HNRNPA1 and lymphoma: In the case with HNRNPA1::MYC fusion, MYC was in the same orientation with HNRNPA1, and placed under the transcription control of HNRNPA1. HNRNPA1 encodes a heterogeneous nuclear ribonucleoprotein that is ubiquitously expressed, and strong MYC protein expression was uniformly seen in lymphoma cells of this case (Fig. 6).