The survival analysis result suggested high-expression DOCK4 gene as a potential poor prognosis biomarker among sarcoma (SARC), stomach adenocarcinoma (STAD), and uterine corpus endometrial carcinoma (UCEC) (Figures 3(a)–3(c)), while low-expression DOCK4 gene as a potential poor prognosis biomarker among kidney renal clear cell carcinoma (KIRC) and head and neck squamous cell carcinoma (HNSC) (Figures 3(d) and 3(e)). The gene discussed is DOCK4; the disease is head and neck squamous cell carcinoma.