Gabrielle Sonigo et al. [21] evaluated HAVCR2 mutations in 53 of 70 SPTCL patients from 19 medical centers in France from 2000 to 2019 and found that HAVCR2 mutations were present in 25% of patients, which is a figure much lower than the 85% reported in Asia. The gene discussed is HAVCR2; the disease is subcutaneous panniculitis-like T-cell lymphoma.