Sign in to continue:

Saturday, August 1st, 2026

Sirnaomics Announces First Patient Dosed in Phase II Trial of STP705 for Aesthetic Fat Reduction Using RNA Therapeutics 1





Sirnaomics Ltd. Achieves Key Milestone with First Patient Dosed in Phase II Clinical Trial of STP705 for Medical Aesthetic Applications

Sirnaomics Ltd. Achieves Major Milestone: First Patient Dosed in Phase II Trial of STP705 for Aesthetic Applications

Key Highlights

  • Sirnaomics Ltd. (HKEX: 2257) has successfully administered the first dose in its Phase II clinical trial evaluating STP705 for medical aesthetic use.
  • The trial marks a significant advancement in the company’s global RNA therapeutics pipeline, especially in the field of medical aesthetics.
  • STP705 is being tested for its efficacy in targeted subcutaneous adipose (fat) reduction using local administration, representing a minimally invasive alternative to traditional fat-reduction treatments.
  • The trial utilizes Sirnaomics’ proprietary PNP oligonucleotide delivery platform, enabling site-specific gene modulation for controlled adipocyte (fat cell) depletion.
  • The study’s primary endpoint is to systematically evaluate STP705’s clinical efficacy, with secondary endpoints assessing safety, tolerability, and local treatment reaction profiles.
  • Clinical results from this Phase II study are expected to be pivotal for the further global development of Sirnaomics’ aesthetic assets and may strengthen the company’s position in the extrahepatic siRNA delivery market.

Details of the Phase II Clinical Trial

The ongoing multi-center Phase II clinical trial is designed to systematically evaluate the clinical efficacy of STP705 in reducing targeted subcutaneous fat through local injections. The study also involves rigorous secondary assessments, including safety profiles, tolerability, and the nature of local treatment reactions.

The successful first dosing of a patient is a critical milestone, marking the transition from pre-clinical to mid-stage clinical development. This event demonstrates progress in Sirnaomics’ efforts to develop innovative, minimally invasive therapies for aesthetic indications, potentially offering an alternative to existing, more invasive fat reduction procedures.

The proprietary PNP platform, which powers STP705, is considered a core technological advantage for Sirnaomics. It is designed to deliver oligonucleotides efficiently to targeted tissues, enabling precise gene modulation and promoting the selective depletion of adipocytes.

Successful clinical readouts from this trial will be important in shaping the future development and potential commercialization of the STP705 program globally, and could have a significant impact on the company’s market position.

Implications for Shareholders and Investors

  • This milestone could be material to Sirnaomics’ valuation. Success in the Phase II trial would not only support further clinical development but could also enhance the company’s standing in the competitive RNA therapeutics and medical aesthetics markets.
  • The company’s proprietary extrahepatic siRNA delivery technology, if proven effective in humans, may open up a broad array of new indications and revenue opportunities.
  • However, investors should note that there is no guarantee of ultimate success or commercialization of STP705. The company has explicitly warned that success in this trial is not assured and that further development risks remain.
  • Shareholders and potential investors are advised to exercise caution when trading Sirnaomics shares, as clinical trial outcomes can materially impact share price volatility.

Board and Governance Updates

The Board of Sirnaomics Ltd. is chaired by Dr. Poon Hung Fai (Executive Director), with Dr. Yin Huijun (Non-Executive Director), and independent non-executive directors Mr. Wong Yu Shan Eugene, Dr. Zhang Peng, and Ms. Lo Yee Hang.


Disclaimer: This article is for informational purposes only and does not constitute investment advice. The ultimate success of Sirnaomics’ STP705 candidate is not guaranteed, and clinical trial outcomes remain uncertain. Investors should exercise due diligence and consult professional advisors before making any investment decisions.




View SIRNAOMICS-B Historical chart here