Summary
Expressed polymorphisms in the genes encoding components of the fibrinolytic cascade
could have implications for the predisposition to thrombolytic disorders and/or for
tumor metastasis. The occurrence of published two amino acid sequences at position
194 of the human urokinase-type plasminogen activator prompted us to search by SSCP
for frequent polymorphisms in several exons of the gene. Surprisingly, only one sequence
was detected in codon 194 (>200 alleles). Two polymorphisms were observed in this
study: the most frequent one, a C to T change near the beginning of exon 8, is probably
silent; a less frequent polymorphism results in the replacement of a Leu residue by
a Pro, in the kringle domain.