Objective To investigate the expression and prognostic significance of DEAH-box helicase (DHX16) by pan-cancer analysis. Methods The expression and prognostic significance of DHX16 were analyzed using the UALCAN web-portal. Gene ontology and kyoto encyclopedia of genes and genomes analyses of proteins interacting with DHX16 were performed using DAVID 6.8 functional annotation software. Results DHX16 was highly expressed in bladder urothelial carcinoma, head and neck squamous cell carcinoma, esophageal carcinoma, liver hepatocellular carcinoma, and cholangiocarcinoma (all P ＜ 0.001). Proteins interacting with DHX16 were located mainly in catalytic step 2 spliceosome, nucleoplasm, and cell membrane, and participated in mRNA splicing and processing, binding to poly (A) RNA and nucleic acids, and RNA helicase activity. Spliceosome, mRNA surveillance, RNA degradation, and transport pathways were implicated. Conclusion The high expression of DHX16 is helpful for the prognosis of bladder urothelial carcinoma prognosis, and unfavorable for prognoses of adrenocortical carcinoma, sarcoma, brain lower grade glioma, liver hepatocellular carcinoma, and acute myeloid leukemia. Thus, DHX16 may have value as a prognostic marker.

【Objective】 To explore the correlation between body mass index (BMI) and lipid indexes with prostate volume in patients with benign prostatic hyperplasia (BPH) so as to provide reference for the clinical prevention of this disease. 【Methods】 Clinical data of 578 patients admitted to the Department of Urology of Chinese PLA General Hospital during Jan.2014 and Dec.2022 were collected.The patients underwent initial prostate puncture biopsy or prostatectomy and BPH was confirmed pathologically.The patients’ age, time of onset of the disease, BMI, past medical history and biochemical indexes were analyzed.According to the total prostate volume (TPV) grading, the patients were divided into TPV>75 mL and TPV≤75 mL groups.The general data of the two groups were compared, and predictors of TPV were determined with linear regression analysis.The samples were stratified with BMI to observe the differences in the effects of apolipoprotein B (ApoB) on TPV. 【Results】 There were 215 cases in the TPV>75 mL group and 363 cases in the TPV≤75 mL group.The levels of BMI, triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and apolipoprotein B (ApoB) were higher in the TPV>75 mL group (P<0.01).Multivariate linear regression analysis showed that age (β=0.604, P=0.003), BMI (β=2.000, P<0.001), ApoB (β=23.792, P<0.001) and TPV had a significant positive linear correlation; after adjusting for the confounders of age and BMI, ApoB was not linearly correlated with TPV in BPH population with BMI<24 (P>0.05), and ApoB predicted prostate volume growth in overweight and obese BPH population respectively (β=26.411, P=0.011; β=47.602, P=0.017). 【Conclusion】 Age, ApoB and BMI can be used as predictors of volume growth in BPH patients, which can help further research on the pathogenesis and progression of BPH.