Dihexa mastery course
Unit 3 of 10

The HGF/c-Met hypothesis

Dihexa's headline mechanism is that it potentiates hepatocyte growth factor signaling at the c-Met receptor, driving…

The proposed mechanism, and why it is a hypothesis

Dihexa's headline mechanism is that it potentiates hepatocyte growth factor signaling at the c-Met receptor, driving the growth of new synapses. It is a genuinely interesting idea, and its defining paper was retracted in 2025.

This unit separates the well-established background biology of HGF and c-Met from the specific, and now shakier, claim that dihexa harnesses it. It also revisits the older AT4 receptor framework: the same laboratory described the receptor, and another group later identified it as the enzyme IRAP.

Key terms

The background biology (well established)


The dihexa hypothesis


Where dihexa is proposed to act


The older AT4/IRAP framework


How solid is the mechanism?