Amplifica's AMP-303 phase one trial results came out: ''A statistically significant percentage of study subjects showed a greater than 15% increase in non-vellus hair count from baseline compared to placebo at 60 days post-treatment, and a greater than 10% increase compared to placebo at 150 days post-treatment.'' https://amplificabio.com/amplificas-amp-303-study-unveils-new-hope-for-hair-loss-treatments/
Moreover, there were no major safety issues from the intradermal injections, and just a single AMP-303 treatment cycle increased non-vellus hair count. In addition, the increase in hair density and thickness was sustained over time (150 days post treatment). Best of all, the results demonstrated AMP-303's ability to transition vellus hairs into non-vellus hairs. This implies not just hair thickening, but also the far more difficult hair loss reversal.
The male subjects (all aged 18-45) with mild to moderate androgenetic alopecia (Norwood III-IV) were divided into two groups:
Group 1 (n=32): balding duration of 3-5 years.
Group 2 (n=29): balding duration of ≥10 years.
They all received AMP-303 injections on one side of the scalp in twenty frontotemporal locations, and saline injections on the other side. For the Group 1 responders, the mean increase in non-vellus hair count was 14.5% and it peaked at sixty days. The results remained significantly greater than saline through five months. AMP-303 showed durability of effect with one injection cycle and led to hair terminalisation. Unfortunately, nothing is said about the Group 2 responders who had been balding for ten years or longer.