A non-hormonal, reversible and non-toxic male birth control could be a step closer, with scientists successfully targeting a protein that's crucial in making fertile sperm. Knocking this protein out for a period of time would give men control over their protection window, much like oral…
I can’t find much on the mechanism of action (serine/threonine kinase antagonism), other than it’s been tried to fight cancer and failed, hopefully it doesn’t have any terrible side effects.
It sounds safer than the retinoic acid antagonist one that was posted a while ago anyway, I can’t imagine a drug that does the opposite of tretinoin will be popular.