Personalized genomic medicine: lessons from the exome

Area of Science:

• Genomics
• Medical Genetics
• Pediatric Cardiology

Background:

• Genomic sequencing is crucial for identifying genetic factors in human diseases.
• Incidental findings from sequencing can offer significant scientific and clinical value.
• VACTERL association is a complex congenital condition with various potential complications.

Observation:

• Whole-exome sequencing was performed on a neonate with VACTERL association and severe post-surgical pulmonary hypertension.
• A heterozygous mutation in the CPS1 gene was identified as a potential novel genetic risk factor.
• Newborn screening of the patient's identical twin provided supporting evidence for the mutation's role.

Findings:

• The CPS1 mutation, combined with surgical stress, may lead to pulmonary artery hypertension.
• This hypertension is potentially linked to insufficient nitric oxide production.
• The study highlights the significance of incidental genetic discoveries.

Implications:

• Identification of the CPS1 mutation allows for targeted preventative strategies for the patient and relatives.
• This research underscores the clinical utility of whole-exome sequencing in uncovering unexpected genetic risks.
• Understanding these genetic underpinnings can improve patient care and inform future genetic counseling.