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Transcobalamin II (TCN2 67A>G and TCN2 776C>G) and Transcobalamin II Receptor (TCblR 1104C>T) Polymorphisms in Korean Patients with Idiopathic Recurrent Spontaneous Abortion

The transcobalamin II (TCN2) 776C>G polymorphism has been reported to be a genetic risk factor for idiopathic recurrent spontaneous abortion (RSA). However, the sample size in previous studies was small, and other TCN2 polymorphisms have not been studied. Moreover, the TCN2 67A>G and 776C>G polymorphisms, and the transcobalamin II receptor (TCblR/CD320) 1104C>T polymorphism, have demonstrated associations with immune responses.