Not to worry, this is already on their radar:
"Keiko: Thank you. Question 8: Certain individuals with advanced androgenetic alopecia experience significant miniaturization of follicles and extensive loss on the sides and back of the head. This is the typical location for donor follicles for transplants and with your therapy. As a result, these donor follicles may be extensively affected by Androgenetic Alopecia prior to the procedure. What can these people expect from your therapy?
Mr. Toyoshima: This question rather relates to the Androgenetic Alopecia clinical condition; therefore, I believe it would be more appropriate for a physician to talk about this. However, I can provide you with an answer from a biologist perspective. It is thought that the site of Androgenetic Alopecia onset is already determined in the stage wherein the follicular organ is generated, and follicular papilla cells store information such as destiny, determining the site of male pattern alopecia onset, to a certain degree. Consequently, follicles on the back of the head and those on the front of the head will have different destinies, and it is thought that patients with alopecia develop the disease in a specific site in this manner. As the disease gradually progresses, follicles on the back of the head and also those on the side of the head also become miniaturized. However, even though the disease has progressed into those areas, there is still a large number of normal follicles left. Based on this, we are currently conducting a human-tissue study using dermal tissues collected from the back of Androgenetic Alopecia patients’ heads in order to verify the possible number of normal follicles which can be collected from such areas, and whether cells collected from such areas have the function needed for follicular regeneration, etc. So far, we have found out that there is a large number of normal follicles on the back of Androgenetic Alopecia patients. We believe that collecting the cells from such areas will definitely result in regeneration of normal follicles."