AOD-9604

clinical trials

Also known as: hGH Fragment 177-191 (modified)

**Mechanism of Action:** AOD-9604 is a synthetic modified peptide corresponding to amino acids 177–191 of the C-terminal region of human growth hormone (hGH). Unlike full-length hGH, it selectively stimulates lipolysis by activating hormone-sensitive lipase in adipose tissue via a cAMP-dependent pathway, without binding to the growth hormone receptor. This design avoids the insulin-like growth factor-1 (IGF-1) release and anti-insulin effects associated with native hGH, thereby preventing growth-promoting or glycemic side effects. **Key Research Findings:** Preclinical studies demonstrate that AOD-9604 reduces body weight and fat mass in rodent models of obesity, with enhanced lipid mobilization from visceral and subcutaneous depots. In clinical trials, phase II studies reported modest reductions in waist circumference and body fat percentage in overweight adults over 12–24 weeks, though results were not consistently superior to placebo. Notably, the peptide did not alter glucose tolerance, insulin sensitivity, or IGF-1 levels, confirming its metabolic specificity. However, larger phase III trials have not been completed, and long-term safety data remain limited. **Clinical Relevance:** AOD-9604 is investigated as a potential adjunct for weight management, particularly for reducing abdominal adiposity without the systemic risks of hGH therapy. Its lack of mitogenic activity suggests a favorable safety profile for non-growth applications. However, current evidence is insufficient to support routine clinical use, and regulatory approval has not been granted in major markets. Further robust, long-term trials are needed to establish efficacy and safety in diverse populations. For research purposes only — not medical advice.

Key data

Category
Metabolic & Weight
Molecular weight
1815.1 g/mol
Molecular formula
C78H123N23O23S2
CAS number
221231-10-3
Administration
subcutaneous, oral
Research status
clinical trials
References
11
Tags
gh-fragment, fat-loss

Research & studies

Simplifying and expanding the screening for peptides <2 kDa by direct urine injection, liquid chromatography, and ion mobility mass spectrometry
Journal of separation science · 2016 · PubMed

Method allows detection of 18 prohibited peptides including GHRPs and LHRH analogs.; Limits of detection range from 50 to 500 pg/mL, meeting the 2 ng/mL minimum requirement.; Method shows imprecision <20% and linearity from 0 to 10 ng/mL.; Stability testing indicates -20°C as appropriate storage for urine samples.

Detecting peptidic drugs, drug candidates and analogs in sports doping: current status and future directions
Expert review of proteomics · 2014 · PubMed

Detection methods cover low, intermediate, and high molecular mass peptidic compounds.; Common biological specimens include blood, serum, and urine.; A gap remains between advanced detection techniques and daily analytical implementation.

AOD-9604 does not influence the WADA hGH isoform immunoassay
Drug testing and analysis · 2013 · PubMed
Gateways to clinical trials
Methods and findings in experimental and clinical pharmacology · 2005 · PubMed

Data sourced from the Clinical Trials Knowledge Area of Prous Science Integrity.; Focus on a specific selection of drugs including ABX-IL-8, adalimumab, and others.; Covers trials from current literature and congresses.

Gateways to clinical trials
Methods and findings in experimental and clinical pharmacology · 2003 · PubMed

Data retrieved from the Clinical Studies Knowledge Area of Prous Science Integrity.; Focuses on a selection of drugs including Abarelix, Bevacizumab, and others.; Provides a guide to the most recent clinical trials.

Gateways to clinical trials
Methods and findings in experimental and clinical pharmacology · 2003 · PubMed

Data retrieved from Clinical Studies Knowledge Area of Prous Science Integrity.; Issue covers a wide selection of drugs from Abetimus sodium to ZYC-00101.; Guide serves as a gateway to most recent clinical trials.

Frequently asked questions

What is AOD-9604?

**Mechanism of Action:** AOD-9604 is a synthetic modified peptide corresponding to amino acids 177–191 of the C-terminal region of human growth hormone (hGH). Unlike full-length hGH, it selectively stimulates lipolysis by activating hormone-sensitive lipase in adipose tissue via a cAMP-dependent pathway, without bindin

How does AOD-9604 work?

Modified C-terminal hGH fragment designed to stimulate lipolysis without growth-promoting or glycemic effects.

What is the research status of AOD-9604?

AOD-9604 is currently classified as clinical trials, with 11 research references on record. This is for research purposes only and is not medical advice.

What is the molecular weight of AOD-9604?

AOD-9604 has a molecular weight of approximately 1815.1 g/mol (formula C78H123N23O23S2).

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