TMPRSS2 and prostate adenocarcinoma: TMPRSS2 is highly expressed in normal tissues including the small intestine, prostate, pancreas, salivary gland, colon, stomach, seminal vesicle and lung, and is increased in PRAD tissues, indicating that SARS‐CoV‐2 might attack not only the lungs and other normal organs, but also in PRAD cancer tissues.