A research team in South Korea led by Myung-Jin Park from the Korea Institute of Radiological and Medical Sciences in Seoul and Yangsik Jeong from Yonsei University in Wonju showed that the gene encoding a nuclear receptor protein called PPARγ is exclusively expressed in glioblastoma stem cells taken from patients with the aggressive “mesenchymal” subtype of the disease, but not in stem cells from other glioblastomas with more favorable outcomes. The gene discussed is PPARG; the disease is glioblastoma.