Clustered point mutations and small deletions or insertions within DNA
are amenable to rapid analysis using induced heteroduplex formation.
A single synthetic molecule (universal heteroduplex generator, UHG) ma
y detect any of a series of such mutations following amplification by
the polymerase chain reaction. This paper illustrates the use of UHG-b
ased DNA heteroduplex analysis by describing the construction, propert
ies, and methods of use of five UHGs, designed for genetic screening a
nd testing of the inherited metabolic diseases: phenylketonuria, sickl
e-cell disease, cystic fibrosis, von Willebrand's disease type 2B, and
mamman-binding lectin deficiency. In all cases, identification of mul
tiple disease-associated genotypes is possible using a single UHG.