Latest Rare Diseases News

Opthea Limited has announced a strategic pivot to develop OPT-302 for Lymphangioleiomyomatosis (LAM), a rare lung disease affecting women, aiming for ASX reinstatement in 2026. The company leverages strong intellectual property and cash reserves to pursue orphan drug designation and clinical development.

Chimeric Therapeutics has won FDA Orphan Drug Designation for its CHM CDH17 CAR-T therapy targeting gastric cancer, advancing its clinical development with regulatory incentives and potential market exclusivity.

Neuren Pharmaceuticals reported a milestone quarter with DAYBUE net sales reaching US$101.1 million, driving a 24% jump in royalty income. The expanding patient base and community physician uptake signal strong growth ahead.

Pathkey.AI reports strong validation of its TrialKey AI platform’s predictive accuracy and announces key leadership changes as it advances toward commercial scale.

Neurotech International has initiated an Authorised Prescriber program for its lead therapy NTI164, expanding access for children with neurodevelopmental disorders in Australia. The company also secured a Rare Pediatric Disease Designation from the US FDA for NTI164 in Rett Syndrome, marking a key regulatory milestone.

PYC Therapeutics has kicked off a global Phase 1b repeat dose study of its investigational drug PYC-001 targeting Autosomal Dominant Optic Atrophy, a rare genetic eye disease with no current treatments. Initial dosing has begun, with key data expected in the second half of 2026.

Neuren Pharmaceuticals has secured FDA Fast Track designation for its drug NNZ-2591 targeting Phelan-McDermid syndrome, accelerating its path through clinical development. This milestone underscores the urgent need for treatments in rare neurodevelopmental disorders.

Telix Pharmaceuticals reports a robust 53% revenue jump in Q3 2025 and raises its full-year guidance, underpinned by key reimbursement wins and expanding clinical programs.

PYC Therapeutics has reported encouraging pre-clinical results for its RNA therapy candidate PYC-002 targeting Phelan-McDermid Syndrome, supporting plans to enter human trials in 2026. The data demonstrate safety, brain distribution, and gene expression restoration in key disease regions.

PYC Therapeutics has reported positive safety outcomes from its Phase 1 trial of PYC-001 for Autosomal Dominant Optic Atrophy, paving the way for a global Phase 1/2 study later this year.

Neurotech International has secured a key FDA designation for its lead drug NTI164, advancing its potential to treat Rett syndrome with regulatory and financial benefits.

Invex Therapeutics has discontinued exclusive negotiations to acquire a rare neurological disease company due to board instability triggered by a shareholder requisition notice. Despite this setback, the company remains committed to diversifying its neurological treatment portfolio.