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Peri-mortem evaluation of infants who die without a diagnosis: focus on advances in genomic technology
Monica H Wojcik1,2,3, Dara Brodsky4, Jane E Stewart4
1Division of Newborn Medicine, Department of Medicine, Boston Children's Hospital, Boston, MA, USA. monica.wojcik@childrens.harvard.edu.
Insights
Diagnosing unexplained infant deaths is challenging. This review synthesizes a diagnostic approach, emphasizing how new genomic sequencing technologies can aid in identifying genetic causes for neonatal and infantile demise.
Area of Science:
- Genetics
- Neonatal Medicine
- Pediatric Pathology
Background:
- Many infant deaths lack a confirmed diagnosis, with potential genetic or non-genetic causes.
- Clinical decisions for investigations in dying or deceased infants are often uncertain for healthcare providers.
- Peri-mortem studies are crucial for diagnosing unexplained infant deaths.
Purpose of the Study:
- To review the current literature on evaluating unexplained neonatal and infantile deaths.
- To synthesize a diagnostic approach for these cases.
- To highlight the role of emerging genomic technologies in diagnosis.
Main Methods:
- Literature review of diagnostic evaluations for unexplained infant demise.
- Synthesis of a diagnostic strategy incorporating peri-mortem studies.
- Focus on the application of advanced genomic sequencing.
Main Results:
- Genetic disorders are a significant cause of infant mortality, often undiagnosed.
- Genomic sequencing offers advanced diagnostic capabilities for unexplained deaths.
- Interpretation of genomic findings requires detailed clinical and peri-mortem data.
Conclusions:
- A structured diagnostic approach is essential for unexplained infant deaths.
- Genomic technologies are increasingly vital for identifying genetic causes.
- Integrating clinical, peri-mortem, and genomic data improves diagnostic yield.
Abstract:
Infants who die within the first weeks to months of life may have genetic disorders, though many die without a confirmed diagnosis. Non-genetic conditions may also be responsible for unexplained infant deaths, and the diagnosis may be reliant upon studies performed in the peri-mortem period. Neonatologists, obstetricians, or pediatricians caring for these children and their families may be unsure of which investigations can and should be performed in the setting of a newborn or infant who is dying or has died. Recent advances in genomic sequencing technology may provide additional diagnostic options, though the interpretation of genetic variants discovered by this technique may be contingent upon clinical phenotype information that is obtained peri-mortem or upon autopsy. We have reviewed the current literature concerning the evaluation of an unexplained neonatal or infantile demise and synthesized a diagnostic approach, with a focus on the contribution of new and emerging genomic technologies.
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