Management

1. Multidisciplinary Care Approach
Given the multisystem involvement, patients benefit from coordinated care involving:
•    Clinical genetics
•    Pediatric neurology
•    Gastroenterology/hepatology
•    Developmental pediatrics
•    Nutrition/dietetics
•    Therapies (PT, OT, speech, behavioral)

2. Neurological and Developmental Surveillance
•    Developmental assessments: Regular evaluations of motor, cognitive, and speech milestones.
•    Neuroimaging: Brain MRI may be indicated to assess structural abnormalities.
•    EEG: For patients with seizures or abnormal movements.
•    Behavioral evaluations: Screen for autism spectrum disorder and other neurobehavioral concerns.

3. Hepatic Monitoring
•    Serum bile acids: Elevated in most symptomatic individuals; useful for diagnosis and monitoring.
•    Liver enzymes: ALT, AST, ALP may be mildly elevated; GGT and bilirubin typically normal.
•    Abdominal ultrasound: Assess for hepatomegaly, gallstones, and liver echogenicity.
•    Pruritus management: Ursodeoxycholic acid (ursodiol): May reduce bile acid levels and improve symptoms. Consider cholestyramine or rifampin if pruritus is refractory.

4. Nutritional and Gastrointestinal Support
•    Growth monitoring: Track weight, height, and head circumference.
•    Fat malabsorption: Assess for steatorrhea, chronic diarrhea, and vitamin deficiencies.
•    Supplementation:
•    Fat-soluble vitamins (A, D, E, K)
•    Iron if anemia is present
•    Feeding support: May require nasogastric or gastrostomy feeding in severe cases.

5. Genetic Counseling
•    Inheritance: Autosomal recessive; high recurrence risk in consanguineous families.
•    Carrier testing: Recommended for parents and at-risk relatives.
•    Prenatal or preimplantation genetic diagnosis: May be considered in future pregnancies.

6. Longitudinal Surveillance
•    Head circumference: Monitor for progressive microcephaly.
•    Growth parameters: Evaluate for failure to thrive.
•    Liver function: Periodic monitoring even in asymptomatic individuals.
•    Neurodevelopmental trajectory: Adjust therapies and educational plans accordingly.

7. Emerging Considerations
•    No targeted therapies currently exist for WDR83OSdeficiency.