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A Hopium Health Nice News Feature

At Hopium Health, we like to celebrate more than just fiber-rich lentils and magnesium-powered sleep. We also cheer for hope—especially the kind made in labs with microscopes, courage, and a dash of miracle. And this week, science delivered something extraordinary.

Meet KJ Muldoon, a baby from Pennsylvania who, at just a few weeks old, became the first human ever to receive a personalized gene-editing therapy using CRISPR to treat a rare and life-threatening condition. The treatment wasn’t off the shelf—it was tailor-made just for him.

“He’s a pioneer,” said Dr. Rebecca Ahrens-Nicklas of the Children’s Hospital of Philadelphia (CHOP), who led the case.
And oh boy, what a journey it’s been.


 A Dangerous Diagnosis. A Tiny Patient. And a Big Idea.

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KJ was born with carbamoyl phosphate synthetase 1 (CPS1) deficiency, a devastating genetic disorder that causes toxic ammonia to build up in the body every time protein is eaten. If untreated, it can lead to brain damage or even death.

The options were grim: daily medications, possible long-term brain damage, or waiting for a liver transplant (only available after age one—if a donor can be found). Time was running out.

So a team of researchers at CHOP and the University of Pennsylvania said: what if we didn’t wait?


 The Genetic Surgery That Changed Everything

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Using CRISPR base-editing technology, scientists developed a customized molecular treatment that precisely targeted KJ’s faulty gene and began rewriting it.

Think of it like editing a single typo in a very long instruction manual—except the typo was threatening a baby’s life.

On February 25, KJ received his first infusion. He slept peacefully through it. The therapy involved billions of microscopic editors, programmed to locate and fix one tiny error in his liver’s DNA.

“No one had done this before,” said Dr. Ahrens-Nicklas. “It was nerve-wracking, but exciting. And it was quite a momentous day”.


 What Happened Next Was Pure Hope

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After two additional doses, something remarkable happened.

  • KJ began tolerating more protein
  • His ammonia levels dropped
  • He started eating avocado (his mom cried)
  • He could sit up, roll over, wave, and gain weight

Milestones that once felt impossible began to unfold in real time.

“Seeing him reach milestones that are important for any infant blows us away,” said Nicole Muldoon, KJ’s mother.


 Why This Changes Everything

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Let’s be clear: this isn’t just about KJ. His case could open the door for hundreds or even thousands of children with rare, deadly disorders who have no existing treatment options.

 The Big Idea?

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Instead of years of research for every single rare disease, we could now develop template gene editors that can be quickly adapted to each child’s unique mutation.

“This is the year when CRISPR-on-demand is truly born,” said Fyodor Urnov, scientific director at the Innovative Genomics Institute.
This “bespoke medicine” could bring:

  • Faster treatments for rare conditions
  • Lower development costs
  • New hope for families who’ve been told there’s nothing that can be done

“It’s going to utterly transform the way we practice medicine,” said Dr. Kiran Musunuru, one of the scientists behind KJ’s therapy.


 But What About the Ethics?

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Good question. The researchers took careful precautions, consulted with bioethics experts, and only moved forward after the FDA granted emergency permission. As far as early results go? The baby is thriving, and there have been no complications or side effects so far.

Still, researchers caution: it’s early days. KJ’s progress will be tracked for years.

But if what we’re seeing continues?

“We may have just witnessed the first step toward a future of genetic cures for those with no other hope,” said one former FDA official.


 Final Words from Hopium Health

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We believe in the power of movement, good food, and restful sleep. But we also believe in bold science, compassion, and miraculous breakthroughs.

This is one of them.

To KJ, your family, and the brave scientists behind this pioneering treatment: we’re cheering for you. And to everyone else? Let this be your daily dose of Hopium.

Baby KJ, wearing a nasal tube and sticker, smiles and reaches out while held by gloved medical staff at Children’s Hospital of Philadelphia.

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