A study by Michael Frass et al, published in 2020, claimed that homeopathy is effective for lung cancer.
Homeopathic Treatment as an Add-On Therapy May Improve Quality of Life and Prolong Survival in Patients with Non-Small Cell Lung Cancer: A Prospective, Randomized, Placebo-Controlled, Double-Blind, Three-Arm, Multicenter Study
The study was published in The Oncologist, Volume 25, Issue 12, December 2020.
Author's summary: Criticizing a homeopathy study on lung cancer.