Other radical Major Depression treatments...microbiome & fecal transplant?

Hi all!
We have been exploring Ketamine therapy for MDD which has sadly proved ineffective. Looking for hope elsewhere, we are looking into microbiome stuff, and the possible help of fecal transplant. The research here is even younger than in Ketamine therapy, it seems. So again I am looking for any anecdotal experiences anyone can share in treating depression with fecal transplant! There are some fascinating youtube/TED videos about the subject, and at least one anecdote I saw of a woman with Bipolar Disorder effectively treating suicidality with enemas of her partner’s poop :slight_smile:
Thank you in advance for your thoughts!