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| Name | Class |
|---|---|
| Peking Union Medical College Hospital | OTHER |
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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Pregnant women with history of recurrent miscarriage |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| No intervention | Other | This is an observational study without any intervention |
|
| Measure | Description | Time Frame |
|---|---|---|
| Number of participants with miscarriage | pregnancy outcomes are confirmed by electronic hospital records or self-reported by participants | 6-13(+6) weeks of gestation |
| Gestation week at miscarriage | pregnancy outcomes are confirmed by electronic hospital records or self-reported by participants | 6-13(+6) weeks of gestation |
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Inclusion Criteria:
Exclusion Criteria:
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Pregnant women with history of recurrent miscarriage
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Hongjun Shi, PhD | Contact | 86-0571-85271192 | shihongjun@westlake.edu.cn | |
| Danyang WANG, MPH | Contact | wangdanyang@westlake.edu.cn |
| Name | Affiliation | Role |
|---|---|---|
| Hongjun Shi, PhD | Westlake University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences | Recruiting | Beijing | Beijing Municipality | 100730 | China |
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| ID | Term |
|---|---|
| D000026 | Abortion, Habitual |
| ID | Term |
|---|---|
| D000022 | Abortion, Spontaneous |
| D011248 | Pregnancy Complications |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
| D000091642 | Urogenital Diseases |
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Maternal blood during pregnancy