In 2021, I wrote a post on microRNA (miRNA) and hair growth. In there, I also discussed a new company working on messenger RNA (mRNA) based hair regeneration. And now we have RNA interference (RNAi) as a hair loss treatment, thanks to OliX Pharmaceuticals (South Korea) and its small interfering RNA (siRNA) based product.
Also not to forget, most recently, we have become excited by CosmeRNA, a SAMiRNA based hair loss treatment that targets the androgen receptor. SAMiRNA is a new type of siRNA nanoparticle that does not result in innate immune stimulation. The number of different acronyms containing “RNA” that are being developed for hair loss treatments is mind boggling.
Update: March 10, 2023
Olix Pharmaceuticals Clinical Trials
OliX just got approval from Australia’s Human Research Ethics Committees (HREC) to begin a phase 1 clinical trial of OLX72021. This candidate “inhibits the activity of hormones that cause male hair loss”. The effect lasted for more than three weeks in animal tests.
Update: In a March 23 article on this same development, CEO Dong Ki Lee states the following:
“We are also planning to launch hair loss cosmeceuticals in due time for the safety of OLX72021 to be confirmed in this clinical trial.”
So far, we have only heard about Olix’s RNAi based candidate for the treatment of male pattern hair called OLX104C. It reduces the expression of the androgen receptor via small interfering RNA (siRNA). Neither of these products is as yet listed on the company’s pipeline page. Perhaps the new product is just the old one renamed. I will update this post when I find out.
Asymmetric siRNA Targeting of the Androgen Receptors
On November 22, 2022, OliX published preclinical research on its androgenetic alopecia treatment program, OLX104C. The results are very encouraging. Actual study is here and the researchers demonstrated:
“Efficacy of androgen receptor (AR) reduction, hair loss inhibition, and long duration of action in primary cultured human follicle dermal papilla cells (HFDPC) and rodent models of hair loss.”
They call this technology “cp-asiRNA targeting AR” and “AR-targeting asiRNA (cp-asiAR)”. The asiRNA stands for asymmetric small interfering RNA.
In May 2022, OliX raised $45 million and announce that its androgenetic alopecia product (OLX104C) will enter clinical trials later this year. Moreover, in August 2021, OliX obtained a Notice of Allowance from the US Patent and Trademark Office for OLX104C.
In June 2021, OliX signed an agreement with LGC Biosearch Technologies to accelerate production of asymmetric siRNA for the treatment of androgenic alopecia. Olix CEO Dong-ki Lee also presented at SMi’s 12th Annual RNA Therapeutics virtual conference.
OliX Pharma’s RNAi Hair Loss Product OLX104C
OliX Pharmaceuticals (South Korea) just made a major announcement. Their RNAi based hair loss product OLX104C successfully grew back hair in mice following just one single injection. The mice were suffering from androgenetic alopecia due to them being given excess dihydrotestosterone (DHT).
“We are advancing a novel and potentially durable approach to treating hair loss” — CEO Dong Ki Lee
In this preclinical study, OLX104C was administered topically to a mouse model via an injection. The before and after photos are amazing. Interestingly, they compare the results to the anti-androgen Flutamide.
More importantly, OliX is the real deal. Their news page is very impressive with regular significant developments. This includes raising $37.2 million in December 2020. They also received US FDA Phase 2a approval in November, 2020 to treat hypertrophic scars.
siRNA
On OliX’s pipeline page, they state that small interfering RNA (siRNA) has limitations in terms of stability, delivery and toxicity. This is not a problem with RNAi therapeutics. Edit: Per the patent, they are using asymmetric siRNA to inhibit male pattern hair loss gene expression.
Hundreds of millions of people around the world took mRNA vaccines during the past few years. Even thought they did not go through rigorous clinical trials for five plus years. In effect, this will speed up scientific progress. Many people will no longer worry about long-term side effects for newer such RNA related drug candidates. Perhaps a mistake, but I will not complain too much if it speeds up the realization of a hair loss cure.