Table 1.

Different manifestations of congenital protein C deficiency

Zygosity	Frequency
Type I heterozygous	76%
Type II heterozygous	12%
Type I homozygous	5%
Type II homozygous	0.6%
Type I mixed heterozygous	3%
Type II mixed heterozygous	0.6%
Type I/II mixed heterozygous	1.5%
Unknown	1.3%

Note: Analysis of 320 patients.