Not yet investigated
What we have so far
Together they are the master switch turning a precursor into an adipocyte. It is also the target of the glitazone diabetes drugs, which are well known to build fat.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.