In another study employing scRNA‐Seq, a single patient seminoma sample was shown to contain with two transcriptionally distinct tumour subtypes; one expressed the WNT signalling transcription factor TCF7L1 (encodes T cell factor 7 like 1; WNT signalling mediator), and the second expressed SCG3 and SV2C.63 The gene discussed is SCG3; the disease is seminoma.