A genome-wide scan in type 2 diabetes mellitus provides independent replication of a susceptibility locus on 18p11 and suggests the existence of novel Loci on 2q12 and 19q13.

A genome-wide scan was performed, using nonparametric linkage analyses, to find susceptibility loci for type 2 diabetes mellitus in the Dutch population. We studied 178 families from The Netherlands, who constituted 312 affected sibling pairs. The first stage of the genome scan consisted of 270 DNA markers, with an average intermarker spacing of 13 cM.

Assignment of the AK1:Np:ABO linkage group to human chromosome 9.

In man-Chinese hamster somatic cell hybrids the segregation patterns of the loci for 25 human enzyme markers and human chromosomes were studied. The results provide evidence for the localization of the gene for adenylate kinase-1 (AK1) on chromosome 9. Since the loci for the ABO blood group (ABO), nail-patella syndrome (Np), and AK1 are known to be linked in man, the ABO:Np:AK1 linkage group may be assigned to chromosome 9.