Kinins, peptide products of kininogens, may be involved in hypertensive and diabetic diseases, and inflammatory disorders. The human kininogen gene (KNG) has been mapped to chromosome 3, using a panel of human-hamster somatic cell hybrids by polymerase chain reaction of hybrid DNA with gene-specific primers. KNG was further assigned to 3q26-3qter, using DNA from a second panel of chromosome 3 deletion mapping cell hybrids.