Rapid Genome Sequencing Changes Pediatric Critical Care

A citywide rapid whole-genome sequencing program in Dubai diagnosed more than half of 100 critically ill pediatric patients and changed clinical management for the same proportion, according to a Nature Medicine study.

The Little Falcon program connected centralized neonatal and pediatric intensive care units through a multidisciplinary clinical-genomic referral network. Rapid sequencing was performed as parent-child trios in 98 patients; 2 underwent duo analysis because paternal samples were unavailable. The median turnaround time was 3.4 days. Participants came from 18 Middle Eastern and Asian countries.

The overall diagnostic yield was 53%, rising to 80% among consanguineous families. Twelve percent of patients had multiple molecular findings, including dual diagnoses in 5%. Investigators also identified newborn-screening-relevant variants in 4% and secondary or incidental findings in 3%.

Sequencing led to clinically meaningful management changes in 53 patients, including 45 with a molecular diagnosis and 8 without one. Changes included targeted medication or dietary interventions in 36%, procedure or surgery decisions in 13%, consolidation of diagnostic pathways in 43%, subspecialty referrals in 37%, and redirection toward palliative care in 9%. Disease trajectories changed immediately in 16% of patients.

Compared with a matched historical cohort receiving standard genetic testing, rapid sequencing was associated with a shorter median diagnostic time, at 3.4 versus 38 days (P<.001); a higher diagnostic yield, at 53% versus 30% (P<.01); and more frequent management changes, at 53% versus 18% (P<0.001). The findings support integration of rapid sequencing into neonatal and pediatric intensive care when monogenic disease is suspected, and timely results could alter acute decisions.

Source:  Rabea F, et al. Citywide implementation of a rapid whole-genome sequencing program for critically ill pediatric patients. Nat Med. Published online August 24, 2026. doi:10.1038/s41591-026-04598-x