Jill Wood had pinned her hopes on a little-known federal program to fund her son’s gene therapy.
The initiative, which awards vouchers to companies targeting rare pediatric diseases, offered her son a lifeline after a lack of interest from large drugmakers.
But in December, the program wasn’t extended amid last-minute negotiations on a large federal spending bill — collateral damage in an effort by President Donald Trump and his backer Elon Musk to streamline the legislation.
“I don’t think legislators realized what they were doing,” Wood said. “Hope just disappeared.”
The program’s demise was just the start of the Trump administration’s impacts on rare disease medicine, and science more broadly. In the two months since, the administration has cut staff at the NIH, and the agency’s funding is under increasing scrutiny. Meanwhile, a backlog in grant evaluations has left some research in limbo.
The White House did not respond to a request for comment.
Musk, the Tesla CEO who is leading the cost-cutting effort, has
said that “we will make mistakes
; we won’t be perfect.” He has cited the shutdown of an Ebola prevention program as an example.
But rare disease advocates, and others, say they don’t think he knows the damage done to their communities.
“We need to sit down with Elon Musk,” said Lori Sames, a parent to a teenager with
an ultra-rare disease
, who spoke to
Endpoints News
about shrinking funding opportunities for these conditions.
What’s formally known as the rare pediatric disease priority review program was established in 2012 to spur investment in overlooked conditions. It grants companies a voucher to expedite FDA drug reviews. These vouchers can be sold – they’re worth about
$100 million on the open market
– and thus provide funding to rare disease drug developers.
The program costs taxpayers nothing, though it
requires extra attention from FDA staff
. Critics say that vouchers shouldn’t be given to pharmaceutical companies that profit handsomely from more common rare diseases. That includes Vertex Pharmaceuticals,
which used vouchers
to speed reviews of cystic fibrosis drugs that bring in billions in revenue each year.
Still, detractors acknowledge the program’s role in funding therapies for the rarest of rare conditions, and are open to alternatives more tailored to these patients.
“I’m in favor of providing support in cases where a disease is so rare that there’s no prospect that the product would lead to meaningful revenues in the market,” said Aaron Kesselheim, a Harvard Medical School researcher who has published research on the program failing to live up to its public health aims.
Wood’s 16-year-old son, Jonah, was diagnosed with Sanfilippo syndrome type C. The ultra-rare condition, which results in severe brain damage and premature death, is estimated to affect around 1,000 people.
With a dearth of commercial interest, Wood started a nonprofit and then co-founded a company called Phoenix Nest that secured $13 million in grants.
That money is going toward a gene therapy and enzyme replacement treatment, along with natural history studies to gain a better understanding of how the disease progresses. But more funding is needed, and the loss of the voucher program means it will be tough if not impossible to get the therapies to the approval stage.
To ease the capital burden, the gene therapy could be eligible for accelerated approval after the
FDA signaled an openness to
leaning on biological data for a handful of deadly neurological diseases, Sanfilippo syndrome among them. The agency is moving toward
greater regulatory flexibility
when reviewing rare disease medicines.
Even with the FDA’s shift, Wood said investors are likely to hesitate without the voucher program in place. Time is in short supply.
Jonah has already outlived many with the condition. Despite his challenges, he can still communicate in single sentences and is “very sweet,” Wood said.
“He tells me he loves me 100 times a day.”
The voucher program expired in December for those who hadn’t already received the designation. (It sunsets
next year
for those who have.)
In what may be a sign of the growing scarcity of the vouchers, Zevra Therapeutics on Thursday sold one for $150 million, more than a 50% increase compared to the average sale price before the program expired.
In December, as lawmakers worked to finalize a major spending bill, Trump and Musk balked at the legislation’s scope and insisted on cuts. They didn’t object to the voucher program itself, but in the end, it was removed.
“It was solely really about the process and the narrative rather than disagreements about the policy,” said Jamie Sullivan, vice president of policy at the advocacy group Everylife Foundation for Rare Diseases.
A spokesperson for Sen. Rand Paul (R-KY), who played a major role in the budget process, declined to comment.
Efforts are underway to revive the legislation. Earlier this month, it was reintroduced in the House in the form of the Give Kids a Chance Act of 2025. It could move forward as a standalone bill or hitch a ride to a larger funding package.
Like Wood, Terry Pirovolakis said the program would make it possible to develop a gene therapy that helped his son, alongside other treatments that he’s trying to push forward.
“My concern is that there’s so much going on in the US right now that we’re going to be lost in the noise,” Pirovolakis said. “When you compound all the threats to rare disease research, basically we’ve gone back to the dark ages.”
The head of GEMMABio — one of the few companies that have recently
attracted a significant amount of funding for rare disease treatments
— said the program’s absence limits the company’s ability to expand research.
“Access to the PRV program would allow us to accelerate our research and expand its scope into other rare diseases,” GEMMABio CEO Jim Wilson said in an email.
Beyond the loss of the voucher program, rare disease advocates say the Trump administration has created additional challenges. That includes delaying or canceling NIH study sections in which expert panels consider which research to support.
Collaborations Pharmaceuticals’ study section was canceled that will decide the fate of grants supporting the company’s drug development efforts, including a potential therapy for the ultra-rare condition CLN1 Batten disease.
“Without grant funding, we would not be able to employ our staff and fund the research so we would have to look for alternative ways to fund the company,” CEO Sean Ekins said, adding those alternatives could include providing AI services to other companies.
For advocates, another blow came this week. Amid federal layoffs, the FDA and NIH abruptly postponed a two-day rare disease event that shapes the agencies’ policies. In response, frustrated families canceled travel plans and scrambled to put together their own meetups.
The agencies will “reschedule it to occur in the coming months,” an announcement on the FDA’s website said.