
• YORVIPATH® (palopegteriparatide), was developed as TransCon PTH and was approved
by the U.S. Food & Drug Administration (“FDA”), and authorized by the European
Commission (“EC”) and other regulatory agencies for the treatment of adults with
hypoparathyroidism. In the European Union (“EU”), YORVIPATH is commercially available
for prescription in Germany, Austria, Spain and Luxembourg and is also available in other
countries through named patient programs. In the United States, YORVIPATH has been
commercially available for prescription since December 2024. In Japan, YORVIPATH has
been commercially available for prescription since November, 2025, through our partner
Teijin Limited (“Teijin”). YORVIPATH has also been authorized by other regulatory
authorities globally. Through December 31, 2025, more than 5,300 unique patients have
been prescribed YORVIPATH by nearly 2,400 prescribing healthcare providers in the U.S.
• SKYTROFA® (lonapegsomatropin-tcgd) was developed as TransCon hGH and approved
by the FDA for the treatment of pediatric patients one year and older who weigh at least
11.5 kg and have growth failure due to inadequate secretion of endogenous growth
hormone, also known as growth hormone deficiency (“GHD”) and for the replacement of
endogenous growth hormone in adults with GHD. SKYTROFA has been commercially
available for prescription in the United States since October 2021. In addition, the EC has
authorized SKYTROFA (lonapegsomatropin) in the EU for the treatment of children and
adolescents (3 – 18 years) with growth failure due to GHD. In the EU, SKYTROFA has
been commercially available for prescription in Germany since September 2023.
SKYTROFA has also been authorized by other regulatory authorities globally including in
China through our strategic collaboration partner, VISEN Pharmaceuticals (“VISEN”) in
January 2026.
• Endocrinology Rare Disease Pipeline – Two product candidates in our Endocrinology Rare
Disease portfolio are currently in development for additional indications and geographies.
These product candidates are TransCon hGH (lonapegsomatropin) for children with Turner
syndrome and TransCon CNP (navepegritide) for infants, children, and adolescents with
achondroplasia. We are also investigating the combination of TransCon CNP and
TransCon hGH in children with achondroplasia and other indications. In addition, we are
investigating TransCon hGH in other established daily growth hormone indications and
TransCon CNP, alone and in combination with TransCon hGH, for the treatment of
children with hypochondroplasia, a related FGFR3-driven skeletal dysplasia. Through our
strategic collaboration, Teijin is developing and, if approved, plans to commercialize
TransCon hGH, and TransCon CNP for endocrinology rare diseases in Japan. In addition,
VISEN is developing and, if approved, plans to commercialize TransCon PTH, and
TransCon CNP for endocrinology rare diseases in the People’s Republic of China, Hong
Kong, Macau, and Taiwan (“Greater China”).
• Oncology Pipeline – In Oncology, we are leveraging our TransCon technologies with the
goal of enhancing the anti-tumor effects of clinically-validated parent drugs and pathways
and to provide sustained modulation of tumor microenvironments and activate cytotoxic
immune cells. We initiated clinical development of two programs: TransCon TLR7/8
Agonist, an investigational, long-acting prodrug of resiquimod, a small molecule agonist of
Toll-like receptors (“TLR”) 7 and 8, for intratumoral delivery, and TransCon IL-2 β/γ
(onvapegleukin alfa) for systemic delivery, which is designed for prolonged exposure to an
IL-2 variant that selectively activates IL-2 β/γ with minimal binding to IL-2Rα. During the
fourth quarter of 2024, we closed enrollment in our BelieveIT-201 clinical trial and to dose
expansion cohorts involving TransCon TLR7/8 Agonist in the transcendIT-101 and IL-
Believe trials to prioritize our efforts on TransCon IL-2 β/γ.
TransCon Product Candidates Pipeline
Other than the rights we have granted to Eyconis Inc. (“Eyconis”), Novo Nordisk A/S (“Novo Nordisk”),
Teijin, and VISEN as noted in this report, we hold worldwide rights to our TransCon technologies and,
other than our royalty financing arrangements with Royalty Pharma as noted in this report, we owe no
third-party royalty or milestone payment obligations with respect to our TransCon technologies,
TransCon hGH, TransCon PTH, TransCon CNP, or any of our other product candidates.