What Do the Studies Say About AOD-9604?
Each answer says whether the result came from people, animals, or cells.
How did AOD-9604 change fat cells?
AOD-9604 touched the outer wall of fat cells and slowed a helper used to make new fat [4]. In obese mice, it also increased a beta-3 switch that helps burn stored fat [1]. It avoided the usual doorway used by full growth hormone and left IGF-1, a growth-related blood number, unchanged [3], yet people did not lose more weight [5].
Why doesn't AOD9604 act like the whole hormone?
AOD9604 is one end part of growth hormone, not the whole hormone, and it lacks the part that uses the hormone's usual cell doorway. Instead, it starts a message at the fat-cell wall that slows a fat-making helper [4]. It also leaves IGF-1, a growth-related blood number, unchanged [3].
Did AOD9604 need the beta-3 fat-cell switch?
For the lasting mouse result, yes: longer use of AOD9604 increased a beta-3 switch that helps fat cells burn stored fat. Mice without that working switch did not keep the weight change [1]. Their brief rise in energy use remained, but the study did not find its cause.
Where did AOD9604 show an effect?
In lab dishes, AOD9604 slowed a helper that fat cells use to make new fat [4]. In obese mice, it increased a beta-3 switch that helps burn stored fat [1]. It avoided the usual doorway for full growth hormone and left IGF-1, a growth blood number, unchanged [3], but the weight effect was not proven in people [5].
What kind of compound is AOD-9604?
AOD-9604 has a 16-amino-acid chain, meaning sixteen protein building blocks, and it copies growth hormone parts 177–191 with one block added at the front [3]. Researchers tested it as an obesity pill that would not raise IGF-1, a growth-related blood number. The compound remains under study because its main weight-loss test missed the goal [14].
Did AOD-9604 help people lose weight?
The human tests did not show that the drug worked. About 900 adults with obesity joined roughly six trials using pills from 0.25 mg to 54 mg each day. In the main trial, people on placebo lost just as much weight, so the work ended [5][14]. Animals lost fat [1], but that result did not carry over to people.
Has the FDA approved AOD-9604?
No; the FDA has not approved AOD-9604 for any use. Metabolic Pharmaceuticals ended its obesity work when the main test missed its goal [14]. The FDA records a withdrawn nomination to consider AOD-9604 for compounding, with safety concerns still noted. Withdrawal gives no permission to compound it.
How much is known about AOD-9604 safety?
Short studies found few clear safety problems, and about 900 adults with obesity had much the same problems with the compound and placebo [5]. Animal work found no clear chromosome harm or signs of poisoning [6]. Because human tests went only about 24 weeks, safety over many years remains unknown [14].
Does AOD9604 raise IGF-1, the growth blood number?
No; AOD9604 does not raise IGF-1, a growth-related blood number, because it avoids the usual hormone doorway [3]. Full growth hormone does raise IGF-1 and sends growth messages throughout the body. Long pill work with rats and monkeys showed no broad harm of that kind with the compound [6]. Animal safety still can't settle long-term safety for you.
Why did the AOD-9604 obesity work end?
The compound did not do its main job, though about 900 adults with obesity joined roughly six trials. In the main study, the placebo group lost just as much weight [5]. Metabolic Pharmaceuticals ended the obesity work around 2007, although the short safety record looked calm [14].
How long did AOD9604 remain whole in blood?
In a pig study, the compound stayed whole for about 3 minutes after a vein shot [6]. The body then removed its protein parts one at a time. That brief stay helped move the human obesity work toward tablets, and other work showed that the body could take in a tablet [6].
Did AOD9604 change blood sugar or insulin?
AOD9604 was made to avoid blood-sugar harm linked to full growth hormone, and it leaves IGF-1, a growth-related blood number, unchanged [3]. An early study found changes in how sugar entered rat fat cells [8]. Later animal work found no clear problem [6], but no human study has proved a blood-sugar benefit.
Which side effects came up with AOD9604?
In human trials, reported problems were about the same as with placebo [5], while animal work found no clear chromosome harm or signs of poisoning [6]. Users most often mention mild redness where a shot entered the skin, but their reports can't prove the cause. Human safety past about 24 weeks remains unknown [14].
Is AOD9604 a steroid or a hormone?
No; AOD9604 is a peptide, meaning a short chain of protein parts. It is a 16-amino-acid piece, meaning sixteen protein building blocks copied from growth hormone [3]. In lab work, it slowed fat-making and increased a beta-3 switch that helps burn fat [1][4], but it is not a steroid.
What did the main AOD9604 trial find?
In the main later study, the placebo group lost just as much weight. It was part of roughly six trials with about 900 adults who had obesity. Daily pill amounts ranged from 0.25 mg to 54 mg [5], and Metabolic Pharmaceuticals ended the obesity work around 2007 after that result [14].
How much weight did people lose with AOD9604?
Human studies do not support a set amount of weight loss. About 900 adults with obesity joined roughly six trials, and the main study gave the drug no edge over placebo [5]; the program then ended [14]. People trying the compound for their own research also report little fat loss. Those accounts were not checked in a study with a comparison group.
Did AOD9604 help knee cartilage or arthritis?
The hopeful result comes only from animals and cells, after researchers gave 32 rabbits arthritis in one knee. Each week, they put 0.25 mg AOD-9604 into the sore knee. After 4–7 weeks, treated knees had less cartilage damage than knees given salt water [7].
Did AOD9604 protect muscle during weight loss?
There is no human proof that the compound protects muscle, and most users report no change in muscle, strength, or recovery. Those accounts are not trial proof. AOD-9604 avoids the cell doorway used for the wider effects of growth hormone [3], so a muscle effect was not expected. Human studies checked weight and safety, not how much was fat or muscle, and found no clear weight loss [5].
Did people in AOD-9604 studies get shots?
The human obesity studies used tablets, not shots, after earlier work showed that the body could take AOD-9604 in from a pill. In a pig study, the whole compound lasted about 3 minutes after a vein shot [6]. Other shots described in the papers were given to animals.