Consistent with our findings, Modi et al., despite not finding statistical significance in grade III-IV acute GvHD at day 100 in PTCy and thymoglobulin group (12% vs. 19.6%, p = 0.38), observed that PTCy was associated with a lower incidence of acute GvHD compared to thyroglobulin (hazard ratio [HR] = 2.63, p = 0.01). The gene discussed is TG; the disease is graft versus host disease.