This prospective cohort study primarily aims to examine the association between blood niacin levels and recurrent miscarriage.
Recurrent miscarriage is affecting around 5% women at reproductive age. And the underlying causes remain undetermined in 50%-70% of cases. Although animal models and linkage analysis according to family studies have identified that niacin deficiency can lead to congenital malformations and recurrent miscarriage. Evidence based on population is lacking with regard to the effect of blood niacin levels on recurrent miscarriage. We intend to enroll 499 pregnant women confirmed by a positive blood human chorionic gonadotropin test and with history of unexplained recurrent miscarriage. By testing their blood niacin levels and following up to the end of first-trimester pregnancy, this study aims to examine the role of niacin levels in preventing miscarriages among women with history of recurrent miscarriage.
Study Type
OBSERVATIONAL
Enrollment
499
This is an observational study without any intervention
Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences
Beijing, Beijing Municipality, China
RECRUITINGNumber of participants with miscarriage
pregnancy outcomes are confirmed by electronic hospital records or self-reported by participants
Time frame: 6-13(+6) weeks of gestation
Gestation week at miscarriage
pregnancy outcomes are confirmed by electronic hospital records or self-reported by participants
Time frame: 6-13(+6) weeks of gestation
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