X-chromosome Inactivation Patterns in Korean Women with Idiopathic Recurrent Spontaneous Abortion

ABSTRACT

Recurrent spontaneous abortion (RSA) defines as two or more consecutive losses at or =90%) and 4 (8.9%) had mild skewed inactivation (> or =85%). In 54 heterozygous control subjects, 5 (9.3%) women showed extreme skewed X inactivation and 7 (13.0%) had mild one. The frequency of skewed X inactivation between RSA patients and control group was not significantly different (p>0.05). This finding suggests that skewed x romosome be not associated with unexplained RSA patients.