Three SLCOs that demonstrated a unique expression pattern in healthy tissues (liver, testis and brain) were also detected in a small number of ovarian cancer samples: “liver-specific” SLCO1B1 in 1.5%, “testis-specific” SLCO6A1 in 14.1% and SLCO1C1, which codes for the “brain thyroid transporter,” in 3% of samples. This evidence concerns the gene SLCO6A1 and ovarian cancer.