I have just seen on the article of French Wikipedia the quotation of a report of the Swiss League against Cancer which appears to me being a characterized debunking of instinctotherapy. Wikipedia summarizes the conclusions of a certain Dr. Jallut in the following sentence, amidst the introduction of the article:

No clinical studies on instincttherapy exist, the theory of Burger is based on his unverifiable personal experiences [1].

This is included in the body of the article (under criticalities):

A Swiss article of 1989 [15] indicates that there are no clinical studies confirming Burger’s theory, that it results from unverifiable personal experiences and concludes, on the basis of a single case of an undifferentiated trophoblastic teratome, to the absence of proof of its effectiveness against cancer.

Could you explain me why your personal experiences should be unverifiable? Is the conclusion of Jallut really based on only one case of cancer?