearly half of the rare disease patients are children and it’s estimated that 30% of children with a rare disease will not survive past their fifth birthday. Though there have been some major successes in developing and providing treatment for some children with rare disease, including Baby KJ Muldoon—who was the first patient to receive a personalized CRISPR gene editing therapy—N = 1 therapies are challenging on many levels, and these stories cannot be the functional standard practice for treating patients with rare disease.

“What if treating genetic disease could be as routine as life-saving surgery?” ask David Liu, PhD, core institute member at the Broad Institute, and Winston Yan, MD, PhD, physician-scientist at the Broad institute and director of the new Center for Therapeutic Genetics (CTG) which is working to answer this very question.

“Scaling and sustaining treatment for ultra-rare disease is a hard problem that many scientists, clinicians, patients, and drug developers are working on,” says Yan.

Along with Yan and Lui, the CTG is founded by leaders in genetic medicine, including Cat Lutz, PhD, vice president, of The Jackson Laboratory’s rare disease translational center, Timothy Yu, MD, PhD, physician and researcher at Boston Children’s Hospital, and Wendy Chung, MD, PhD, chief of pediatrics at Boston Children’s Hospital. Their aim is simple: to develop genetic medicines that can treat patients with rare diseases in a scalable and repeatable way, while sharing the methods, data, and training learned through this practice.

“What we have here is a group of leaders who believe that by approaching genetic medicines not as products, but as a standardized clinical procedure, and by sharing what we learn openly across institutions, we can make precision genetic medicine faster, safer, less expensive, and more accessible to patients and families in need,” says Yan.

The impetus behind developing the CTG is centered on patient care and utilizing ever growing biotechnology.

“We receive messages every week from parents asking for help: Can we do for their child what has been done for other children who have received treatments?” shares Liu. “The honest answer today is usually ‘not yet,’ often not because the science doesn’t exist, but because we don’t yet have the infrastructure to bring these treatments to many patients. CTG is our commitment to closing that gap, so that eventually every family who needs this kind of treatment has a path forward.”

Though the center is in its founding phase and not yet working with patients, the programs are anticipated to include the development of precision gene-editing treatments for multiple diseases, including rare forms of genetic epilepsies, supported by a recent $34.5 million award from the ARPA-H THRIVE program.

“What we are building together is scalable treatment, something our institutions will learn to do well and repeat again and again. At Boston Children’s, we see children every day for whom a diagnosis is only the beginning of a much longer journey,” says Chung.

By utilizing technology, like CRISPR or base editing or prime editing, the goal is to develop a scalable system, not just one-off treatments. The founders of CTG aim to develop programmable and modular medicines that can be customized to the patient needs, not unlike the tailored pre-operational plans that are developed for each patient undergoing a standard practice surgery.

“We used to see precisely tailored therapies for children with genetic diseases as remarkable exceptions. CTG is built on the conviction that they don’t have to be—that the methods we develop for one rare disease will carry to the next, and eventually to the many,” says Yu.

Lutz concurs, adding, “We are at a moment in genomic medicine where, for many rare diseases, the question is no longer whether we can treat them, but whether we will build the systems to do it.”

Standardizing precision medical care using programmable genetic medicines for treating rare diseases is only the beginning. Best practices and processes for addressing rare disease can translate to treating more widespread diseases as well.

“CTG exists to close a major gap in care and ensure that what we learn from one disease accelerates treatment for the next,” concludes Chung.

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Curcumin attenuates α-synuclein pathology in Parkinson’s disease model mice through modulation of UBC9-associated SUMOylation signaling

BackgroundPost-translational modifications, particularly SUMOylation, plays a crucial role in α-synuclein (α-syn) aggregation, a key pathological feature of Parkinson’s disease (PD). Curcumin, a natural polyphenol, has shown neuroprotective potential, but its effects on SUMOylation-related signaling in PD remain unclear.ObjectiveThis study aimed to investigate whether curcumin modulates α-syn SUMOylation and to elucidate the underlying molecular mechanisms in PD model mice.MethodsA PD model was established in male C57BL/6 mice via unilateral intrastriatal injection of α-syn preformed fibrils (PFFs). Six months after α-syn PFFs injection, mice were treated intravenously with curcumin (25 mg/kg/day) or vehicle for 1 month. Behavioral tests (open field, rotarod) assessed motor function. Neuropathology was evaluated by immunohistochemistry and western blotting for tyrosine hydroxylase (TH), phosphorylated α-syn (p-syn), SUMOylation pathway components (SUMO1, SAE2, UBC9, PIAS1/2), and ubiquitin. Striatal dopamine levels were measured by HPLC.ResultsCurcumin treatment ameliorated motor deficits and anxiety-like behaviors in PD mice. It partially preserved dopaminergic neurons and reduced p-syn aggregation in the substantia nigra, accompanied by increased striatal dopamine levels. Mechanistically, curcumin was associated with reduced SUMO1 and increased ubiquitin levels, suggesting modulation of SUMOylation-related signaling. Among SUMOylation enzymes, UBC9 expression was decreased, whereas E1 (SAE2) and E3 (PIAS1/2) components were not substantially affected.ConclusionOur findings demonstrated that curcumin exerted neuroprotective effects in a PD model by attenuating α-syn pathology. The protective mechanism involves the inhibition of α-syn SUMOylation, primarily through the downregulation of the UBC9 enzyme. This study identifies UBC9-mediated SUMOylation as a potential target for curcumin and highlight a promising strategy for modifying α-syn-associated pathology in PD.

