Aims Glial tumours of germ cell origin are relatively rare in men, occurring predominantly after chemotherapy. Many exhibit low‐grade histological features within a spectrum that includes teratomas with mature glial/ganglioglial elements and pure low‐grade tumours with glial/ganglioglial phenotype (LGGT) that resemble gliomas/gangliogliomas of the central nervous system. Because foci of glial differentiation are very often seen in association with embryonic‐type neuroectodermal tumour (ENT), we hypothesise that LGGTs may represent differentiation of embryonic‐type neuroectodermal elements of teratoma and/or ENT. Methods and results To address this hypothesis, we compared LGGTs, ENT, non‐teratomas, and teratomas using microRNA and DNA methylation analyses. Seven LGGTs underwent microRNA‐371~373 analysis and genomic methylation profiling. Evidence of a prior or concurrent germ cell tumour component containing embryonic neuroectoderm (including overt ENT) was present in 4 LGGTs. None of the tested LGGTs were positive for miR‐371a‐3p, with three cases demonstrating low levels of expression within the so‐called “grey zone”. Unsupervised clustering based on microRNA‐371~373 showed two clusters, one comprising non‐teratomas and another including teratomas, ENTs, and LGGTs. Clustering according to top‐differentially methylated probes did not demonstrate a clear separation according to histology. Genome‐wide assessment of mean methylation levels using violin plots demonstrated that LGGT show a methylation profile “intermediate” between ENT and teratoma. Conclusions These results suggest that LGGTs of germ cell origin result from the maturation of ENT components.