Thiogenesis Receives FDA Rare Pediatric Disease Designation for TTI-0102 for the Treatment of Leigh Syndrome
Rhea-AI Summary
Thiogenesis Therapeutics (TSXV: TTI, OTCQX: TTIPF) reported that the U.S. FDA has granted Rare Pediatric Disease (RPD) designation to its lead candidate TTI-0102 for the treatment of Leigh syndrome, a serious mitochondrial disorder primarily affecting children.
According to Thiogenesis, RPD designation makes the company eligible, upon potential future NDA approval for TTI-0102, to receive a Priority Review Voucher (PRV). A PRV can be used to obtain priority review for another marketing application or sold to another sponsor, and has historically been a valuable strategic asset for biotechnology companies. The company highlighted this as an important regulatory milestone that broadens its regulatory portfolio.
Thiogenesis also noted that, since obtaining prior FDA IND clearance, it has refined the planned Phase 2 trial of TTI-0102 for the Leigh syndrome spectrum by integrating pharmacokinetic insights from its MELAS clinical program, and is completing final start-up activities before initiating the Phase 2 study.
Positive
- FDA Rare Pediatric Disease designation granted for TTI-0102 in Leigh syndrome
- Potential future Priority Review Voucher upon NDA approval for TTI-0102
- Advancement toward Phase 2 trial initiation for TTI-0102 in Leigh syndrome
- Phase 2 protocol refined using pharmacokinetic learnings from MELAS program
Negative
- None.
News Explained
The disclosure adds a conditional Priority Review Voucher opportunity while TTI-0102 remains before Phase 2 initiation.
In its
The release describes the designation as applying to therapies for serious or life-threatening diseases primarily affecting children through age 18. If a future New Drug Application is approved, the company says it may receive a Priority Review Voucher that could be used for priority review of another application or sold to another sponsor.
The next stated milestones are completion of study start-up activities and initiation of the Phase 2 trial; the release reports no clinical data from that trial.
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San Diego, California--(Newsfile Corp. - July 13, 2026) - Thiogenesis Therapeutics, Corp. (TSXV: TTI) (OTCQX: TTIPF) ("Thiogenesis" or the "Company"), a clinical-stage biotechnology company developing novel sulfur-based thiol therapies for rare pediatric, metabolic and mitochondrial disorders, today announced that the U.S. Food and Drug Administration ("FDA") has granted Rare Pediatric Disease ("RPD") designation to its lead candidate, TTI-0102, for the treatment of Leigh syndrome.
The FDA grants RPD designation to therapies intended to treat serious or life-threatening diseases that primarily affect children from birth through 18 years of age. The designation provides the Company with the potential, upon approval of a future New Drug Application ("NDA"), to receive a Priority Review Voucher ("PRV"), which may be redeemed to obtain priority review of another marketing application or sold to another sponsor. Historically, PRV's have represented valuable strategic assets for biotechnology companies.
"Receiving Rare Pediatric Disease designation is an important regulatory milestone for our Leigh syndrome spectrum program and further expands Thiogenesis' regulatory portfolio," said Patrice Rioux, M.D., Ph.D., Chief Executive Officer of Thiogenesis. "The designation recognizes the significant unmet medical need in Leigh syndrome and reinforces our confidence in the potential of TTI-0102 to address that need."
"Since receiving FDA clearance of our IND, we have strengthened our Phase 2 protocol by incorporating important pharmacokinetic learnings from our MELAS clinical program. We are now completing final study start-up activities and look forward to initiating the Phase 2 trial and generating clinical data."
About Thiogenesis
Based in San Diego, California, Thiogenesis Therapeutics Corp. (TSXV: TTI) (OTCQX: TTIPF) is a clinical-stage biotechnology company developing TTI-0102, a patented new chemical entity designed to deliver sustained cysteamine exposure through proprietary prodrug chemistry rather than conventional controlled-release formulation technology. This differentiated approach is intended to improve tolerability, convenience and therapeutic exposure relative to existing cysteamine therapies. The Company's lead program is in nephropathic cystinosis, where TTI-0102 is advancing toward late-stage clinical development. Thiogenesis is also developing TTI-0102 for primary mitochondrial diseases, including Leigh syndrome spectrum, and is preparing to initiate a Phase 2 clinical trial.
For further information, please contact:
Brook Riggins, Director and CFO
Email: info@thiogenesis.com
Tel.: (888) 223-9165
Forward-Looking Statements
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