Targeting mitochondria for the treatment of neurodegenerative diseases

Mitochondria are central regulators of cellular metabolism, redox balance, calcium signaling, and cell survival, making them essential for neuronal function. Because neurons rely heavily on mitochondrial oxidative phosphorylation to meet their high energetic demands, mitochondrial dysfunction has emerged as a key pathogenic driver in major neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, and amyotrophic lateral sclerosis. Defects in mitochondrial bioenergetics, excessive reactive oxygen species production, impaired mitochondrial dynamics, disrupted mitophagy, and dysregulated calcium handling collectively contribute to neuronal damage, synaptic dysfunction, and neuroinflammation. These insights have prompted growing interest in therapeutic strategies that directly target mitochondria to restore organelle homeostasis. Recent advances in chemical biology and nanomedicine have enabled the development of mitochondria-targeted ligands, peptide-based targeting systems, and carrier or nanotechnology-enabled delivery platforms designed to overcome biological barriers and selectively deliver therapeutic cargos to mitochondria within the central nervous system. In this Review, we summarize mitochondrial pathological mechanisms in neurodegenerative diseases and discuss emerging mitochondria-targeted therapeutic strategies, highlighting delivery technologies, therapeutic modalities, and translational challenges. Although most strategies remain at the preclinical or proof-of-principle stage, these advances are beginning to shape a conceptual framework for precision mitochondrial medicine, with the longer-term goal of developing disease-modifying interventions for neurodegenerative disorders.

Bespoke ASOs Cut Seizures, Boost Skills in Rare Epilepsy Syndrome

Two children with an ultra-rare epilepsy linked syndrome called SCN2A-developmental and epileptic encephalopathy (DEE) have been treated with personalized antisense oligonucleotide (ASO) therapies for their specific genetic mutations.

Both children, 9 and 14-year old boys, experienced significant improvements from the therapy. They both had less seizures and could cut back or stop some of the anti-seizure medications. They also achieved improvements in language and motor skills, with the older patient walking independently for the first time after being treated.

SCN2A‑DEE is a severe early‑onset epilepsy syndrome caused by pathogenic variants in the SCN2A gene, which encodes a voltage‑gated sodium channel in excitatory neurons. These variants typically lead to DEE with difficult‑to‑control seizures and profound neurodevelopmental impairment and impact around 16,000 people in the U.S.

Like many rare diseases, children with SCN2A‑DEE often have different mutations, albeit in the same gene. “The therapy is deliberately designed to target the individual’s genetic diagnosis,” said principal investigator Olivia Kim‑McManus, MD, associate professor of neurosciences at UC San Diego School of Medicine and director of the Rady Precision Therapeutics Neuro-Interventional Program at Rady Children’s Hospital San Diego, in a press statement. “The ASO modifies genetic expression and what proteins are expressed.”

This study, which is published in Nature Medicine, involved investigation, design, and treatment of the two boys in parallel. To begin with, the researchers designed allele‑selective ASOs targeting heterozygous intronic SNPs in SCN2A to suppress the mutant transcript while sparing the wild-type copy.

They then ran two parallel first‑in‑human N-of-1 trials for the two boys with individualized dosing. The primary endpoints were seizure frequency and neurodevelopment, plus phenotype‑tailored measures like impact on autism-like symptoms, movement problems, and gastrointestinal function.

Notably, the team scanned 19 infants with related SCN2A disorders and found that three of them could be eligible for treatment with the same ASO as the one given to the 14 year old boy in the future, as it is designed to treat a number of different mutations on the SCN2A gene.

Both boys had fewer seizures on the customized drug. The younger child had an estimated 26% reduction and could come off phenytoin treatment without losing overall control, while the older child’s seizures fell by about 90%, with longer seizure‑free stretches and less need for rescue medication.

Families and clinicians also saw improvements in motor function, abnormal movements, communication and gastrointestinal symptoms, and no serious safety signals emerged from the study.

“We’ve seen changes across the board, showing that targeting the root genetic cause can produce measurable improvement,” said Kim‑McManus.

One key improvement was that the older child began to walk on his own for the first time. “Since then, he’s been walking independently,” said Kim-McManus. “When we really think about precision therapy in a personalized way, you can’t get more personalized than that.”

The researchers are now hoping to use a similar approach to treat more children with SCN2A-related disorders as well as other monogenic conditions.

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