Patent ID: 8535880

Claim:
A method of identifying or not identifying an organ- or tissue-specific highly expressed gene, comprising the steps (1) to (4) below; (1) providing 2 or more samples of gene transcripts from each of organs or tissues including fat tissue, urinary bladder, blood, femoral bone, brain, spinal cord, hypophysis, thyroid, gallbladder, bone marrow, adrenal, skin, blood vessels, mammary gland, colon, esophagus, heart, kidney, liver, lung, pancreas, prostate, skeletal muscle, spleen, stomach, testis, thymus, ovary, placenta and uterus, wherein the samples of gene transcripts from each organ or tissue are isolated from different individuals, (2) measuring expression levels of a specified gene group for all of the samples, (3) acquiring, for each gene, (a) a minimum value of expression levels in said 2 or more samples from a particular organ or tissue and (b) a maximum value of expression levels in all said 2 or more samples from the other organs and tissues, (4) identifying the gene as a gene highly expressed specifically in the particular organ or tissue if the above-described (a)/(b) ratio is larger than 1 or not identifying the gene if said (a)/(b) ratio is not larger than 1.