Independent · non-commercial · publishes on a quarterly cycle|Current cycle 2026 Q3
Compound Evidence InstituteEvidence synthesis · established 2023Graded assessments of compounds, trials, methods and supply
Document set current to 30 July 2026
Compound monograph · Growth-hormone axis

AOD-9604 — compound monograph

Growth-hormone C-terminal fragment analogue. Unapproved, research supply. The Institute assesses 2 outcomes for this compound and grades the strongest at very low certainty.

Document identifier
CEI-MN-028
Series
Compound monograph
Version
1.0
Published
17 Sep 2025
Last reviewed
17 Sep 2025
Next review
17 Sep 2027
Identifier
10.71829/cei.mono.28
Certainty
Very low
Cycle
2025 Q3

§1Identification and status

§1.1Nomenclature

Preferred name
AOD-9604
Compound class
Growth-hormone C-terminal fragment analogue
Assessment series
Growth-hormone axis
Synonyms and codes
AOD9604 · hGH fragment 176-191 (Tyr-modified) · Tyr-hGH(177-191)
Route as evaluated
Oral in the clinical programme; subcutaneous in research contexts

§1.2Chemistry

Chemical identifiers are reproduced where they are public. Where a structure has not been published the monograph records not disclosed rather than constructing one.[1]

CAS registry number
221231-10-3
Molecular formula
C78H125N23O23S2
Average mass
1815.09
Monoisotopic mass
1813.88
ATC classification
not assigned

§1.3Sequence and structural notes

H-Tyr-Leu-Arg-Ile-Val-Gln-Cys-Arg-Ser-Val-Glu-Gly-Ser-Cys-Gly-Phe-OH

A 16-residue analogue of the C-terminal region of human growth hormone, residues 177 to 191, with an additional N-terminal tyrosine. An intramolecular disulfide bridge links the two cysteine residues. The therapeutic hypothesis was that the lipolytic activity of growth hormone resides in this fragment and can be separated from its growth-promoting and diabetogenic activity.

§1.4Assessment status

The Institute assesses AOD-9604 across 2 indications and grades the strongest of them at very low certainty. Supplied as a research chemical; no marketing authorisation for the uses under which it is supplied.

Distribution of certainty ratingsShare of assessed outcomes at each certainty level.2assessed outcomes
HighModerateLowVery low
Figure 1. Distribution of certainty ratings across the 2 outcomes the Institute assesses for AOD-9604. A rating attaches to a specific population, comparator and outcome and does not transfer between them.

Table 1. Assessed outcomes for AOD-9604, ordered by certainty. Each row links to the per-indication evidence extract.

IndicationEffect as recordedCertaintyTrials
Obesity and overweight in adultsA 12-week phase 2b trial in 300 participants did not demonstrate a statistically significant difference in body weight versus placebo at any doseModerate1
Knee osteoarthritis with obesityA small trial in knee osteoarthritis reported no significant benefit on the primary endpointLow1
Effects are reproduced as the contributing trials reported them. Where a confidence interval is held it appears on the per-indication extract rather than in this summary table.

References cited on this page

References are numbered in order of first citation in this document. Each superscript in the text links to its entry below.

  1. International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use. ICH Q6B Specifications: Test Procedures and Acceptance Criteria for Biotechnological/Biological Products. ICH Harmonised Tripartite Guideline 1999;Step 4 version. identifier not held by the Institute

Identifiers are reproduced only where the Institute holds them. Where a digital object identifier or PubMed identifier is not shown, the Institute has recorded the journal and year and has not constructed an identifier.

Nothing published by the Institute is medical advice, a diagnosis, a prescription, a treatment recommendation or a purchasing recommendation. Compounds supplied for research use are not approved for human or veterinary use in any jurisdiction, and a favourable analytical assessment of a supplier is not a statement that any product is safe or effective. The Institute publishes certainty ratings and never recommendations. No telephone number, messaging handle or ordering channel appears anywhere on this site.