Lack of a Y-Chromosomal Complement in the Majority of Gestational Trophoblastic Neoplasms

Table 3

Summary of percentage of tumor cases positive for a Y allele for at least one marker.

	Choriocarcinoma	ETT	PSTT
Total case no.	19	17	15
With Y peaks	1	3	1
% with Y peaks	5.3%	17.6%	6.7%
CI (95%)	15.4%–0%	35.7%–0%	19.4%–0%

ETT: epithelioid trophoblastic tumor; PSTT: placental site trophoblastic tumor; CI: confidence interval.