Since the β-cells’ major product is insulin, type I diabetes is the disorder given by NC := ’β-cell ‘, NH := ’insulin ‘, DirHF := ’hypo’ and FCB := ‘secretion’ diagnosed as OCH = ‘β-cell insulin hyposecretion’ using OCF := NCNHDirHFFCB. The gene discussed is INS; the disease is type 1 diabetes mellitus.