TERC and neoplasm: The abundance of TERC, the telomerase RNA component, was negatively correlated with tumour TL (ρ = − 0.24; P = 4.55 × 10−3; Supplementary Fig. 4a) but there was no correlation with TL ratio or GR count (ρ = 0.12; P = 0.15; Supplementary Fig. 4b).