Neonatal Alloimmune Thrombocytopenia
Conditions
Keywords
Neonatal Alloimmune Thrombocytopenia, pregnancy, human platelet allogantigen, asian, Chinese
Brief summary
This clinical study aims to investigate the anti-HPA antibodies caused neonatal alloimmune thrombocytopenia in Chinese pregnant women. The survey and data collect will help form an appropriate clinical screening procedure
Interventions
Observational study.
Sponsors
Study design
Eligibility
Inclusion criteria
* 12-28 weeks pregnant Chinese women * between Jan 1, 2017 and Dec 31, 2018
Exclusion criteria
* Not willing to participate in this study * Plan to terminate pregnancy early
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The positive rate of anti-HPA antibody | Up to one and a half years after the study completed |
| The morbidity of NAIT | Up to one and a half years after the study completed |
Secondary
| Measure | Time frame |
|---|---|
| Antigenic specificity of anti-HPA antibodies | Up to one and a half years after the study completed |
| Association of anti-HPA antibody with HLA genotype as assessed by Chi-square test | Up to one and a half years after the study completed |
| The relationship between the titer of anti-HPA antibody and clinical symptom severity in NAIT as assessed by Spearman Correlation assay | Up to one and a half years after the study completed |