I found this interesting: "Hyperthermia in Combination with Emerging Targeted and Immunotherapies as a New Approach in Cancer Treatment".
They also mention that it is effective with chemo and RT.
This is work being done by a company in Belgium that is a spinoff from the Antwerp University Hospital. Currently they are doing phase 1 studies for pancreatic and other solid tumours.
elmedix.com/en/patient/#the....
Link for solid tumours at the bottom right.
Disclosure: the lead author is the niece of a good friend π.
p.s. I don't think hot-flashes count as "hyperthermia" π