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BioWorld - Saturday, May 30, 2026
Home » Topics » Disease categories and therapies » Rare disease

Rare disease
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One dice with a green checkmark, red X and gray question mark.

State of the biopharma industry filled with uncertainty

Feb. 25, 2026
By Mari Serebrov
No Comments
While the annual State of the Union address has morphed over the years from a summation of the state of the U.S. government and the president’s legislative agenda into political theater on both sides of the aisle, President Donald Trump did include some recommendations to Congress in his Feb. 24 speech. Among those recommendations was a request for Congress to codify his most-favored-nation pricing policy for prescription drugs.
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New FDA guidance details ‘plausible mechanism’ pathway

Feb. 23, 2026
No Comments
The U.S. FDA rolled out its anticipated “plausible mechanism” draft guidance, enabling ultrarare disease drug developers to generate evidence of effectiveness and safety to support approval when randomized controlled trials are not possible due to small patient populations.
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CRISPR Cas9 illustration

Intellia’s nex-z moves ahead, but only for ATTR-PN for now

Jan. 27, 2026
By Karen Carey
No Comments
Following a clinical hold last October of Intellia Therapeutics Inc.’s Magnitude and Magnitude-2 phase III trials of CRISPR/Cas9 gene editing therapy nexiguran ziclumeran (nex-z) to treat transthyretin amyloidosis with cardiomyopathy (ATTR-CM) and polyneuropathy (ATTR-PN), respectively, the U.S. FDA lifted the hold on Magnitude-2, pushing the company’s shares up by 22% in early trading Jan. 27.
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Sunlight shines through window as curtains opened

Tanabe’s dersimelagon hits phase III endpoint in rare disorder

Jan. 27, 2026
By Marian (YoonJee) Chu
No Comments
After selling off amyotrophic lateral sclerosis therapeutics last month, Tanabe Pharma America Inc. emerged a forerunner in another rare disease space with positive top-line phase III data of dersimelagon (MT-7117) for erythropoietic protoporphyria/X-linked protoporphyria.
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U.S. Capitol and $100 bills

NIH spared slash-and-burn in congressional spending agreement

Jan. 21, 2026
By Mari Serebrov
No Comments
The good news is that the U.S. Congress is on track to pass a slate of fiscal 2026 spending bills before the current continuing resolution expires Jan. 30. So, barring any last-minute disputes or legislative hostage-taking, there should be no repeat of last year’s 43-day shutdown that impacted NIH grants and activities.
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Sunlight shines through window as curtains opened

Tanabe’s dersimelagon hits phase III endpoint in rare disorder

Jan. 21, 2026
By Marian (YoonJee) Chu
No Comments
After selling off amyotrophic lateral sclerosis therapeutics last month, Tanabe Pharma America Inc. emerged a forerunner in another rare disease space with positive top-line phase III data of dersimelagon (MT-7117) for erythropoietic protoporphyria/X-linked protoporphyria.
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FDA Approved stamp

US FDA clears Sentynl’s Zycubo as first treatment for Menkes

Jan. 13, 2026
By Karen Carey
No Comments
The U.S. FDA has approved Zycubo (copper histidinate) as the first treatment for Menkes disease, a rare, genetic disease affecting children who cannot absorb copper through their intestines, leading to seizures, weak muscles, a failure to thrive and, ultimately, if left untreated, an early death by age 3.
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Atara, Pierre Fabre: FDA flipflops on Ebvallo’s rare disease BLA

Jan. 12, 2026
By Karen Carey
No Comments
A second complete response letter issued by the U.S. FDA for Atara Biotherapeutics Inc.’s allogeneic T-cell immunotherapy Ebvallo (tabelecleucel) for Epstein-Barr virus positive post-transplant lymphoproliferative disease is “a complete reversal of position” by the agency, which had previously confirmed the single arm Allele trial was enough to support a BLA under the accelerated approval pathway, the company said.
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FDA takes flexibility, modernization steps in CGT, Rx development

Jan. 12, 2026
By Mari Serebrov and Nuala Moran
No Comments
Moving away from a one-size-fits-all approach, the U.S. FDA's CBER released details Jan. 11 about how it’s leveraging its growing experience with cell and gene therapies (CGTs) to exercise greater regulatory flexibility in chemical, manufacturing and control requirements for the products.
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Drugs to Watch 2026 cover

Drugs to Watch 2026: 11 therapies that could transform patient care

Jan. 6, 2026
By Tamra Sami
No Comments
The newly released 2026 edition of Clarivate’s Drugs to Watch report highlights 11 potential blockbusters that could change treatment paradigms for patients.
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