HSPG2 and lymphopenia: The mean PLC before RT commencement was 1.58*109/L (95%CI: 1.55–1.62*109/L) with 15.2% (95%CI: 13.1%–17.6%) CTCAE defined lymphopenia, rendering 12.3%, 2.6%, 0.3%, and 0% for grade 1, 2, 3 and 4 respectively.