PTCRA and viral infectious disease: Cluster 7 exhibited as top DEGs PTCRA forming the pre-T-cell receptor complex that regulates early T-cell development, LILRA4 involved in limiting the innate immune responses to viral infections, and IL3RA, whose protein serves as a cell surface receptor for IL3 expressed on various immune cells, overseeing the production and differentiation of hematopoietic progenitor cells into lineage-restricted cells.