Clinical Research Directory

Inclusion Criteria: * Postnatal age less than 100 days; * Perinatal death after 20 weeks of gestation (more than 500 g) * Can be retained biological samples for genetic screening; * Biological parent or guardian's informed consent. Exclusion Criteria: * Reluctance of parents to use genetic sequencing data for subsequent research; * Parents under 18 years of age or incapacitated for decision-making; * subjects older than 100 days; * Perinatal death less than 20 weeks of gestation or weight less than 500 g; * Inherited metabolic diseases with chromosomal abnormalities; * Multiple pregnancies; * Lack of access to biological samples from which DNA can be extracted; * Failure to sign informed consent.